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diff --git a/chromium/third_party/node/node_modules/resolve/readme.markdown b/chromium/third_party/node/node_modules/resolve/readme.markdown new file mode 100644 index 00000000000..7c9f2dcd533 --- /dev/null +++ b/chromium/third_party/node/node_modules/resolve/readme.markdown @@ -0,0 +1,279 @@ +# resolve + +implements the [node `require.resolve()` +algorithm](https://nodejs.org/api/modules.html#modules_all_together) +such that you can `require.resolve()` on behalf of a file asynchronously and +synchronously + +[](http://travis-ci.org/browserify/resolve) + +# example + +asynchronously resolve: + +```js +var resolve = require('resolve'); +resolve('tap', { basedir: __dirname }, function (err, res) { + if (err) console.error(err); + else console.log(res); +}); +``` + +``` +$ node example/async.js +/home/substack/projects/node-resolve/node_modules/tap/lib/main.js +``` + +synchronously resolve: + +```js +var resolve = require('resolve'); +var res = resolve.sync('tap', { basedir: __dirname }); +console.log(res); +``` + +``` +$ node example/sync.js +/home/substack/projects/node-resolve/node_modules/tap/lib/main.js +``` + +# methods + +```js +var resolve = require('resolve'); +``` + +For both the synchronous and asynchronous methods, errors may have any of the following `err.code` values: + +- `MODULE_NOT_FOUND`: the given path string (`id`) could not be resolved to a module +- `INVALID_BASEDIR`: the specified `opts.basedir` doesn't exist, or is not a directory +- `INVALID_PACKAGE_MAIN`: a `package.json` was encountered with an invalid `main` property (eg. not a string) + +## resolve(id, opts={}, cb) + +Asynchronously resolve the module path string `id` into `cb(err, res [, pkg])`, where `pkg` (if defined) is the data from `package.json`. + +options are: + +* opts.basedir - directory to begin resolving from + +* opts.package - `package.json` data applicable to the module being loaded + +* opts.extensions - array of file extensions to search in order + +* opts.includeCoreModules - set to `false` to exclude node core modules (e.g. `fs`) from the search + +* opts.readFile - how to read files asynchronously + +* opts.isFile - function to asynchronously test whether a file exists + +* opts.isDirectory - function to asynchronously test whether a directory exists + +* opts.realpath - function to asynchronously resolve a potential symlink to its real path + +* `opts.readPackage(readFile, pkgfile, cb)` - function to asynchronously read and parse a package.json file + * readFile - the passed `opts.readFile` or `fs.readFile` if not specified + * pkgfile - path to package.json + * cb - callback + +* `opts.packageFilter(pkg, pkgfile, dir)` - transform the parsed package.json contents before looking at the "main" field + * pkg - package data + * pkgfile - path to package.json + * dir - directory for package.json + +* `opts.pathFilter(pkg, path, relativePath)` - transform a path within a package + * pkg - package data + * path - the path being resolved + * relativePath - the path relative from the package.json location + * returns - a relative path that will be joined from the package.json location + +* opts.paths - require.paths array to use if nothing is found on the normal `node_modules` recursive walk (probably don't use this) + + For advanced users, `paths` can also be a `opts.paths(request, start, opts)` function + * request - the import specifier being resolved + * start - lookup path + * getNodeModulesDirs - a thunk (no-argument function) that returns the paths using standard `node_modules` resolution + * opts - the resolution options + +* `opts.packageIterator(request, start, opts)` - return the list of candidate paths where the packages sources may be found (probably don't use this) + * request - the import specifier being resolved + * start - lookup path + * getPackageCandidates - a thunk (no-argument function) that returns the paths using standard `node_modules` resolution + * opts - the resolution options + +* opts.moduleDirectory - directory (or directories) in which to recursively look for modules. default: `"node_modules"` + +* opts.preserveSymlinks - if true, doesn't resolve `basedir` to real path before resolving. +This is the way Node resolves dependencies when executed with the [--preserve-symlinks](https://nodejs.org/api/all.html#cli_preserve_symlinks) flag. +**Note:** this property is currently `true` by default but it will be changed to +`false` in the next major version because *Node's resolution algorithm does not preserve symlinks by default*. + +default `opts` values: + +```js +{ + paths: [], + basedir: __dirname, + extensions: ['.js'], + includeCoreModules: true, + readFile: fs.readFile, + isFile: function isFile(file, cb) { + fs.stat(file, function (err, stat) { + if (!err) { + return cb(null, stat.isFile() || stat.isFIFO()); + } + if (err.code === 'ENOENT' || err.code === 'ENOTDIR') return cb(null, false); + return cb(err); + }); + }, + isDirectory: function isDirectory(dir, cb) { + fs.stat(dir, function (err, stat) { + if (!err) { + return cb(null, stat.isDirectory()); + } + if (err.code === 'ENOENT' || err.code === 'ENOTDIR') return cb(null, false); + return cb(err); + }); + }, + realpath: function realpath(file, cb) { + var realpath = typeof fs.realpath.native === 'function' ? fs.realpath.native : fs.realpath; + realpath(file, function (realPathErr, realPath) { + if (realPathErr && realPathErr.code !