Bump minimist from 1.2.5 to 1.2.6

Bumps [minimist](https://github.com/substack/minimist) from 1.2.5 to 1.2.6.
- [Release notes](https://github.com/substack/minimist/releases)
- [Commits](https://github.com/substack/minimist/compare/1.2.5...1.2.6)

---
updated-dependencies:
- dependency-name: minimist
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

.eslintignore

@@ -1,8 +1,11 @@
+node_modules/
 /.*cache/
 /.tmp/
 /coverage/
 /dist/
+/packages/*/bin/
 /packages/*/coverage/
+/packages/*/dist/
 /packages/*/lib/
 /packages/*/*.js
 /scripts/*

.eslintrc.js

@@ -1,4 +1,6 @@
 const tsconfigs = [
+  'tsconfig.json',
+  '*/tsconfig.json',
   'packages/*/tsconfig.json',
   'packages/*/test/tsconfig.json',
 ]
@@ -18,15 +20,14 @@ module.exports = {
   },
   settings: {
     'import/resolver': {
-      // Use eslint-import-resolver-ts to obey "paths" in tsconfig.json.
+      // Use eslint-import-resolver-typescript to obey "paths" in tsconfig.json.
-      ts: {
+      typescript: {
         directory: tsconfigs,
       },
     },
   },
   extends: [
     'eslint:recommended',
-    'plugin:@typescript-eslint/eslint-recommended',
     'plugin:@typescript-eslint/recommended',
     'plugin:@typescript-eslint/recommended-requiring-type-checking',
     'standard-with-typescript',
@@ -35,48 +36,63 @@ module.exports = {
   ],
   rules: {
     'comma-dangle': ['error', 'always-multiline'],
-    // Disable in favour of TypeScript rule.
-    'func-call-spacing': 'off',
     'linebreak-style': ['error', 'unix'],
-    'lines-between-class-members': 'off',
+    // Changed from error to warn and enabled ignoreEOLComments.
-    // Disable in favour of TypeScript rule.
-    'no-extra-semi': 'off',
     'no-multi-spaces': ['warn', {
       ignoreEOLComments: true,
     }],
+    // Changed from error to warn and adjusted options.
     'no-multiple-empty-lines': ['warn', {
       max: 2,
       maxEOF: 1,
       maxBOF: 1,
     }],
     'no-template-curly-in-string': 'off',
+    // Changed from 'after' to 'before'.
     'operator-linebreak': ['error', 'before'],
+    // Changed from error and all 'never' to warn and switches 'never'.
     'padded-blocks': ['warn', {
       switches: 'never',
     }],
+    // Changed from 'as-needed' to 'consistent-as-needed'.
     'quote-props': ['error', 'consistent-as-needed'],
-    // Disable in favour of TypeScript rule.
-    'semi': 'off',
 
     // Import
+
+    // Some packages have wrong type declarations.
     'import/default': 'off',
     'import/newline-after-import': 'warn',
-    'import/no-absolute-path': 'error',
     // This rule disallows using both wildcard and selective imports from the same module.
     'import/no-duplicates': 'off',
-    // Some packages has it wrong in type declarations (e.g. katex, marked).
+    // Some packages have it wrong in type declarations (e.g. katex, marked).
     'import/no-named-as-default-member': 'off',
 
     // TypeScript
+
+    // Changed options.
+    '@typescript-eslint/ban-types': ['error', {
+      // Allow to use {} and object - they are actually useful.
+      types: {
+        '{}': false,
+        'object': false,
+      },
+      extendDefaults: true,
+    }],
+    '@typescript-eslint/class-literal-property-style': ['error', 'fields'],
+    // Changed from error to off.
     '@typescript-eslint/consistent-type-definitions': 'off',
+    // Changed from error to off.
     '@typescript-eslint/explicit-function-return-type': 'off',
-    '@typescript-eslint/explicit-member-accessibility': ['warn', {
+    '@typescript-eslint/explicit-member-accessibility': ['error', {
       accessibility: 'no-public',
       overrides: {
         parameterProperties: 'off',
       },
     }],
-    '@typescript-eslint/func-call-spacing': ['error', 'never'],
+    // Changed from warn to error and adjusted options.
+    '@typescript-eslint/explicit-module-boundary-types': ['error', {
+      allowArgumentsExplicitlyTypedAsAny: true,
+    }],
     '@typescript-eslint/indent': ['error', 2, {
       SwitchCase: 1,
       VariableDeclarator: 1,
@@ -95,31 +111,58 @@ module.exports = {
       flatTernaryExpressions: true,
       ignoreComments: false,
     }],
+    // Changed from error to warn.
+    '@typescript-eslint/lines-between-class-members': 'warn',
+    // Changed delimiter for type literals from none to comma.
+    // The reason is just aesthetic symmetry with object literals.
     '@typescript-eslint/member-delimiter-style': ['error', {
       multiline: { delimiter: 'comma', requireLast: true },
       singleline: { delimiter: 'comma', requireLast: false },
+      overrides: {
+        interface: {
+          multiline: { delimiter: 'none' },
+        },
+      },
     }],
+    '@typescript-eslint/member-ordering': 'warn',
+    // Changed from warn to off.
     '@typescript-eslint/no-explicit-any': 'off',
+    // Changed from error to warn.
+    '@typescript-eslint/no-extra-semi': 'warn',
+    // It disallows using void even in valid cases.
+    '@typescript-eslint/no-invalid-void-type': 'off',
+    // Changed from error to warn.
     '@typescript-eslint/no-namespace': 'warn',
+    // Changed from error to warn.
+    '@typescript-eslint/no-non-null-assertion': 'warn',
     '@typescript-eslint/no-require-imports': 'error',
-    '@typescript-eslint/no-unused-vars': ['error', {
+    // Changed from error to warn.
-      argsIgnorePattern: '^_',
+    '@typescript-eslint/no-unsafe-assignment': 'warn',
-    }],
+    // Changed from error to warn.
+    '@typescript-eslint/no-unsafe-member-access': 'warn',
+    // Disabled in favour of the next rule.
+    '@typescript-eslint/no-unused-vars': 'off',
+    '@typescript-eslint/no-unused-vars-experimental': 'error',
+    // Changed options.
     '@typescript-eslint/no-use-before-define': ['error', {
-      classes: true,
       functions: false,
       typedefs: false,
-      variables: true,
     }],
     '@typescript-eslint/prefer-for-of': 'warn',
+    // Changed from error to warn.
     '@typescript-eslint/prefer-includes': 'warn',
+    // Changed from error to warn.
     '@typescript-eslint/prefer-regexp-exec': 'warn',
     '@typescript-eslint/prefer-string-starts-ends-with': 'warn',
-    '@typescript-eslint/promise-function-async': ['error', {
+    // It has too many false positives.
-      allowAny: true,
+    '@typescript-eslint/restrict-template-expressions': 'off',
-    }],
+    // Changed from error to off.
-    '@typescript-eslint/semi': ['error', 'never'],
     '@typescript-eslint/strict-boolean-expressions': 'off',
+    '@typescript-eslint/switch-exhaustiveness-check': 'error',
+    // Changed from error to warn and adjusted options.
+    '@typescript-eslint/unbound-method': ['warn', {
+      ignoreStatic: true,
+    }],
   },
   overrides: [
     {
@@ -127,7 +170,14 @@ module.exports = {
       rules: {
         // Allow to format arrays for parametrized tests as tables.
         'array-bracket-spacing': 'off',
-        'comma-spacing': 'off',
+        'comma-dangle': ['error', {
+          arrays: 'always-multiline',
+          objects: 'always-multiline',
+          imports: 'always-multiline',
+          exports: 'always-multiline',
+          // Changed to not require comma in a multiline expect().
+          functions: 'only-multiline',
+        }],
         'object-curly-spacing': 'off',
         'no-multi-spaces': 'off',
         'standard/array-bracket-even-spacing': 'off',
@@ -135,7 +185,10 @@ module.exports = {
         'space-in-parens': 'off',
         // jest.mock() must be above imports.
         'import/first': 'off',
-        '@typescript-eslint/no-non-null-assertion': 'off',
+        '@typescript-eslint/comma-spacing': 'off',
+        // False positive on expect() functions.
+        '@typescript-eslint/no-unsafe-call': 'off',
+        '@typescript-eslint/no-unsafe-return': 'warn',
       },
     },
   ],

.github/FUNDING.yml

@@ -0,0 +1,3 @@
+# These are supported funding model platforms
+
+github: jirutka

.github/workflows/ci.yml

@@ -0,0 +1,68 @@
+name: CI
+on:
+  - push
+  - pull_request
+
+jobs:
+  test:
+    name: Test on Node.js ${{ matrix.node-version }}
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        node-version: [10, 12, 13, 14]
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0  # fetch all history to make `git describe` work
+
+      - name: Setup Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - run: yarn install
+      - run: yarn build
+      - run: yarn bundle
+      - run: yarn test
+      - run: yarn lint
+
+  publish:
+    name: Publish to npmjs and GitHub Releases
+    needs: [test]
+    if: startsWith(github.ref, 'refs/tags/v')
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0  # fetch all history to make `git describe` work
+
+      - run: sudo apt-get install asciidoctor pandoc
+
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 14
+          registry-url: https://registry.npmjs.org
+
+      - run: yarn install
+
+      - name: Generate source tarball
+        run: ./scripts/create-src-tarball dist/ipynb2html-${GITHUB_REF/refs\/tags\//}-src.tar.gz
+
+      - run: yarn build
+      - run: yarn bundle
+
+      - name: Publish packages to npmjs
+        run: yarn publish-all --non-interactive
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+
+      - name: Upload tarballs to Releases
+        uses: softprops/action-gh-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          fail_on_unmatched_files: true
+          files: |
+            dist/*.tar.gz
+            packages/ipynb2html-cli/dist/*.tar.gz
+            packages/ipynb2html-cli/dist/*.zip

.gitignore

@@ -7,6 +7,7 @@
 /.*cache/
 /.tmp/
 node_modules/
+.eslintcache
 .tsbuildinfo
 tsconfig.tsbuildinfo
 *.log

.travis.yml

@@ -1,38 +0,0 @@
-dist: bionic
-
-language: node_js
-node_js:
-  - '10'
-  - '12'
-  - node
-
-addons:
-  apt:
-    packages:
-      - asciidoctor
-      - pandoc
-
-env:
-  global:
-    - secure: "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"  # NPM_TOKEN=ceed......2bf2
-
-cache: yarn
-
-install:
-  - yarn install
-
-script:
-  - yarn run build
-  - yarn run test
-  - yarn run lint
-
-before_deploy:
-  - echo '//registry.npmjs.org/:_authToken=${NPM_TOKEN}' >> "$HOME"/.npmrc
-
-deploy:
-  provider: script
-  script: yarn publish-all --non-interactive
-  skip_cleanup: true
-  on:
-    tags: true
-    node_js: '10'

LICENSE

@@ -1,6 +1,6 @@
 The MIT License
 
-Copyright 2019 Jakub Jirutka <jakub@jirutka.cz>.
+Copyright 2019-2020 Jakub Jirutka <jakub@jirutka.cz>.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.adoc

@@ -2,15 +2,15 @@
 :npm-name: ipynb2html
 :gh-name: jirutka/{npm-name}
 :gh-branch: master
-:version: 0.1.0-beta.7
+:version: 0.3.0
-:ansiup-version: 4.0.4
+:ansiup-version: 5.0.1
-:hljs-version: 9.15.10
+:hljs-version: 10.7.3
-:katex-version: 0.11.1
+:katex-version: 0.13.11
-:marked-version: 0.7.0
+:marked-version: 2.0.7
 :vs-marketplace-uri: https://marketplace.visualstudio.com/items?itemName=
 
 ifdef::env-github[]
-image:https://travis-ci.com/{gh-name}.svg?branch={gh-branch}[Build Status, link="https://travis-ci.com/{gh-name}"]
+image:https://github.com/{gh-name}/workflows/CI/badge.svg[CI Status, link=https://github.com/{gh-name}/actions?query=workflow%3A%22CI%22]
 endif::env-github[]
 
 {npm-name} is a converter (renderer) of the https://nbformat.readthedocs.io/en/stable/[Jupyter Notebook Format] 4.0+ to static HTML.
@@ -32,6 +32,7 @@ endif::env-github[]
 This package provides the converter itself and some utilities with *no dependencies*.
 You have to provide your own syntax highlighter and Markdown, math and ANSI sequences renderer; or not, if you don’t need them.
 
+
 === {npm-name}
 
 ifdef::env-github[]
@@ -46,9 +47,49 @@ This package builds on the {npm-name}-core and provides a complete, ready-to-go
 * https://github.com/IonicaBizau/anser[anser] as ANSI sequences renderer,
 * https://github.com/highlightjs/highlight.js[highlight.js] as syntax highlighter.
 
+It also provides a reference stylesheet which you can find in `dist/notebook.min.css` (or non-minified link:packages/{npm-name}/styles/notebook.css[`styles/notebook.css`]).
+
+
+=== {npm-name}-cli
+
+ifdef::env-github[]
+image:https://img.shields.io/npm/v/{npm-name}-cli.svg[Version on npm, link="https://www.npmjs.org/package/{npm-name}-cli"]
+image:https://img.shields.io/bundlephobia/min/{npm-name}-cli.svg[Minified bundle size, link="https://bundlephobia.com/result?p={npm-name}-cli"]
+endif::env-github[]
+
+This package provides a CLI interface for {npm-name}.
+
+
+ifndef::npm-readme[]
+
+== Installation
+
+All the <<Packages, packages>> can be installed using `npm` or `yarn` from https://www.npmjs.com/[npmjs.com].
+
+
+=== Standalone CLI Tool
+
+{npm-name}-cli is also provided as a single minified JavaScript with all the external dependencies bundled in.
+It requires only Node.js (version 10 or newer) to be installed on the system.
+
+* https://github.com/{gh-name}/releases/download/v{version}/{npm-name}-cli-v{version}.tar.gz[{npm-name}-cli-v{version}.tar.gz]
+* https://github.com/{gh-name}/releases/download/v{version}/{npm-name}-cli-v{version}.zip[{npm-name}-cli-v{version}.zip]
+
+The archive also contains source maps (useful for debugging).
+
+endif::[]
+
 
 == Usage
 
+=== CLI
+
+[source, subs="+attributes"]
+{npm-name} notebook.ipynb notebook.html
+
+Run `{npm-name} --help` for more information.
+
+
 === Node.js (server-side)
 
