389 lines
12 KiB
Markdown
389 lines
12 KiB
Markdown
# globby
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> User-friendly glob matching
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Based on [`fast-glob`](https://github.com/mrmlnc/fast-glob) but adds a bunch of useful features.
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## Features
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- Promise API
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- Multiple patterns
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- Negated patterns: `['foo*', '!foobar']`
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- Negation-only patterns: `['!foobar']` → matches all files except `foobar`
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- Expands directories: `foo` → `foo/**/*`
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- Supports `.gitignore` and similar ignore config files
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- Supports `URL` as `cwd`
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## Install
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```sh
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npm install globby
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```
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## Usage
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```
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├── unicorn
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├── cake
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└── rainbow
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```
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```js
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import {globby} from 'globby';
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const paths = await globby(['*', '!cake']);
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console.log(paths);
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//=> ['unicorn', 'rainbow']
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```
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## API
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Note that glob patterns can only contain forward-slashes, not backward-slashes, so if you want to construct a glob pattern from path components, you need to use `path.posix.join()` instead of `path.join()`.
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**Windows:** Patterns with backslashes will silently fail. Use `path.posix.join()` or [`convertPathToPattern()`](#convertpathtopatternpath).
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### globby(patterns, options?)
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Returns a `Promise<string[]>` of matching paths.
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#### patterns
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Type: `string | string[]`
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See supported `minimatch` [patterns](https://github.com/isaacs/minimatch#usage).
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#### options
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Type: `object`
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See the [`fast-glob` options](https://github.com/mrmlnc/fast-glob#options-3) in addition to the ones below.
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##### expandDirectories
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Type: `boolean | string[] | object`\
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Default: `true`
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If set to `true`, `globby` will automatically glob directories for you. If you define an `Array` it will only glob files that matches the patterns inside the `Array`. You can also define an `object` with `files` and `extensions` like below:
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```js
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import {globby} from 'globby';
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const paths = await globby('images', {
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expandDirectories: {
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files: ['cat', 'unicorn', '*.jpg'],
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extensions: ['png']
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}
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});
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console.log(paths);
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//=> ['cat.png', 'unicorn.png', 'cow.jpg', 'rainbow.jpg']
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```
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Note that if you set this option to `false`, you won't get back matched directories unless you set `onlyFiles: false`.
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##### gitignore
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Type: `boolean`\
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Default: `false`
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Respect ignore patterns in `.gitignore` files that apply to the globbed files.
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When enabled, globby searches for `.gitignore` files from the current working directory downward, and if a Git repository is detected (by finding a `.git` directory), it also respects `.gitignore` files in parent directories up to the repository root. This matches Git's actual behavior where patterns from parent `.gitignore` files apply to subdirectories.
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Gitignore patterns take priority over user patterns, matching Git's behavior. To include gitignored files, set this to `false`.
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**Performance:** Globby reads `.gitignore` files before globbing. When there are no negation patterns (like `!important.log`) and no parent `.gitignore` files are found, it passes ignore patterns to fast-glob to skip traversing ignored directories entirely, which significantly improves performance for large `node_modules` or build directories. When negation patterns or parent `.gitignore` files are present, all filtering is done after traversal to ensure correct Git-compatible behavior. For optimal performance, prefer specific `.gitignore` patterns without negations, or use `ignoreFiles: '.gitignore'` to target only the root ignore file.
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##### ignoreFiles
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Type: `string | string[]`\
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Default: `undefined`
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Glob patterns to look for ignore files, which are then used to ignore globbed files.
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This is a more generic form of the `gitignore` option, allowing you to find ignore files with a [compatible syntax](http://git-scm.com/docs/gitignore). For instance, this works with Babel's `.babelignore`, Prettier's `.prettierignore`, or ESLint's `.eslintignore` files.
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**Performance tip:** Using a specific path like `'.gitignore'` is much faster than recursive patterns.
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##### expandNegationOnlyPatterns
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Type: `boolean`\
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Default: `true`
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When only negation patterns are provided (e.g., `['!*.json']`), automatically prepend a catch-all pattern (`**/*`) to match all files before applying negations.
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Set to `false` to return an empty array when only negation patterns are provided. This can be useful when patterns are user-controlled, to avoid unexpectedly matching all files.
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```js
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import {globby} from 'globby';
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// Default behavior: matches all files except .json
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await globby(['!*.json']);
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//=> ['file.txt', 'image.png', ...]
