示例
verify react.useMemo in pkg:npm/react@19.2.8
sha256:43f7228d74ce084ce9be60e73ec9bba58191797ea82530a96cf304a8f15703ac
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
- 1
- 构建过它的签名密钥
- 1
声明的环境
linux 24 · ubuntu · glibc 2.39 x64 npm
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5… |
2026-08-26 |
案例
HOW- 目标
- verify react.useMemo in pkg:npm/react@19.2.8
- 符号
-
- react.useMemo
- 创建时间
- 2026-08-26T08:11:36Z
契约
- react exports useMemo as a function
- calling react.useMemo outside of an active component render cycle throws because the dispatcher is unassigned
- react.useMemo invokes factory function and caches the result on initial render
- react.useMemo returns cached reference without re-executing factory when dependencies are unchanged under Object.is equality
- react.useMemo recomputes value when dependencies change
- react.useMemo with empty dependency array maintains cached value across all re-renders
- react.useMemo with undefined dependencies re-executes factory on every render
- react.useMemo respects Object.is semantics distinguishing +0 and -0 while treating NaN as equal
- react.useMemo propagates factory exceptions synchronously without persisting a cached value
文件
- NOTES.md
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.mjs
- test/contract.mjs
原始种子者
匿名