 To render HTML in Node.js (server-side rendering), you need some (fake) DOM implementation.
@@ -91,6 +132,7 @@ You can link it from https://www.jsdelivr.com/[jsDelivr CDN], for example:
 <html>
   <head>
     <meta charset="utf-8">
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/{npm-name}@{version}/dist/notebook.min.css" crossorigin="anonymous">
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@{katex-version}/dist/katex.min.css" crossorigin="anonymous">
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@{hljs-version}/build/styles/default.min.css" crossorigin="anonymous">
     <script src="https://cdn.jsdelivr.net/npm/{npm-name}@{version}/dist/{npm-name}-full.min.js" crossorigin="anonymous"></script>
@@ -111,6 +153,7 @@ document.body.appendChild(element)
 <html>
   <head>
     <meta charset="utf-8">
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/{npm-name}@{version}/dist/notebook.min.css" crossorigin="anonymous">
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@{katex-version}/dist/katex.min.css" crossorigin="anonymous">
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@{hljs-version}/build/styles/default.min.css" crossorigin="anonymous">
     <script defer src="https://cdn.jsdelivr.net/npm/{npm-name}@{version}/dist/{npm-name}-full.min.js" crossorigin="anonymous"

examples/bundle-full.html

@@ -4,17 +4,14 @@
     <meta charset="utf-8" lang="cs">
     <meta name="viewport" content="initial-scale=1">
     <title>Example using ipynb2html-full.js</title>
+    <link rel="stylesheet" href="../packages/ipynb2html/dist/notebook.min.css">
     <link
       rel="stylesheet"
-      href="https://cdn.jsdelivr.net/npm/katex@0.11.1/dist/katex.min.css"
+      href="https://cdn.jsdelivr.net/npm/katex@0.13.11/dist/katex.min.css"
       crossorigin="anonymous">
     <link
       rel="stylesheet"
-      href="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@9.15.10/build/styles/default.min.css"
+      href="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@10.7.3/build/styles/default.min.css"
-      crossorigin="anonymous">
-    <link
-      rel="stylesheet"
-      href="https://cdn.jsdelivr.net/gh/jsvine/nbpreview@c54381b/css/vendor/notebook.css"
       crossorigin="anonymous">
     <script defer src="../packages/ipynb2html/dist/ipynb2html-full.js" onload="ipynb2html.autoRender();"></script>
     <style>

examples/bundle.html

@@ -4,22 +4,19 @@
     <meta charset="utf-8" lang="cs">
     <meta name="viewport" content="initial-scale=1">
     <title>Example using ipynb2html.js</title>
+    <link rel="stylesheet" href="../packages/ipynb2html/dist/notebook.min.css">
     <link
       rel="stylesheet"
-      href="https://cdn.jsdelivr.net/npm/katex@0.11.1/dist/katex.min.css"
+      href="https://cdn.jsdelivr.net/npm/katex@0.13.11/dist/katex.min.css"
       crossorigin="anonymous">
     <link
       rel="stylesheet"
-      href="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@9.15.10/build/styles/default.min.css"
+      href="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@10.7.3/build/styles/default.min.css"
       crossorigin="anonymous">
-    <link
+    <script src="https://cdn.jsdelivr.net/npm/marked@2.0.7/marked.min.js" crossorigin="anonymous"></script>
-      rel="stylesheet"
+    <script src="https://cdn.jsdelivr.net/npm/ansi_up@5.0.1/ansi_up.js" crossorigin="anonymous"></script>
-      href="https://cdn.jsdelivr.net/gh/jsvine/nbpreview@c54381b/css/vendor/notebook.css"
+    <script src="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@10.7.3/build/highlight.min.js" crossorigin="anonymous"></script>
-      crossorigin="anonymous">
+    <script src="https://cdn.jsdelivr.net/npm/katex@0.13.11/dist/katex.min.js" crossorigin="anonymous"></script>
-    <script src="https://cdn.jsdelivr.net/npm/marked@0.7.0/marked.min.js" crossorigin="anonymous"></script>
-    <script src="https://cdn.jsdelivr.net/npm/ansi_up@4.0.4/ansi_up.js" crossorigin="anonymous"></script>
-    <script src="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@9.15.10/build/highlight.min.js" crossorigin="anonymous"></script>
-    <script src="https://cdn.jsdelivr.net/npm/katex@0.11.1/dist/katex.min.js" crossorigin="anonymous"></script>
     <script defer src="../packages/ipynb2html/dist/ipynb2html.js" onload="ipynb2html.autoRender();"></script>
     <style>
       html, body {

jest.config.base.js

@@ -63,7 +63,7 @@ module.exports = {
   globals: {
     'ts-jest': {
       compiler: 'ttypescript',
-      tsConfig: '<rootDir>/tsconfig.json',
+      tsConfig: '<rootDir>/test/tsconfig.json',
     },
   },
 

package.json

@@ -1,13 +1,13 @@
 {
   "name": "ipynb2html-parent",
-  "version": "0.1.0-beta.7",
+  "version": "0.3.0",
   "private": true,
   "scripts": {
     "build": "ttsc --build",
     "bundle": "wsrun --exclude-missing bundle",
-    "clean": "rimraf coverage/ lib/ *.log && wsrun clean",
+    "clean": "rimraf coverage/ dist/ lib/ .eslintcache *.log && wsrun clean",
-    "lint": "eslint --ext .ts,.tsx,.js .",
+    "lint": "eslint --cache --ext .ts,.tsx,.js .",
-    "postinstall": "run-s build",
+    "postinstall": "patch-package && run-s build",
     "publish-all": "wsrun --serial publish",
     "test": "jest --detectOpenHandles --coverage --verbose",
     "version": "./scripts/bump-version && git add README.adoc **/package.json",
@@ -17,48 +17,54 @@
     "node": ">=10.13.0"
   },
   "devDependencies": {
-    "@babel/core": "^7.6.3",
+    "@babel/core": "^7.10.3",
-    "@babel/preset-env": "^7.6.3",
+    "@babel/preset-env": "^7.10.3",
+    "@rollup/plugin-babel": "^5.0.3",
+    "@rollup/plugin-commonjs": "^13.0.0",
+    "@rollup/plugin-node-resolve": "^8.0.1",
     "@types/dedent": "^0.7.0",
-    "@types/highlightjs": "^9.12.0",
+    "@types/jest": "^24.9.1",
-    "@types/jest": "^24.0.18",
+    "@types/node": "^10.17.25",
-    "@types/katex": "^0.10.2",
+    "@typescript-eslint/eslint-plugin": "^3.3.0",
-    "@types/marked": "^0.6.5",
+    "@typescript-eslint/parser": "^3.3.0",
-    "@types/node": "^10.13.0",
-    "@typescript-eslint/eslint-plugin": "^2.4.0",
-    "@typescript-eslint/parser": "^2.4.0",
-    "ansi_up": "^4.0.4",
     "arrify": "^2.0.1",
-    "core-js": "^3.2.1",
+    "common-path-prefix": "^3.0.0",
+    "core-js": "^3.6.5",
+    "csso-cli": "^3.0.0",
     "dedent": "^0.7.0",
-    "eslint": "^6.5.1",
+    "eslint": "^7.3.0",
-    "eslint-config-standard-with-typescript": "^10.0.0",
+    "eslint-config-standard-with-typescript": "^18.0.2",
-    "eslint-import-resolver-ts": "^0.4.0",
+    "eslint-import-resolver-typescript": "^2.0.0",
-    "eslint-plugin-import": "^2.18.0",
+    "eslint-plugin-import": "^2.21.2",
-    "eslint-plugin-node": "^10.0.0",
+    "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-promise": "^4.2.1",
     "eslint-plugin-standard": "^4.0.0",
     "fs-extra": "^8.1.0",
-    "jest": "^24.9.0",
+    "jest": "^25.5.4",
-    "jest-chain": "^1.1.2",
+    "jest-chain": "^1.1.5",
+    "node-html-parser": "^1.2.19",
     "nodom": "^2.3.0",
     "npm-run-all": "^4.1.5",
-    "rimraf": "^3.0.0",
+    "patch-package": "^6.2.2",
-    "rollup": "^1.23.0",
+    "postinstall-postinstall": "^2.1.0",
-    "rollup-plugin-add-git-msg": "^1.0.3",
+    "rimraf": "^3.0.2",
-    "rollup-plugin-babel": "^4.3.3",
+    "rollup": "^2.17.1",
-    "rollup-plugin-commonjs": "^10.1.0",
+    "rollup-plugin-add-git-msg": "^1.1.0",
-    "rollup-plugin-node-resolve": "^5.2.0",
+    "rollup-plugin-executable": "^1.6.0",
-    "rollup-plugin-terser": "^5.1.2",
+    "rollup-plugin-node-externals": "^2.2.0",
-    "rollup-plugin-typescript2": "^0.24.3",
+    "rollup-plugin-node-license": "^0.2.0",
-    "ts-jest": "^24.1.0",
+    "rollup-plugin-terser": "^6.1.0",
-    "ts-node": "^8.4.1",
+    "rollup-plugin-typescript2": "^0.27.1",
+    "tar": "^5.0.10",
+    "ts-jest": "^25.5.1",
+    "ts-node": "^8.10.2",
     "ts-transformer-export-default-name": "^0.1.0",
     "ts-transformer-inline-file": "^0.1.1",
-    "ttypescript": "^1.5.7",
+    "ttypescript": "^1.5.10",
-    "typescript": "~3.6.4",
+    "typescript": "~3.9.5",
-    "wsrun": "^5.0.2",
+    "wsrun": "^5.2.1",
-    "yarn-version-bump": "^0.0.3"
+    "yarn-version-bump": "^0.0.3",
+    "yazl": "^2.5.1"
   },
   "workspaces": [
     "packages/*"

packages/ipynb2html-cli/bin/ipynb2html

@@ -0,0 +1,2 @@
+#!/usr/bin/env node
+require('../lib/index').default(process.argv.slice(2))

packages/ipynb2html-cli/package.json

@@ -0,0 +1,54 @@
+{
+  "name": "ipynb2html-cli",
+  "version": "0.3.0",
+  "description": "CLI tool for converting Jupyter Notebooks to static HTML",
+  "author": "Jakub Jirutka <jakub@jirutka.cz>",
+  "license": "MIT",
+  "homepage": "https://github.com/jirutka/ipynb2html",
+  "bugs": "https://github.com/jirutka/ipynb2html/issues",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/jirutka/ipynb2html.git"
+  },
+  "keywords": [
+    "cli",
+    "converter",
+    "html",
+    "ipython",
+    "jupyter",
+    "notebook"
+  ],
+  "bin": {
+    "ipynb2html": "bin/ipynb2html"
+  },
+  "main": "lib/index.js",
+  "types": "lib/index.d.ts",
+  "files": [
+    "bin",
+    "lib",
+    "src"
+  ],
+  "scripts": {
+    "build": "ttsc --build",
+    "bundle": "rollup -c && ./scripts/pack-bundle",
+    "clean": "rimraf coverage/ dist/ lib/ .eslintcache .tsbuildinfo",
+    "lint": "PKGDIR=$PWD; cd ../../ && eslint --cache --ext .ts,.tsx,.js $PKGDIR",
+    "prepublishOnly": "run-s readme2md",
+    "readme2md": "../../scripts/adoc2md -a npm-readme ../../README.adoc > README.md",
+    "watch-ts": "ttsc --build --watch"
+  },
+  "engines": {
+    "node": ">=10.13.0"
+  },
+  "dependencies": {
+    "ipynb2html": "0.3.0",
+    "minimist": "^1.2.6",
+    "minimist-options": "^4.0.2",
+    "nodom": "^2.3.0",
+    "source-map-support": "^0.5.16"
+  },
+  "devDependencies": {
+    "@types/minimist": "^1.2.0",
+    "@types/source-map-support": "^0.5.1"
+  }
+}

packages/ipynb2html-cli/rollup.config.js

@@ -0,0 +1,67 @@
+import addGitMsg from 'rollup-plugin-add-git-msg'
+import commonjs from '@rollup/plugin-commonjs'
+import executable from 'rollup-plugin-executable'
+import externals from 'rollup-plugin-node-externals'
+import license from 'rollup-plugin-node-license'
+import resolve from '@rollup/plugin-node-resolve'
+import { terser } from 'rollup-plugin-terser'
+import typescript from 'rollup-plugin-typescript2'
+import ttypescript from 'ttypescript'
+
+import pkg from './package.json'
+
+
+export default {
+  input: 'src/index.ts',
+  plugins: [
+    // Transpile TypeScript sources to JS.
+    typescript({
+      typescript: ttypescript,
+      tsconfigOverride: {
+        compilerOptions: {
+          module: 'ESNext',
+          declaration: false,
+          declarationMap: false,
+          composite: false,
+          incremental: true,
+        },
+      },
+      clean: true,
+    }),
+    // Make node builtins external.
+    externals(),
+    // Resolve node modules.
+    resolve({
+      extensions: ['.mjs', '.js', '.ts'],
+      mainFields: ['jsnext:main', 'module', 'main'],
+    }),
+    // Convert CommonJS modules to ES6 modules.
+    commonjs(),
+    // Add git tag, commit SHA and build date at top of the file.
+    addGitMsg({
+      copyright: [
+        pkg.author,
+        '* This project is licensed under the terms of the MIT license.'
+      ].join('\n'),
+    }),
+    // Generate table of the bundled packages at top of the file.
+    license({ format: 'table' }),
+    // Minify JS.
+    terser({
+      ecma: 2018,
+      output: {
+      // Preserve comment injected by addGitMsg and license.
+      comments: RegExp(`(?:\\$\\{${pkg.name}\\}|Bundled npm packages)`),
+      },
+    }),
+    // Make the output file executable.
+    executable(),
+  ],
+  output: {
+    file: 'dist/ipynb2html',
+    format: 'cjs',
+    banner: '#!/usr/bin/env node',
+    exports: 'named',
+    sourcemap: true,
+  },
+}

packages/ipynb2html-cli/scripts/pack-bundle

@@ -0,0 +1,8 @@
+#!/bin/sh
+set -e
+
+cd "$(dirname "$0")/../dist"
+export PATH="$(pwd)/../../../scripts:$PATH"
+
+assemble-license ipynb2html > LICENSE
+create-archives ipynb2html-cli ipynb2html ipynb2html.map LICENSE

packages/ipynb2html-cli/src/cli.ts

@@ -0,0 +1,134 @@
+import fs from 'fs'
+import minimist from 'minimist'
+import minimistOptions from 'minimist-options'
+import { Document } from 'nodom'
+import { exit } from 'process'
+import { $INLINE_FILE, $INLINE_JSON } from 'ts-transformer-inline-file'
+
+import * as ipynb2html from 'ipynb2html'
+
+import renderPage from './page'
+
+
+// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+const { version, bugs: bugsUrl } = $INLINE_JSON('../package.json')
+const notebookCss = $INLINE_FILE('../../ipynb2html/styles/notebook.css')
+const pageCss = $INLINE_FILE('./page.css')
+const progName = 'ipynb2html'
+
+const helpMsg = `\
+Usage: ${progName} [options] <input> [<output>]
+
+Convert Jupyter Notebook 4.0+ to a static HTML page.
+
+Arguments:
+  <input>          Path of the Jupyter notebook to read, or "-" for STDIN.
+  <output>         Path of the file to write the output HTML into. If not
+                   provided, the output will be written to STDOUT.
+
+Options:
+  -d --debug             Print debug messages.
+
+  -s --style <file,...>  Comma separated stylesheet(s) to embed into the output
+                         HTML. The stylesheet may be a path to a CSS file,
+                         "@base" for the base ipynb2html style, or "@default"
+                         for the default full page style. Default is @default.
+
+  -h --help              Show this message and exit.
+
+  -V --version           Print version and exit.
+
+Exit Codes:
+  1                      Generic error code.
+  2                      Missing required arguments or invalid option.
+
+Please report bugs at <${bugsUrl}>.
+`
+
+function logErr (msg: string): void {
+  console.error(`${progName}: ${msg}`)
+}
+
+function arrify <T> (obj: T | T[]): T[] {
+  return Array.isArray(obj) ? obj : [obj]
+}
+
+function parseCliArgs (argv: string[]) {
+  const opts = minimist(argv, minimistOptions({
+    debug: { alias: 'd', type: 'boolean' },
+    style: { alias: 's', type: 'string', default: '@default' },
+    version: { alias: 'V', type: 'boolean' },
+    help: { alias: 'h', type: 'boolean' },
+    arguments: 'string',
+    stopEarly: true,
+    unknown: (arg: string) => {
+      if (arg.startsWith('-')) {
+        logErr(`Unknown option: ${arg}`)
+        return exit(2)
+      } else {
+        return true
+      }
+    },
+  }))
+
+  if (opts.help) {
+    console.log(helpMsg)
+    return exit(0)
+  }
+  if (opts.version) {
+    console.log(`${progName} ${version}`)
+    return exit(0)
+  }
+
+  if (opts._.length < 1 || opts._.length > 2) {
+    logErr('Invalid number of arguments\n')
+    console.log(helpMsg)
+    return exit(2)
+  }
+  const [input, output] = opts._
+
+  return {
+    styles: arrify(opts.style).join(',').split(/,\s*/),
+    debug: opts.debug as boolean,
+    input: input === '-' ? 0 : input,  // 0 = stdin
+    output,
+  }
+}
+
+function loadStyle (name: string): string {
+  switch (name) {
+    case '@base': return notebookCss
+    case '@default': return pageCss + notebookCss
+    default: return fs.readFileSync(name, 'utf8')
+  }
+}
+
+export default (argv: string[]): void => {
+  const opts = parseCliArgs(argv)
+
+  try {
+    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+    const notebook = JSON.parse(fs.readFileSync(opts.input, 'utf-8'))
+    const style = opts.styles.map(loadStyle).join('\n')
+
+    const title = ipynb2html.readNotebookTitle(notebook) || 'Notebook'
+
+    const renderNotebook = ipynb2html.createRenderer(new Document())
+    const contents = renderNotebook(notebook).outerHTML
+
+    const html = renderPage({ contents, title, style })
+
+    if (opts.output) {
+      fs.writeFileSync(opts.output, html)
+    } else {
+      console.log(html)
+    }
+  } catch (err) {
+    if (opts.debug) {
+      console.debug(err)
+    } else {
+      logErr((err as Error).message)
+    }
+    return exit(1)
+  }
+}

