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131 lines
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131 lines
5.1 KiB
Markdown
# babel-extract-comments [](https://www.npmjs.com/package/babel-extract-comments) [](https://npmjs.org/package/babel-extract-comments) [](https://npmjs.org/package/babel-extract-comments) [](https://travis-ci.org/jonschlinkert/babel-extract-comments)
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> Uses babel (babylon) to extract JavaScript code comments from a JavaScript string or file.
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Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support.
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## Install
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Install with [npm](https://www.npmjs.com/):
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```sh
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$ npm install --save babel-extract-comments
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```
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## Usage
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Add to your Node.js/JavaScript project with the following line of code:
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```js
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const extract = require('babel-extract-comments');
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```
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## API
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### [extract](index.js#L32)
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Extract code comments from the given `string`.
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**Params**
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* `string` **{String}**: String of javascript
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* `returns` **{Array}**: Array of code comment objects.
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**Example**
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```js
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var extract = require('babel-extract-comments');
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console.log(extract('// this is a code comment'));
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// [{ type: 'CommentBlock',
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// value: '!\n * babel-extract-comments <https://github.com/jonschlinkert/babel-extract-comments>\n *\n *
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// Copyright (c) 2014-2018, Jon Schlinkert.\n * Released under the MIT License.\n ',
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// start: 0,
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// end: 173,
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// loc: SourceLocation { start: [Position], end: [Position] } }]
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```
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### [.file](index.js#L53)
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Extract code comments from a JavaScript file.
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**Params**
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* `file` **{String}**: Filepath to the file to parse.
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* `options` **{Object}**: Options to pass to [esprima](http://esprima.org).
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* `returns` **{Array}**: Array of code comment objects.
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**Example**
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```js
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console.log(extract.file('some-file.js'), { cwd: 'some/path' });
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// [ { type: 'Line',
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// value: ' this is a line comment',
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// range: [ 0, 25 ],
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// loc: { start: { line: 1, column: 0 }, end: { line: 1, column: 25 } } } ]
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```
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## About
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<details>
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<summary><strong>Contributing</strong></summary>
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Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
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</details>
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<details>
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<summary><strong>Running Tests</strong></summary>
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Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:
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```sh
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$ npm install && npm test
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```
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</details>
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<details>
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<summary><strong>Building docs</strong></summary>
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_(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_
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To generate the readme, run the following command:
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```sh
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$ npm install -g verbose/verb#dev verb-generate-readme && verb
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```
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</details>
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### Related projects
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You might also be interested in these projects:
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* [esprima-extract-comments](https://www.npmjs.com/package/esprima-extract-comments): Extract code comments from string or from a glob of files using esprima. | [homepage](https://github.com/jonschlinkert/esprima-extract-comments "Extract code comments from string or from a glob of files using esprima.")
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* [extract-comments](https://www.npmjs.com/package/extract-comments): Uses esprima to extract line and block comments from a string of JavaScript. Also optionally… [more](https://github.com/jonschlinkert/extract-comments) | [homepage](https://github.com/jonschlinkert/extract-comments "Uses esprima to extract line and block comments from a string of JavaScript. Also optionally parses code context (the next line of code after a comment).")
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* [js-comments](https://www.npmjs.com/package/js-comments): Parse JavaScript code comments and generate API documentation. | [homepage](https://github.com/jonschlinkert/js-comments "Parse JavaScript code comments and generate API documentation.")
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* [parse-comments](https://www.npmjs.com/package/parse-comments): Parse code comments from JavaScript or any language that uses the same format. | [homepage](https://github.com/jonschlinkert/parse-comments "Parse code comments from JavaScript or any language that uses the same format.")
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### Contributors
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| **Commits** | **Contributor** |
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| --- | --- |
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| 4 | [jonschlinkert](https://github.com/jonschlinkert) |
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| 1 | [eventualbuddha](https://github.com/eventualbuddha) |
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### Author
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**Jon Schlinkert**
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* [linkedin/in/jonschlinkert](https://linkedin.com/in/jonschlinkert)
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* [github/jonschlinkert](https://github.com/jonschlinkert)
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* [twitter/jonschlinkert](https://twitter.com/jonschlinkert)
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### License
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Copyright © 2018, [Jon Schlinkert](https://github.com/jonschlinkert).
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Released under the [MIT License](LICENSE).
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***
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_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on February 12, 2018._ |