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Contributing to string-factory

The following is a set of guidelines for contributing to string-factory. These are mostly guidelines, not rules. Use your best judgment, and feel free to propose changes to this document in a pull request.

Code of Conduct

This project and everyone participating in it is governed by the Code of Conduct. By participating, you are expected to uphold this code. Please report unacceptable behavior to

How Can I Contribute?

How Do I Submit A Bug Report?

Bugs are tracked as GitHub issues. Create an issue, and provide the following information by filling in the questions in the issue template.

  • Use a clear and descriptive title for the issue to identify the problem.
  • Describe the exact steps which reproduce the problem in as many details as possible.
  • Provide specific examples to demonstrate the steps. Include links to files or GitHub projects, or copy/pasteable snippets, (or examples in StackBlitz or CodeSandbox), which you use in those examples. If you're providing snippets in the issue, use Markdown code blocks.
  • Describe the behavior you observed after following the steps and point out what exactly is the problem with that behavior.
  • Explain which behavior you expected to see instead and why.
  • Include screenshots and animated GIFs which show you following the described steps and clearly demonstrate the problem.

Suggesting Enhancements

When you are creating an enhancement suggestion, please include as many details as possible, including the steps that you imagine you would take if the feature you're requesting existed.

Pull Requests

The maintainers must be satisfied prior to having your pull request reviewed, and the reviewer(s) may ask you to complete additional design work, tests, or other changes before your pull request can be ultimately accepted.


Git Commit Messages

  • Use the present tense ("Add feature" not "Added feature")
  • Use the imperative mood ("Move cursor to..." not "Moves cursor to...")
  • Limit the first line to 72 characters or less

JavaScript Styleguide

All JavaScript code is linted with Prettier.

  • Prefer the object spread operator ({...anotherObj}) to Object.assign()
  • Inline exports with expressions whenever possible

Automating the development process

If you're writing new functions for the library, then you can use a the createNewFunctionFiles script to generate a new function file and test file. To run the script, run the following command, replacing myNewFunctionName with the actual name of the function you're creating:

yarn new myNewFunctionName

This will generate a new directory with a new function file and test file.


It will also generate an export statement in the src/index.js file, and create a new documentation entry in the docs/ file.

Testing your new function

When your function code and tests are written, run yarn test. This will lint your code, run the build script, then run your tests. If you have any errors, you can fix them and re-run the tests by once again running yarn test. Once all test are passing, submit your pull request.