packages/ipynb2html-cli/src/index.ts

@@ -0,0 +1,15 @@
+import sourceMapSupport from 'source-map-support'
+
+import cli from './cli'
+
+// Allow to disable sourcemap when running from pkg bundle.
+if (!/^(0|disable|false|no|off)$/i.test(process.env.NODE_SOURCEMAP ?? '')) {
+  sourceMapSupport.install({ environment: 'node' })
+}
+
+// If the file is run directly (not required as a module), call CLI.
+if (require.main === module) {
+  cli(process.argv.slice(2))
+}
+
+export default cli

packages/ipynb2html-cli/src/page.css

@@ -0,0 +1,95 @@
+html, body {
+  margin: 0;
+  padding: 0;
+  background-color: #dedede;
+  color: #2a2a2a;
+  font-family: sans-serif;
+}
+
+code,
+pre {
+  font-size: 0.85rem;
+}
+
+h1, h2, h3, h4, h5, h6 {
+  margin-top: 1.6em;
+  position: relative;
+}
+h1 {
+  font-size: 2em;
+}
+
+h1 .anchor,
+h2 .anchor,
+h3 .anchor,
+h4 .anchor,
+h5 .anchor,
+h6 .anchor {
+  display: block;
+  width: 1em;
+  left: -1em;
+  height: 100%;
+  position: absolute;
+}
+
+h1:hover .anchor,
+h2:hover .anchor,
+h3:hover .anchor,
+h4:hover .anchor,
+h5:hover .anchor,
+h6:hover .anchor {
+  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 50'%3E%3Cg fill='none' stroke='%23000' stroke-width='3'%3E%3Cpath d='M26.1 22a5.8 5.8 0 00-8.1 0l-9.6 9.5a5.8 5.8 0 008.2 8.2l5.8-5.9'/%3E%3Cpath d='M23.6 28a5.8 5.8 0 008.2 0l9.5-9.5a5.8 5.8 0 00-8.1-8.2l-5.8 5.9'/%3E%3C/g%3E%3C/svg%3E") no-repeat 100% center;
+}
+
+table {
+  border-collapse: collapse;
+  border: 1px solid #cfcfcf;
+}
+
+th {
+  font-weight: 600;
+}
+
+td,
+th {
+  padding: 0.2em 0.4em;
+  border: 1px solid #cfcfcf;
+}
+
+thead tr,
+tbody tr:nth-child(even) {
+  background-color: #f7f7f7;
+}
+
+thead tr:hover,
+tbody tr:hover {
+  background-color: #cfcfcf;
+}
+
+.nb-notebook {
+  max-width: 45rem;
+  margin: 1rem auto;
+  padding: 3rem 6rem;
+  background-color: white;
+  box-shadow: 4px 4px 8px #cfcfcf, -4px -4px 8px #cfcfcf;
+}
+
+.nb-output table {
+  font-size: 0.9em;
+}
+
+@media (max-width: 900px) {
+  .nb-notebook {
+    margin: 0;
+    padding-left: 5rem;
+    padding-right: 3rem;
+    max-width: none;
+    box-shadow: none;
+  }
+}
+
+@media (max-width: 768px) {
+  .nb-notebook {
+    padding: 1rem 5% 2rem 5%;
+  }
+}

packages/ipynb2html-cli/src/page.ts

@@ -0,0 +1,34 @@
+import { version } from 'ipynb2html'
+
+
+export type Options = {
+  contents: string,
+  title: string,
+  style: string,
+}
+
+export default ({ contents, title, style }: Options): string => `\
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="initial-scale=1">
+    <meta name="generator" content="ipynb2html ${version}">
+    <title>${title}</title>
+    <link rel="stylesheet"
+        href="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@10.7.3/build/styles/default.min.css"
+        integrity="sha384-s4RLYRjGGbVqKOyMGGwfxUTMOO6D7r2eom7hWZQ6BjK2Df4ZyfzLXEkonSm0KLIQ"
+        crossorigin="anonymous">
+    <link rel="stylesheet"
+        href="https://cdn.jsdelivr.net/npm/katex@0.13.11/dist/katex.min.css"
+        integrity="sha384-Um5gpz1odJg5Z4HAmzPtgZKdTBHZdw8S29IecapCSB31ligYPhHQZMIlWLYQGVoc"
+        crossorigin="anonymous">
+    <style>
+${style.replace(/\n\n/g, '\n').replace(/\n$/, '').replace(/^/gm, '      ')}
+    </style>
+  </head>
+  <body>
+${contents}
+  </body>
+</html>
+`

packages/ipynb2html-cli/tsconfig.json

@@ -0,0 +1,16 @@
+{
+  "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "rootDir": "./src",
+    "outDir": "./lib",
+    "tsBuildInfoFile": "./.tsbuildinfo",
+    "baseUrl": ".",
+  },
+  "include": [
+    "./src",
+  ],
+  "references": [
+    { "path": "../ipynb2html-core" },
+    { "path": "../ipynb2html" },
+  ],
+}

packages/ipynb2html-core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "ipynb2html-core",
-  "version": "0.1.0-beta.7",
+  "version": "0.3.0",
   "description": "Convert Jupyter Notebook to static HTML",
   "author": "Jakub Jirutka <jakub@jirutka.cz>",
   "license": "MIT",
@@ -25,8 +25,8 @@
   ],
   "scripts": {
     "build": "ttsc --build",
-    "clean": "rimraf coverage/ lib/ .tsbuildinfo",
+    "clean": "rimraf coverage/ lib/ .eslintcache .tsbuildinfo",
-    "lint": "eslint --ext .ts,.tsx,.js .",
+    "lint": "PKGDIR=$PWD; cd ../../ && eslint --cache --ext .ts,.tsx,.js $PKGDIR",
     "prepublishOnly": "run-s readme2md",
     "test": "jest --detectOpenHandles --coverage --verbose",
     "readme2md": "../../scripts/adoc2md -a npm-readme ../../README.adoc > README.md",

packages/ipynb2html-core/src/elementCreator.ts

@@ -4,8 +4,8 @@ type Attributes = { [k: string]: string }
 // for this module's function.
 export type MinimalElement = {
   innerHTML: string,
-  setAttribute (name: string, value: string): void,
+  setAttribute: (name: string, value: string) => void,
-  appendChild (child: any): any,
+  appendChild: (child: any) => unknown,
 }
 
 export type ElementCreator<TElement = HTMLElement> =

packages/ipynb2html-core/src/htmlRenderer.ts

@@ -16,7 +16,7 @@ export default <TElement> (opts: Options<TElement>): DataRenderer<TElement> => {
   const { elementCreator: el, mathRenderer: renderMath } = opts
 
   return (data: string): TElement => {
-    const math = (extractMathRx.exec(data) || [])[1]
+    const math = (extractMathRx.exec(data) ?? [])[1]
     return math
       ? el('div', ['latex-output'], renderMath(math))
       : el('div', ['html-output'], data)

packages/ipynb2html-core/src/index.ts

@@ -3,6 +3,6 @@ import * as mathExtractor from './mathExtractor'
 export { default as createElementCreator, ElementCreator, MinimalElement } from './elementCreator'
 export { default as createHtmlRenderer } from './htmlRenderer'
 export * from './nbformat'
-export { default as createNbRenderer, DataRenderer, NbRenderer, Options as NbRendererOpts } from './renderer'
+export { default as NbRenderer, DataRenderer, NbRendererOpts } from './renderer'
 export { mathExtractor }
 export { default as version } from './version'

packages/ipynb2html-core/src/internal/utils.ts

@@ -1,36 +1,53 @@
 
-const htmlEntities = {
+const htmlEntities: Record<string, string> = {
   '&': '&amp;',
   '<': '&lt;',
   '>': '&gt;',
 }
 
-/**
+type Callable = (...args: any[]) => any
- * Creates a "callable object" with the given properties. In fact, it creates
- * a function that calls `obj[funcName]` and copies all the enumerable
- * properties of the *template* to the created function.
- *
- * @param {string} funcName Name of the function property of the *template*.
- * @param {Object} template The source object from which to copy enumerable properties.
- * @return A function with all enumerable properties of the *template*.
- */
-export function callableObject <T, K extends keyof T> (
-  funcName: K,
-  template: T,
-): T[K] extends Function ? T & T[K] : never {
 
-  const fn = function (...args: any[]) {
+type CallableConstructor = new <T> () => T extends { __call__: Callable }
-    return (template[funcName] as any)(...args)
+  ? T['__call__']
-  }
+  : 'subclass does not implement method __call__'
-  return Object.assign(fn, template) as any
+
+/* eslint-disable @typescript-eslint/no-unsafe-assignment,
+                  @typescript-eslint/no-unsafe-member-access,
+                  @typescript-eslint/ban-types */
+export const CallableInstance: CallableConstructor = function Callable (
+  this: object,
+): Callable {
+
+  const func = this.constructor.prototype.__call__ as Callable
+
+  const cls = function (...args: any[]) {
+    return func.apply(cls, args) as unknown
   }
+  Object.setPrototypeOf(cls, this.constructor.prototype)
+
+  Object.defineProperties(cls, {
+    name: {
+      value: this.constructor.name,
+      configurable: true,
+    },
+    length: {
+      value: func.length,
+      configurable: true,
+    },
+  })
+  return cls
+} as any
+CallableInstance.prototype = Object.create(Function.prototype)
+/* eslint-enable @typescript-eslint/no-unsafe-assignment,
+                 @typescript-eslint/no-unsafe-member-access,
+                 @typescript-eslint/ban-types */
 
 /**
  * Escapes characters with special meaning in HTML with the corresponding
  * HTML entities.
  */
 export function escapeHTML (str: string): string {
-  return str.replace(/[&<>]/g, c => (htmlEntities as any)[c])
+  return str.replace(/[&<>]/g, c => htmlEntities[c])
 }
 
 /**

packages/ipynb2html-core/src/mathExtractor.ts

@@ -191,7 +191,7 @@ export function extractMath (text: string): [string, MathExpression[]] {
     }
   }
   if (lastIdx) {
-    processMath(unescape, math, blocks, startIdx || 0, lastIdx)
+    processMath(unescape, math, blocks, startIdx ?? 0, lastIdx)
     startIdx = endDelim = lastIdx = null
   }
   return [unescape(blocks.join('')), math.map(parseDelimitedMath)]
@@ -204,6 +204,6 @@ export function extractMath (text: string): [string, MathExpression[]] {
  */
 export function restoreMath (text: string, math: string[]): string {
   return text
-    .replace(/@@([1-9][0-9]*)@@/g, (_, n) => math[Number(n) - 1])
+    .replace(/@@([1-9][0-9]*)@@/g, (_, n) => math[Number(n) - 1] ?? '')
     .replace(/@@0(\d+)@@/g, (_, n) => `@@${n}@@`)
 }

packages/ipynb2html-core/src/nbformat.ts

@@ -1,78 +1,79 @@
 // These types are based on https://github.com/jupyter/nbformat/blob/b6b5a18e5a40d37f1cc0f71f65108288bdec9bb7/nbformat/v4/nbformat.v4.schema.json.
 // This file was originally generated using json-schema-to-typescript 7.0.0 and
 // then manually polished.
+/* eslint-disable @typescript-eslint/member-ordering */
 
 /** Jupyter Notebook v4.3. */
 export interface Notebook {
 
   /** Notebook root-level metadata. */
-  metadata: NotebookMetadata,
+  metadata: NotebookMetadata
 
   /** Notebook format (minor number). Incremented for backward compatible changes to the notebook format. */
-  nbformat_minor: number,
+  nbformat_minor: number
 
   /** Notebook format (major number). Incremented between backwards incompatible changes to the notebook format. */
-  nbformat: 4,
+  nbformat: 4
 
   /** Array of cells of the current notebook. */
-  cells: Cell[],
+  cells: Cell[]
 }
 
 /** Notebook root-level metadata. */
 export interface NotebookMetadata {
 
   /** Kernel information. */
-  kernelspec?: KernelSpec,
+  kernelspec?: KernelSpec
 
   /** Kernel information. */
-  language_info?: LanguageInfo,
+  language_info?: LanguageInfo
 
   /** Original notebook format (major number) before converting the notebook between versions. This should never be written to a file. */
-  orig_nbformat?: number,
+  orig_nbformat?: number
 
   /** The title of the notebook document */
-  title?: string,
+  title?: string
 
   /** The author(s) of the notebook document */
-  authors?: any[],
+  authors?: any[]
 
   /** Extra properties. */
-  [key: string]: any,
+  [key: string]: any
 }
 
 /** Kernel information. */
 export interface KernelSpec {
 
   /** Name of the kernel specification. */
-  name: string,
+  name: string
 
   /** Name to display in UI. */
-  display_name: string,
+  display_name: string
 
   /** Extra properties. */
-  [key: string]: any,
+  [key: string]: any
 }
 
 /** Kernel information. */
 export interface LanguageInfo {
 
   /** The programming language which this kernel runs. */
-  name: string,
+  name: string
 
   /** The codemirror mode to use for code in this language. */
-  codemirror_mode?: string | { [k: string]: any },
+  codemirror_mode?: string | { [k: string]: any }
 
   /** The file extension for files in this language. */
-  file_extension?: string,
+  file_extension?: string
 
   /** The mimetype corresponding to files in this language. */
-  mimetype?: string,
+  mimetype?: string
 
   /** The pygments lexer to use for code in this language. */
-  pygments_lexer?: string,
+  pygments_lexer?: string
 
   /** Extra properties. */
-  [key: string]: any,
+  [key: string]: any
 }
 
 
@@ -89,46 +90,46 @@ export enum CellType {
 interface BaseCell {
 
   /** String identifying the type of cell. */
-  cell_type: CellType,
+  cell_type: CellType
 
