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63 lines
1.8 KiB
Markdown
63 lines
1.8 KiB
Markdown
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# compressible
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[![NPM Version][npm-image]][npm-url]
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[![NPM Downloads][downloads-image]][downloads-url]
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[![Node.js Version][node-version-image]][node-version-url]
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[![Build Status][travis-image]][travis-url]
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[![Test Coverage][coveralls-image]][coveralls-url]
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Compressible `Content-Type` / `mime` checking.
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## Installation
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```sh
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$ npm install compressible
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```
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## API
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<!-- eslint-disable no-unused-vars -->
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```js
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var compressible = require('compressible')
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```
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### compressible(type)
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Checks if the given `Content-Type` is compressible. The `type` argument is expected
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to be a value MIME type or `Content-Type` string, though no validation is performed.
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The MIME is looked up in the [`mime-db`](https://www.npmjs.com/package/mime-db) and
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if there is compressible information in the database entry, that is returned. Otherwise,
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this module will fallback to `true` for the following types:
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* `text/*`
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* `*/*+json`
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* `*/*+text`
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* `*/*+xml`
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If this module is not sure if a type is specifically compressible or specifically
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uncompressible, `undefined` is returned.
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<!-- eslint-disable no-undef -->
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```js
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compressible('text/html') // => true
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compressible('image/png') // => false
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```
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## License
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[MIT](LICENSE)
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[npm-image]: https://img.shields.io/npm/v/compressible.svg
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[npm-url]: https://npmjs.org/package/compressible
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[node-version-image]: https://img.shields.io/node/v/compressible.svg
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[node-version-url]: https://nodejs.org/en/download/
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[travis-image]: https://img.shields.io/travis/jshttp/compressible/master.svg
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[travis-url]: https://travis-ci.org/jshttp/compressible
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[coveralls-image]: https://img.shields.io/coveralls/jshttp/compressible/master.svg
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[coveralls-url]: https://coveralls.io/r/jshttp/compressible?branch=master
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[downloads-image]: https://img.shields.io/npm/dm/compressible.svg
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[downloads-url]: https://npmjs.org/package/compressible
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