CodeSampleX

示例

@rollup/plugin-commonjs 28.0.9: demonstrate ignoreTryCatch behavior for external require calls in @rollup/plugin-commonjs

已验证示例 — npm @rollup/plugin-commonjs 28.0.9: demonstrate ignoreTryCatch behavior for external require calls in @rollup/plugin-commonjs. contract 在 node 22 …

sha256:40be6d2b25844b2fd25c6a68e3cb0e03dd47385952b2a951a9276553ebb5a0e6

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 debian/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22@sha256:8a34c4ab3ea2…		 2026-09-03

案例

HOW
目标
demonstrate ignoreTryCatch behavior for external require calls in @rollup/plugin-commonjs
包
符号
  • ignoreTryCatch
环境
node 22.23.2
创建时间
2026-09-03T13:22:42Z

契约

  1. External require calls inside try-catch blocks are preserved unconverted by default (ignoreTryCatch: true), leaving literal require expressions intact.
  2. Setting ignoreTryCatch: false converts external require calls inside try-catch into hoisted top-level static imports outside the try block.
  3. Setting ignoreTryCatch: 'remove' replaces external require calls inside try-catch blocks with undefined, removing the external dependency entirely.
  4. Setting ignoreTryCatch to an array or filter function enables selective per-module control over which external require calls in try-catch blocks are preserved, converted, or removed.

文件

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.js
  • 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: demonstrate ignoreTryCatch behavior for external require calls in @rollup/plugin-commonjs
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40rollup/plugin-commonjs@28.0.9
Demonstrate these symbols/APIs:
  - ignoreTryCatch

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:c0bd4ebc9ba7a5b86a6df42489cb0ebe4b50374382c231b7bab6ac7213058713","contract":["External require calls inside try-catch blocks are preserved unconverted by default (ignoreTryCatch: true), leaving literal require expressions intact.","Setting ignoreTryCatch: false converts external require calls inside try-catch into hoisted top-level static imports outside the try block.","Setting ignoreTryCatch: 'remove' replaces external require calls inside try-catch blocks with undefined, removing the external dependency entirely.","Setting ignoreTryCatch to an array or filter function enables selective per-module control over which external require calls in try-catch blocks are preserved, converted, or removed."],"goal":"demonstrate ignoreTryCatch behavior for external require calls in @rollup/plugin-commonjs","kind":"HOW","packages":["pkg:npm/%40rollup/plugin-commonjs@28.0.9"],"schemaVersion":1,"symbols":["ignoreTryCatch"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"esm","os":"linux","osVersionBucket":"24","packageManager":"npm","packageManagerVersion":"10.9.8","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/%40rollup/plugin-commonjs@28.0.9"],"schemaVersion":1,"subject":"pkg:npm/%40rollup/plugin-commonjs@28.0.9","symbols":["ignoreTryCatch"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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      "name": "sample-rollup-plugin-commonjs-ignore-try-catch",
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      "license": "MIT",
      "engines": {
        "node": ">=12"
      },
      "funding": {
        "url": "https://github.com/sponsors/jonschlinkert"
      }
    },
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      "bin": {
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      },
      "engines": {
        "node": ">=18.0.0",
        "npm": ">=8.0.0"
      },
      "optionalDependencies": {
        "@rollup/rollup-android-arm-eabi": "4.34.8",
        "@rollup/rollup-android-arm64": "4.34.8",
        "@rollup/rollup-darwin-arm64": "4.34.8",
        "@rollup/rollup-darwin-x64": "4.34.8",
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      "license": "MIT"
    }
  }
}
package.json
{
  "name": "sample-rollup-plugin-commonjs-ignore-try-catch",
  "version": "1.0.0",
  "type": "module",
  "license": "MIT-0",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "@rollup/plugin-commonjs": "28.0.9",
    "rollup": "4.34.8"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "demonstrate ignoreTryCatch behavior for external require calls in @rollup/plugin-commonjs",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40rollup/plugin-commonjs@28.0.9"
  ],
  "symbols": [
    "ignoreTryCatch"
  ]
}
src/index.js
import * as rollup from 'rollup';
import commonjs from '@rollup/plugin-commonjs';