   /** Cell-level metadata. */
-  metadata: CellMetadata,
+  metadata: CellMetadata
 
   /** Contents of the cell, represented as an array of lines. */
-  source: MultilineString,
+  source: MultilineString
 }
 
 /** Notebook raw nbconvert cell. */
 export interface RawCell extends BaseCell {
 
   /** String identifying the type of cell. */
-  cell_type: CellType.Raw,
+  cell_type: CellType.Raw
 
   /** Cell-level metadata. */
   metadata: CellMetadata & {
     /** Raw cell metadata format for nbconvert. */
     format?: string,
-  },
+  }
 
   /** Media attachments (e.g. inline images), stored as mimebundle keyed by filename. */
-  attachments?: MediaAttachments,
+  attachments?: MediaAttachments
 }
 
 /** Notebook markdown cell. */
 export interface MarkdownCell extends BaseCell {
 
   /** String identifying the type of cell. */
-  cell_type: CellType.Markdown,
+  cell_type: CellType.Markdown
 
   /** Media attachments (e.g. inline images), stored as mimebundle keyed by filename. */
-  attachments?: MediaAttachments,
+  attachments?: MediaAttachments
 }
 
 /** Notebook code cell. */
 export interface CodeCell extends BaseCell {
 
   /** String identifying the type of cell. */
-  cell_type: CellType.Code,
+  cell_type: CellType.Code
 
   /** Cell-level metadata. */
   metadata: CellMetadata & {
@@ -138,38 +139,38 @@ export interface CodeCell extends BaseCell {
 
     /** Whether the cell's output is scrolled, unscrolled, or autoscrolled. */
     scrolled?: true | false | 'auto',
-  },
+  }
 
   /** Execution, display, or stream outputs. */
-  outputs: Output[],
+  outputs: Output[]
 
   /** The code cell's prompt number. Will be null if the cell has not been run. */
-  execution_count: number | null,
+  execution_count: number | null
 }
 
 export interface CellMetadata {
 
   /** Official Jupyter Metadata for Raw Cells */
-  jupyter?: { [k: string]: any },
+  jupyter?: { [k: string]: any }
 
   /**
    * The cell's name. If present, must be a non-empty string. Cell names are expected to be unique
    * across all the cells in a given notebook. This criterion cannot be checked by the json schema
    * and must be established by an additional check.
    */
-  name?: string,
+  name?: string
 
   /** The cell's tags. Tags must be unique, and must not contain commas. */
-  tags?: string[],
+  tags?: string[]
 
   /** Extra properties. */
-  [key: string]: any,
+  [key: string]: any
 }
 
 export interface MediaAttachments {
 
   /** The attachment's data stored as a mimebundle. */
-  [filename: string]: MimeBundle,
+  [filename: string]: MimeBundle
 }
 
 
@@ -188,62 +189,62 @@ export enum OutputType {
 export interface ExecuteResult {
 
   /** Type of cell output. */
-  output_type: OutputType.ExecuteResult,
+  output_type: OutputType.ExecuteResult
 
   /** A result's prompt number. */
-  execution_count: number | null,
+  execution_count: number | null
 
   /** A mime-type keyed dictionary of data */
-  data: MimeBundle,
+  data: MimeBundle
 
   /** Cell output metadata. */
   metadata: {
     [k: string]: any,
-  },
+  }
 }
 
 /** Data displayed as a result of code cell execution. */
 export interface DisplayData {
 
   /** Type of cell output. */
-  output_type: OutputType.DisplayData,
+  output_type: OutputType.DisplayData
 
   /** A mime-type keyed dictionary of data */
-  data: MimeBundle,
+  data: MimeBundle
 
   /** Cell output metadata. */
   metadata: {
     [k: string]: any,
-  },
+  }
 }
 
 /** Stream output from a code cell. */
 export interface StreamOutput {
 
   /** Type of cell output. */
-  output_type: OutputType.Stream,
+  output_type: OutputType.Stream
 
   /** The name of the stream (stdout, stderr). */
-  name: string,
+  name: string
 
   /** The stream's text output, represented as an array of strings. */
-  text: MultilineString,
+  text: MultilineString
 }
 
 /** Output of an error that occurred during code cell execution. */
 export interface ErrorOutput {
 
   /** Type of cell output. */
-  output_type: OutputType.Error,
+  output_type: OutputType.Error
 
   /** The name of the error. */
-  ename: string,
+  ename: string
 
   /** The value, or message, of the error. */
-  evalue: string,
+  evalue: string
 
   /** The error's traceback, represented as an array of strings. */
-  traceback: string[],
+  traceback: string[]
 }
 
 
@@ -252,7 +253,7 @@ export interface ErrorOutput {
 export interface MimeBundle {
 
   /** mimetype output (e.g. text/plain), represented as either an array of strings or a string. */
-  [mediaType: string]: MultilineString,
+  [mediaType: string]: MultilineString
 }
 
 export type MultilineString = string | string[]

packages/ipynb2html-core/src/renderer.ts

@@ -1,6 +1,6 @@
 // This code is originally based on notebookjs 0.4.2 distributed under the MIT license.
 import { ElementCreator } from './elementCreator'
-import { callableObject, escapeHTML, identity } from './internal/utils'
+import { CallableInstance, escapeHTML, identity } from './internal/utils'
 import {
   Cell,
   CellType,
@@ -17,18 +17,18 @@ import {
 } from './nbformat'
 
 
-export type Options<TElement = HTMLElement> = {
+export type NbRendererOpts<TElement = HTMLElement> = {
   /**
    * An object with additional data renderers indexed by a media type.
    */
   dataRenderers?: DataRenderers<TElement>,
   /**
-   * An array of the supported media types in the priority order. When a cell
+   * An array of the supported MIME types in the priority order. When a cell
    * contains multiple representations of the data, the one with the media type
    * that has the lowest index in this array will be rendered. The default is
    * `Object.keys({ ...dataRenderers, ...builtinRenderers })`.
    */
-  dataRenderersOrder?: string[],
+  dataTypesPriority?: string[],
   /**
    * A function for converting ANSI escape sequences in the given *text* to HTML.
    * It gets the text from the cell as-is, without prior escaping, so it must
@@ -48,7 +48,7 @@ export type Options<TElement = HTMLElement> = {
   markdownRenderer?: (markup: string) => string,
 }
 
-export type DataRenderer<TElement = HTMLElement> = (data: string) => TElement
+export type DataRenderer<TElement = HTMLElement> = (this: NbRenderer<TElement> | void, data: string) => TElement
 
 type DataRenderers<TElement> = { [mediaType: string]: DataRenderer<TElement> }
 
@@ -83,155 +83,173 @@ function executionCountAttrs ({ execution_count: count }: CodeCell): { [k: strin
 }
 
 function notebookLanguage ({ metadata: meta }: Notebook): string {
-  return (meta.language_info && meta.language_info.name) || 'python'
+  return meta.language_info?.name ?? 'python'
 }
 
+class NbRenderer <TElement> extends CallableInstance<NbRenderer<TElement>> {
+
+  readonly el: ElementCreator<TElement>
+  readonly renderMarkdown: NonNullable<NbRendererOpts['markdownRenderer']>
+  readonly renderAnsiCodes: NonNullable<NbRendererOpts['ansiCodesRenderer']>
+  readonly highlightCode: NonNullable<NbRendererOpts['codeHighlighter']>
+  readonly dataRenderers: DataRenderers<TElement>
+  readonly dataTypesPriority: string[]
+
   /**
- * Builds a Notebook renderer function with the given options. It returns a
+   * Creates a Notebook renderer with the given options. The constructed object
- * "callable object" that exposes a renderer function for each of the
+   * is "callable", i.e. you can treat it as a function.
- * Notebook's AST node. You can easily replace any of the functions to modify
+   *
- * behaviour of the renderer.
+   * @example
+   *   const renderer = new NbRenderer(document.createElement.bind(document))
+   *   console.log(renderer(notebook).outerHTML)
    *
    * @param {ElementCreator} elementCreator The function that will be used for
    *   building all HTML elements.
- * @param {Options} opts
+   * @param {NbRendererOpts} opts The renderer's options.
- * @return {NbRenderer}
- * @template TElement Type of the element object that *elementCreator* produces.
    */
-function buildRenderer <TElement> (elementCreator: ElementCreator<TElement>, opts: Options<TElement> = {}) {
+  constructor (elementCreator: ElementCreator<TElement>, opts: NbRendererOpts<TElement> = {}) {
-  const renderMarkdown = opts.markdownRenderer || identity
+    super()
-  const renderAnsiCodes = opts.ansiCodesRenderer || escapeHTML
-  const highlightCode = opts.codeHighlighter || escapeHTML
 
-  const el = elementCreator
+    this.el = elementCreator
-  const el2 = (tag: string, classes: string[]) => (data: string) => el(tag, classes, data)
+    this.renderMarkdown = opts.markdownRenderer ?? identity
+    this.renderAnsiCodes = opts.ansiCodesRenderer ?? escapeHTML
+    this.highlightCode = opts.codeHighlighter ?? escapeHTML
 
-  const embeddedImageEl = (format: string) => (data: string) => el('img', {
+    const el2 = (tag: string, classes: string[]) => (data: string) => this.el(tag, classes, data)
+
+    const embeddedImageEl = (format: string) => (data: string) => this.el('img', {
       class: 'image-output',
       src: `data:image/${format};base64,${data.replace(/\n/g, '')}`,
     })
 
     // opts.dataRenderers is intentionally included twice; to get the user's
-  // provided renderers in the default dataRenderersOrder before the built-in
+    // provided renderers in the default dataTypesPriority before the built-in
     // renderers and at the same time allow to override any built-in renderer.
-  const dataRenderers: DataRenderers<TElement> = {
+    this.dataRenderers = {
       ...opts.dataRenderers,
       'image/png': embeddedImageEl('png'),
       'image/jpeg': embeddedImageEl('jpeg'),
       'image/svg+xml': el2('div', ['svg-output']),
-    'text/svg+xml': (data) => dataRenderers['image/svg+xml'](data),
+      'text/svg+xml': (data) => this.dataRenderers['image/svg+xml'].call(this, data),
       'text/html': el2('div', ['html-output']),
-    'text/markdown': (data) => dataRenderers['text/html'](renderMarkdown(data)),
+      'text/markdown': (data) => this.el('div', ['html-output'], this.renderMarkdown(data)),
       'text/latex': el2('div', ['latex-output']),
       'application/javascript': el2('script', []),
-    'text/plain': (data) => el('pre', ['text-output'], escapeHTML(data)),
+      'text/plain': (data) => this.el('pre', ['text-output'], escapeHTML(data)),
       ...opts.dataRenderers,
     }
-  const dataRenderersOrder = opts.dataRenderersOrder || Object.keys(dataRenderers)
+    this.dataTypesPriority = opts.dataTypesPriority ?? Object.keys(this.dataRenderers)
-
-  const resolveDataType = (output: DisplayData | ExecuteResult) => {
-    return dataRenderersOrder.find(type => output.data[type] && dataRenderers[type])
   }
 
-  const r = callableObject('Notebook', {
+  /**
-    Notebook: (notebook: Notebook): TElement => {
+   * Renders the given Jupyter *notebook*.
-      const children = notebook.cells.map(cell => r.Cell(cell, notebook))
+   */
-      // Class "worksheet" is for backward compatibility with notebook.js.
+  __call__ (notebook: Notebook): TElement {
-      return el('div', ['notebook', 'worksheet'], children)
+    return this.render(notebook)
-    },
+  }
 
-    Cell: (cell: Cell, notebook: Notebook): TElement => {
+  /**
+   * Renders the given Jupyter *notebook*.
+   */
+  render (notebook: Notebook): TElement {
+    const children = notebook.cells.map(cell => this.renderCell(cell, notebook))
+    return this.el('div', ['notebook'], children)
+  }
+
+  renderCell (cell: Cell, notebook: Notebook): TElement {
     switch (cell.cell_type) {
-        case CellType.Code: return r.CodeCell(cell, notebook)
+      case CellType.Code: return this.renderCodeCell(cell, notebook)
-        case CellType.Markdown: return r.MarkdownCell(cell, notebook)
+      case CellType.Markdown: return this.renderMarkdownCell(cell, notebook)
-        case CellType.Raw: return r.RawCell(cell, notebook)
+      case CellType.Raw: return this.renderRawCell(cell, notebook)
-        default: return el('div', [], '<!-- Unsupported cell type -->')
+      default: return this.el('div', [], '<!-- Unsupported cell type -->')
+    }
   }
-    },
 
-    MarkdownCell: (cell: MarkdownCell, _notebook: Notebook): TElement => {
+  renderMarkdownCell (cell: MarkdownCell, _notebook: Notebook): TElement {
-      return el('div', ['cell', 'markdown-cell'], renderMarkdown(joinText(cell.source)))
+    return this.el('section', ['cell', 'markdown-cell'], this.renderMarkdown(joinText(cell.source)))
-    },
+  }
 
-    RawCell: (cell: RawCell, _notebook: Notebook): TElement => {
+  renderRawCell (cell: RawCell, _notebook: Notebook): TElement {
-      return el('div', ['cell', 'raw-cell'], joinText(cell.source))
+    return this.el('section', ['cell', 'raw-cell'], joinText(cell.source))
-    },
+  }
 
-    CodeCell: (cell: CodeCell, notebook: Notebook): TElement => {
+  renderCodeCell (cell: CodeCell, notebook: Notebook): TElement {
     const source = cell.source.length > 0
-        ? r.Source(cell, notebook)
+      ? this.renderSource(cell, notebook)
-        : el('div')
+      : this.el('div')
 
-      const outputs = coalesceStreams(cell.outputs || [])
+    const outputs = coalesceStreams(cell.outputs ?? [])
-        .map(output => r.Output(output, cell))
+      .map(output => this.renderOutput(output, cell))
 
-      return el('div', ['cell', 'code-cell'], [source, ...outputs])
+    return this.el('section', ['cell', 'code-cell'], [source, ...outputs])
-    },
+  }
 
-    Source: (cell: CodeCell, notebook: Notebook): TElement => {
+  renderSource (cell: CodeCell, notebook: Notebook): TElement {
     const lang = notebookLanguage(notebook)
-      const html = highlightCode(joinText(cell.source), lang)
+    const html = this.highlightCode(joinText(cell.source), lang)
 
-      const codeEl = el('code', { 'class': `lang-${lang}`, 'data-language': lang }, html)
+    const codeEl = this.el('code', { 'class': `lang-${lang}`, 'data-language': lang }, html)
-      const preEl = el('pre', [], [codeEl])
+    const preEl = this.el('pre', [], [codeEl])
 
     // Class "input" is for backward compatibility with notebook.js.
     const attrs = { ...executionCountAttrs(cell), class: 'source input' }
 
-      return el('div', attrs, [preEl])
+    return this.el('div', attrs, [preEl])
-    },
+  }
 
-    Output: (output: Output, cell: CodeCell): TElement => {
+  renderOutput (output: Output, cell: CodeCell): TElement {
     const innerEl = (() => {
       switch (output.output_type) {
-          case OutputType.DisplayData: return r.DisplayData(output)
+        case OutputType.DisplayData: return this.renderDisplayData(output)
-          case OutputType.ExecuteResult: return r.ExecuteResult(output)
+        case OutputType.ExecuteResult: return this.renderExecuteResult(output)
-          case OutputType.Stream: return r.Stream(output)
+        case OutputType.Stream: return this.renderStream(output)
-          case OutputType.Error: return r.Error(output)
+        case OutputType.Error: return this.renderError(output)
-          default: return el('div', [], '<!-- Unsupported output type -->')
+        default: return this.el('div', [], '<!-- Unsupported output type -->')
       }
     })()
     const attrs = { ...executionCountAttrs(cell), class: 'output' }
 
