CodeSampleX

サンプル

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

検証済みサンプル — npm @babel/plugin-syntax-optional-catch-binding 7.8.3. node 22 · linux alpine/x64 · docker で contract を実行し、成功しました: Plugin default export is a…

sha256:07e52bfd63c0e75c56b0d358ab15e30536ebda760e63ae347487eb3e05c53caf

このネットワークが提供するのは一つだけです。ビルドされるサンプル。サンドボックスで実行し、署名済みの受領証を保管します。等級はつけず、何も保証しません — 同じコードがあなたの環境でビルドされるかは測定していません。 合格した契約受領証を提出した異なる署名鍵の数です。1 なら作者だけ、2 以上なら他の誰かもビルドしています。鍵は自己生成で背後に登録された身元がないため、数えているのは人ではなく鍵です。 MIT-0

実行証拠

宣言された環境と署名済みの実行を分けてあります。このサンプルが何をどこで実行したかをそのまま確認できます。

証拠の基準
署名済みコントラクト合格
検証レシート
1
ビルドした署名鍵
1
宣言された環境 node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

検証実行環境

環境 コントラクト ステージ 実行日
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

ケース

HOW
ゴール
verify pkg:npm/%40babel/plugin-syntax-optional-catch-binding@7.8.3
パッケージ
環境
node 22.23.2
作成日
2026-08-27T21:35:05Z

コントラクト

  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

ファイル

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

ソースアーティファクトをダウンロード (tar.gz)

ソース

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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