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CRITICAL: TypeScript `ES3` Target in Playground Broken

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#3,571 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
58/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Quiet
Tech stack
typescript
Domain
tooling, web-dev

Research direction

Start at the TypeScript Playground URL and reproduce the failure by selecting the ES3 compilation target. Inspect the Playground's target-selection and output-panel behavior, then verify that ES3 code is emitted and downlevelled correctly without breaking other targets.

Written by the indexing model from the issue text.

Description

Page URL:
https://www.typescriptlang.org/play

Issue:
When setting the compilation target to ES3 in the TypeScript Playground, the output panel fails to emit or downlevel code correctly.

Repro Screenshot
Image
Dominant language
TypeScript
Stars
2.6k
Forks
1.5k
Avg merge
1d 12h
Merged PRs (30d)
5

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  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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