1 | <p align="center">
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2 | <a href="http://gulpjs.com">
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3 | <img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png">
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4 | </a>
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5 | </p>
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6 |
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7 | # interpret
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8 |
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9 | [![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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10 |
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11 | A dictionary of file extensions and associated module loaders.
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12 |
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13 | ## What is it
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14 |
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15 | This is used by [Liftoff] to automatically require dependencies for configuration files, and by [rechoir] for registering module loaders.
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16 |
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17 | ## How to use it
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18 |
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19 | 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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20 |
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21 | 1. If the value is null, do nothing.
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22 | 2. If the value is a string, try to require it.
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23 | 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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24 | 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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25 |
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26 | ## API
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27 |
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28 | This module provides two top-level properties: `extensions` and `jsVariants`.
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29 |
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30 | **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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31 |
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32 | ### `extensions`
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33 |
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34 | A mapping of file extensions to modules which provide a [require.extensions] loader.
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35 |
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36 | 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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37 | 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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38 |
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39 | A sample of an entry containing multiple hooks would look like:
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40 |
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41 | ```js
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42 | {
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43 | '.ts': [
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44 | 'ts-node/register',
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45 | 'sucrase/register/ts',
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46 | {
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47 | module: '@babel/register',
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48 | register: function(hook) {
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49 | hook({
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50 | extensions: '.ts',
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51 | rootMode: 'upward-optional',
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52 | ignore: [ignoreNonBabelAndNodeModules],
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53 | });
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54 | },
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55 | },
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56 | ],
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57 | }
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58 | ```
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59 |
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60 | **Supported extensions and their hooks**
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61 |
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62 | ```yaml file=scripts/extensions.yaml
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63 | .babel.js:
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64 | - '@babel/register'
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65 | .babel.jsx:
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66 | - '@babel/register'
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67 | .babel.ts:
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68 | - '@babel/register'
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69 | .babel.tsx:
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70 | - '@babel/register'
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71 | .cjs:
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72 | - interpret/cjs-stub
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73 | .coffee:
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74 | - coffeescript/register
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75 | .coffee.md:
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76 | - coffeescript/register
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77 | .cts:
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78 | - ts-node/register
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79 | .esbuild.js:
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80 | - esbuild-register/dist/node
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81 | .esbuild.jsx:
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82 | - esbuild-register/dist/node
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83 | .esbuild.ts:
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84 | - esbuild-register/dist/node
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85 | .esbuild.tsx:
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86 | - esbuild-register/dist/node
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87 | .esm.js:
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88 | - esm
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89 | .js:
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90 | - built-in node.js loader
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91 | .json:
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92 | - built-in node.js loader
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93 | .json5:
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94 | - json5/lib/register
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95 | .jsx:
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96 | - '@babel/register'
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97 | - sucrase/register/jsx
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98 | .litcoffee:
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99 | - coffeescript/register
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100 | .mdx:
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101 | - '@mdx-js/register'
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102 | .mjs:
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103 | - interpret/mjs-stub
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104 | .node:
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105 | - built-in node.js loader
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106 | .sucrase.js:
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107 | - sucrase/dist/register
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108 | .sucrase.jsx:
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109 | - sucrase/dist/register
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110 | .sucrase.ts:
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111 | - sucrase/dist/register
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112 | .sucrase.tsx:
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113 | - sucrase/dist/register
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114 | .swc.js:
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115 | - '@swc/register'
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116 | .swc.jsx:
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117 | - '@swc/register'
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118 | .swc.ts:
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119 | - '@swc/register'
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120 | .swc.tsx:
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121 | - '@swc/register'
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122 | .toml:
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123 | - toml-require
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124 | .ts:
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125 | - ts-node/register
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126 | - sucrase/register/ts
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127 | - '@babel/register'
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128 | - esbuild-register/dist/node
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129 | - '@swc/register'
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130 | .tsx:
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131 | - ts-node/register
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132 | - sucrase/register/tsx
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133 | - '@babel/register'
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134 | - esbuild-register/dist/node
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135 | - '@swc/register'
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136 | .yaml:
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137 | - yaml-hook/register
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138 | .yml:
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139 | - yaml-hook/register
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140 | ```
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141 |
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142 | ### `jsVariants`
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143 |
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144 | The `jsVariants` is the same mapping as above, but only include the extensions which are variants of JavaScript.
