Microsoft/TypeScript

CanvasRenderingContext2D has no reset() method

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#55,162 opened on Jul 26, 2023

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 (4 comments) (3 reactions) (0 assignees)TypeScript (6,726 forks)batch import
BugDomain: lib.d.tsHelp Wanted

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Description

Bug Report

According to MDN docs and HTML Standard a CanvasRenderingContext2D object should have the reset() method, but latest tsc (5.1.6) does not have it defined.

🔎 Search Terms

CanvasRenderingContext2D

🕗 Version & Regression Information

This is a crash

⏯ Playground Link

Playground link with relevant code

💻 Code

const canvas = document.createElement('canvas');
(() => {
  const context = canvas.getContext('2d');
  if (!context) return;

  context.reset();
})();

🙁 Actual behavior

PS C:\Users\Davin\Documents\GitHub\2dCanvasTypescriptResetBug> npx tsc
index.tsx:6:11 - error TS2339: Property 'reset' does not exist on type 'CanvasRenderingContext2D'.

6   context.reset();
            ~~~~~


Found 1 error in index.tsx:6

🙂 Expected behavior

Found 0 errors

Contributor guide

Research direction
Locate the CanvasRenderingContext2D type definition in the lib files (e.g., lib.dom.d.ts) and add the reset() method with appropriate signature according to the HTML spec.
Tech stack
typescript
Domain
frontend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
TypeScriptGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80