Immutable scales.
Nobody has claimed this yet.
Assessment
- Difficulty
- 5/5
- Estimated time
- Over a week
- Newbie friendliness
- 15/100
- Issue type
- Feature
- Clarity
- Mostly clear
- Activity status
- Stale
- Tech stack
- javascript
- Domain
- data-visualization
Research direction
Start by reading the scale mutation APIs and their use in d3-axis, then inspect how ordinal scales infer domains when used. The issue proposes making scale methods return new scales and requiring explicit ordinal domains; done means those changes work together and scale behavior remains deterministic, but the issue names no files or tests to begin from.
Written by the indexing model from the issue text.
Description
What if scales were immutable, and all methods that currently mutate scales instead returned new scales? It would eliminate the need for scale.copy, simplify the logic in d3-axis, and generally make scales easier to understand.
It would require a change to the implicit domain behavior of ordinal scales: these scales mutate on use! It’s not too onerous to require you to initialize the scale’s domain, however, and that is already a strongly recommended pattern for deterministic behavior and generating keys.
- Dominant language
- JavaScript
- Stars
- 1.6k
- Forks
- 288
- Avg merge
- 6h 41m
- Merged PRs (30d)
- 1
Getting set up
This project ships no dev container, Dockerfile or contributing guide, so setting up is up to you: start from its README, and see our first-contribution guide for the general steps.
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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