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145 |
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146 | **Supported extensions and their hooks**
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147 |
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148 | ```yaml file=scripts/jsVariants.yaml
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149 | .babel.js:
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150 | - '@babel/register'
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151 | .babel.jsx:
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152 | - '@babel/register'
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153 | .babel.ts:
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154 | - '@babel/register'
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155 | .babel.tsx:
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156 | - '@babel/register'
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157 | .cjs:
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158 | - interpret/cjs-stub
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159 | .coffee:
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160 | - coffeescript/register
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161 | .coffee.md:
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162 | - coffeescript/register
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163 | .esbuild.js:
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164 | - esbuild-register/dist/node
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165 | .esbuild.jsx:
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166 | - esbuild-register/dist/node
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167 | .esbuild.ts:
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168 | - esbuild-register/dist/node
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169 | .esbuild.tsx:
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170 | - esbuild-register/dist/node
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171 | .esm.js:
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172 | - esm
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173 | .js:
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174 | - built-in node.js loader
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175 | .jsx:
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176 | - '@babel/register'
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177 | - sucrase/register/jsx
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178 | .litcoffee:
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179 | - coffeescript/register
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180 | .mdx:
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181 | - '@mdx-js/register'
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182 | .mjs:
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183 | - interpret/mjs-stub
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184 | .sucrase.js:
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185 | - sucrase/dist/register
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186 | .sucrase.jsx:
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187 | - sucrase/dist/register
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188 | .sucrase.ts:
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189 | - sucrase/dist/register
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190 | .sucrase.tsx:
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191 | - sucrase/dist/register
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192 | .swc.js:
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193 | - '@swc/register'
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194 | .swc.jsx:
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195 | - '@swc/register'
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196 | .swc.ts:
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197 | - '@swc/register'
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198 | .swc.tsx:
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199 | - '@swc/register'
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200 | .ts:
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201 | - ts-node/register
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202 | - sucrase/register/ts
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203 | - '@babel/register'
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204 | - esbuild-register/dist/node
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205 | - '@swc/register'
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206 | .tsx:
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207 | - ts-node/register
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208 | - sucrase/register/tsx
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209 | - '@babel/register'
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210 | - esbuild-register/dist/node
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211 | - '@swc/register'
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212 | ```
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213 |
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214 | ## License
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215 |
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216 | MIT
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217 |
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218 |
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219 |
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220 | [downloads-image]: https://img.shields.io/npm/dm/interpret.svg?style=flat-square
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221 |
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222 | [npm-url]: https://www.npmjs.com/package/interpret
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223 |
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224 | [npm-image]: https://img.shields.io/npm/v/interpret.svg?style=flat-square
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225 |
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226 | [ci-url]: https://github.com/gulpjs/interpret/actions?query=workflow:dev
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227 |
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228 | [ci-image]: https://img.shields.io/github/workflow/status/gulpjs/interpret/dev?style=flat-square
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229 |
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230 | [coveralls-url]: https://coveralls.io/r/gulpjs/interpret
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231 |
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232 | [coveralls-image]: https://img.shields.io/coveralls/gulpjs/interpret/master.svg?style=flat-square
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233 |
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234 |
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235 |
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236 |
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237 |
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238 | [Liftoff]: http://github.com/gulpjs/liftoff
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239 |
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240 | [rechoir]: http://github.com/gulpjs/rechoir
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241 |
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242 | [require.extensions]: https://nodejs.org/api/modules.html#requireextensions
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243 |
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244 |
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