245 lines
		
	
	
		
			5.9 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
			
		
		
	
	
			245 lines
		
	
	
		
			5.9 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
<p align="center">
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  <a href="http://gulpjs.com">
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    <img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png">
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  </a>
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</p>
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# interpret
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[![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Build Status][ci-image]][ci-url] [![Coveralls Status][coveralls-image]][coveralls-url]
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A dictionary of file extensions and associated module loaders.
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## What is it
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This is used by [Liftoff] to automatically require dependencies for configuration files, and by [rechoir] for registering module loaders.
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## How to use it
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Consumers should use the exported `extensions` or `jsVariants` object to determine which module should be loaded for a given extension. If a matching extension is found, consumers should do the following:
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1.  If the value is null, do nothing.
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2.  If the value is a string, try to require it.
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3.  If the value is an object, try to require the `module` property. If successful, the `register` property (a function) should be called with the module passed as the first argument. **Advanced:** An optional second argument can be provided to replace the default configuration for a hook.
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4.  If the value is an array, iterate over it, attempting step #2 or #3 until one of the attempts does not throw.
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## API
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This module provides two top-level properties: `extensions` and `jsVariants`.
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**Note:** This module does not depend on any of the loaders it recommends; instead, end-users are expected to install the hooks they want to use for the file types they want to use. See supported extensions and their hooks in the sections below.
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### `extensions`
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A mapping of file extensions to modules which provide a [require.extensions] loader.
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File extension keys are all in the format of `'.foo'` or `'.foo.bar'` and module loader values are either `null` if the loader should fallthrough to node's loader,
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or a string representing the module to be required, an object of `{ module: 'foobar', register: function }`, or an array containing those strings and/or objects.
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A sample of an entry containing multiple hooks would look like:
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```js
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{
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  '.ts': [
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    'ts-node/register',
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    'sucrase/register/ts',
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    {
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      module: '@babel/register',
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      register: function(hook) {
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        hook({
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          extensions: '.ts',
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          rootMode: 'upward-optional',
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          ignore: [ignoreNonBabelAndNodeModules],
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        });
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      },
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    },
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  ],
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}
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```
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**Supported extensions and their hooks**
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```yaml file=scripts/extensions.yaml
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.babel.js:
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  - '@babel/register'
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.babel.jsx:
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  - '@babel/register'
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.babel.ts:
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  - '@babel/register'
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.babel.tsx:
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  - '@babel/register'
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.cjs:
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  - interpret/cjs-stub
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.coffee:
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  - coffeescript/register
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.coffee.md:
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  - coffeescript/register
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.cts:
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  - ts-node/register
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.esbuild.js:
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  - esbuild-register/dist/node
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.esbuild.jsx:
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  - esbuild-register/dist/node
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.esbuild.ts:
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  - esbuild-register/dist/node
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.esbuild.tsx:
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  - esbuild-register/dist/node
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.esm.js:
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  - esm
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.js:
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  - built-in node.js loader
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.json:
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  - built-in node.js loader
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.json5:
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  - json5/lib/register
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.jsx:
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  - '@babel/register'
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  - sucrase/register/jsx
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.litcoffee:
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  - coffeescript/register
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.mdx:
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  - '@mdx-js/register'
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.mjs:
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  - interpret/mjs-stub
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.node:
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  - built-in node.js loader
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.sucrase.js:
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  - sucrase/dist/register
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.sucrase.jsx:
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  - sucrase/dist/register
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.sucrase.ts:
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  - sucrase/dist/register
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.sucrase.tsx:
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  - sucrase/dist/register
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.swc.js:
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  - '@swc/register'
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.swc.jsx:
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  - '@swc/register'
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.swc.ts:
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  - '@swc/register'
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.swc.tsx:
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  - '@swc/register'
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.toml:
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  - toml-require
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.ts:
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  - ts-node/register
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  - sucrase/register/ts
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  - '@babel/register'
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  - esbuild-register/dist/node
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  - '@swc/register'
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.tsx:
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  - ts-node/register
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  - sucrase/register/tsx
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  - '@babel/register'
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  - esbuild-register/dist/node
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  - '@swc/register'
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.yaml:
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  - yaml-hook/register
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.yml:
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  - yaml-hook/register
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```
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### `jsVariants`
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The `jsVariants` is the same mapping as above, but only include the extensions which are variants of JavaScript.
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**Supported extensions and their hooks**
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```yaml file=scripts/jsVariants.yaml
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.babel.js:
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  - '@babel/register'
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.babel.jsx:
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  - '@babel/register'
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.babel.ts:
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  - '@babel/register'
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.babel.tsx:
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  - '@babel/register'
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.cjs:
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  - interpret/cjs-stub
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.coffee:
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  - coffeescript/register
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.coffee.md:
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  - coffeescript/register
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.esbuild.js:
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  - esbuild-register/dist/node
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.esbuild.jsx:
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  - esbuild-register/dist/node
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.esbuild.ts:
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  - esbuild-register/dist/node
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.esbuild.tsx:
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  - esbuild-register/dist/node
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.esm.js:
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  - esm
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.js:
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  - built-in node.js loader
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.jsx:
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  - '@babel/register'
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  - sucrase/register/jsx
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.litcoffee:
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  - coffeescript/register
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.mdx:
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  - '@mdx-js/register'
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.mjs:
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  - interpret/mjs-stub
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.sucrase.js:
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  - sucrase/dist/register
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.sucrase.jsx:
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  - sucrase/dist/register
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.sucrase.ts:
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  - sucrase/dist/register
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.sucrase.tsx:
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  - sucrase/dist/register
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.swc.js:
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  - '@swc/register'
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.swc.jsx:
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  - '@swc/register'
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.swc.ts:
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  - '@swc/register'
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.swc.tsx:
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  - '@swc/register'
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.ts:
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  - ts-node/register
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  - sucrase/register/ts
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  - '@babel/register'
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  - esbuild-register/dist/node
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  - '@swc/register'
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.tsx:
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  - ts-node/register
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  - sucrase/register/tsx
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  - '@babel/register'
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  - esbuild-register/dist/node
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  - '@swc/register'
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```
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## License
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MIT
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<!-- prettier-ignore-start -->
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[downloads-image]: https://img.shields.io/npm/dm/interpret.svg?style=flat-square
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[npm-url]: https://www.npmjs.com/package/interpret
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[npm-image]: https://img.shields.io/npm/v/interpret.svg?style=flat-square
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[ci-url]: https://github.com/gulpjs/interpret/actions?query=workflow:dev
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[ci-image]: https://img.shields.io/github/workflow/status/gulpjs/interpret/dev?style=flat-square
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[coveralls-url]: https://coveralls.io/r/gulpjs/interpret
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[coveralls-image]: https://img.shields.io/coveralls/gulpjs/interpret/master.svg?style=flat-square
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<!-- prettier-ignore-end -->
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<!-- prettier-ignore-start -->
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[Liftoff]: http://github.com/gulpjs/liftoff
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[rechoir]: http://github.com/gulpjs/rechoir
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[require.extensions]: https://nodejs.org/api/modules.html#requireextensions
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<!-- prettier-ignore-end -->
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