diff options
Diffstat (limited to 'chromium/third_party/node/node_modules/resolve/lib/sync.js')
| -rw-r--r-- | chromium/third_party/node/node_modules/resolve/lib/sync.js | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/chromium/third_party/node/node_modules/resolve/lib/sync.js b/chromium/third_party/node/node_modules/resolve/lib/sync.js new file mode 100644 index 00000000000..ef9bd803cee --- /dev/null +++ b/chromium/third_party/node/node_modules/resolve/lib/sync.js @@ -0,0 +1,199 @@ +var isCore = require('is-core-module'); +var fs = require('fs'); +var path = require('path'); +var caller = require('./caller'); +var nodeModulesPaths = require('./node-modules-paths'); +var normalizeOptions = require('./normalize-options'); + +var realpathFS = fs.realpathSync && typeof fs.realpathSync.native === 'function' ? fs.realpathSync.native : fs.realpathSync; + +var defaultIsFile = function isFile(file) { + try { + var stat = fs.statSync(file); + } catch (e) { + if (e && (e.code === 'ENOENT' || e.code === 'ENOTDIR')) return false; + throw e; + } + return stat.isFile() || stat.isFIFO(); +}; + +var defaultIsDir = function isDirectory(dir) { + try { + var stat = fs.statSync(dir); + } catch (e) { + if (e && (e.code === 'ENOENT' || e.code === 'ENOTDIR')) return false; + throw e; + } + return stat.isDirectory(); +}; + +var defaultRealpathSync = function realpathSync(x) { + try { + return realpathFS(x); + } catch (realpathErr) { + if (realpathErr.code !== 'ENOENT') { + throw realpathErr; + } + } + return x; +}; + +var maybeRealpathSync = function maybeRealpathSync(realpathSync, x, opts) { + if (opts && opts.preserveSymlinks === false) { + return realpathSync(x); + } + return x; +}; + +var defaultReadPackageSync = function defaultReadPackageSync(readFileSync, pkgfile) { + var body = readFileSync(pkgfile); + try { + var pkg = JSON.parse(body); + return pkg; + } catch (jsonErr) {} +}; + +var getPackageCandidates = function getPackageCandidates(x, start, opts) { + var dirs = nodeModulesPaths(start, opts, x); + for (var i = 0; i < dirs.length; i++) { + dirs[i] = path.join(dirs[i], x); + } + return dirs; +}; + +module.exports = function resolveSync(x, options) { + if (typeof x !== 'string') { + throw new TypeError('Path must be a string.'); + } + var opts = normalizeOptions(x, options); + + var isFile = opts.isFile || defaultIsFile; + var readFileSync = opts.readFileSync || fs.readFileSync; + var isDirectory = opts.isDirectory || defaultIsDir; + var realpathSync = opts.realpathSync || defaultRealpathSync; + var readPackageSync = opts.readPackageSync || defaultReadPackageSync; + if (opts.readFileSync && opts.readPackageSync) { + throw new TypeError('`readFileSync` and `readPackageSync` are mutually exclusive.'); + } + var packageIterator = opts.packageIterator; + + var extensions = opts.extensions || ['.js']; + var includeCoreModules = opts.includeCoreModules !== false; + var basedir = opts.basedir || path.dirname(caller()); + var parent = opts.filename || basedir; + + opts.paths = opts.paths || []; + + // ensure that `basedir` is an absolute path at this point, resolving against the process' current working directory + var absoluteStart = maybeRealpathSync(realpathSync, path.resolve(basedir), opts); + + if ((/^(?:\.\.?(?:\/|$)|\/|([A-Za-z]:)?[/\\])/).test(x)) { + var res = path.resolve(absoluteStart, x); + if (x === '.' || x === '..' || x.slice(-1) === '/') res += '/'; + var m = loadAsFileSync(res) || loadAsDirectorySync(res); + if (m) return maybeRealpathSync(realpathSync, m, opts); + } else if (includeCoreModules && isCore(x)) { + return x; + } else { + var n = loadNodeModulesSync(x, absoluteStart); + if (n) return maybeRealpathSync(realpathSync, n, opts); + } + + var err = new Error("Cannot find module '" + x + "' from '" + parent + "'"); + err.code = 'MODULE_NOT_FOUND'; + throw err; + + function loadAsFileSync(x) { + var pkg = loadpkg(path.dirname(x)); + + if (pkg && pkg.dir && pkg.pkg && opts.pathFilter) { + var rfile = path.relative(pkg.dir, x); + var r = opts.pathFilter(pkg.pkg, x, rfile); + if (r) { + x = path.resolve(pkg.dir, r); // eslint-disable-line no-param-reassign + } + } + + if (isFile(x)) { + return x; + } + + for (var i = 0; i < extensions.length; i++) { + var file = x + extensions[i]; + if (isFile(file)) { + return file; + } + } + } + + function loadpkg(dir) { + if (dir === '' || dir === '/') return; + if (process.platform === 'win32' && (/^\w:[/\\]*$/).test(dir)) { + return; + } + if ((/[/\\]node_modules[/\\]*$/).test(dir)) return; + + var pkgfile = path.join(maybeRealpathSync(realpathSync, dir, opts), 'package.json'); + + if (!isFile(pkgfile)) { + return loadpkg(path.dirname(dir)); + } + + var pkg = readPackageSync(readFileSync, pkgfile); + + if (pkg && opts.packageFilter) { + // v2 will pass pkgfile + pkg = opts.packageFilter(pkg, /*pkgfile,*/ dir); // eslint-disable-line spaced-comment + } + + return { pkg: pkg, dir: dir }; + } + + function loadAsDirectorySync(x) { + var pkgfile = path.join(maybeRealpathSync(realpathSync, x, opts), '/package.json'); + if (isFile(pkgfile)) { + try { + var pkg = readPackageSync(readFileSync, pkgfile); + } catch (e) {} + + if (pkg && opts.packageFilter) { + // v2 will pass pkgfile + pkg = opts.packageFilter(pkg, /*pkgfile,*/ x); // eslint-disable-line spaced-comment + } + + if (pkg && pkg.main) { + if (typeof pkg.main !== 'string') { + var mainError = new TypeError('package “' + pkg.name + '” `main` must be a string'); + mainError.code = 'INVALID_PACKAGE_MAIN'; + throw mainError; + } + if (pkg.main === '.' || pkg.main === './') { + pkg.main = 'index'; + } + try { + 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 (e) {} + } + } + + return loadAsFileSync(path.join(x, '/index')); + } + + function loadNodeModulesSync(x, start) { + var thunk = function () { return getPackageCandidates(x, start, opts); }; + var dirs = packageIterator ? packageIterator(x, start, thunk, opts) : thunk(); + + for (var i = 0; i < dirs.length; i++) { + var dir = dirs[i]; + if (isDirectory(path.dirname(dir))) { + var m = loadAsFileSync(dir); + if (m) return m; + var n = loadAsDirectorySync(dir); + if (n) return n; + } + } + } +}; |