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

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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



  • criteria - The filter criteria. This can be any of the following:
- A boolean. true will match all files. false will not match any files. - A glob pattern). If the pattern starts with !, then it will be treated as an exclude pattern (see below) - A regular expression - A filter function that accepts a file path and returns true if the file should be matched - An array containing any combination of the above types - An object with include and exclude properties. Each of these properties can be any of the above types. File paths will be matched if they match any of the include criteria and do not match any of the exclude criteria.
  • return value - A filter function that matches file paths that meet the specified criteria

createFilter(options, criteria)

  • options - An object with some or all of the following properties:
- map - A function that maps filtered items to file paths - sep - A custom path separator, such as \ or /

  • return value - A filter function that matches file paths that meet the specified 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
  1. Install dependencies
npm install
  1. Build the code
npm run build
  1. Run the tests
npm test


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