.

.editorconfig

@@ -0,0 +1,9 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true

.github/workflows/bb.yml

@@ -0,0 +1,13 @@
+name: bb
+on:
+  issues:
+    types: [opened, reopened, edited, closed, labeled, unlabeled]
+  pull_request_target:
+    types: [opened, reopened, edited, closed, labeled, unlabeled]
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: unifiedjs/beep-boop-beta@main
+        with:
+          repo-token: ${{secrets.GITHUB_TOKEN}}

.github/workflows/main.yml

@@ -0,0 +1,21 @@
+name: main
+on:
+  - pull_request
+  - push
+jobs:
+  main:
+    name: ${{matrix.node}}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dcodeIO/setup-node-nvm@master
+        with:
+          node-version: ${{matrix.node}}
+      - run: npm install
+      - run: npm test
+      - uses: codecov/codecov-action@v1
+    strategy:
+      matrix:
+        node:
+          - lts/erbium
+          - node

.gitignore

@@ -0,0 +1,6 @@
+.DS_Store
+*.d.ts
+*.log
+coverage/
+node_modules/
+yarn.lock

.npmrc

@@ -0,0 +1 @@
+package-lock=false

.prettierignore

@@ -0,0 +1,3 @@
+coverage/
+*.html
+*.md

index.js

@@ -0,0 +1,60 @@
+/**
+ * @typedef {import('hast').Root} Root
+ * @typedef {import('hast').Element} Element
+ *
+ * @typedef Options
+ *   Configuration.
+ * @property {number|[number, number]} [age=[16, 18]]
+ *   Target age group.
+ *   This is the age your target audience was still in school.
+ *   Set it to 18 if you expect all readers to have finished high school,
+ *   21 if you expect your readers to all be college graduates, etc.
+ *   Can be two numbers in an array to get two estimates.
+ * @property {string} [mainSelector]
+ *   CSS selector to body of content.
+ *   Useful to exclude other things, such as the head, ads, styles, scripts, and
+ *   other random stuff, by focussing all strategies in one element.
+ */
+
+import {select} from 'hast-util-select'
+import {readingTime} from 'hast-util-reading-time'
+
+/**
+ * Plugin to infer file metadata from the document.
+ *
+ * @type {import('unified').Plugin<[Options?]|[], Root>}
+ */
+export default function rehypeInferReadingTimeMeta(options = {}) {
+  const {age = [14, 18], mainSelector} = options
+
+  return (tree, file) => {
+    const main = mainSelector ? select(mainSelector, tree) : tree
+    /** @type {[number, number]|number|undefined} */
+    let time
+
+    if (main) {
+      if (Array.isArray(age)) {
+        // @ts-expect-error: hush, always two items.
+        time = age
+          .slice(0, 2)
+          .map((age) => readingTime(main, {age}))
+          .sort((a, b) => a - b)
+      } else {
+        time = readingTime(main, {age})
+      }
+    }
+
+    if (time) {
+      const matter = /** @type {Record<string, unknown>} */ (
+        file.data.matter || {}
+      )
+      const meta = /** @type {Record<string, unknown>} */ (
+        file.data.meta || (file.data.meta = {})
+      )
+
+      if (!matter.readingTime && !meta.readingTime) {
+        meta.readingTime = time
+      }
+    }
+  }
+}

license

@@ -0,0 +1,22 @@
+(The MIT License)
+
+Copyright (c) 2021 Titus Wormer <[email protected]>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

package.json

@@ -0,0 +1,87 @@
+{
+  "name": "rehype-infer-reading-time-meta",
+  "version": "0.0.0",
+  "description": "rehype plugin to infer reading time as file metadata from the document",
+  "license": "MIT",
+  "keywords": [
+    "unified",
+    "rehype",
+    "rehype-plugin",
+    "plugin",
+    "html",
+    "hast",
+    "file",
+    "meta",
+    "reading",
+    "time",
+    "estimate",
+    "reading-time"
+  ],
+  "repository": "rehypejs/rehype-infer-reading-time-meta",
+  "bugs": "https://github.com/rehypejs/rehype-infer-reading-time-meta/issues",
+  "funding": {
+    "type": "opencollective",
+    "url": "https://opencollective.com/unified"
+  },
+  "author": "Titus Wormer <[email protected]> (https://wooorm.com)",
+  "contributors": [
+    "Titus Wormer <[email protected]> (https://wooorm.com)"
+  ],
+  "sideEffects": false,
+  "type": "module",
+  "main": "index.js",
+  "types": "index.d.ts",
+  "files": [
+    "index.d.ts",
+    "index.js"
+  ],
+  "dependencies": {
+    "@types/hast": "^2.0.0",
+    "hast-util-reading-time": "^1.0.0",
+    "hast-util-select": "^5.0.0",
+    "unified": "^10.0.0"
+  },
+  "devDependencies": {
+    "@types/tape": "^4.0.0",
+    "c8": "^7.0.0",
+    "prettier": "^2.0.0",
+    "rehype": "^12.0.0",
+    "rehype-meta": "^3.0.0",
+    "remark-cli": "^10.0.0",
+    "remark-preset-wooorm": "^9.0.0",
+    "rimraf": "^3.0.0",
+    "tape": "^5.0.0",
+    "type-coverage": "^2.0.0",
+    "typescript": "^4.0.0",
+    "xo": "^0.44.0"
+  },
+  "scripts": {
+    "build": "rimraf \"*.d.ts\" && tsc && type-coverage",
+    "format": "remark . -qfo && prettier . -w --loglevel warn && xo --fix",
+    "test-api": "node --conditions development test.js",
+    "test-coverage": "c8 --check-coverage --branches 100 --functions 100 --lines 100 --statements 100 --reporter lcov node --conditions development test.js",
+    "test": "npm run build && npm run format && npm run test-coverage"
+  },
+  "prettier": {
+    "tabWidth": 2,
+    "useTabs": false,
+    "singleQuote": true,
+    "bracketSpacing": false,
+    "semi": false,
+    "trailingComma": "none"
+  },
+  "xo": {
+    "prettier": true
+  },
+  "remarkConfig": {
+    "plugins": [
+      "preset-wooorm"
+    ]
+  },
+  "typeCoverage": {
+    "atLeast": 100,
+    "detail": true,
+    "strict": true,
+    "ignoreCatch": true
+  }
+}