Blob constructor is not spec compliant
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描述
Description
The constructor for React Native's Blob has a comment:
"Currently we only support creating Blobs from other Blobs."
BlobManager confirms this:
"Creating blobs from 'ArrayBuffer' and 'ArrayBufferView' are not supported"
This API is not spec compliant, since this is what the Blob specification specifies:
(Constructed from) "An iterable object such as an Array, having ArrayBuffers, TypedArrays, DataViews, Blobs, strings, or a mix of any of such elements, that will be put inside the Blob. Strings should be well-formed Unicode, and lone surrogates are sanitized using the same algorithm as String.prototype.toWellFormed()."
Steps to reproduce
- Try to call:
new Blob(new Uint8Array([
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
21, 22, 23,
]);
See that RN doesn't support Blobs composed of anything but Blobs or strings.
React Native Version
0.73.6
Affected Platforms
Runtime - Android, Runtime - iOS
Output of npx react-native info
N/A
Stacktrace or Logs
N/A
Reproducer
N/A
Screenshots and Videos
No response
贡献指南
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- 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
- Fork 仓库,在一个分支上完成修改。
- 提交 Pull Request,并在描述里引用这个 Issue 编号。
调研方向
首先阅读 packages/react-native/Libraries/Blob/Blob.js 和 packages/react-native/Libraries/Blob/BlobManager.js,尤其是构造函数以及现有的不受支持输入处理逻辑。确认 Android 和 iOS 上的当前行为,然后验证 Blob 构造是否接受 issue 中列出的可迭代输入类型,同时保留现有的 Blob 和字符串支持。
由索引模型根据 Issue 内容生成。
评估
- 技术栈
- javascript, react-native
- 领域
- mobile
- Issue 类型
- 缺陷
- 难度
- 4/5
- 预计耗时
- 3-5 天
- 活跃度
- 停滞
- 描述清晰度
- 基本清楚
- 新手友好度
- 35/100