-      return el('div', attrs, [innerEl])
+    return this.el('div', attrs, [innerEl])
-    },
-
-    DisplayData: (output: DisplayData): TElement => {
-      const type = resolveDataType(output)
-      if (type) {
-        return dataRenderers[type](joinText(output.data[type]))
   }
-      return el('div', ['empty-output'])
-    },
 
-    ExecuteResult: (output: ExecuteResult): TElement => {
+  renderDisplayData (output: DisplayData): TElement {
-      const type = resolveDataType(output)
+    const type = this.resolveDataType(output)
     if (type) {
-        return dataRenderers[type](joinText(output.data[type]))
+      return this.renderData(type, joinText(output.data[type]))
+    }
+    return this.el('div', ['empty-output'])
   }
-      return el('div', ['empty-output'])
-    },
 
-    Error: (error: ErrorOutput): TElement => {
+  renderExecuteResult (output: ExecuteResult): TElement {
-      const html = renderAnsiCodes(error.traceback.join('\n'))
+    const type = this.resolveDataType(output)
+    if (type) {
+      return this.renderData(type, joinText(output.data[type]))
+    }
+    return this.el('div', ['empty-output'])
+  }
+
+  renderError (error: ErrorOutput): TElement {
+    const html = this.renderAnsiCodes(error.traceback.join('\n'))
     // Class "pyerr" is for backward compatibility with notebook.js.
-      return el('pre', ['error', 'pyerr'], html)
+    return this.el('pre', ['error', 'pyerr'], html)
-    },
-
-    Stream: (stream: StreamOutput): TElement => {
-      const html = renderAnsiCodes(joinText(stream.text))
-      return el('pre', [stream.name], html)
-    },
-  })
-  return r
   }
 
-export default buildRenderer
+  renderStream (stream: StreamOutput): TElement {
-
+    const html = this.renderAnsiCodes(joinText(stream.text))
-// XXX: An ugly hack to infer return type of generic function that returns
+    return this.el('pre', [stream.name], html)
-// generalized object.
-abstract class DummyClass<T> {
-  renderer = buildRenderer<T>(this.elementCreator())
-  abstract elementCreator (): ElementCreator<T>
   }
-export type NbRenderer<TElement> = DummyClass<TElement>['renderer']
+
+  renderData (mimeType: string, data: string): TElement {
+    const render = this.dataRenderers[mimeType]
+    if (!render) {
+      throw RangeError(`missing renderer for MIME type: ${mimeType}`)
+    }
+    return render.call(this, data)
+  }
+
+  resolveDataType (output: DisplayData | ExecuteResult): string | undefined {
+    return this.dataTypesPriority.find(type => output.data[type])
+  }
+}
+
+export default NbRenderer

packages/ipynb2html-core/src/version.ts

@@ -1,5 +1,6 @@
 import { $INLINE_JSON } from 'ts-transformer-inline-file'
 
+// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
 const { version } = $INLINE_JSON('../package.json')
 
 export default version as string

packages/ipynb2html-core/test/internal/utils.test.ts

@@ -1,31 +1,64 @@
-import { callableObject, escapeHTML, identity } from '@/internal/utils'
+import { CallableInstance, escapeHTML, identity } from '@/internal/utils'
 
 
-describe('.callableObject', () => {
+describe('CallableInstance', () => {
 
-  describe('returned value', () => {
+  class FixtureCallable extends CallableInstance<FixtureCallable> {
-    const template = {
+    readonly salutation: string
-      str: 'allons-y!',
+
-      func1: jest.fn().mockReturnValue(1),
+    constructor (salutation: string) {
-      func2: jest.fn().mockReturnValue(2),
+      super()
+      this.salutation = salutation
     }
-    const subject = callableObject('func1', template)
 
-    it('is a function that calls the specified template function', () => {
+    __call__ (name: string) {
-      expect( subject ).toBeInstanceOf(Function)
+      return this.salute(name)
-      expect( subject('a', 'b') ).toBe(1)
+    }
-      expect( template.func1 ).toBeCalledWith('a', 'b')
+
+    salute (name: string) {
+      return `${this.salutation}, ${name}!`
+    }
+  }
+
+  describe('subclass', () => {
+    it('can be instantiated using new', () => {
+      expect(() => new FixtureCallable('Hello') ).not.toThrow()
+    })
   })
 
-    it('is not the same function as the specified template function', () => {
+  describe('subclass instance', () => {
-      expect( subject ).not.toBe(template.func1)
+    let instance: FixtureCallable
+
+    beforeEach(() => {
+      instance = new FixtureCallable('Hello')
     })
 
-    it('has all enumerable properties of the given template', () => {
+    it('is an instance of its class', () => {
-      expect( subject )
+      expect( instance ).toBeInstanceOf(FixtureCallable)
-        .toHaveProperty('str', template.str)
+      expect( instance.salutation ).toBe('Hello')
-        .toHaveProperty('func1', template.func1)
+      expect( instance.salute('world') ).toBe('Hello, world!')
-        .toHaveProperty('func2', template.func2)
+    })
+
+    it('is an instance of Function', () => {
+      expect( instance ).toBeInstanceOf(Function)
+    })
+
+    it('is a typeof function', () => {
+      expect( typeof instance ).toBe('function')
+    })
+
+    it('has function property "name" that equals the class name', () => {
+      expect( instance.name ).toBe('FixtureCallable')
+    })
+
+    it('has function property "length" that equals number of arguments of the __call__ method', () => {
+      expect( instance.length ).toBe(1)
+    })
+
+    it('can be called, redirects to the method __call__', () => {
+      expect( instance('world') ).toBe('Hello, world!')
+      expect( instance.apply(null, ['world']) ).toBe('Hello, world!')  // eslint-disable-line no-useless-call
+      expect( instance.call(null, 'world') ).toBe('Hello, world!')  // eslint-disable-line no-useless-call
     })
   })
 })

packages/ipynb2html-core/test/mathExtractor.test.ts

@@ -20,7 +20,7 @@ describe('.extractMath', () => {
 
         it('extracts and substitutes math expression in the given text', () => {
           expect(
-            extractMath(`Let's define ${raw}.`)
+            extractMath(`Let's define ${raw}.`),
           ).toEqual(["Let's define @@1@@.", [{ displayMode, raw, value }]])
         })
       })
@@ -31,7 +31,7 @@ describe('.extractMath', () => {
 
         it('extracts and substitutes math expression in the given text', () => {
           expect(
-            extractMath(`Let's define ${raw}.`)
+            extractMath(`Let's define ${raw}.`),
           ).toEqual(["Let's define @@1@@.", [{ displayMode, raw, value }]])
         })
       })
@@ -43,7 +43,7 @@ describe('.extractMath', () => {
 
     it('extracts and substitutes math expression in the given text', () => {
       expect(
-        extractMath(`Let's define ${raw}.`)
+        extractMath(`Let's define ${raw}.`),
       ).toEqual(["Let's define @@1@@.", [{ displayMode: true, raw, value: raw }]])
     })
   })
@@ -52,14 +52,14 @@ describe('.extractMath', () => {
 
     it('escapes @@[0-9]+@@ as @@0[0-9]+@@', () => {
       expect(
-        extractMath('This @@02@@ is not our marker')
+        extractMath('This @@02@@ is not our marker'),
       ).toEqual(['This @@002@@ is not our marker', []])
     })
   })
 
   it('ignores math delimiters inside `inline code`', () => {
     expect(
-      extractMath('`$x$` and ``$`x`$`` is a code, $x$ is not')
+      extractMath('`$x$` and ``$`x`$`` is a code, $x$ is not'),
     ).toEqual([
       '`$x$` and ``$`x`$`` is a code, @@1@@ is not',
       [{ displayMode: false, raw: '$x$', value: 'x' }],
@@ -68,7 +68,7 @@ describe('.extractMath', () => {
 
   it('ignores math delimiters inside `inline code` with line breaks', () => {
     expect(
-      extractMath('`$x\n$` and ``\n$`x`$\n`` is a code, `$x$\n\nis` not')
+      extractMath('`$x\n$` and ``\n$`x`$\n`` is a code, `$x$\n\nis` not'),
     ).toEqual([
       '`$x\n$` and ``\n$`x`$\n`` is a code, `@@1@@\n\nis` not',
       [{ displayMode: false, raw: '$x$', value: 'x' }],
@@ -135,13 +135,13 @@ describe('.restoreMath', () => {
     repl[21] = 'second'
 
     expect(
-      restoreMath("Let's define @@1@@ and @@22@@.", repl)
+      restoreMath("Let's define @@1@@ and @@22@@.", repl),
     ).toEqual("Let's define first and second.")
   })
 
   it('unescapes marker-like sequences', () => {
     expect(
-      restoreMath('This @@001@@ is not our marker, nor @@01@@, but @@1@@ is.', ['this one'])
+      restoreMath('This @@001@@ is not our marker, nor @@01@@, but @@1@@ is.', ['this one']),
     ).toEqual('This @@01@@ is not our marker, nor @@1@@, but this one is.')
   })
 })

packages/ipynb2html-core/test/renderer.test.tsx

@@ -1,19 +1,20 @@
+/* eslint-disable @typescript-eslint/unbound-method */
+
 import '~/test/setup'  // setupFilesAfterEnv doesn't work here
 
 import arrify from 'arrify'
 import { Document, HTMLElement } from 'nodom'
 
 import buildElementCreator from '@/elementCreator'
-import buildRenderer, { NbRenderer, Options as RendererOpts } from '@/renderer'
+import NbRenderer, { NbRendererOpts } from '@/renderer'
 import { DisplayData, MimeBundle, MultilineString, Notebook } from '@/nbformat'
 
 // eslint-disable-next-line @typescript-eslint/no-unused-vars
 import { Anything } from '~/test/support/matchers/toMatchElement'
 import { mockLastResult, mockResults } from '~/test/support/helpers'
-import * as _fixtures from './support/fixtures/notebook'
+import * as fixtures from './support/fixtures/notebook'
 
 const document = new Document()
-const fixtures = _fixtures  // workaround to allow indexed access
 
 
 describe('built renderer', () => {
@@ -27,7 +28,7 @@ describe('built renderer', () => {
   const dataRenderers = {
     'text/custom': rendererMock('DisplayData'),
   }
-  const rendererOpts: RendererOpts<HTMLElement> = {
+  const rendererOpts: NbRendererOpts<HTMLElement> = {
     ansiCodesRenderer,
     codeHighlighter,
     markdownRenderer,
@@ -37,45 +38,46 @@ describe('built renderer', () => {
 
 
   beforeEach(() => {
-    renderer = buildRenderer(elementCreator, rendererOpts)
+    renderer = new NbRenderer(elementCreator, rendererOpts)
   })
 
 
-  describe('.Notebook', () => {
+  describe('.render', () => {
     beforeEach(() => {
-      renderer.Cell = rendererMock('Cell')
+      renderer.renderCell = rendererMock('Cell')
     })
 
-    it('returns div.notebook.worksheet', () => {
+    it('returns div.notebook', () => {
-      expect( renderer.Notebook({ ...notebook, cells: [] }) ).toHtmlEqual(
+      expect( renderer.render({ ...notebook, cells: [] }) ).toHtmlEqual(
-        <div class="notebook worksheet"></div>
+        <div class="notebook"></div>
       )
     })
 
-    it('returns element with $cells converted using .Cell() as the children', () => {
+    it('returns element with $cells converted using .renderCell() as the children', () => {
-      const result = renderer.Notebook(notebook)
+      const result = renderer.render(notebook)
 
       notebook.cells.forEach((cell, idx) => {
-        expect( renderer.Cell ).toHaveBeenNthCalledWith(idx + 1, cell, notebook)
+        expect( renderer.renderCell ).toHaveBeenNthCalledWith(idx + 1, cell, notebook)
       })
-      expect( result.children ).toHtmlEqual(mockResults(renderer.Cell))
+      expect( result.children ).toHtmlEqual(mockResults(renderer.renderCell))
     })
   })
 
 
-  describe('.Cell', () => {
+  describe('.renderCell', () => {
 
     describe.each([
-      'CodeCell', 'MarkdownCell', 'RawCell',
+      'renderCodeCell', 'renderMarkdownCell', 'renderRawCell',
-    ] as const)('with %s', (type) => {
+    ] as const)('with %s', (funcName) => {
-      const cell = fixtures[type]
+      const type = funcName.replace('render', '')
+      const cell = (fixtures as any)[type]
 
-      it(`returns result of calling .${type}() with the given cell`, () => {
+      it(`returns result of calling .${funcName}() with the given cell`, () => {
         const expected = stubElement(type)
-        renderer[type] = jest.fn(() => expected)
+        const rendererFunc = (renderer as any)[funcName] = jest.fn(() => expected)
 
-        expect( renderer.Cell(cell, notebook) ).toBe(expected)
+        expect( renderer.renderCell(cell, notebook) ).toBe(expected)
-        expect( renderer[type] ).toBeCalledWith(cell, notebook)
+        expect( rendererFunc ).toBeCalledWith(cell, notebook)
       })
     })
 
@@ -86,7 +88,7 @@ describe('built renderer', () => {
       } as any
 
       it('returns div with comment "Unsupported cell type"', () => {
-        expect( renderer.Cell(cell, notebook) ).toHtmlEqual(
+        expect( renderer.renderCell(cell, notebook) ).toHtmlEqual(
           <div>
             {{__html: '<!-- Unsupported cell type -->' }}
           </div>
@@ -96,15 +98,15 @@ describe('built renderer', () => {
   })
 
 
-  describe('.MarkdownCell', () => {
+  describe('.renderMarkdownCell', () => {
     eachMultilineVariant(fixtures.MarkdownCell, 'source', (cell) => {
       const source = join(cell.source)
 
-      it('returns div.cell.markdown-cell with the $source converted using markdownRenderer() as content', () => {
+      it('returns section.cell.markdown-cell with the $source converted using markdownRenderer() as content', () => {
-        expect( renderer.MarkdownCell(cell, notebook) ).toHtmlEqual(
+        expect( renderer.renderMarkdownCell(cell, notebook) ).toHtmlEqual(
-          <div class="cell markdown-cell">
+          <section class="cell markdown-cell">
             {{__html: mockLastResult(markdownRenderer) }}
-          </div>
+          </section>
         )
         expect( markdownRenderer ).toBeCalledWith(source)
       })
@@ -112,48 +114,48 @@ describe('built renderer', () => {
   })
 
 
-  describe('.RawCell', () => {
+  describe('.renderRawCell', () => {
     eachMultilineVariant(fixtures.RawCell, 'source', (cell) => {
 
-      it('returns div.cell.raw-cell with the $source as content', () => {
+      it('returns section.cell.raw-cell with the $source as content', () => {
-        expect( renderer.RawCell(cell, notebook) ).toHtmlEqual(
+        expect( renderer.renderRawCell(cell, notebook) ).toHtmlEqual(
-          <div class="cell raw-cell">
+          <section class="cell raw-cell">
             {{__html: join(cell.source) }}
-          </div>
+          </section>
         )
       })
     })
   })
 
 
-  describe('.CodeCell', () => {
+  describe('.renderCodeCell', () => {
     const cell = fixtures.CodeCell
     let result: HTMLElement
 
     beforeEach(() => {
-      renderer.Source = rendererMock('Source')
+      renderer.renderSource = rendererMock('Source')
-      renderer.Output = rendererMock('Output')
+      renderer.renderOutput = rendererMock('Output')
 
