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390 lines
9.8 KiB
Markdown
390 lines
9.8 KiB
Markdown
# :rocket: fast-glob
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> Is a faster [`node-glob`](https://github.com/isaacs/node-glob) alternative.
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## :bulb: Highlights
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* :rocket: Fast by using Streams and Promises. Used [readdir-enhanced](https://github.com/BigstickCarpet/readdir-enhanced) and [micromatch](https://github.com/jonschlinkert/micromatch).
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* :beginner: User-friendly, since it supports multiple and negated patterns (`['*', '!*.md']`).
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* :vertical_traffic_light: Rational, because it doesn't read excluded directories (`!**/node_modules/**`).
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* :gear: Universal, because it supports Synchronous, Promise and Stream API.
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* :money_with_wings: Economy, because it provides `fs.Stats` for matched path if you wanted.
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## Donate
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If you want to thank me, or promote your Issue.
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[![Donate](https://img.shields.io/badge/Donate-PayPal-green.svg)](https://paypal.me/mrmlnc)
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> Sorry, but I have work and support for packages requires some time after work. I will be glad of your support and PR's.
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## Install
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```
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$ npm install --save fast-glob
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```
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## Usage
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#### Asynchronous
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```js
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const fg = require('fast-glob');
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fg(['src/**/*.js', '!src/**/*.spec.js']).then((entries) => console.log(entries));
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fg.async(['src/**/*.js', '!src/**/*.spec.js']).then((entries) => console.log(entries));
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```
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#### Synchronous
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```js
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const fg = require('fast-glob');
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const entries = fg.sync(['src/**/*.js', '!src/**/*.spec.js']);
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console.log(entries);
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```
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#### Stream
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```js
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const fg = require('fast-glob');
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const stream = fg.stream(['src/**/*.js', '!src/**/*.spec.js']);
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const entries = [];
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stream.on('data', (entry) => entries.push(entry));
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stream.once('error', console.log);
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stream.once('end', () => console.log(entries));
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```
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## API
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### fg(patterns, [options])
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### fg.async(patterns, [options])
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Returns a `Promise<Array>` of matching entries.
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#### patterns
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* Type: `string|string[]`
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This package does not respect the order of patterns. First, all the negative patterns are applied, and only then the positive patterns.
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#### options
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* Type: `Object`
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See [options](#options-1) section for more detailed information.
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### fg.sync(patterns, [options])
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Returns a `Array` of matching entries.
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### fg.stream(patterns, [options])
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Returns a [`ReadableStream`](https://nodejs.org/api/stream.html#stream_readable_streams).
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### fg.generateTasks(patterns, [options])
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Return a set of tasks based on provided patterns. All tasks satisfy the `Task` interface:
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```ts
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interface Task {
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/**
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* Parent directory for all patterns inside this task.
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*/
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base: string;
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/**
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* Dynamic or static patterns are in this task.
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*/
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dynamic: boolean;
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/**
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* All patterns.
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*/
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patterns: string[];
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/**
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* Only positive patterns.
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*/
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positive: string[];
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/**
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* Only negative patterns without ! symbol.
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*/
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negative: string[];
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}
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```
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## Options
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#### cwd
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* Type: `string`
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* Default: `process.cwd()`
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The current working directory in which to search.
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#### deep
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* Type: `number|boolean`
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* Default: `true`
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The deep option can be set to `true` to traverse the entire directory structure, or it can be set to a *number* to only traverse that many levels deep.
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For example, you have the following tree:
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```
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test
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└── one
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└── two
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└── index.js
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```
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> :book: If you specify a pattern with some base directory, this directory will not participate in the calculation of the depth of the found directories. Think of it as a `cwd` option.
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```js
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fg('test/**', { onlyFiles: false, deep: 0 });
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// -> ['test/one']
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fg('test/**', { onlyFiles: false, deep: 1 });
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// -> ['test/one', 'test/one/two']
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fg('**', { onlyFiles: false, cwd: 'test', deep: 0 });
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// -> ['one']
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fg('**', { onlyFiles: false, cwd: 'test', deep: 1 });
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// -> ['one', 'one/two']
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```
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#### ignore
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* Type: `string[]`
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* Default: `[]`
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An array of glob patterns to exclude matches.
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#### dot
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* Type: `boolean`
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* Default: `false`
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Allow patterns to match filenames starting with a period (files & directories), even if the pattern does not explicitly have a period in that spot.
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#### stats
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* Type: `number|boolean`
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* Default: `false`
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Return `fs.Stats` with `path` property instead of file path.
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#### onlyFiles
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* Type: `boolean`
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* Default: `true`
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Return only files.
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#### onlyDirectories
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* Type: `boolean`
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* Default: `false`
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Return only directories.
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#### followSymlinkedDirectories
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* Type: `boolean`
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* Default: `true`
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Follow symlinked directories when expanding `**` patterns.
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#### unique
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* Type: `boolean`
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* Default: `true`
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Prevent duplicate results.
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#### markDirectories
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* Type: `boolean`
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* Default: `false`
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Add a `/` character to directory entries.
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#### absolute
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* Type: `boolean`
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* Default: `false`
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Return absolute paths for matched entries.
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> :book: Note that you need to use this option if you want to use absolute negative patterns like `${__dirname}/*.md`.
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#### nobrace
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* Type: `boolean`
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* Default: `false`
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Disable expansion of brace patterns (`{a,b}`, `{1..3}`).