== 'ENOENT') cb(realPathErr); + else cb(null, realPathErr ? file : realPath); + }); + }, + readPackage: function defaultReadPackage(readFile, pkgfile, cb) { + readFile(pkgfile, function (readFileErr, body) { + if (readFileErr) cb(readFileErr); + else { + try { + var pkg = JSON.parse(body); + cb(null, pkg); + } catch (jsonErr) { + cb(null); + } + } + }); + }, + moduleDirectory: 'node_modules', + preserveSymlinks: true +} +``` + +## resolve.sync(id, opts) + +Synchronously resolve the module path string `id`, returning the result and +throwing an error when `id` can't be resolved. + +options are: + +* opts.basedir - directory to begin resolving from + +* opts.extensions - array of file extensions to search in order + +* opts.includeCoreModules - set to `false` to exclude node core modules (e.g. `fs`) from the search + +* opts.readFileSync - how to read files synchronously + +* opts.isFile - function to synchronously test whether a file exists + +* opts.isDirectory - function to synchronously test whether a directory exists + +* opts.realpathSync - function to synchronously resolve a potential symlink to its real path + +* `opts.readPackageSync(readFileSync, pkgfile)` - function to synchronously read and parse a package.json file + * readFileSync - the passed `opts.readFileSync` or `fs.readFileSync` if not specified + * pkgfile - path to package.json + +* `opts.packageFilter(pkg, dir)` - transform the parsed package.json contents before looking at the "main" field + * pkg - package data + * dir - directory for package.json (Note: the second argument will change to "pkgfile" in v2) + +* `opts.pathFilter(pkg, path, relativePath)` - transform a path within a package + * pkg - package data + * path - the path being resolved + * relativePath - the path relative from the package.json location + * returns - a relative path that will be joined from the package.json location + +* opts.paths - require.paths array to use if nothing is found on the normal `node_modules` recursive walk (probably don't use this) + + For advanced users, `paths` can also be a `opts.paths(request, start, opts)` function + * request - the import specifier being resolved + * start - lookup path + * getNodeModulesDirs - a thunk (no-argument function) that returns the paths using standard `node_modules` resolution + * opts - the resolution options + +* `opts.packageIterator(request, start, opts)` - return the list of candidate paths where the packages sources may be found (probably don't use this) + * request - the import specifier being resolved + * start - lookup path + * getPackageCandidates - a thunk (no-argument function) that returns the paths using standard `node_modules` resolution + * opts - the resolution options + +* opts.moduleDirectory - directory (or directories) in which to recursively look for modules. default: `"node_modules"` + +* opts.preserveSymlinks - if true, doesn't resolve `basedir` to real path before resolving. +This is the way Node resolves dependencies when executed with the [--preserve-symlinks](https://nodejs.org/api/all.html#cli_preserve_symlinks) flag. +**Note:** this property is currently `true` by default but it will be changed to +`false` in the next major version because *Node's resolution algorithm does not preserve symlinks by default*. + +default `opts` values: + +```js +{ + paths: [], + basedir: __dirname, + extensions: ['.js'], + includeCoreModules: true, + readFileSync: fs.readFileSync, + isFile: 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(); + }, + isDirectory: 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(); + }, + realpathSync: function realpathSync(file) { + try { + var realpath = typeof fs.realpathSync.native === 'function' ? fs.realpathSync.native : fs.realpathSync; + return realpath(file); + } catch (realPathErr) { + if (realPathErr.code !== 'ENOENT') { + throw realPathErr; + } + } + return file; + }, + readPackageSync: function defaultReadPackageSync(readFileSync, pkgfile) { + var body = readFileSync(pkgfile); + try { + var pkg = JSON.parse(body); + return pkg; + } catch (jsonErr) {} + }, + moduleDirectory: 'node_modules', + preserveSymlinks: true +} +``` + +# install + +With [npm](https://npmjs.org) do: + +```sh +npm install resolve +``` + +# license + +MIT |