-      result = renderer.CodeCell(cell, notebook)
+      result = renderer.renderCodeCell(cell, notebook)
     })
 
-    it('returns div.cell.code-cell', () => {
+    it('returns section.cell.code-cell', () => {
       expect( result ).toMatchElement(
-        <div class="cell code-cell"><Anything /></div>
+        <section class="cell code-cell"><Anything /></section>
       )
     })
 
     describe('with non-empty $source', () => {
 
-      it('returns element with $source rendered using .Source() as children[0]', () => {
+      it('returns element with $source rendered using .renderSource() as children[0]', () => {
-        expect( renderer.Source ).toBeCalledWith(cell, notebook)
+        expect( renderer.renderSource ).toBeCalledWith(cell, notebook)
-        expect( result.children[0] ).toHtmlEqual(mockLastResult(renderer.Source))
+        expect( result.children[0] ).toHtmlEqual(mockLastResult(renderer.renderSource)!)
       })
     })
 
     describe('with empty $source', () => {
       beforeEach(() => {
-        result = renderer.CodeCell({ ...cell, source: [] }, notebook)
+        result = renderer.renderCodeCell({ ...cell, source: [] }, notebook)
       })
 
       it('returns element with empty div as children[0]', () => {
@@ -163,22 +165,22 @@ describe('built renderer', () => {
       })
     })
 
-    it('returns element with $outputs rendered using .Output() as children[1+]', () => {
+    it('returns element with $outputs rendered using .renderOutput() as children[1+]', () => {
       cell.outputs.forEach((output, idx) => {
-        expect( renderer.Output ).toHaveBeenNthCalledWith(idx + 1, output, cell)
+        expect( renderer.renderOutput ).toHaveBeenNthCalledWith(idx + 1, output, cell)
       })
-      expect( result.children.slice(1) ).toHtmlEqual(mockResults(renderer.Output))
+      expect( result.children.slice(1) ).toHtmlEqual(mockResults(renderer.renderOutput))
     })
   })
 
 
-  describe('.Source', () => {
+  describe('.renderSource', () => {
     const cell = fixtures.CodeCell
     const notebookLang = notebook.metadata.language_info!.name
     let result: HTMLElement
 
     beforeEach(() => {
-      result = renderer.Source(cell, notebook)
+      result = renderer.renderSource(cell, notebook)
     })
 
     it('returns div > pre > code', () => {
@@ -206,7 +208,7 @@ describe('built renderer', () => {
         const myCell = { ...cell, execution_count: 2 }
 
         it('has data-execution-count and data-prompt-number attributes', () => {
-          const result = renderer.Source(myCell, notebook)
+          const result = renderer.renderSource(myCell, notebook)
 
           expect( result.attributes ).toMatchObject({
             'data-execution-count': String(myCell.execution_count),
@@ -219,7 +221,7 @@ describe('built renderer', () => {
         const myCell = { ...cell, execution_count: null }
 
         it('has data-execution-count and data-prompt-number attributes', () => {
-          const result = renderer.Source(myCell, notebook)
+          const result = renderer.renderSource(myCell, notebook)
 
           expect( result.attributes )
             .not.toHaveProperty('data-execution-count')
@@ -232,7 +234,7 @@ describe('built renderer', () => {
       let codeEl: HTMLElement
 
       beforeEach(() => {
-        codeEl = renderer.Source(cell, notebook).firstChild!.firstChild as HTMLElement
+        codeEl = renderer.renderSource(cell, notebook).firstChild!.firstChild as HTMLElement
       })
 
       it("has class lang-<lang> where lang is the notebook's language", () => {
@@ -254,7 +256,7 @@ describe('built renderer', () => {
       const notebookLang = 'python'
 
       it('uses the default language: python', () => {
-        const result = renderer.Source(cell, myNotebook)
+        const result = renderer.renderSource(cell, myNotebook)
         const codeEl = result.firstChild!.firstChild as HTMLElement
 
         expect( codeEl.getAttribute('data-language') ).toBe(notebookLang)
@@ -265,19 +267,20 @@ describe('built renderer', () => {
   })
 
 
-  describe('.Output', () => {
+  describe('.renderOutput', () => {
     const cell = { ...fixtures.CodeCell, execution_count: null }
 
     describe.each([
-      'DisplayData', 'ExecuteResult', 'Stream', 'Error',
+      'renderDisplayData', 'renderExecuteResult', 'renderStream', 'renderError',
-    ] as const)('with %s output', (type) => {
+    ] as const)('with %s output', (funcName) => {
 
-      const output = fixtures[type]
+      const type = funcName.replace('render', '')
+      const output = (fixtures as any)[type]
       let result: HTMLElement
 
       beforeEach(() => {
-        renderer[type] = rendererMock(type)
+        renderer[funcName] = rendererMock(type)
-        result = renderer.Output(output, cell)
+        result = renderer.renderOutput(output, cell)
       })
 
       it('returns div.output', () => {
@@ -286,16 +289,16 @@ describe('built renderer', () => {
         )
       })
 
-      it(`returns element with the output rendered using .${type}() as the only child`, () => {
+      it(`returns element with the output rendered using .${funcName}() as the only child`, () => {
-        expect( renderer[type] ).toBeCalledWith(output)
+        expect( renderer[funcName] ).toBeCalledWith(output)
-        expect( result.children ).toHtmlEqual([mockLastResult(renderer[type])])
+        expect( result.children ).toHtmlEqual([mockLastResult(renderer[funcName])!])
       })
 
       describe('when the cell has non-null execution_count', () => {
         const cell = { ...fixtures.CodeCell, execution_count: 2 }
 
         it('returns element with attributes data-execution-count and data-prompt-number', () => {
-          const result = renderer.Output(output, cell)
+          const result = renderer.renderOutput(output, cell)
 
           expect( result.attributes ).toMatchObject({
             'data-execution-count': String(cell.execution_count),
@@ -317,7 +320,7 @@ describe('built renderer', () => {
       }
 
       it('returns div with comment "Unsupported output type"', () => {
-        expect( renderer.Output(output, cell) ).toHtmlEqual(
+        expect( renderer.renderOutput(output, cell) ).toHtmlEqual(
           <div class="output">
             <div>
               {{__html: '<!-- Unsupported output type -->' }}
@@ -329,7 +332,7 @@ describe('built renderer', () => {
   })
 
 
-  describe('.DisplayData', () => {
+  describe('.renderDisplayData', () => {
 
     function displayDataWith (data: MimeBundle): DisplayData {
       return { ...fixtures.DisplayData, data }
@@ -358,7 +361,7 @@ describe('built renderer', () => {
       const displayData = displayDataWith({ 'text/non-sense': 'whaat' })
 
       it('returns div.empty-output', () => {
-        expect( renderer.DisplayData(displayData) ).toHtmlEqual(
+        expect( renderer.renderDisplayData(displayData) ).toHtmlEqual(
           <div class="empty-output"></div>
         )
       })
@@ -370,7 +373,7 @@ describe('built renderer', () => {
         withMimeData(mimeType, ['aW1hZ2Ug\n', 'ZGF0YQ=='], (output) => {
 
           it('returns img.image-output with the data in the src attribute', () => {
-            expect( renderer.DisplayData(output) ).toHtmlEqual(
+            expect( renderer.renderDisplayData(output) ).toHtmlEqual(
               <img class="image-output" src={`data:${mimeType};base64,aW1hZ2UgZGF0YQ==`}></img>
             )
           })
@@ -388,7 +391,7 @@ describe('built renderer', () => {
         withMimeData(mimeType, '<stub>data</stub>', (output, data) => {
 
           it(`returns div${classes.map(x => `.${x}`)} with the data as content`, () => {
-            expect( renderer.DisplayData(output) ).toHtmlEqual(
+            expect( renderer.renderDisplayData(output) ).toHtmlEqual(
               <div class={ classes.join(' ') }>
                 {{__html: join(data) }}
               </div>
@@ -400,7 +403,7 @@ describe('built renderer', () => {
       withMimeData('text/markdown', ['Lorem\n', 'ipsum'], (output, data) => {
 
         it('returns div.html-output with the data converted using markdownRenderer() as content', () => {
-          expect( renderer.DisplayData(output) ).toHtmlEqual(
+          expect( renderer.renderDisplayData(output) ).toHtmlEqual(
             <div class="html-output">
               {{__html: mockLastResult(markdownRenderer) }}
             </div>
@@ -412,7 +415,7 @@ describe('built renderer', () => {
       withMimeData('text/plain', '>_<', (output) => {
 
         it('returns pre.text-output with html-escaped data', () => {
-          expect( renderer.DisplayData(output) ).toHtmlEqual(
+          expect( renderer.renderDisplayData(output) ).toHtmlEqual(
             <pre class="text-output">{ '>_<' }</pre>
           )
         })
@@ -421,7 +424,7 @@ describe('built renderer', () => {
       withMimeData('application/javascript', 'alert("Hello &!")', (output, data) => {
 
         it('returns script with the data', () => {
-          expect( renderer.DisplayData(output) ).toHtmlEqual(
+          expect( renderer.renderDisplayData(output) ).toHtmlEqual(
             <script>{{__html: join(data) }}</script>
           )
         })
@@ -433,8 +436,8 @@ describe('built renderer', () => {
       withMimeData('text/custom', 'Lorem ipsum', (output, data) => {
 
         it('renders the data using the associated external renderer', () => {
-          expect( renderer.DisplayData(output) ).toHtmlEqual(
+          expect( renderer.renderDisplayData(output) ).toHtmlEqual(
-            mockLastResult(dataRenderers['text/custom'])
+            mockLastResult(dataRenderers['text/custom'])!
           )
           expect( dataRenderers['text/custom'] ).toBeCalledWith(join(data))
         })
@@ -450,7 +453,7 @@ describe('built renderer', () => {
       const output = displayDataWith(mimeBundle)
 
       it('renders the data of the MIME type with a higher priority', () => {
-        expect( renderer.DisplayData(output) ).toHtmlEqual(
+        expect( renderer.renderDisplayData(output) ).toHtmlEqual(
           <div class="html-output">
             {{__html: mimeBundle['text/html'] }}
           </div>
@@ -464,8 +467,8 @@ describe('built renderer', () => {
         }
         const output = displayDataWith(mimeBundle)
 
-        expect( renderer.DisplayData(output) ).toHtmlEqual(
+        expect( renderer.renderDisplayData(output) ).toHtmlEqual(
-          mockLastResult(dataRenderers['text/custom'])
+          mockLastResult(dataRenderers['text/custom'])!
         )
       })
     })
@@ -474,7 +477,7 @@ describe('built renderer', () => {
       const dataRenderer = rendererMock('DisplayData')
 
       beforeEach(() => {
-        renderer = buildRenderer(elementCreator, {
+        renderer = new NbRenderer(elementCreator, {
           ...rendererOpts,
           dataRenderers: { 'text/plain': dataRenderer },
         })
@@ -484,19 +487,19 @@ describe('built renderer', () => {
         const data = 'allons-y!'
         const output = displayDataWith({ 'text/plain': [data] })
 
-        expect( renderer.DisplayData(output) ).toBe(mockLastResult(dataRenderer))
+        expect( renderer.renderDisplayData(output) ).toBe(mockLastResult(dataRenderer))
         expect( dataRenderer ).toBeCalledWith(data)
       })
     })
   })
 
 
-  describe('.Error', () => {
+  describe('.renderError', () => {
     const error = fixtures.Error
     const traceback = error.traceback.join('\n')
 
     it('returns pre.error.pyerr with inner $traceback converted using ansiCodesRenderer', () => {
-      expect( renderer.Error(error) ).toHtmlEqual(
+      expect( renderer.renderError(error) ).toHtmlEqual(
         <pre class="error pyerr">
           {{__html: mockLastResult(ansiCodesRenderer) }}
         </pre>
@@ -506,12 +509,12 @@ describe('built renderer', () => {
   })
 
 
-  describe('.Stream', () => {
+  describe('.renderStream', () => {
     eachMultilineVariant(fixtures.Stream, 'text', (stream) => {
       const text = join(stream.text)
 
       it('returns pre.$name with inner $text converted using ansiCodesRenderer', () => {
-        expect( renderer.Stream(stream) ).toHtmlEqual(
+        expect( renderer.renderStream(stream) ).toHtmlEqual(
           <pre class={ stream.name }>
             {{__html: mockLastResult(ansiCodesRenderer) }}
           </pre>

packages/ipynb2html-core/test/tsconfig.json

@@ -1,5 +1,9 @@
-// This file is needed only for VSCode, see https://github.com/palmerhq/tsdx/issues/84.
 {
-  "extends": "../tsconfig.json",
+  "extends": "../../../tsconfig.test.json",
-  "include": ["."],
+  "compilerOptions": {
+    "baseUrl": ".",
+  },
+  "references": [
+    { "path": "../" },
+  ],
 }

packages/ipynb2html-core/tsconfig.json

@@ -5,11 +5,6 @@
     "outDir": "./lib",
     "tsBuildInfoFile": "./.tsbuildinfo",
     "baseUrl": ".",
-    "paths": {
-      "*": ["../../types/*"],
-      "@/*": ["./src/*"],
-      "~/*": ["../../*"],
-    },
   },
   "include": [
     "./src",

packages/ipynb2html/package.json

@@ -1,6 +1,6 @@
 {
   "name": "ipynb2html",
-  "version": "0.1.0-beta.7",
+  "version": "0.3.0",
   "description": "Convert Jupyter Notebook to static HTML",
   "author": "Jakub Jirutka <jakub@jirutka.cz>",
   "license": "MIT",
@@ -23,15 +23,18 @@
   "files": [
     "dist/ipynb2html.min.js*",
     "dist/ipynb2html-full.min.js*",
+    "dist/notebook.min.css*",
     "lib",
-    "src"
+    "src",
+    "styles"
   ],
   "scripts": {
     "build": "ttsc --build",
     "bundle": "rollup -c",
-    "clean": "rimraf coverage/ dist/ lib/ .tsbuildinfo",
+    "clean": "rimraf coverage/ dist/ lib/ .eslintcache .tsbuildinfo",
-    "lint": "eslint --ext .ts,.tsx,.js .",
+    "lint": "PKGDIR=$PWD; cd ../../ && eslint --cache --ext .ts,.tsx,.js $PKGDIR",
-    "prepublishOnly": "run-p bundle readme2md",
+    "minify-css": "csso styles/notebook.css -o dist/notebook.min.css -s dist/notebook.min.css.map",
+    "prepublishOnly": "run-p bundle minify-css readme2md",
     "test": "jest --detectOpenHandles --coverage --verbose",
     "readme2md": "../../scripts/adoc2md -a npm-readme ../../README.adoc > README.md",
     "watch-ts": "ttsc --build --watch"
@@ -41,10 +44,15 @@
   },
   "dependencies": {
     "anser": "^1.4.9",
-    "highlightjs": "^9.12.0",
+    "highlight.js": "^10.7.3",
-    "ipynb2html-core": "0.1.0-beta.7",
+    "ipynb2html-core": "0.3.0",
-    "katex": "^0.11.0",
+    "katex": "^0.13.11",
-    "marked": "^0.7.0"
+    "marked": "^2.0.7"
+  },
+  "devDependencies": {
+    "@types/katex": "^0.11.0",
+    "@types/marked": "^2.0.3",
+    "ansi_up": "^5.0.1"
   },
   "peerDependencies": {
     "nodom": "^2.3.0"

packages/ipynb2html/rollup.config.js

@@ -1,7 +1,8 @@
 import addGitMsg from 'rollup-plugin-add-git-msg'
-import babel from 'rollup-plugin-babel'
+import babel from '@rollup/plugin-babel'
-import commonjs from 'rollup-plugin-commonjs'
+import commonjs from '@rollup/plugin-commonjs'
-import resolve from 'rollup-plugin-node-resolve'
+import license from 'rollup-plugin-node-license'
+import resolve from '@rollup/plugin-node-resolve'
 import { terser } from 'rollup-plugin-terser'
 import ttypescript from 'ttypescript'
 import typescript from 'rollup-plugin-typescript2'
@@ -12,10 +13,10 @@ import pkg from './package.json'
 const extensions = ['.mjs', '.js', '.ts']
 
 const globals = {
-  anser: 'anser',
+  'anser': 'anser',
-  highlightjs: 'hljs',
+  'highlight.js': 'hljs',
-  katex: 'katex',
+  'katex': 'katex',
-  marked: 'marked',
+  'marked': 'marked',
 }
 
 const plugins = [
@@ -32,6 +33,7 @@ const plugins = [
         incremental: true,
       },
     },
+    clean: true,
   }),
   // Resolve node modules.
   resolve({
@@ -43,6 +45,7 @@ const plugins = [
   // Transpile all sources for older browsers and inject needed polyfills.
   babel({
     babelrc: false,
+    babelHelpers: 'bundled',
     // To avoid Babel injecting core-js polyfills into core-js.
     exclude: [/node_modules\/core-js\//],
     extensions,
@@ -65,22 +68,25 @@ const plugins = [
       '* This project is licensed under the terms of the MIT license.'
     ].join('\n'),
   }),
-  // Minify JS.
+  // Generate table of the bundled packages at top of the file.
-  terser({
+  license({ format: 'table' }),
-    ecma: 5,
-    include: [/^.+\.min\.js$/],
-    output: {
-      // Preserve comment injected by addGitMsg.
-      comments: RegExp(`\\$\\{${pkg.name}\\}`),
-    },
-  }),
 ]
 
