.

.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 @@
+coverage/
+node_modules/
+.DS_Store
+*.d.ts
+*.log
+yarn.lock

.npmrc

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

.prettierignore

@@ -0,0 +1,2 @@
+coverage/
+*.md

index.js

@@ -0,0 +1,85 @@
+/**
+ * @typedef {import('hast').Root} Root
+ * @typedef {import('hast').Properties} Properties
+ * @typedef {import('hast').Element['children'][number]} ElementChild
+ *
+ * @typedef Options
+ *   Configuration.
+ * @property {'_self'|'_blank'|'_parent'|'_top'|false} [target='_blank']
+ *   How to display referenced documents (`string?`: `_self`, `_blank`,
+ *   `_parent`, or `_top`, default: `_blank`).
+ *   Pass `false` to not set `target`s on links.
+ * @property {string[]|string|false} [rel=['nofollow', 'noopener', 'noreferrer']]
+ *   Link types to hint about the referenced documents.
+ *   Pass `false` to not set `rel`s on links.
+ *
+ *   **Note**: when using a `target`, add `noopener` and `noreferrer` to avoid
+ *   exploitation of the `window.opener` API.
+ * @property {string[]} [protocols=['http', 'https']]
+ *   Protocols to check, such as `mailto` or `tel`.
+ * @property {ElementChild|ElementChild[]} [content]
+ *   hast content to insert at the end of external links.
+ *   Will be inserted in a `<span>` element.
+ *
+ *   Useful for improving accessibility by giving users advanced warning when
+ *   opening a new window.
+ * @property {Properties} [contentProperties]
+ *   hast properties to add to the `span` wrapping `content`, when given.
+ */
+
+import {visit} from 'unist-util-visit'
+import {parse} from 'space-separated-tokens'
+import absolute from 'is-absolute-url'
+import extend from 'extend'
+
+const defaultTarget = '_blank'
+const defaultRel = ['nofollow', 'noopener', 'noreferrer']
+const defaultProtocols = ['http', 'https']
+
+/**
+ * Plugin to automatically add `target` and `rel` attributes to external links.
+ *
+ * @type {import('unified').Plugin<[Options?] | void[], Root>}
+ */
+export default function rehypeExternalLinks(options = {}) {
+  const target = options.target
+  const rel = typeof options.rel === 'string' ? parse(options.rel) : options.rel
+  const protocols = options.protocols || defaultProtocols
+  const content =
+    options.content && !Array.isArray(options.content)
+      ? [options.content]
+      : options.content
+  const contentProperties = options.contentProperties || {}
+
+  return (tree) => {
+    visit(tree, 'element', (node) => {
+      if (
+        node.tagName === 'a' &&
+        node.properties &&
+        typeof node.properties.href === 'string'
+      ) {
+        const url = node.properties.href
+        const protocol = url.slice(0, url.indexOf(':'))
+
+        if (absolute(url) && protocols.includes(protocol)) {
+          if (target !== false) {
+            node.properties.target = target || defaultTarget
+          }
+
+          if (rel !== false) {
+            node.properties.rel = (rel || defaultRel).concat()
+          }
+
+          if (content) {
+            node.children.push({
+              type: 'element',
+              tagName: 'span',
+              properties: extend(true, contentProperties),
+              children: extend(true, content)
+            })
+          }
+        }
+      }
+    })
+  }
+}

license

@@ -0,0 +1,22 @@
+(The MIT License)
+
+Copyright (c) 2016 Titus Wormer <tituswormer@gmail.com>
+
+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 +1,86 @@
+{
+  "name": "rehype-external-links",
+  "version": "0.0.0",
+  "description": "rehype plugin to automatically add `target` and `rel` attributes to external links",
+  "license": "MIT",
+  "keywords": [
+    "unified",
+    "rehype",
+    "rehype-plugin",
+    "plugin",
+    "hast",
+    "html",
+    "markdown",
+    "external",
+    "link",
+    "url"
+  ],
+  "repository": "rehypejs/rehype-external-links",
+  "bugs": "https://github.com/rehypejs/rehype-external-links/issues",
+  "funding": {
+    "type": "opencollective",
+    "url": "https://opencollective.com/unified"
+  },
+  "author": "Titus Wormer <tituswormer@gmail.com> (https://wooorm.com)",
+  "contributors": [
+    "Titus Wormer <tituswormer@gmail.com> (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",
+    "extend": "^3.0.0",
+    "is-absolute-url": "^4.0.0",
+    "space-separated-tokens": "^2.0.0",
+    "unified": "^10.0.0",
+    "unist-util-visit": "^4.0.0"
+  },
+  "devDependencies": {
+    "@types/tape": "^4.0.0",
+    "c8": "^7.0.0",
+    "prettier": "^2.0.0",
+    "rehype": "^12.0.0",
+    "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 npm run test-api",
+    "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
+  }
+}