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// Disable expansion: returns empty array
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await globby(['!*.json'], {expandNegationOnlyPatterns: false});
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//=> []
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```
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##### fs
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Type: [`FileSystemAdapter`](https://github.com/mrmlnc/fast-glob#fs)\
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Default: `undefined`
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Custom file system implementation (useful for testing or virtual file systems).
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**Note:** When using `gitignore` or `ignoreFiles`, the custom fs must also provide `readFile`/`readFileSync` methods.
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### globbySync(patterns, options?)
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Returns `string[]` of matching paths.
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### globbyStream(patterns, options?)
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Returns a [`stream.Readable`](https://nodejs.org/api/stream.html#stream_readable_streams) of matching paths.
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For example, loop over glob matches in a [`for await...of` loop](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for-await...of) like this:
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```js
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import {globbyStream} from 'globby';
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for await (const path of globbyStream('*.tmp')) {
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console.log(path);
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}
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```
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### convertPathToPattern(path)
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Converts a path to a pattern by escaping special glob characters like `()`, `[]`, `{}`. On Windows, also converts backslashes to forward slashes.
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Use this when your literal paths contain characters with special meaning in globs.
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```js
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import {globby, convertPathToPattern} from 'globby';
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// ❌ Fails - parentheses are glob syntax
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await globby('C:/Program Files (x86)/*.txt');
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//=> []
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// ✅ Works
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const base = convertPathToPattern('C:/Program Files (x86)');
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await globby(`${base}/*.txt`);
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//=> ['C:/Program Files (x86)/file.txt']
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```
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[Learn more.](https://github.com/mrmlnc/fast-glob#convertpathtopatternpath)
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### generateGlobTasks(patterns, options?)
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Returns an `Promise<object[]>` in the format `{patterns: string[], options: Object}`, which can be passed as arguments to [`fast-glob`](https://github.com/mrmlnc/fast-glob). This is useful for other globbing-related packages.
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Note that you should avoid running the same tasks multiple times as they contain a file system cache. Instead, run this method each time to ensure file system changes are taken into consideration.
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### generateGlobTasksSync(patterns, options?)
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Returns an `object[]` in the format `{patterns: string[], options: Object}`, which can be passed as arguments to [`fast-glob`](https://github.com/mrmlnc/fast-glob). This is useful for other globbing-related packages.
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Takes the same arguments as `generateGlobTasks`.
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### isDynamicPattern(patterns, options?)
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Returns a `boolean` of whether there are any special glob characters in the `patterns`.
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Note that the options affect the results.
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This function is backed by [`fast-glob`](https://github.com/mrmlnc/fast-glob#isdynamicpatternpattern-options).
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### isGitIgnored(options?)
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Returns a `Promise<(path: URL | string) => boolean>` indicating whether a given path is ignored via a `.gitignore` file.
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#### options
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Type: `object`
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##### cwd
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Type: `URL | string`\
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Default: `process.cwd()`
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The current working directory in which to search.
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##### suppressErrors
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Type: `boolean`\
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Default: `false`
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Suppress errors when encountering directories or files without read permissions.
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##### deep
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Type: `number`\
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Default: `Infinity`
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Maximum depth to search for `.gitignore` files.
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- `0` - Only search in the start directory
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- `1` - Search in the start directory and one level of subdirectories
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- `2` - Search in the start directory and two levels of subdirectories
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##### ignore
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Type: `string | string[]`\
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Default: `[]`
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Glob patterns to exclude from `.gitignore` file search.
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##### followSymbolicLinks
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Type: `boolean`\
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Default: `true`
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Indicates whether to traverse descendants of symbolic link directories.
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##### concurrency
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Type: `number`\
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Default: `os.cpus().length`
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Specifies the maximum number of concurrent requests from a reader to read directories.
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##### throwErrorOnBrokenSymbolicLink
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Type: `boolean`\
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Default: `false`
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Throw an error when symbolic link is broken if `true` or safely return `lstat` call if `false`.
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##### fs
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Type: [`FileSystemAdapter`](https://github.com/mrmlnc/fast-glob#fs)\
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Default: `undefined`
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Custom file system implementation (useful for testing or virtual file systems).
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**Note:** The custom fs must provide `readFile`/`readFileSync` methods for reading `.gitignore` files.
