import axios from 'axios'; import { safeGet } from './index'; const regex = /import\s([\s\S]*?)\sfrom\s(?:('[@\.\/\-\w]+')|("[@\.\/\-\w]+"))/mg; const extractPkgs = (code: string, excludePkgs?: string[]): string[] => { let matchRet = null; const pkgNames: string[] = []; while ((matchRet = regex.exec(code)) != null) { let pkgName = (matchRet[2] || matchRet[3]); pkgName = pkgName.slice(1, pkgName.length - 1); // NOTE: ignore relative path (./ and ../) and excludePkgs if ( pkgName.indexOf('./') === -1 && pkgName.indexOf('../') === -1 && excludePkgs?.indexOf(pkgName) === -1 ) { pkgNames.push(pkgName); } } return pkgNames; }; const getPkgLatestVersion = (pkg: string): Promise => { return axios.get(`https://registry.npm.taobao.org/${pkg}`) .then(res => { return [pkg, safeGet(res, 'data.dist-tags.latest', '*')]; }).catch(err => { console.log(`get package ${pkg} info failed, the error is:`, err); return [pkg, '*']; }); }; const analyzeDeps = (code: string, excludePkgs?: string[]): Promise<{ [pkgName: string]: string }> => { const pkgs = extractPkgs(code, excludePkgs); return Promise .all(pkgs.map(pkg => getPkgLatestVersion(pkg))) .then(pkgResults => { const map: any = {}; pkgResults.forEach(([pkg, version]) => { map[pkg] = version; }); return map; }).catch(err => { console.log('analyze deps failed, the error is:', err); }); }; export default analyzeDeps;