install-module-linked/dist/esm/lib/install.cjs

Installs and symlinks a module into node_modules

const path = require('path');
const spawn = require('cross-spawn-cb');
const { spawnOptions } = require('node-version-utils');
const isWindows = process.platform === 'win32' || /^(msys|cygwin)$/.test(process.env.OSTYPE);
const major = +process.versions.node.split('.')[0];
let execPath = null;
module.exports = function install(specifier, dest, callback) {
    if (major > 0) return spawn('npm', [
        'install',
        specifier
    ], {
        cwd: dest
    }, callback);
    if (!execPath) {
        const satisfiesSemverSync = require('node-exec-path').satisfiesSemverSync;
        execPath = satisfiesSemverSync('>0.12'); // must be more than node 0.12
        if (!execPath) return callback(new Error('install-module-linked a version of node >0.12 to use npm install'));
    }
    try {
        const installPath = isWindows ? path.join(execPath, '..') : path.join(execPath, '..', '..');
        const options = spawnOptions(installPath, {
            execPath,
            callbacks: true
        });
        const res = require('function-exec-sync')(options, __filename, specifier, dest);
        callback(null, res);
    } catch (err) {
        callback(err);
    }
};