react / react/react-native

Blob constructor is not spec compliant

未关闭
#44,125 9 条评论 4 个 reaction 已指派 0 人 在 GitHub 查看

还没有人认领这个 Issue。

Needs: Attention Needs: Triage :mag: Never gets stale
主要语言
C++
星标
127k
派生
25.3k
平均合并
1 天 23 小时
30 天内合并 PR
4

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
  1. 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

打开贡献指南

从这里开始

  1. 先读完整个 Issue,再读项目的贡献指南。
  2. 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
  3. Fork 仓库,在一个分支上完成修改。
  4. 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

把新 issue 发到你的邮箱

精选适合新手参与的 GitHub issue 摘要。