install-module-linked/dist/esm/workers/async.js

Installs and symlinks a module into node_modules

import fs from 'fs';
import { Lock } from 'lock';
import mkdirp from 'mkdirp-classic';
import path from 'path';
import Queue from 'queue-cb';
import rimraf2 from 'rimraf2';
import { DEFAULT_CACHE_PATH } from '../constants.js';
import cache from '../lib/cache.js';
import parseInstallString from '../lib/parseInstallString.js';
const lock = Lock();
const isWindows = process.platform === 'win32' || /^(msys|cygwin)$/.test(process.env.OSTYPE);
const symlinkType = isWindows ? 'junction' : 'dir';
export default function installModule(installString, nodeModulesPath, options, callback) {
    lock([
        installString,
        nodeModulesPath
    ], (release)=>{
        callback = release(callback);
        const cachePath = options.cachePath || DEFAULT_CACHE_PATH;
        const { name } = parseInstallString(installString);
        const dest = path.join(nodeModulesPath, ...name.split('/'));
        fs.stat(dest, (err)=>{
            if (!err) return callback(null, dest); // already installed
            cache(installString, cachePath, (err, cachedAt)=>{
                if (err) {
                    console.log(`Could not install: ${installString}. Message: ${err.message}`);
                    return callback();
                }
                const queue = new Queue(1);
                queue.defer(mkdirp.bind(null, path.dirname(dest)));
                queue.defer(rimraf2.bind(null, dest, {
                    disableGlob: true
                }));
                queue.defer(fs.symlink.bind(null, cachedAt, dest, symlinkType));
                queue.defer(fs.stat.bind(null, dest));
                queue.await((err)=>{
                    err ? callback(err) : callback(null, dest);
                });
            });
        });
    });
}