Use more precise type: Canvas.createPattern

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
45/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Stale
Tech stack
typescript
Domain
frontend

Research direction

Start with the generated signature in baselines/dom.generated.d.ts at the referenced Canvas.createPattern entry. Compare the current repetition type with the expected literal union and verify that the generated DOM declaration reflects the precise type when the change is complete.

Written by the indexing model from the issue text.

Description

createPattern arg repetition type is widened to string

however According to MDN should be "repeat" | "repeat-x" | "repeat-y" | "no-repeat"

location in repo
https://github.com/microsoft/TypeScript-DOM-lib-generator/blob/main/baselines/dom.generated.d.ts#L5747

current signature

createPattern(image: CanvasImageSource, repetition: string | null): CanvasPattern | null;

expected signature

type PatternRepeatMode = "repeat" | "repeat-x" | "repeat-y" | "no-repeat"

createPattern(image: CanvasImageSource, repetition: PatternRepeatMode | null): CanvasPattern | null;
Dominant language
TypeScript
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Forks
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Avg merge
2d 8h
Merged PRs (30d)
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