yahooJavaScript Module Formats
Micro library to detect different types of JavaScript modules formats given some JavaScript source code.
Goals, Overview & Features
With the new ES Module syntax arrival, projects will commence the transition to write modules in ES format, and in some cases, rewrite/adjust modules to be ES module. As a result, complex applications might ended up having multiple module formats in their application, while the proper transpile process will be necessary. This micro library will help you to detect what type of module does a JavaScript file defines, and take the appropriate steps based on that information.
Installation
Install using npm:
$ npm install js-module-formats
Usage
By calling detect() with JavaScript source code, it returns one of the following values:
yuiModulesamdModulescjsCommonJS modules (including nodejs modules)esModulesundefinedif the detection fails
To detect the module format of a file called file.js:
var fs = require('fs'),
moduleFormats = require('js-module-formats').detect;
var source = fs.readFileSync(__dirname + '/file.js', 'utf8');
console.log(moduleFormats.detect(source));
Note: ES modules without import or export statements will not be detected.
License
This software is free to use under the Yahoo! Inc. BSD license. See the LICENSE file for license text and copyright information.