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This is a playground to test code. It runs a full Node.js environment and already has all of npm’s 400,000 packages pre-installed, including purposefile with all npm packages installed. Try it out:

var purposefile = require("purposefile")

This service is provided by RunKit and is not affiliated with npm, Inc or the package authors.

purposefile v1.2.0

Make sure every file in your repo is exactly where it should be


Make sure every file in your repo is exactly where it should be.

Example of running purposefile CLI


First, make sure node and npm are installed.

Then if you have an existing package.json you can run:

npm install --save-dev purposefile
npx purposefile

Or if you want to use it globally you can also just run:

npx purposefile

It's recommended that you save this to your package.json#scripts

    "name": "my-package",
    "scripts": {
        "check-files": "purposefile"
npm run check-files


First create a .purposefile in the root of your project like this:

.purposefile                 Configures purposefile
.gitignore                   Configures git to ignore certain files
.prettierrc                  Configures Prettier
.prettierignore              Configures Prettier ignored files
package.json                 Configures npm and related tools
package-lock.json            Lock file for npm dependencies
tsconfig.json                Configures TypeScript                    Documentation for repo
LICENSE                      License for package
.git/**                      Internal git state & config
node_modules/**/*            Dependencies installed by npm
typings/*/*.d.ts             TypeScript library type definitions
src/**/*.ts                  Source files
!src/**/*.test.ts            Dont place test files within src/
test/**/*.test.ts            Test files
dist/**/*.{js,d.ts}{,.map}   Built source files
.github/*.png                Images for README

Note: Entries are matched in reverse order. Entries with no defined purpose or that start with a ! act like negations to the globs above them.

Then run:

npx purposefile

If all the files in the repo are known, you'll get:

Example output of purposefile when all files are known

Or if there's any unknown files:

Example output of purposefile when there are unknown files

If you want to check the purpose of a file you can run:

purposefile path/to/file

Example output of purposefile for a single file lookup

If you want to check the purpose of many files at once you can also specify globs:

purposefile '**' --ignore '**/node_modules/**'

Example output of purposefile for a glob

Note: You can specify multiple --ignore patterns to exclude files from being listed.

If you want to check purposefile before every commit, you can do so with Husky:

    "husky": {
        "hooks": {
            "pre-commit": "purposefile" // Or "purposefile && lint-staged" if you use `lint-staged`
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