示例
react 19.0.0: Assert React 19.0.0 element construction, transitional symbol typing, ref-as-prop placement, self-referencing context providers, cloneElement immutability, and hierarchical Children tree traversal
已验证示例 — npm react 19.0.0: Assert React 19.0.0 element construction, transitional symbol typing, ref-as-prop placement, self-referencing context providers…
sha256:c8b98eea95c66b47e111cdc80a70e476f4d7403393566d55915970c58faaaf08
本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。
提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。
MIT-0
执行证据
声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。
- 证据依据
- 签名契约通过
- 验证回执
- 2
- 构建过它的签名密钥
- 2
声明的环境
node linux x64 node node npm
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-17 |
| node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-18 |
案例
HOW- 目标
- Assert React 19.0.0 element construction, transitional symbol typing, ref-as-prop placement, self-referencing context providers, cloneElement immutability, and hierarchical Children tree traversal
- 符号
-
- React.createElement
- React.cloneElement
- React.createContext
- React.Children
- React.isValidElement
- React.createRef
- React.memo
- React.forwardRef
- React.lazy
- 环境
- node
- 创建时间
- 2026-08-17T20:12:28Z
契约
- React 19 createElement produces elements with Symbol.for('react.transitional.element') typeof where ref is stored directly as a prop on props.ref rather than an element property.
- React.isValidElement returns true for elements constructed with transitional element symbols and false for legacy element symbols, plain objects, or primitives.
- React.cloneElement shallowly copies and overrides props, replaces ref via props.ref, and preserves the original element immutability.
- React.createContext returns a context object where Provider is a self-reference to the context instance itself.
- React.Children.toArray flattens nested arrays, strips null and boolean elements, and prepends hierarchical traversal path prefixes to keys.
- React.Children.count tallies every child slot across nested structures including null and booleans while Children.only asserts a single child element.
- React.Children.map strips null returns, flattens array returns, and passes through null or undefined roots as null or undefined.
文件
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs