File Path Filter

Filters file paths using globs, regular expressions, or custom criteria

File Path Filter

Filters file paths using globs, regular expressions, or custom criteria

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const filePathFilter = require("@jsdevtools/file-path-filter");

const paths = [

// Filter using a glob pattern

// Exclude glob patterns with "!"
paths.filter(filePathFilter("**/*.html", "!**/index.html"));

// Filter using a regular expression

// Filter using custom criteria
paths.filter(filePathFilter(path => path.length === 23));

// Use any combination of filters
  path => path.length === 23

// Explicitly specify include and exclude criteria
  include:  [
    path => path.length === 23
  exclude: "**/index.html",


You can install File Path Filter via npm.

npm install @jsdevtools/file-path-filter



createFilter(options, criteria)

The createFilter function is an alternative to the filePathFilter function that allows you to customize the behavior to suit your needs.

Filtering objects

The filePathFilter function creates a function that filters arrays of strings, but what if you need to filter an array of objects instead? That’s where the map option comes in handy. You can use it to map objects (or any other value) to file paths. Here’s an example:

const { createFilter } = require("@jsdevtools/file-path-filter");
const path = require("path");

const files = [
  { dir: "/my/website", filename: "index.html" },
  { dir: "/my/website", filename: "contact.html" },
  { dir: "/my/website/blog", filename: "post-1.html" },
  { dir: "/my/website/blog", filename: "post-2.html" },

// A function to returns the path of each file
function map(file) {
  return path.join(file.dir, file.filename);

// Filter the file objects - return all HTML files except the blog posts
files.filter(createFilter({ map }, "**/*.html", "!**/blog/*.html"));


Contributions, enhancements, and bug-fixes are welcome! Open an issue on GitHub and submit a pull request.


To build the project locally on your computer:

  1. Clone this repo
    git clone

  2. Install dependencies
    npm install

  3. Build the code
    npm run build

  4. Run the tests
    npm test


File Path Filter is 100% free and open-source, under the MIT license. Use it however you want.

This package is Treeware. If you use it in production, then we ask that you buy the world a tree to thank us for our work. By contributing to the Treeware forest you’ll be creating employment for local families and restoring wildlife habitats.

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