Microsoft/TypeScript

Incorrect type returned by TextEncoder.encode

Open

#60,846 创建于 2024年12月23日

在 GitHub 查看
 (3 评论) (3 反应) (0 负责人)TypeScript (6,726 fork)batch import
BugDomain: lib.d.tsHelp Wanted

仓库指标

Star
 (48,455 star)
PR 合并指标
 (平均合并 6天 17小时) (30 天内合并 9 个 PR)

描述

🔎 Search Terms

TypedArray, Uint8Array, ArrayBufferLike, TextEncoder

🕗 Version & Regression Information

  • This is the behavior in every version I tried, and I reviewed the FAQ for entries about TextEncoder

⏯ Playground Link

Playground link

💻 Code

const data = new TextEncoder().encode("hello")
//    ^? Uint8Array<ArrayBufferLike>
// The `ArrayBufferLike` may include `SharedArrayBuffer`, but `encode()` 
// only supports `ArrayBuffer`, so this breaks code expecting an `ArrayBuffer`.

function processData(d: ArrayBuffer) {
  // do stuff
}

processData(data.buffer) // This should work, but reported as type error

🙁 Actual behavior

Values returned by TextEncoder.encode are not assignable to ArrayBuffer.

🙂 Expected behavior

Values returned by TextEncoder.encode should be assignable to ArrayBuffer.

Additional information about the issue

https://stackoverflow.com/a/79300250/1494725

贡献者指南