depcheck.mjs

import depcheck from 'depcheck';
import path from "path";

const options = {
    withoutDev: false, // [DEPRECATED] check against devDependencies
    ignoreBinPackage: false, // ignore the packages with bin entry
    skipMissing: false, // skip calculation of missing dependencies
    ignoreDirs: [ // folder with these names will be ignored
        'dist'
    ],
    parsers: { // the target parsers
        '*.js': depcheck.parser.es6
    },
    detectors: [ // the target detectors
        depcheck.detector.requireCallExpression,
        depcheck.detector.importDeclaration
    ],
    specials: [ // the target special parsers
        depcheck.special.eslint
    ]
};

depcheck(path.join(path.resolve(), "./"),options, (unused) => {
    console.log(`Unused ${unused.dependencies}`); // an array containing the unused dependencies
    console.log(`Unused dev ${unused.devDependencies}`); // an array containing the unused devDependencies
});