is-module

What is is-module?

The is-module npm package is a utility that helps determine if a given source string is an ES6 module. It is particularly useful for developers who need to differentiate between CommonJS and ES6 module formats in their codebases.

What are is-module's main functionalities?

Check if a string is an ES6 module

This feature allows you to check if a given string of source code is an ES6 module. In the example, the string 'export default 42' is identified as an ES6 module.

const isModule = require('is-module');
const sourceCode = 'export default 42';
console.log(isModule(sourceCode)); // true

Check if a string is not an ES6 module

This feature allows you to check if a given string of source code is not an ES6 module. In the example, the string 'module.exports = 42' is identified as not being an ES6 module.

const isModule = require('is-module');
const sourceCode = 'module.exports = 42';
console.log(isModule(sourceCode)); // false

Other packages similar to is-module

esm

The esm package is a comprehensive solution for using ES6 modules in Node.js. It not only detects ES6 modules but also allows you to load them seamlessly in a Node.js environment. It offers more features compared to is-module, such as module loading and compatibility layers.

README

Is Module

Check whether a source string looks like an ES6 module. This doesn't actually execute the code, and doesn't check other module types. So source strings without any module loaders returns false.

This is just what I need from https://github.com/yahoo/js-module-formats, which actually executes the sauce string in a subcontext.

API

var isES6Module = require('is-module');

console.log(isES6Module('import * from "emitter";')) // => true

License

(The MIT License)

Copyright (c) 2014 segmentio <[e-mail]>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.