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interpret
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interpret

CHANGELOG
LICENSE
README.md
index.js
mjs-stub.js
package.json

README.md

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interpret

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A dictionary of file extensions and associated module loaders.

What is it

This is used by Liftoff to automatically require dependencies for configuration files, and by rechoir for registering module loaders.

interpret for enterprise

Available as part of the Tidelift Subscription

The maintainers of interpret and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. Learn more.

API

extensions

Map file types to modules which provide a [require.extensions] loader.

js
{
  '.babel.js': [
    {
      module: '@babel/register',
      register: function(hook) {
        hook({
          extensions: '.js',
          rootMode: 'upward-optional',
          ignore: [ignoreNonBabelAndNodeModules],
        });
      },
    },
    {
      module: 'babel-register',
      register: function(hook) {
        hook({
          extensions: '.js',
          ignore: ignoreNonBabelAndNodeModules,
        });
      },
    },
    {
      module: 'babel-core/register',
      register: function(hook) {
        hook({
          extensions: '.js',
          ignore: ignoreNonBabelAndNodeModules,
        });
      },
    },
    {
      module: 'babel/register',
      register: function(hook) {
        hook({
          extensions: '.js',
          ignore: ignoreNonBabelAndNodeModules,
        });
      },
    },
  ],
  '.babel.ts': [
    {
      module: '@babel/register',
      register: function(hook) {
        hook({
          extensions: '.ts',
          rootMode: 'upward-optional',
          ignore: [ignoreNonBabelAndNodeModules],
        });
      },
    },
  ],
  '.buble.js': 'buble/register',
  '.cirru': 'cirru-script/lib/register',
  '.cjsx': 'node-cjsx/register',
  '.co': 'coco',
  '.coffee': ['coffeescript/register', 'coffee-script/register', 'coffeescript', 'coffee-script'],
  '.coffee.md': ['coffeescript/register', 'coffee-script/register', 'coffeescript', 'coffee-script'],
  '.csv': 'require-csv',
  '.eg': 'earlgrey/register',
  '.esm.js': {
    module: 'esm',
    register: function(hook) {
      // register on .js extension due to https://github.com/joyent/node/blob/v0.12.0/lib/module.js#L353
      // which only captures the final extension (.babel.js -> .js)
      var esmLoader = hook(module);
      require.extensions['.js'] = esmLoader('module')._extensions['.js'];
    },
  },
  '.iced': ['iced-coffee-script/register', 'iced-coffee-script'],
  '.iced.md': 'iced-coffee-script/register',
  '.ini': 'require-ini',
  '.js': null,
  '.json': null,
  '.json5': ['json5/lib/register', 'json5/lib/require'],
  '.jsx': [
    {
      module: '@babel/register',
      register: function(hook) {
        hook({
          extensions: '.jsx',
          rootMode: 'upward-optional',
          ignore: [ignoreNonBabelAndNodeModules],
        });
      },
    },
    {
      module: 'babel-register',
      register: function(hook) {
        hook({
          extensions: '.jsx',
          ignore: ignoreNonBabelAndNodeModules,
        });
      },
    },
    {
      module: 'babel-core/register',
      register: function(hook) {
        hook({
          extensions: '.jsx',
          ignore: ignoreNonBabelAndNodeModules,
        });
      },
    },
    {
      module: 'babel/register',
      register: function(hook) {
        hook({
          extensions: '.jsx',
          ignore: ignoreNonBabelAndNodeModules,
        });
      },
    },
    {
      module: 'node-jsx',
      register: function(hook) {
        hook.install({ extension: '.jsx', harmony: true });
      },
    },
  ],
  '.litcoffee': ['coffeescript/register', 'coffee-script/register', 'coffeescript', 'coffee-script'],
  '.liticed': 'iced-coffee-script/register',
  '.ls': ['livescript', 'LiveScript'],
  '.mjs': '/absolute/path/to/interpret/mjs-stub.js',
  '.node': null,
  '.toml': {
    module: 'toml-require',
    register: function(hook) {
      hook.install();
    },
  },
  '.ts': [
    'ts-node/register',
    'typescript-node/register',
    'typescript-register',
    'typescript-require',
    'sucrase/register/ts',
    {
      module: '@babel/register',
      register: function(hook) {
        hook({
          extensions: '.ts',
          rootMode: 'upward-optional',
          ignore: [ignoreNonBabelAndNodeModules],
        });
      },
    },
  ],
  '.tsx': [
    'ts-node/register',
    'typescript-node/register',
    'sucrase/register',
    {
      module: '@babel/register',
      register: function(hook) {
        hook({
          extensions: '.tsx',
          rootMode: 'upward-optional',
          ignore: [ignoreNonBabelAndNodeModules],
        });
      },
    },
  ],
  '.wisp': 'wisp/engine/node',
  '.xml': 'require-xml',
  '.yaml': 'require-yaml',
  '.yml': 'require-yaml',
}

jsVariants

Same as above, but only include the extensions which are javascript variants.

How to use it

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:

If the value is null, do nothing.

If the value is a string, try to require it.

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.