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Convert to TypeScript

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#92 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
15/100
Issue type
Refactor
Clarity
Needs clarification
Activity status
Stale
Domain
frontend, web-dev

Research direction

Start with the TypeScript conversion checklist in phet-info/typescript-conversion/conversion-checklist.md and review the current normal-modes status: 3,533 JavaScript files versus 76 TypeScript files. Done would mean completing the sim’s JavaScript-to-TypeScript conversion, but the issue does not identify specific files or an incremental stopping point.

Written by the indexing model from the issue text.

Description

dev:typescript priority:5-deferred

This is a placeholder for a future conversion to TypeScript, as time and/or urgency permits. The current TypeScript conversion checklist is located here: https://github.com/phetsims/phet-info/blob/main/typescript-conversion/conversion-checklist.md

As of 8/12/25, the status of this sims' JS to TS is:

│ (index)                                  │ JS    │ TS    │ % Complete │ "@ts-expect-error" │
├──────────────────────────────────────────┼───────┼───────┼────────────┼────────────────────┤
│ normal-modes                             │ 3533  │ 76    │ 2          │ 0                  │
Dominant language
JavaScript
Stars
0
Forks
2
PR merge metrics
No merged PRs in 30d

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

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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