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185 lines
7.2 KiB
Markdown
185 lines
7.2 KiB
Markdown
# strip-comments [](https://www.npmjs.com/package/strip-comments) [](https://npmjs.org/package/strip-comments) [](https://npmjs.org/package/strip-comments) [](https://travis-ci.org/jonschlinkert/strip-comments)
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> Strip comments from code. Removes line comments, block comments, the first comment only, or all comments. Optionally leave protected comments unharmed.
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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](#install)
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- [Usage](#usage)
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- [API](#api)
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- [About](#about)
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_(TOC generated by [verb](https://github.com/verbose/verb) using [markdown-toc](https://github.com/jonschlinkert/markdown-toc))_
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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 strip-comments
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```
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## Usage
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By default all comments are stripped.
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```js
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const strip = require('strip-comments');
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const str = strip('const foo = "bar";// this is a comment\n /* me too *\/');
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console.log(str);
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// => 'const foo = "bar";\n'
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```
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For more use-cases see the [tests](./test/test.js)
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## API
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### [strip](index.js#L34)
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Strip all code comments from the given `input`, including protected comments that start with `!`, unless disabled by setting `options.keepProtected` to true.
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**Params**
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* `input` **{String}**: string from which to strip comments
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* `options` **{Object}**: optional options, passed to [extract-comments](https://github.com/jonschlinkert/extract-comments)
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* `returns` **{String}**: modified input
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**Options**
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- `line` **{Boolean}**: if `false` strip only block comments, default `true`
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- `block` **{Boolean}**: if `false` strip only line comments, default `true`
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- `keepProtected` **{Boolean}**: Keep ignored comments (e.g. `/*!`, `/**!` and `//!`)
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- `preserveNewlines` **{Boolean}**: Preserve newlines after comments are stripped
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**Example**
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```js
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const str = strip('const foo = "bar";// this is a comment\n /* me too */');
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console.log(str);
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// => 'const foo = "bar";'
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```
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### [.block](index.js#L54)
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Strip only block comments.
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**Params**
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* `input` **{String}**: string from which to strip comments
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* `options` **{Object}**: pass `opts.keepProtected: true` to keep ignored comments (e.g. `/*!`)
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* `returns` **{String}**: modified string
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**Example**
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```js
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const strip = require('..');
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const str = strip.block('const foo = "bar";// this is a comment\n /* me too */');
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console.log(str);
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// => 'const foo = "bar";// this is a comment'
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```
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### [.line](index.js#L73)
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Strip only line comments.
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**Params**
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* `input` **{String}**: string from which to strip comments
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* `options` **{Object}**: pass `opts.keepProtected: true` to keep ignored comments (e.g. `//!`)
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* `returns` **{String}**: modified string
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**Example**
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```js
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const str = strip.line('const foo = "bar";// this is a comment\n /* me too */');
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console.log(str);
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// => 'const foo = "bar";\n/* me too */'
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```
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### [.first](index.js#L93)
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Strip the first comment from the given `input`. Or, if `opts.keepProtected` is true, the first non-protected comment will be stripped.
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**Params**
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* `input` **{String}**
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* `options` **{Object}**: pass `opts.keepProtected: true` to keep comments with `!`
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* `returns` **{String}**
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**Example**
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```js
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const output = strip.first(input, { keepProtected: true });
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console.log(output);
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// => '//! first comment\nfoo; '
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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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* [babel-extract-comments](https://www.npmjs.com/package/babel-extract-comments): Uses babel (babylon) to extract JavaScript code comments from a JavaScript string or file. | [homepage](https://github.com/jonschlinkert/babel-extract-comments "Uses babel (babylon) to extract JavaScript code comments from a JavaScript string or file.")
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* [code-context](https://www.npmjs.com/package/code-context): Parse a string of javascript to determine the context for functions, variables and comments based… [more](https://github.com/jonschlinkert/code-context) | [homepage](https://github.com/jonschlinkert/code-context "Parse a string of javascript to determine the context for functions, variables and comments based on the code that follows.")
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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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* [parse-code-context](https://www.npmjs.com/package/parse-code-context): Parse code context in a single line of javascript, for functions, variable declarations, methods, prototype… [more](https://github.com/jonschlinkert/parse-code-context) | [homepage](https://github.com/jonschlinkert/parse-code-context "Parse code context in a single line of javascript, for functions, variable declarations, methods, prototype properties, prototype methods etc.")
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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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| 59 | [jonschlinkert](https://github.com/jonschlinkert) |
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| 4 | [charlike-old](https://github.com/charlike-old) |
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| 2 | [mk-pmb](https://github.com/mk-pmb) |
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| 1 | [kgryte](https://github.com/kgryte) |
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| 1 | [epicoxymoron](https://github.com/epicoxymoron) |
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### Author
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**Jon Schlinkert**
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* [LinkedIn Profile](https://linkedin.com/in/jonschlinkert)
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* [GitHub Profile](https://github.com/jonschlinkert)
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* [Twitter Profile](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 March 24, 2018._ |