node 16+, npm 8+ are recommended.
We target es2015
, and publish both ES-modules and CommonJS modules.
Install dependencies with npm ci
. npm install
will update the package-lock.json with the most recent compatible versions.
We value having as few runtime dependencies as possible. The addition of any dependencies requires careful consideration and review.
This repository uses NPM workspaces to establish a simple monorepo.
Within the root project, there is one common project (packages/shared
) which features common interfaces and code, consumed by the published modules (packages/server
and packages/client
). The shared module is bundled transparently into the published modules - it is not published itself. Changes in packages/shared
will result in releases of the dependant modules via Release Please.
Run tests with npm test
.
The continuous integration runs a set of gherkin integration tests using flagd
. These tests run with the "integration" npm script. If you'd like to run them locally, you can start the flagd testbed with
docker run -p 8013:8013 ghcr.io/open-feature/flagd-testbed:latest
and then run
npm run integration
Both ES modules and CommonJS modules are supported, so consumers can use both require
and import
functions to utilize this module. This is accomplished by building 2 variations of the output, under dist/esm
and dist/cjs
, respectively. To force resolution of the dist/esm/**.js*
files as modules, a package json with only the context {"type": "module"}
is included at a in a postbuild
step. Type declarations are included at /dist/types/
For testing purposes, you can add a comment containing "/publish" in any PR. This will publish an experimental SDK version with the git SHA appended to the version number.
All contributions to the OpenFeature project are welcome via GitHub pull requests.
To create a new PR, you will need to first fork the GitHub repository and clone upstream.
git clone https://github.com/open-feature/js-sdk.git openfeature-js-sdk
Navigate to the repository folder
cd openfeature-js-sdk
Add your fork as an origin
git remote add fork https://github.com/YOUR_GITHUB_USERNAME/js-sdk.git
Makes sure your development environment is all setup by building and testing
npm install
npm test
To start working on a new feature or bugfix, create a new branch and start working on it.
git checkout -b feat/NAME_OF_FEATURE
# Make your changes
git add --all
git commit --signoff
git push fork feat/NAME_OF_FEATURE
Open a pull request against the main js-sdk repository.
- If the PR is not ready for review, please mark it as
draft
. - Make sure all required CI checks are clear.
- Submit small, focused PRs addressing a single concern/issue.
- Make sure the PR title reflects the contribution.
- Write a summary that helps understand the change.
- Include usage examples in the summary, where applicable.
A PR is considered to be ready to merge when:
- Major feedback is resolved.
- Urgent fix can take exception as long as it has been actively communicated.
Any Maintainer can merge the PR once it is ready to merge. Note, that some PRs may not be merged immediately if the repo is in the process of a release and the maintainers decided to defer the PR to the next release train.
If a PR has been stuck (e.g. there are lots of debates and people couldn't agree on each other), the owner should try to get people aligned by:
- Consolidating the perspectives and putting a summary in the PR. It is recommended to add a link into the PR description, which points to a comment with a summary in the PR conversation.
- Tagging domain experts (by looking at the change history) in the PR asking for suggestion.
- Reaching out to more people on the CNCF OpenFeature Slack channel.
- Stepping back to see if it makes sense to narrow down the scope of the PR or split it up.
- If none of the above worked and the PR has been stuck for more than 2 weeks, the owner should bring it to the OpenFeatures meeting.
As with other OpenFeature SDKs, js-sdk follows the openfeature-specification.