-const output = (filename, extra = {}) => ['.js', '.min.js'].map(ext => ({
+const output = (filename, extra = {}) => [false, true].map(minify => ({
   name: pkg.name,
-  file: `${filename}${ext}`,
+  file: `${filename}${minify ? '.min.js' : '.js'}`,
   format: 'umd',
   sourcemap: true,
+  plugins: [
+    // Minify JS when building .min.js file.
+    minify && terser({
+      ecma: 5,
+      output: {
+        // Preserve comment injected by addGitMsg and license.
+        comments: RegExp(`(?:\\$\\{${pkg.name}\\}|Bundled npm packages)`),
+      },
+    }),
+  ].filter(Boolean),
   ...extra,
 }))
 

packages/ipynb2html/src/browser.ts

@@ -7,7 +7,7 @@ function unescapeHTML (input: string): string {
   return new DOMParser()
     .parseFromString(input, 'text/html')
     .documentElement
-    .textContent || ''
+    .textContent ?? ''
 }
 
 /**
@@ -39,6 +39,7 @@ export function autoRender (opts: NbRendererOpts = {}): void {
 
   document.querySelectorAll(selector).forEach(script => {
     if (script.textContent && script.parentElement) {
+      // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
       const notebook = JSON.parse(unescapeHTML(script.textContent))
       const nbElement = render(notebook)
       script.parentElement.replaceChild(nbElement, script)

packages/ipynb2html/src/global.d.ts

@@ -2,6 +2,5 @@
 // via global variable. It's an alternative to Anser that doesn't provide
 // bundle for browsers.
 declare class AnsiUp {
-  // eslint-disable-next-line @typescript-eslint/camelcase
   ansi_to_html (input: string): string
 }

packages/ipynb2html/src/index.ts

@@ -1,19 +1,18 @@
 import anser from 'anser'
-import hljs from 'highlightjs'
+import hljs from 'highlight.js'
 import katex, { KatexOptions } from 'katex'
-import marked, { MarkedOptions } from 'marked'
+import marked from 'marked'
 
 import {
   createElementCreator,
   createHtmlRenderer,
-  createNbRenderer,
   MinimalElement,
   NbRenderer,
   NbRendererOpts as BaseOptions,
   Notebook,
 } from 'ipynb2html-core'
 
-import buildMarkdownRenderer from './markdownRenderer'
+import buildMarkdownRenderer, { MarkedOptions } from './markdownRenderer'
 
 
 export { default as version } from './version'
@@ -43,7 +42,7 @@ export type NbRendererOpts<TElement = HTMLElement> = BaseOptions<TElement> & {
  * for this module's function.
  */
 type MinimalDocument<TElement extends MinimalElement> = {
-  createElement (tag: string): TElement,
+  createElement: (tag: string) => TElement,
 }
 
 const defaultKatexOpts: KatexOptions = {
@@ -51,9 +50,14 @@ const defaultKatexOpts: KatexOptions = {
   throwOnError: false,
 }
 
+const defaultMarkedOpts: MarkedOptions = {
+  headerAnchors: true,
+  headerIdsStripAccents: true,
+}
+
 function hljsCodeHighlighter (code: string, lang: string): string {
   return hljs.getLanguage(lang)
-    ? hljs.highlight(lang, code).value
+    ? hljs.highlight(code, { language: lang }).value
     : code
 }
 
@@ -116,18 +120,15 @@ export function createRenderer <TElement extends MinimalElement> (
     codeHighlighter = hljsCodeHighlighter
   }
   if (!markdownRenderer && marked) {
-    if (katex) {
+    const markedOpts = { ...defaultMarkedOpts, ...opts.markedOpts }
-      markdownRenderer = buildMarkdownRenderer(opts.markedOpts, katexOpts)
+    markdownRenderer = buildMarkdownRenderer(markedOpts, katexOpts)
-    } else {
-      markdownRenderer = (text) => marked.parse(text, opts.markedOpts)
-    }
   }
   if (!dataRenderers['text/html'] && katex) {
     const mathRenderer = (tex: string) => katex.renderToString(tex, katexOpts)
     dataRenderers['text/html'] = createHtmlRenderer({ elementCreator, mathRenderer })
   }
 
-  return createNbRenderer(elementCreator, {
+  return new NbRenderer(elementCreator, {
     ansiCodesRenderer,
     codeHighlighter,
     dataRenderers,

packages/ipynb2html/src/markdownRenderer.ts

@@ -1,32 +1,62 @@
-import hljs from 'highlightjs'
+import hljs from 'highlight.js'
 import katex, { KatexOptions } from 'katex'
-import marked, { MarkedOptions } from 'marked'
+import marked, { Slugger } from 'marked'
 
 import { mathExtractor } from 'ipynb2html-core'
 
 
+export type MarkdownRenderer = (markdown: string) => string
+
+export interface MarkedOptions extends marked.MarkedOptions {
+  /** Generate heading anchors (this implies headingIds). */
+  headerAnchors?: boolean
+  headerIdsStripAccents?: boolean
+}
+
+// Removes accents from the given string.
+const stripAccents = (text: string) => text.normalize('NFD').replace(/[\u0300-\u036f]/g, '')
+
+// Removes math markers from the given string.
+const stripMath = (text: string) => mathExtractor.restoreMath(text, []).trim()
+
+class Renderer extends marked.Renderer {
+
+  heading (text: string, level: 1 | 2 | 3 | 4 | 5 | 6, raw: string, slugger: Slugger): string {
+    const opts = this.options as MarkedOptions
+
+    if (!opts.headerIds && !opts.headerAnchors) {
+      return super.heading(text, level, raw, slugger)
+    }
+
+    let id = (opts.headerPrefix ?? '') + slugger.slug(stripMath(raw))
+    if (opts.headerIdsStripAccents) {
+      id = stripAccents(id)
+    }
+
+    if (opts.headerAnchors) {
+      text = `<a class="anchor" href="#${id}" aria-hidden="true"></a>${text}`
+    }
+    return `<h${level} id="${id}">${text}</h${level}>`
+  }
+
+  link (href: string | null, title: string | null, text: string): string {
+    return super.link(href && stripMath(href), title && stripMath(title), text)
+  }
+
+  image (href: string | null, title: string | null, text: string): string {
+    return super.image(href && stripMath(href), title && stripMath(title), stripMath(text))
+  }
+}
+
 function highlight (code: string, lang: string): string {
   return hljs.getLanguage(lang)
-    ? hljs.highlight(lang, code, true).value
+    ? hljs.highlight(code, { language: lang, ignoreIllegals: true }).value
     : code
 }
 
-/**
+const renderer = (markedOpts: MarkedOptions) => (markdown: string) => marked.parse(markdown, markedOpts)
- * Returns a pre-configured marked parser with math support (using KaTeX)
- * and code highlighter (highlight.js).
- *
- * @param {MarkedOptions} markedOpts Options for the marked Markdown renderer.
- * @param {KatexOptions} katexOpts Options for the KaTeX math renderer.
- */
-export default (markedOpts: MarkedOptions = {}, katexOpts: KatexOptions = {}) => {
-  if (hljs) {  // highlightjs may be an optional dependency (in browser bundle)
-    markedOpts = { highlight, ...markedOpts }
-  }
 
-  /**
+const rendererWithMath = (markedOpts: MarkedOptions, katexOpts: KatexOptions) => (markdown: string) => {
-   * Converts the given *markdown* into HTML.
-   */
-  return (markdown: string): string => {
   const [text, math] = mathExtractor.extractMath(markdown)
   const html = marked.parse(text, markedOpts)
 
@@ -35,4 +65,22 @@ export default (markedOpts: MarkedOptions = {}, katexOpts: KatexOptions = {}) =>
   })
   return mathExtractor.restoreMath(html, mathHtml)
 }
+
+/**
+ * Returns a pre-configured marked parser with (optional) math support (using
+ * KaTeX) and code highlighter (highlight.js).
+ *
+ * @param {MarkedOptions} markedOpts Options for the marked Markdown renderer.
+ * @param {KatexOptions} katexOpts Options for the KaTeX math renderer.
+ */
+export default (markedOpts: MarkedOptions = {}, katexOpts: KatexOptions = {}): MarkdownRenderer => {
+
+  markedOpts = { renderer: new Renderer(markedOpts), ...markedOpts }
+  if (hljs) {  // highlight.js may be an optional dependency (in browser bundle)
+    markedOpts = { highlight, ...markedOpts }
+  }
+
+  return katex  // katex may be an optional dependency (in browser bundle)
+    ? rendererWithMath(markedOpts, katexOpts)
+    : renderer(markedOpts)
 }

packages/ipynb2html/src/readNotebookTitle.ts

@@ -3,18 +3,18 @@ import marked from 'marked'
 import { Notebook } from 'ipynb2html-core'
 
 
-class EmptyRenderer extends marked.Renderer {
+class EmptyRenderer extends marked.Renderer {}
 
-  constructor (options?: marked.MarkedOptions) {
+// Override all the EmptyRenderer's methods inherited from marked.Renderer to
-    super(options)
+// always return an empty string.
-
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
-    for (const prop in this) {
+const RendererProto = marked.Renderer.prototype
-      if (this[prop] instanceof Function) {
+for (const prop of Object.getOwnPropertyNames(RendererProto)) {
-        (this as any)[prop] = () => ''
+  if (prop !== 'constructor' && typeof (RendererProto as any)[prop] === 'function') {
-      }
+    (EmptyRenderer.prototype as any)[prop] = () => ''
-    }
   }
 }
+/* eslint-enable @typescript-eslint/no-unsafe-member-access */
 
 class MainTitleRenderer extends EmptyRenderer {
   _titleFound = false

packages/ipynb2html/src/version.ts

@@ -1,5 +1,6 @@
 import { $INLINE_JSON } from 'ts-transformer-inline-file'
 
+// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
 const { version } = $INLINE_JSON('../package.json')
 
 export default version as string

packages/ipynb2html/styles/notebook.css

@@ -0,0 +1,86 @@
+/* Reference styles for ipynb2html */
+
+.nb-notebook {
+  line-height: 1.5;
+}
+
+.nb-cell + .nb-cell {
+  margin-top: 1.4rem;
+}
+
+.nb-raw-cell {
+  font-family: monospace;
+  white-space: pre-wrap;
+}
+
+.nb-code-cell {
+  position: relative;
+}
+
+.nb-source::before,
+.nb-output::before {
+  position: absolute;
+  font-family: monospace;
+  color: #999;
+  left: -7.5em;
+  width: 7em;
+  text-align: right;
+}
+
+.nb-source::before {
+  content: "In [" attr(data-execution-count) "]:";
+}
+.nb-output::before {
+  content: "Out[" attr(data-execution-count) "]:";
+}
+
+.nb-source + .nb-output,
+.nb-output + .nb-output {
+  margin-top: 1.4rem;
+}
+
+.nb-source > pre {
+  background-color: #f7f7f7;
+  border: 1px solid #cfcfcf;
+  border-radius: 2px;
+  padding: 0.5em;
+  margin: 0;
+  overflow-x: auto;
+}
+
+.nb-output {
+  min-height: 1em;
+  width: 100%;
+}
+
+.nb-output > pre {
+  padding: 0.5em;
+  margin: 0;
+  overflow-x: auto;
+}
+
+.nb-output > img {
+  max-width: 100%;
+}
+
+.nb-stdout,
+.nb-stderr {
+  white-space: pre-wrap;
+}
+
+.nb-error,
+.nb-stderr {
+  background-color: #fdd;
+  border-radius: 2px;
+}
+
+@media (max-width: 768px) {
+  .nb-source::before,
+  .nb-output::before {
+    display: block;
+    position: relative;
+    left: 0;
+    padding-bottom: 0.5em;
+    text-align: left;
+  }
+}

