82 lines
2.5 KiB
JavaScript
82 lines
2.5 KiB
JavaScript
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 }
|
|
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;
|
|
}
|
|
}
|
|
};
|