A dictionary of file extensions and associated module loaders.
This is used by Liftoff to automatically require dependencies for configuration files, and by rechoir for registering module loaders.
Map file types to modules which provide a require.extensions loader.
{
'.cjsx': 'node-cjsx/register',
'.co': 'coco',
'.coffee': 'coffee-script/register',
'.coffee.md': 'coffee-script/register',
'.csv': 'require-csv',
'.iced': 'iced-coffee-script/register',
'.iced.md': 'iced-coffee-script/register',
'.ini': 'require-ini',
'.js': null,
'.json': null,
'.json5': 'json5/lib/require',
'.jsx': 'node-jsx',
'.litcoffee': 'coffee-script/register',
'.liticed': 'iced-coffee-script/register',
'.ls': 'livescript',
'.toml': 'toml-require',
'.ts': 'typescript-require',
'.xml': 'require-xml',
'.yaml': 'require-yaml',
'.yml': 'require-yaml'
}Check here to see if setup is needed for the module register itself with require.extensions. If a method is returned, call it with the module.
{
'toml-require': function (module) {
module.install();
}
}Extensions which are javascript variants.
{
'.cjsx': 'node-cjsx/register',
'.js': null,
'.co': 'coco',
'.coffee': 'coffee-script/register',
'.coffee.md': 'coffee-script/register',
'.iced': 'iced-coffee-script/register',
'.iced.md': 'iced-coffee-script/register',
'.jsx': 'node-jsx',
'.litcoffee': 'coffee-script/register',
'.liticed': 'iced-coffee-script/register',
'.ls': 'livescript',
'.ts': 'typescript-require'
}const interpret = require('interpret');
const path = require('path');
const resolve = require('resolve');
// register support for a defined extension
function register(filepath, cwd) {
// find the extension of the requested filename
var ext = path.extname(filepath);
// see if this extension is already supported
if (Object.keys(require.extensions).indexOf(ext) !== -1) {
return;
}
// if no cwd is specified, assume we want to use the
// directory the requested file exists in
if (!cwd) {
cwd = path.dirname(path.resolve(filepath));
}
// find out which module is needed to read this extension
var moduleName = interpret.extensions[ext];
// if a module exists for this extension, make it usable
if (moduleName) {
// find the module relative to cwd that can add support for this extension
var module = resolve.sync(moduleName, {basedir: cwd})
// require it
var compiler = require(module);
// see if there is a method needed beyond requiring to enable support
var register = interpret.register[moduleName];
// if there is, run it
if (register) {
register(compiler);
}
}
}Note: this is more or less exactly how rechoir works.