packages/ipynb2html/test/global.d.ts

@@ -0,0 +1 @@
+../src/global.d.ts

packages/ipynb2html/test/markdownRenderer.test.tsx

@@ -0,0 +1,152 @@
+import { KatexOptions } from 'katex'
+import parseHtml from 'node-html-parser'
+
+import markdownRenderer, { MarkedOptions } from '@/markdownRenderer'
+
+import '~/test/setup'  // setupFilesAfterEnv doesn't work here
+import { Anything } from '~/test/support/matchers/toMatchElement'
+
+
+let katexOpts: KatexOptions
+let markedOpts: MarkedOptions
+
+beforeEach(() => {
+  katexOpts = {
+    displayMode: true,
+    throwOnError: false,
+  }
+  markedOpts = {}
+})
+
+
+describe('headings', () => {
+
+  it('renders h tag without anchor', () => {
+    expect( render('## Some Title') ).toHtmlEqual(
+      <h2 id="some-title">Some Title</h2>
+    )
+  })
+
+  it('renders math in text, but strips it in id', () => {
+    expect( render('## Integers $\\mathbb{Z}$') ).toMatchElement(
+      <h2 id="integers">
+        Integers <span class="katex"><Anything /></span>
+      </h2>
+    )
+  })
+
+  describe('when headerAnchors is true', () => {
+    beforeEach(() => {
+      markedOpts = { headerAnchors: true }
+    })
+
+    it('renders h tag with anchor', () => {
+      expect( render('## Some Title') ).toHtmlEqual(
+        <h2 id="some-title">
+          <a class="anchor" href="#some-title" aria-hidden="true"></a>Some Title
+        </h2>
+      )
+    })
+
+    it('renders math in text, but strips it in href and id', () => {
+      expect( render('## Integers $\\mathbb{Z}$') ).toMatchElement(
+        <h2 id="integers">
+          <a class="anchor" href="#integers" aria-hidden="true"></a>
+          Integers <span class="katex"><Anything /></span>
+        </h2>
+      )
+    })
+  })
+
+  describe('when headerIds is false', () => {
+    beforeEach(() => {
+      markedOpts = { headerIds: false }
+    })
+
+    it('renders h tag without id and anchor', () => {
+      expect( render('## Some Title') ).toHtmlEqual(
+        <h2>Some Title</h2>
+      )
+    })
+  })
+
+  describe('when headerIdsStripAccents is true', () => {
+    beforeEach(() => {
+      markedOpts = { headerIdsStripAccents: true }
+    })
+
+    it('strips accents in generated id', () => {
+      expect( render('## Příliš žluťoučký kůň') ).toHtmlEqual(
+        <h2 id="prilis-zlutoucky-kun">
+          Příliš žluťoučký kůň
+        </h2>
+      )
+    })
+  })
+})
+
+
+describe('link', () => {
+
+  it('strips math in title', () => {
+    expect( render('[link](https://example.org "This is $\\TeX$!")') ).toHtmlEqual(
+      <p><a href="https://example.org" title="This is !">link</a></p>
+    )
+  })
+
+  it('strips math in href', () => {
+    expect( render('[link](https://example.org/$\\TeX$)') ).toHtmlEqual(
+      <p><a href="https://example.org/">link</a></p>
+    )
+  })
+
+  it('renders math in text', () => {
+    expect( render('[This is $\\TeX$!](https://example.org/)') ).toMatchElement(
+      <p><a href="https://example.org/">This is <span class="katex"><Anything /></span>!</a></p>
+    )
+  })
+})
+
+
+describe('image', () => {
+
+  it('strips math in title', () => {
+    expect( render('![x](https://example.org/img.png "This is $\\TeX$!")') ).toHtmlEqual(
+      <p><img src="https://example.org/img.png" alt="x" title="This is !" /></p>
+    )
+  })
+
+  it('strips math in href', () => {
+    expect( render('![image](https://example.org/$\\TeX$.png)') ).toHtmlEqual(
+      <p><img src="https://example.org/.png" alt="image" /></p>
+    )
+  })
+
+  it('strips math in alt text', () => {
+    expect( render('![This is $\\TeX$!](https://example.org/img.png)') ).toHtmlEqual(
+      <p><img src="https://example.org/img.png" alt="This is !" /></p>
+    )
+  })
+})
+
+
+describe('code', () => {
+
+  it('highlights fenced code block', () => {
+    // Note: We use `backticks` in this example to avoid problem that JSX
+    // implicitly decodes HTML entities, but node-html-parser does not.
+    expect( render('```js\nconsole.log(`Hello, world!`)\n```') ).toHtmlEqual(
+      <pre>
+        <code class="language-js">
+          <span class="hljs-built_in">console</span>.log(<span class="hljs-string">`Hello, world!`</span>)
+        </code>
+      </pre>
+    )
+  })
+})
+
+
+function render (text: string) {
+  const html = markdownRenderer(markedOpts, katexOpts)(text).replace(/\n/, '')
+  return parseHtml(html, { pre: true }).childNodes[0]
+}

packages/ipynb2html/test/readNotebookTitle.test.ts

@@ -1,7 +1,7 @@
-import readNotebookTitle from '@/readNotebookTitle'
-
 import { Notebook, CellType, MarkdownCell } from 'ipynb2html-core'
 
+import readNotebookTitle from '@/readNotebookTitle'
+
 
 const markdownCell = (source: string | string[]): MarkdownCell => ({
   cell_type: CellType.Markdown,

packages/ipynb2html/test/tsconfig.json

@@ -1,5 +1,9 @@
-// This file is needed only for VSCode, see https://github.com/palmerhq/tsdx/issues/84.
 {
-  "extends": "../tsconfig.json",
+  "extends": "../../../tsconfig.test.json",
-  "include": ["."],
+  "compilerOptions": {
+    "baseUrl": ".",
+  },
+  "references": [
+    { "path": "../" },
+  ],
 }

packages/ipynb2html/tsconfig.json

@@ -5,11 +5,6 @@
     "outDir": "./lib",
     "tsBuildInfoFile": "./.tsbuildinfo",
     "baseUrl": ".",
-    "paths": {
-      "*": ["../../types/*"],
-      "@/*": ["./src/*"],
-      "~/*": ["../../*"],
-    },
   },
   "include": [
     "./src",

patches/yarn-version-bump+0.0.3.patch

@@ -0,0 +1,15 @@
+TODO: Remove after https://github.com/chrisdarroch/yarn-bump/pull/1 is merged and released.
+
+diff --git a/node_modules/yarn-version-bump/src/workspace.js b/node_modules/yarn-version-bump/src/workspace.js
+index 28b1dd1..0cf2ecb 100644
+--- a/node_modules/yarn-version-bump/src/workspace.js
++++ b/node_modules/yarn-version-bump/src/workspace.js
+@@ -9,7 +9,7 @@ class Workspace {
+ 
+     get workspaceSnapshot() {
+         return runCommand('yarn',
+-            ['workspaces', 'info', '--silent'],
++            ['--silent', 'workspaces', 'info'],
+             { cwd: this.root }
+         )
+         .then(data => JSON.parse(data))

scripts/adoc2md

@@ -1,4 +1,4 @@
 #!/bin/sh -e
 ( set -o pipefail 2>/dev/null ) && set -o pipefail
 
-asciidoctor -o - -b docbook "$@" | pandoc -f docbook -t markdown_github -o -
+asciidoctor -o - -b docbook "$@" | pandoc -f docbook -t markdown_github --base-header-level 2 -o -

scripts/assemble-license

@@ -0,0 +1,42 @@
+#!/usr/bin/env node
+'use strict'
+
+const fs = require('fs')
+const path = require('path')
+
+
+function extractLicenseTable (filename) {
+  const source = fs.readFileSync(filename, 'utf8')
+
+  const start = source.indexOf('/*!\n * Bundled npm packages')
+  const end = start + source.slice(start).indexOf('*/')
+
+  return source
+    .slice(start, end)
+    .split('\n')
+    .filter(s => s.startsWith(' * |'))
+    .map(s => s.slice(3))
+    .join('\n')
+}
+
+function readLicense () {
+  return fs.readFileSync(path.join(__dirname, '../LICENSE'), 'utf8')
+}
+
+
+const argv = process.argv.slice(2)
+if (argv.length < 1 || ['-h', '--help'].includes(argv[0])) {
+  console.warn('Usage: assemble-license <bundle-file>')
+  process.exit(2)
+}
+
+const bundlePath = path.resolve(argv[0])
+
+console.log(`\
+${readLicense()}
+-------------------------
+
+This product bundles source code of the following projects:
+
+${extractLicenseTable(bundlePath)}\
+`)

scripts/create-archives

@@ -0,0 +1,79 @@
+#!/usr/bin/env node
+'use strict'
+
+const commonPathPrefix = require('common-path-prefix')
+const execa = require('execa')
+const fs = require('fs-extra')
+const path = require('path')
+const tar = require('tar')
+const { ZipFile } = require('yazl')
+
+
+async function writeTarGz (basename, fileList, cwd) {
+  console.log(`Creating ${basename}.tar.gz...`)
+
+  return tar.create({
+    file: `${basename}.tar.gz`,
+    prefix: path.basename(basename),
+    gzip: true,
+    portable: true,
+    cwd: cwd || '.',
+  }, fileList)
+}
+
+async function writeZip (basename, fileList, cwd) {
+  const prefix = path.basename(basename)
+  const zipfile = new ZipFile()
+
+  return new Promise((resolve, reject) => {
+    console.log(`Creating ${basename}.zip...`)
+
+    for (let fname of fileList) {
+      zipfile.addFile(path.join(cwd || '.', fname), path.join(prefix, fname))
+    }
+    zipfile.outputStream
+      .pipe(fs.createWriteStream(`${basename}.zip`))
+      .on('close', resolve)
+      .on('error', reject)
+    zipfile.end()
+  })
+}
+
+async function gitDescribe (prefix) {
+  const output = await execa.stdout('git', [
+    'describe',
+    '--always',
+    `--match=${prefix}*`
+  ])
+  return output.startsWith(prefix) ? output : `v0.0.0-${output}`
+}
+
+async function createArchives (destName, srcFiles) {
+  const version = await gitDescribe('v')
+  destName += `-${version}`
+
+  const srcDir = commonPathPrefix(srcFiles)
+  const fileList = srcFiles.map(p => p.slice(srcDir.length))
+
+  fs.mkdirpSync(path.dirname(destName))
+
+  return Promise.all([
+    writeTarGz(destName, fileList, srcDir),
+    writeZip(destName, fileList, srcDir),
+  ])
+}
+
+
+const argv = process.argv.slice(2)
+if (argv.length < 3 || ['-h', '--help'].includes(argv[0])) {
+  console.warn('Usage: create-archives <dest-basename> <src-file>...')
+  process.exit(2)
+}
+
+const destName = argv[0]
+const srcFiles = argv.slice(1)
+
+createArchives(destName, srcFiles).catch(err => {
+  console.error(err)
+  process.exit(1)
+})

scripts/create-src-tarball

@@ -0,0 +1,19 @@
+#!/bin/sh
+set -eu
+
+cd "$(dirname "$0")/.."
+
+case "${1:-}" in
+    '' | -h | --help) echo "Usage: $0 <out-file>" >&2; exit 2;;
+esac
+
+out_file="$1"
+base_dir=$(basename "$(pwd)")
+base_name=$(basename "${out_file%.tar.gz}")
+
+mkdir -p dist
+tar -czf "$out_file" \
+    -C .. --exclude-vcs \
+    --exclude="**/$out_file" \
+    --xform="s|^$base_dir|$base_name|" \
+    "$base_dir"

test/support/helpers.ts

@@ -1,5 +1,5 @@
 
-type Callable = (...args: any[]) => any
+type Callable = (...args: any[]) => unknown
 
 export type Mock<F extends Callable> = jest.Mock<ReturnType<F>, Parameters<F>>
 
@@ -13,9 +13,9 @@ export function asMock <F extends Callable> (fn: F): Mock<F> {
 export function mockResults <F extends Callable> (fn: F): Array<ReturnType<F>> {
   return asMock(fn).mock.results
     .filter(x => x.type === 'return')
-    .map(x => x.value)
+    .map(x => x.value as ReturnType<F>)
 }
 
-export function mockLastResult <F extends Callable> (fn: F): ReturnType<F> {
+export function mockLastResult <F extends Callable> (fn: F): ReturnType<F> | undefined {
-  return mockResults(fn).pop() as ReturnType<F>
+  return mockResults(fn).pop()
 }

test/support/jsx.ts

@@ -60,7 +60,8 @@ export function createElement (
     } else if (child instanceof NNode) {
       el.appendChild(child)
     } else if (typeof child === 'object' && '__html' in child) {
-      el.innerHTML = child.__html
+      // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
+      el.innerHTML = child.__html as string
     } else {
       el.appendChild(document.createTextNode(String(child)))
     }
@@ -68,6 +69,7 @@ export function createElement (
   return el
 }
 
+// eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
 (global as any).JSX = {
   createElement,
 }

test/support/matchers/toHtmlEqual.ts

@@ -6,8 +6,8 @@ type MatcherResult = jest.CustomMatcherResult
 declare global {
   // eslint-disable-next-line @typescript-eslint/no-namespace
   namespace jest {
-    interface Matchers<R> {
+    interface Matchers<R, T> {
-      toHtmlEqual (expected: HTMLElement | string | Array<HTMLElement | string>): R,
+      toHtmlEqual: (expected: HTMLElement | string | Array<HTMLElement | string>) => R
     }
   }
 }

test/support/matchers/toMatchElement.ts

@@ -10,33 +10,41 @@ type Options = {
 declare global {
   // eslint-disable-next-line @typescript-eslint/no-namespace
   namespace jest {
-    interface Matchers<R> {
+    interface Matchers<R, T> {
-      toMatchElement (expected: HTMLElement, opts?: Options): R,
+      toMatchElement: (expected: HTMLElement, opts?: Options) => R
     }
   }
 }
 
 export const AnythingNode = new class extends Node {
   render () { return '<!--Anything-->' }
+  toString () { return this.render() }
 }()
 
-export const Anything = () => AnythingNode
+export const Anything = (): Node => AnythingNode
+
+function isWritable (obj: any, prop: string): boolean {
+  const desc = Object.getOwnPropertyDescriptor(obj, prop)
+  // eslint-disable-next-line @typescript-eslint/unbound-method
+  return !!desc?.writable || !!desc?.set
+}
 
 function filterWildcardChildren (rec: Node, exp: Node): void {
   if (exp.firstChild === AnythingNode
-      && exp.children.length === 1
+      && exp.childNodes.length === 1
-      && rec instanceof HTMLElement
+      && (rec as HTMLElement).innerHTML
-      && rec.innerHTML
   ) {
-    rec.innerHTML = ''
+    if (isWritable(rec, 'innerHTML')) {
-    rec.children.splice(0, rec.children.length, AnythingNode)
+      (rec as HTMLElement).innerHTML = ''
+    }
+    rec.childNodes.splice(0, rec.childNodes.length, AnythingNode)
     return
   }
-  for (let i = 0; i < exp.children.length && i < rec.children.length; i++) {
+  for (let i = 0; i < exp.childNodes.length && i < rec.childNodes.length; i++) {
-    if (exp.children[i] === AnythingNode) {
+    if (exp.childNodes[i] === AnythingNode) {
-      rec.children[i] = AnythingNode
+      rec.childNodes[i] = AnythingNode
     } else {
-      filterWildcardChildren(exp.children[i], rec.children[i])
+      filterWildcardChildren(rec.childNodes[i], exp.childNodes[i])
     }
   }
 }
@@ -46,13 +54,15 @@ function clearAttributes (node: Node): void {
     node.attributes = {}
     node.className = ''
   }
-  node.children.forEach(clearAttributes)
+  node.childNodes.forEach(clearAttributes)
 }
 
 export function toMatchElement (received: HTMLElement, expected: HTMLElement, opts?: Options): MatcherResult {
+  if (received.cloneNode) {
     received = received.cloneNode(true) as HTMLElement
+  }
 
-  if (opts && opts.ignoreAttrs) {
+  if (opts?.ignoreAttrs) {
     clearAttributes(received)
   }
   filterWildcardChildren(received, expected)

test/tsconfig.json

@@ -0,0 +1,6 @@
+{
+  "extends": "../tsconfig.test.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+  },
+}

tsconfig.base.json

@@ -42,7 +42,9 @@
     /* Module Resolution Options */
     "moduleResolution": "node",               /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
     // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
-    // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+    "paths": {                                /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+      "*": ["../../types/*"],                 /* This path is relative from baseUrl which is defined in tsconfig.json that includes this file inside each project. */
+    },
     // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
     "typeRoots": [                            /* List of folders to include type definitions from. */
       "./types",

tsconfig.json

@@ -3,5 +3,6 @@
   "references": [
     { "path": "./packages/ipynb2html-core" },
     { "path": "./packages/ipynb2html" },
+    { "path": "./packages/ipynb2html-cli" },
   ]
 }

tsconfig.test.json

@@ -0,0 +1,16 @@
+{
+  "extends": "./tsconfig.base.json",
+  "compilerOptions": {
+    "declaration": false,
+    "declarationMap": false,
+    "sourceMap": false,
+    "composite": false,
+    "noEmit": true,
+    "paths": {
+      // These paths are relative from baseUrl which is defined in
+      // tsconfig.json that includes this file inside each project.
+      "@/*": ["../src/*"],
+      "~/*": ["../../../*"],
+    },
+  },
+}