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```js
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import {isGitIgnored} from 'globby';
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const isIgnored = await isGitIgnored();
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console.log(isIgnored('some/file'));
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```
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```js
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// Suppress errors when encountering unreadable directories
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const isIgnored = await isGitIgnored({suppressErrors: true});
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```
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```js
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// Limit search depth and exclude certain directories
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const isIgnored = await isGitIgnored({
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deep: 2,
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ignore: ['**/node_modules/**', '**/dist/**']
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});
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```
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### isGitIgnoredSync(options?)
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Returns a `(path: URL | string) => boolean` indicating whether a given path is ignored via a `.gitignore` file.
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See [`isGitIgnored`](#isgitignoredoptions) for options.
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### isIgnoredByIgnoreFiles(patterns, options?)
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Returns a `Promise<(path: URL | string) => boolean>` indicating whether a given path is ignored via the ignore files.
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This is a more generic form of the `isGitIgnored` function, allowing you to find ignore files with a [compatible syntax](http://git-scm.com/docs/gitignore). For instance, this works with Babel's `.babelignore`, Prettier's `.prettierignore`, or ESLint's `.eslintignore` files.
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#### patterns
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Type: `string | string[]`
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Glob patterns to look for ignore files.
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#### options
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Type: `object`
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See [`isGitIgnored` options](#isgitignoredoptions) for all available options.
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```js
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import {isIgnoredByIgnoreFiles} from 'globby';
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const isIgnored = await isIgnoredByIgnoreFiles("**/.gitignore");
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console.log(isIgnored('some/file'));
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```
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```js
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// Suppress errors when encountering unreadable directories
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const isIgnored = await isIgnoredByIgnoreFiles("**/.eslintignore", {suppressErrors: true});
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```
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```js
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// Limit search depth and concurrency
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const isIgnored = await isIgnoredByIgnoreFiles("**/.prettierignore", {
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deep: 3,
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concurrency: 4
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});
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```
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### isIgnoredByIgnoreFilesSync(patterns, options?)
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Returns a `(path: URL | string) => boolean` indicating whether a given path is ignored via the ignore files.
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This is a more generic form of the `isGitIgnoredSync` function, allowing you to find ignore files with a [compatible syntax](http://git-scm.com/docs/gitignore). For instance, this works with Babel's `.babelignore`, Prettier's `.prettierignore`, or ESLint's `.eslintignore` files.
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See [`isIgnoredByIgnoreFiles`](#isignoredbyignorefilespatterns-options) for patterns and options.
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```js
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import {isIgnoredByIgnoreFilesSync} from 'globby';
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const isIgnored = isIgnoredByIgnoreFilesSync("**/.gitignore");
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console.log(isIgnored('some/file'));
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```
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## Globbing patterns
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Just a quick overview.
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- `*` matches any number of characters, but not `/`
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- `?` matches a single character, but not `/`
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- `**` matches any number of characters, including `/`, as long as it's the only thing in a path part
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- `{}` allows for a comma-separated list of "or" expressions
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- `!` at the beginning of a pattern will negate the match
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### Negation patterns
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Globby supports negation patterns to exclude files. There are two ways to use them:
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**With positive patterns:**
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```js
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await globby(['src/**/*.js', '!src/**/*.test.js']);
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// Matches all .js files except test files
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```
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**Negation-only patterns:**
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```js
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await globby(['!*.json', '!*.xml'], {cwd: 'config'});
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// Matches all files in config/ except .json and .xml files
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```
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When using only negation patterns, globby implicitly prepends `**/*` to match all files, then applies the negations. This means `['!*.json', '!*.xml']` is equivalent to `['**/*', '!*.json', '!*.xml']`.
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**Note:** The prepended `**/*` pattern respects the `dot` option. By default, dotfiles (files starting with `.`) are not matched unless you set `dot: true`.
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[Various patterns and expected matches.](https://github.com/sindresorhus/multimatch/blob/main/test/test.js)
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## Related
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- [multimatch](https://github.com/sindresorhus/multimatch) - Match against a list instead of the filesystem
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- [matcher](https://github.com/sindresorhus/matcher) - Simple wildcard matching
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- [del](https://github.com/sindresorhus/del) - Delete files and directories
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- [make-dir](https://github.com/sindresorhus/make-dir) - Make a directory and its parents if needed
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