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110 lines
2.8 KiB
110 lines
2.8 KiB
3 years ago
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# totalist [](https://github.com/lukeed/totalist/actions) [](https://codecov.io/gh/lukeed/totalist)
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> A tiny (195B to 224B) utility to recursively list all (total) files in a directory
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Traverse a directory recursively, running a function for **every file** found.
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With this module, you easily apply custom logic to decide which file(s) to process without worrying about accidentally accessing a directory or making repeat `fs.Stats` requests.
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## Install
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```
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$ npm install --save totalist
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```
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## Modes
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There are two "versions" of `totalist` available:
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#### "async"
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> **Node.js:** >= 8.x<br>
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> **Size (gzip):** 224 bytes<br>
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> **Availability:** [CommonJS](https://unpkg.com/totalist/dist/index.js), [ES Module](https://unpkg.com/totalist/dist/index.mjs)
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This is the primary/default mode. It makes use of `async`/`await` and [`util.promisify`](https://nodejs.org/api/util.html#util_util_promisify_original).
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#### "sync"
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> **Node.js:** >= 6.x<br>
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> **Size (gzip):** 195 bytes<br>
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> **Availability:** [CommonJS](https://unpkg.com/totalist/sync/index.js), [ES Module](https://unpkg.com/totalist/sync/index.mjs)
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This is the opt-in mode, ideal for scenarios where `async` usage cannot be supported.
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## Usage
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***Selecting a Mode***
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```js
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// import via npm module
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import totalist from 'totalist';
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import totalist from 'totalist/sync';
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```
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***Example Usage***
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```js
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import totalist from 'totalist/sync';
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const styles = new Set();
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const scripts = new Set();
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totalist('src', (name, abs, stats) => {
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if (/\.js$/.test(name)) {
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scripts.add(abs);
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if (stats.size >= 100e3) {
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console.warn(`[WARN] "${name}" might cause performance issues (${stats.size})`);
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}
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} else if (/\.css$/.test(name)) {
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styles.add(abs);
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}
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});
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console.log([...scripts]);
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//=> [..., '/Users/lukeed/.../src/path/to/example.css', ...]
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```
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## API
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### totalist(dir, callback)
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Returns: `void`
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> **Important:** The "async" usage must be `await`ed or included within a Promise chain.
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#### dir
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Type: `string`<br>
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Required: `true`
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The directory to traverse.
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This may be a relative _or_ an absolute path.
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> **Note**: Node.js will assume a relative path is meant to be resolved from the current location (`process.cwd()`).
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#### callback
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Type: `Function`<br>
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Required: `true`
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The callback function to run for _every_ file.
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The function receives three parameters:
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##### relPath
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Type: `String`<br>
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The path _relative to_ the initial `dir` value you provided.
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##### absPath
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Type: `String`<br>
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The absolute path of the file.
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##### stats
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Type: `fs.Stats`<br>
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The [`fs.Stats`](https://nodejs.org/api/fs.html#fs_class_fs_stats) object for the file.
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## License
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MIT © [Luke Edwards](https://lukeed.com)
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