var core = require('./core'); var fs = require('fs'); var path = require('path'); var caller = require('./caller.js'); var nodeModulesPaths = require('./node-modules-paths.js'); module.exports = function (x, opts) { if (!opts) opts = {}; var isFile = opts.isFile || function (file) { try { var stat = fs.statSync(file) } catch (err) { if (err && err.code === 'ENOENT') return false; throw err; } return stat.isFile() || stat.isFIFO(); }; var readFileSync = opts.readFileSync || fs.readFileSync; var extensions = opts.extensions || [ '.js' ]; var y = opts.basedir || path.dirname(caller()); opts.paths = opts.paths || []; if (/^(?:\.\.?(?:\/|$)|\/|([A-Za-z]:)?[\\\/])/.test(x)) { var res = path.resolve(y, x); if (x === '..') res += '/'; var m = loadAsFileSync(res) || loadAsDirectorySync(res); if (m) return m; } else { var n = loadNodeModulesSync(x, y); if (n) return n; } if (core[x]) return x; throw new Error("Cannot find module '" + x + "' from '" + y + "'"); function loadAsFileSync (x) { if (isFile(x)) { return x; } for (var i = 0; i < extensions.length; i++) { var file = x + extensions[i]; if (isFile(file)) { return file; } } } function loadAsDirectorySync (x) { var pkgfile = path.join(x, '/package.json'); if (isFile(pkgfile)) { var body = readFileSync(pkgfile, 'utf8'); try { var pkg = JSON.parse(body); if (opts.packageFilter) { pkg = opts.packageFilter(pkg, x); } if (pkg.main) { var m = loadAsFileSync(path.resolve(x, pkg.main)); if (m) return m; var n = loadAsDirectorySync(path.resolve(x, pkg.main)); if (n) return n; } } catch (err) {} } return loadAsFileSync(path.join( x, '/index')); } function loadNodeModulesSync (x, start) { var dirs = nodeModulesPaths(start, opts); for (var i = 0; i < dirs.length; i++) { var dir = dirs[i]; var m = loadAsFileSync(path.join( dir, '/', x)); if (m) return m; var n = loadAsDirectorySync(path.join( dir, '/', x )); if (n) return n; } } };