Module to fetch all required and imported modules in Javascript and NodeJS. The module has JS functions to check all imports or required modules and check if the file is a ES Module or a CJS/ JS Module or Script
Find the demos in the demos folder
npm install check-esm --save
ESM Module
import { _isESCode } from "check-esm";
CommonJS Script/ Module
const checkEsm = require("check-esm");`
isESCode("./path/to/file.mjs")
[Simple Medium blog for usage] (https://medium.com/@ganeshsurfs/exploring-node-js-and-js-checking-is-a-package-is-a-commonjs-script-module-or-a-esm-module-2847c456d93f)
There are other script APIs you may wish to explore that includes the following:
Check if a module can be imported using import()
Usage:
.checkModuleImports(absPath)
Check require.cache list in code - used in your code's process global context.
Usage:
.requiresObject()
Check to see if there are require() syntax in code.
Usage:
.requireRegex(absPath, basePath = "", useProcessCwd = false)
.requireRegex(absPath)
Check to see if there are import() syntax in code.
Usage:
.importRegex(absPath, basePath = "", useProcessCwd = false)
.importRegex(absPath)
Check to see if there are import x from "" syntax in code.
Usage:
.importESRegex(absPath, basePath = "", useProcessCwd = false)
.importESRegex(absPath)
Check to see if there are import() syntax in code.
Usage:
.importRegexExtended(absPath, basePath = "", useProcessCwd = false)
.importRegexExtended(absPath)
Check to see if the file has .mjs/ .cjs/ .js extension.
Usage:
.isESMFileExtension(absPath)
Check to see if the file has .mjs/ .cjs/ .js / .node / .wasm extension.
Usage:
.isNodeCompatibleFileExtension(absPath)
Check to see if the code is ESM Module.
Usage:
.isESMCodeBase(absPath)
Check to see if the code is CommonJS Script or Module.
Usage:
isCJSCodeBase(absPath)
Checks type key's value in package.json.
Usage:
getPackageJsonRoot(startdirectory, options)
Multiple checks to check if the code is ESM Module (other than package.json type key's value check in package.json).
Usage:
isModuleInPackageJson(absPath, packagejsonPath, returns)
Contributions, Feature Improvements, Bugs, and Issues are invited. raising an issue