CodeSampleX

示例

@babel/plugin-syntax-optional-catch-binding 7.8.3

已验证示例 — npm @babel/plugin-syntax-optional-catch-binding 7.8.3. contract 在 node 22 · linux alpine/x64 · docker 上运行并通过： Plugin default export is a function…

sha256:07e52bfd63c0e75c56b0d358ab15e30536ebda760e63ae347487eb3e05c53caf

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 node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

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…		 2026-08-27

案例

HOW
目标
verify pkg:npm/%40babel/plugin-syntax-optional-catch-binding@7.8.3
包
环境
node 22.23.2
创建时间
2026-08-27T21:35:05Z

契约

  1. Plugin default export is a function factory asserting Babel 7 compatibility
  2. Plugin factory returns an object named syntax-optional-catch-binding with a manipulateOptions method
  3. manipulateOptions appends optionalCatchBinding to parserOpts.plugins array
  4. manipulateOptions preserves existing parser plugins while appending optionalCatchBinding
  5. configureParserOptions helper instantiates plugin and configures parser plugins list
  6. Plugin instantiation throws error when incompatible Babel version is asserted

文件

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.mjs
  • test/contract.mjs

下载源代码构件 (tar.gz)

源代码

PROMPT.md
Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:npm/%40babel/plugin-syntax-optional-catch-binding@7.8.3
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-syntax-optional-catch-binding@7.8.3
Constraints:
  - executionContext: node
Required runtime conditions:
  - ecosystem: npm
  - language: javascript
  - moduleSystem: cjs
  - packageManager: npm@10.9.8
  - runtime: node@22.23.2

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.
csx.json
{"case":{"caseId":"case:sha256:1fce5972329b4b313d057de204371cb2a757673d4c541e329b8b4864ef14eb08","constraints":{"executionContext":"node"},"contract":["Plugin default export is a function factory asserting Babel 7 compatibility","Plugin factory returns an object named syntax-optional-catch-binding with a manipulateOptions method","manipulateOptions appends optionalCatchBinding to parserOpts.plugins array","manipulateOptions preserves existing parser plugins while appending optionalCatchBinding","configureParserOptions helper instantiates plugin and configures parser plugins list","Plugin instantiation throws error when incompatible Babel version is asserted"],"goal":"verify pkg:npm/%40babel/plugin-syntax-optional-catch-binding@7.8.3","kind":"HOW","packages":["pkg:npm/%40babel/plugin-syntax-optional-catch-binding@7.8.3"],"schemaVersion":1},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"cjs","os":"linux","osVersionBucket":"24","packageManager":"npm","packageManagerVersion":"10.9.8","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/%40babel/plugin-syntax-optional-catch-binding@7.8.3"],"schemaVersion":1,"subject":"pkg:npm/%40babel/plugin-syntax-optional-catch-binding@7.8.3","verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "sample-babel-plugin-syntax-optional-catch-binding",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "license": "MIT-0",
  "dependencies": {
    "@babel/plugin-syntax-optional-catch-binding": "7.8.3"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40babel/plugin-syntax-optional-catch-binding@7.8.3",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-syntax-optional-catch-binding@7.8.3"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}
src/index.mjs
import syntaxOptionalCatchBindingModule from "@babel/plugin-syntax-optional-catch-binding";

export const syntaxOptionalCatchBinding =
  typeof syntaxOptionalCatchBindingModule === "function"
    ? syntaxOptionalCatchBindingModule
    : syntaxOptionalCatchBindingModule.default || syntaxOptionalCatchBindingModule;

export function instantiatePlugin(api = {}, options = {}) {
  const normalizedApi = {
    assertVersion: (range) => {
      if (typeof api.assertVersion === "function") {
        api.assertVersion(range);
      }
    },
    ...api
  };
  return syntaxOptionalCatchBinding(normalizedApi, options);
}

export function applyManipulateOptions(pluginInstance, opts = {}, parserOpts = { plugins: [] }) {
  if (typeof pluginInstance?.manipulateOptions !== "function") {
    throw new Error("Invalid plugin instance: missing manipulateOptions function");
  }
  pluginInstance.manipulateOptions(opts, parserOpts);
  return parserOpts;
}

export function configureParserOptions(initialPlugins = []) {
  const parserOpts = { plugins: [...initialPlugins] };
  const instance = instantiatePlugin({
    assertVersion: (version) => {
      if (typeof version === "number" && version !== 7) {
        throw new Error(`Unsupported Babel version: ${version}`);
      }
    }
  });
  applyManipulateOptions(instance, {}, parserOpts);
  return { instance, parserOpts };
}
test/contract.mjs
import assert from "node:assert/strict";
import syntaxOptionalCatchBindingModule from "@babel/plugin-syntax-optional-catch-binding";
import {
  syntaxOptionalCatchBinding,
  instantiatePlugin,
  applyManipulateOptions,
  configureParserOptions
} from "../src/index.mjs";

const rawPlugin =
  typeof syntaxOptionalCatchBindingModule === "function"
    ? syntaxOptionalCatchBindingModule
    : syntaxOptionalCatchBindingModule.default || syntaxOptionalCatchBindingModule;

// Contract 1: Plugin default export is a function factory asserting Babel 7 compatibility
{
  assert.equal(typeof syntaxOptionalCatchBinding, "function");
  assert.equal(typeof rawPlugin, "function");

  let assertedVersion = null;
  const api = {
    assertVersion: (v) => {
      assertedVersion = v;
    }
  };
  const pluginInstance = rawPlugin(api, {});
  assert.equal(assertedVersion, 7);
  assert.ok(pluginInstance);
}

// Contract 2: Plugin factory returns an object named syntax-optional-catch-binding with a manipulateOptions method
{
  const api = {
    assertVersion: () => {}
  };
  const pluginInstance = instantiatePlugin(api, {});
  assert.equal(pluginInstance.name, "syntax-optional-catch-binding");
  assert.equal(typeof pluginInstance.manipulateOptions, "function");
}

// Contract 3: manipulateOptions appends optionalCatchBinding to parserOpts.plugins array
{
  const api = {
    assertVersion: () => {}
  };
  const pluginInstance = instantiatePlugin(api, {});
  const parserOpts = { plugins: [] };
  applyManipulateOptions(pluginInstance, {}, parserOpts);
  assert.deepEqual(parserOpts.plugins, ["optionalCatchBinding"]);
}

// Contract 4: manipulateOptions preserves existing parser plugins while appending optionalCatchBinding
{
  const api = {
    assertVersion: () => {}
  };
  const pluginInstance = instantiatePlugin(api, {});
  const parserOpts = { plugins: ["jsx", "typescript"] };
  applyManipulateOptions(pluginInstance, {}, parserOpts);
  assert.deepEqual(parserOpts.plugins, ["jsx", "typescript", "optionalCatchBinding"]);
}

// Contract 5: configureParserOptions helper instantiates plugin and configures parser plugins list
{
  const { instance, parserOpts } = configureParserOptions(["flow"]);
  assert.equal(instance.name, "syntax-optional-catch-binding");
  assert.deepEqual(parserOpts.plugins, ["flow", "optionalCatchBinding"]);
}

// Contract 6: Plugin instantiation throws error when incompatible Babel version is asserted
{
  const incompatibleApi = {
    assertVersion: (v) => {
      if (v === 7) {
        throw new Error("Babel 7 not supported in this test harness");
      }
    }
  };
  assert.throws(
    () => instantiatePlugin(incompatibleApi, {}),
    /Babel 7 not supported/
  );
}

console.log("All @babel/plugin-syntax-optional-catch-binding contract tests passed successfully.");

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