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86 lines
4.1 KiB
86 lines
4.1 KiB
3 years ago
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# Readdir-Glob
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 [](https://coveralls.io/github/Yqnn/node-readdir-glob?branch=master)
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Recursive version of fs.readdir wih stream API and glob filtering.
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Uses the `minimatch` library to do its matching.
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Requires Node.js 10.0 or later.
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## Performances
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Compared to `glob`, `readdir-glob` is memory efficient: no matter the file system size, or the number of returned files, the memory usage is constant.
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The CPU cost is proportional to the number of files in `root` folder, minus the number files in `options.skip` folders.
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**Advice**: For better performances use `options.skip` to restrict the search as much as possible.
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## Usage
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Install with npm
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```
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npm i readdir-glob
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```
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```javascript
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const readdirGlob = require('readdir-glob');
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const globber = readdirGlob('.', {pattern: '**/*.js'});
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globber.on('match', match => {
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// m.relative: relative path of the matched file
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// m.absolute: absolute path of the matched file
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// m.stat: stat of the matched file (only if stat:true option is used)
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});
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globber.on('error', err => {
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console.error('fatal error', err);
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});
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globber.on('end', (m) => {
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console.log('done');
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});
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```
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## readdirGlob(root, [options])
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* `root` `{String}` Path to be read recursively, *default*: `'.'`
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* `options` `{Object}` Options, *default*: `{}`
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Returns a EventEmitter reading given root recursively.
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### Properties
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* `options`: The options object passed in.
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* `paused`: Boolean which is set to true when calling `pause()`.
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* `aborted` Boolean which is set to true when calling `abort()`. There is no way at this time to continue a glob search after aborting.
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### Events
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* `match`: Every time a match is found, this is emitted with the specific thing that matched.
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* `end`: When the matching is finished, this is emitted with all the matches found.
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* `error`: Emitted when an unexpected error is encountered.
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### Methods
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* `pause()`: Temporarily stop the search
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* `resume()`: Resume the search
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* `abort()`: Stop the search forever
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### Options
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* `pattern`: Glob pattern or Array of Glob patterns to match the found files with. A file has to match at least one of the provided patterns to be returned.
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* `ignore`: Glob pattern or Array of Glob patterns to exclude matches. If a file or a folder matches at least one of the provided patterns, it's not returned. It doesn't prevent files from folder content to be returned. Note: `ignore` patterns are *always* in `dot:true` mode.
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* `skip`: Glob pattern or Array of Glob patterns to exclude folders. If a folder matches one of the provided patterns, it's not returned, and it's not explored: this prevents any of its children to be returned. Note: `skip` patterns are *always* in `dot:true` mode.
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* `mark`: Add a `/` character to directory matches.
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* `stat`: Set to true to stat *all* results. This reduces performance.
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* `silent`: When an unusual error is encountered when attempting to read a directory, a warning will be printed to stderr. Set the `silent` option to true to suppress these warnings.
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* `nodir`: Do not match directories, only files.
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* `follow`: Follow symlinked directories. Note that requires to stat *all* results, and so reduces performance.
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The following options apply only if `pattern` option is set, and are forwarded to `minimatch`:
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* `dot`: Allow `pattern` to match filenames starting with a period, even if the pattern does not explicitly have a period in that spot.
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* `noglobstar`: Disable `**` matching against multiple folder names.
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* `nocase`: Perform a case-insensitive match. Note: on case-insensitive filesystems, non-magic patterns will match by default, since `stat` and `readdir` will not raise errors.
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* `matchBase`: Perform a basename-only match if the pattern does not contain any slash characters. That is, `*.js` would be treated as equivalent to `**/*.js`, matching all js files in all directories.
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## References
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Unit-test set is based on [node-glob](https://www.npmjs.com/package/glob) tests.
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