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#### brace
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* Type: `boolean`
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* Default: `true`
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The [`nobrace`](#nobrace) option without double-negation. This option has a higher priority then `nobrace`.
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#### noglobstar
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* Type: `boolean`
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* Default: `false`
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Disable matching with globstars (`**`).
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#### globstar
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* Type: `boolean`
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* Default: `true`
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The [`noglobstar`](#noglobstar) option without double-negation. This option has a higher priority then `noglobstar`.
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#### noext
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* Type: `boolean`
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* Default: `false`
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Disable extglob support (patterns like `+(a|b)`), so that extglobs are regarded as literal characters.
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#### extension
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* Type: `boolean`
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* Default: `true`
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The [`noext`](#noext) option without double-negation. This option has a higher priority then `noext`.
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#### nocase
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* Type: `boolean`
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* Default: `false`
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Disable a case-insensitive regex for matching files.
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#### case
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* Type: `boolean`
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* Default: `true`
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The [`nocase`](#nocase) option without double-negation. This option has a higher priority then `nocase`.
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#### matchBase
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* Type: `boolean`
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* Default: `false`
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Allow glob patterns without slashes to match a file path based on its basename. For example, `a?b` would match the path `/xyz/123/acb`, but not `/xyz/acb/123`.
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#### transform
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* Type: `Function`
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* Default: `null`
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Allows you to transform a path or `fs.Stats` object before sending to the array.
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```js
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const fg = require('fast-glob');
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const entries1 = fg.sync(['**/*.scss']);
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const entries2 = fg.sync(['**/*.scss'], { transform: (entry) => '_' + entry });
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console.log(entries1); // ['a.scss', 'b.scss']
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console.log(entries2); // ['_a.scss', '_b.scss']
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```
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If you are using **TypeScript**, you probably want to specify your own type of the returned array.
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```ts
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import * as fg from 'fast-glob';
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interface IMyOwnEntry {
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path: string;
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}
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const entries: IMyOwnEntry[] = fg.sync<IMyOwnEntry>(['*.md'], {
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transform: (entry) => typeof entry === 'string' ? { path: entry } : { path: entry.path }
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// Will throw compilation error for non-IMyOwnEntry types (boolean, for example)
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});
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```
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## How to exclude directory from reading?
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You can use a negative pattern like this: `!**/node_modules` or `!**/node_modules/**`. Also you can use `ignore` option. Just look at the example below.
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```
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first/
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├── file.md
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└── second
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└── file.txt
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```
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If you don't want to read the `second` directory, you must write the following pattern: `!**/second` or `!**/second/**`.
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```js
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fg.sync(['**/*.md', '!**/second']); // ['first/file.txt']
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fg.sync(['**/*.md'], { ignore: '**/second/**' }); // ['first/file.txt']
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```
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> :warning: When you write `!**/second/**/*` it means that the directory will be **read**, but all the entries will not be included in the results.
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You have to understand that if you write the pattern to exclude directories, then the directory will not be read under any circumstances.
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## Compatible with `node-glob`?
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Not fully, because `fast-glob` does not implement all options of `node-glob`. See table below.
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| node-glob | fast-glob |
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| :----------: | :-------: |
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| `cwd` | [`cwd`](#cwd) |
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| `root` | – |
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| `dot` | [`dot`](#dot) |
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| `nomount` | – |
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| `mark` | [`markDirectories`](#markdirectories) |
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| `nosort` | – |
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| `nounique` | [`unique`](#unique) |
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| `nobrace` | [`nobrace`](#nobrace) or [`brace`](#brace) |
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| `noglobstar` | [`noglobstar`](#noglobstar) or [`globstar`](#globstar) |
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| `noext` | [`noext`](#noext) or [`extension`](#extension) |
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| `nocase` | [`nocase`](#nocase) or [`case`](#case) |
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| `matchBase` | [`matchbase`](#matchbase) |
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| `nodir` | [`onlyFiles`](#onlyfiles) |
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| `ignore` | [`ignore`](#ignore) |
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| `follow` | [`followSymlinkedDirectories`](#followsymlinkeddirectories) |
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| `realpath` | – |
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| `absolute` | [`absolute`](#absolute) |
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## Benchmarks
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**Tech specs:**
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Server: [Vultr Bare Metal](https://www.vultr.com/pricing/baremetal)
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* Processor: E3-1270v6 (8 CPU)
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* RAM: 32GB
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* Disk: SSD
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You can see results [here](https://gist.github.com/mrmlnc/f06246b197f53c356895fa35355a367c) for latest release.
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## Related
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* [readdir-enhanced](https://github.com/BigstickCarpet/readdir-enhanced) – Fast functional replacement for `fs.readdir()`.
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* [globby](https://github.com/sindresorhus/globby) – User-friendly glob matching.
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* [node-glob](https://github.com/isaacs/node-glob) – «Standard» glob functionality for Node.js
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* [bash-glob](https://github.com/micromatch/bash-glob) – Bash-powered globbing for node.js.
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* [glob-stream](https://github.com/gulpjs/glob-stream) – A Readable Stream interface over node-glob that used in the [gulpjs](https://github.com/gulpjs/gulp).
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* [tiny-glob](https://github.com/terkelg/tiny-glob) – Tiny and extremely fast library to match files and folders using glob patterns.
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## Changelog
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See the [Releases section of our GitHub project](https://github.com/mrmlnc/fast-glob/releases) for changelogs for each release version.
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## License
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This software is released under the terms of the MIT license.
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