Aegir: JavaScript DevOps Automation Mastery


JavaScript project management


$ npm i aegir

Browser <script> tag

Loading this module through a script tag will make it's exports available as Aegir in the global namespace.

<script src=""></script>

Project Structure

The project structure when using this is quite strict, to ease replication and configuration overhead.

All source code should be placed under src, with the main entry point being src/index.js or src/index.ts.

All test files should be placed under test. Individual test files should end in .spec.js or .spec.ts and will be ran in all environments (node, browser, webworker, electron-main and electron-renderer). To run node specific tests a file named test/node.js or test/node.ts should be used to require all node test files and the same thing for the other environments with a file named test/browser.js or test/browser.ts.

Your package.json should have the following entries and should pass aegir lint-package-json.

"main": "src/index.js",
"files": [
"scripts": {
  "lint": "aegir lint",
  "release": "aegir release",
  "build": "aegir build",
  "test": "aegir test",
  "test:node": "aegir test --target node",
  "test:browser": "aegir test --target browser"


Run aegir --help

Usage: aegir <command> [options]

  aegir completion                   generate completion script
  aegir build                        Builds a browser bundle and TS type declara
                                     tions from the `src` folder.
  aegir check-project                Ensure your project has the correct config.
  aegir check                        Check project
  aegir clean [files..]              Remove created build artifacts.
  aegir dependency-check [input...]  Run `dependency-check` cli with aegir defau
                                     lts.              [aliases: dep-check, dep]
  aegir docs                         Generate documentation from TS type declara
  aegir document-check [input...]    Run `document-check` cli with aegir default
                                     s.                     [aliases: doc-check]
  aegir lint-package-json            Lint package.json with aegir defaults.
                                                    [aliases: lint-package, lpj]
  aegir lint                         Lint all project files
  aegir release                      Release using semantic-release
  aegir release-rc                   Release an RC version of the current module
                                      or monorepo
  aegir test-dependant [repo]        Run the tests of an module that depends on
                                     this module to see if the current changes h
                                     ave caused a regression
  aegir test                         Test your code in different environments
  aegir exec <command>               Run a command in each project of a monorepo
  aegir run <scripts..>              Run one or more npm scripts in each project
                                      of a monorepo

Global Options:
  -h, --help     Show help                                             [boolean]
  -v, --version  Show version number                                   [boolean]
  -d, --debug    Show debug output.                   [boolean] [default: false]

  aegir build                               Runs the build command to bundle JS
                                            code for the browser.
  npx aegir build                           Can be used with `npx` to use a loca
                                            l version
  aegir test -t webworker -- --browser fir  If the command supports `--` can be
  efox                                      used to forward options to the under
                                            lying tool.
  npm test -- -- --browser firefox          If `npm test` translates to `aegir t
                                            est -t browser` and you want to forw
                                            ard options you need to use `-- --`

Use `aegir <command> --help` to learn more about each command.


Aegir can be fully configured using a config file named .aegir.js or the package.json using the property aegir.

// file: .aegir.js

/** @type {import('aegir').PartialOptions} */
module.exports = {
  tsRepo: true,
  release: {
    build: false
// file: package.json
"main": "src/index.js",
"files": [
"scripts": {
  "lint": "aegir lint",
  "release": "aegir release",
  "build": "aegir build",
  "test": "aegir test",
  "test:node": "aegir test --target node",
  "test:browser": "aegir test --target browser"
"aegir" : {
  "tsRepo": false

You can find the complete default config here and the types here.

Continuous Integration

Check this template for Github Actions

Testing helpers

In addition to running the tests aegir also provides several helpers to be used by the tests.

Check the documentation


Aegir will detect the presence of tsconfig.json files and build typescript as appropriate.

Release steps

  1. Run linting
  2. Run type check
  3. Run tests
  4. Bump the version in package.json
  5. Build everything
  6. Update contributors based on the git history
  7. Generate a changelog based on the git log
  8. Commit the version change &
  9. Create a git tag
  10. Run git push to origin/master
  11. Publish a release to Github releases
  12. Generate documentation and push to Github Pages
  13. Publish to npm
aegir release --help

API Docs


Contributions welcome! Please check out the issues.

Also see our contributing document for more information on how we work, and about contributing in general.

Please be aware that all interactions related to this repo are subject to the IPFS Code of Conduct.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

Download Details:

Author: ipfs
Source Code: 
License: Unknown and 2 other licenses found

#javascript #testing #typescript 

Aegir: JavaScript DevOps Automation Mastery
1.90 GEEK