/**
 * Bundles virtual modules using Rollup and @rollup/plugin-commonjs.
 *
 * @param {string} entryCode - The entry point code (CommonJS).
 * @param {object} [pluginOptions] - Options passed to @rollup/plugin-commonjs.
 * @param {Record<string, string>} [bundledModules] - In-memory modules that should be bundled.
 * @returns {Promise<{ code: string }>} Bundled code output.
 */
export async function bundleCommonJs(entryCode, pluginOptions = {}, bundledModules = {}) {
  const bundle = await rollup.rollup({
    input: 'entry.cjs',
    plugins: [
      {
        name: 'virtual-fixtures',
        resolveId(id) {
          if (id === 'entry.cjs' || (bundledModules && bundledModules[id])) {
            return id;
          }
          // External dependency
          return { id, external: true };
        },
        load(id) {
          if (id === 'entry.cjs') {
            return entryCode;
          }
          if (bundledModules && bundledModules[id]) {
            return bundledModules[id];
          }
          return null;
        }
      },
      commonjs(pluginOptions)
    ]
  });

  const { output } = await bundle.generate({ format: 'es' });
  return { code: output[0].code };
}
test/contract.mjs
import assert from 'node:assert/strict';
import { bundleCommonJs } from '../src/index.js';

async function runContract() {
  const singleOptionalFixture = `
let mod;
try {
  mod = require('external-optional');
} catch (e) {
  mod = null;
}
module.exports = { mod };
`;

  // ---------------------------------------------------------------------------
  // Contract Assertion 1:
  // External require calls inside try-catch blocks are preserved unconverted by
  // default (ignoreTryCatch: true), leaving literal require expressions intact.
  // ---------------------------------------------------------------------------
  {
    const defaultResult = await bundleCommonJs(singleOptionalFixture);
    assert.match(
      defaultResult.code,
      /require\(['"]external-optional['"]\)/,
      'assert external require remains intact inside try-catch when ignoreTryCatch is true (default)'
    );
    assert.doesNotMatch(
      defaultResult.code,
      /import\s+.*?\s+from\s+['"]external-optional['"]/,
      'assert no top-level static import is hoisted for external optional require by default'
    );

    // Explicit ignoreTryCatch: true behaves identically to default
    const explicitTrueResult = await bundleCommonJs(singleOptionalFixture, { ignoreTryCatch: true });
    assert.match(
      explicitTrueResult.code,
      /require\(['"]external-optional['"]\)/,
      'assert explicit ignoreTryCatch: true preserves external require inside try-catch'
    );
  }

  // ---------------------------------------------------------------------------
  // Contract Assertion 2:
  // Setting ignoreTryCatch: false converts external require calls inside try-catch
  // into hoisted top-level static imports outside the try block.
  // ---------------------------------------------------------------------------
  {
    const falseResult = await bundleCommonJs(singleOptionalFixture, { ignoreTryCatch: false });
    assert.match(
      falseResult.code,
      /import\s+([a-zA-Z0-9_$]+)\s+from\s+['"]external-optional['"]/,
      'assert setting ignoreTryCatch: false hoists external require to top-level static import'
    );
    assert.doesNotMatch(
      falseResult.code,
      /require\(['"]external-optional['"]\)/,
      'assert literal require expression is replaced when ignoreTryCatch is false'
    );
  }

  // ---------------------------------------------------------------------------
  // Contract Assertion 3:
  // Setting ignoreTryCatch: 'remove' replaces external require calls inside
  // try-catch blocks with undefined, removing the external dependency entirely.
  // ---------------------------------------------------------------------------
  {
    const removeResult = await bundleCommonJs(singleOptionalFixture, { ignoreTryCatch: 'remove' });
    assert.match(
      removeResult.code,
      /mod\s*=\s*undefined/,
      'assert require expression is replaced with undefined when ignoreTryCatch is "remove"'
    );
    assert.doesNotMatch(
      removeResult.code,
      /from\s+['"]external-optional['"]/,
      'assert no external import remains when ignoreTryCatch is "remove"'
    );
    assert.doesNotMatch(
      removeResult.code,
      /require\(['"]external-optional['"]\)/,
      'assert literal require call is removed when ignoreTryCatch is "remove"'
    );
  }

  // ---------------------------------------------------------------------------
  // Contract Assertion 4:
  // Setting ignoreTryCatch to an array or filter function enables selective
  // per-module control over which external require calls in try-catch blocks
  // are preserved, converted, or removed.
  // ---------------------------------------------------------------------------
  {
    const multiModuleFixture = `
let a, b;
try { a = require('pkg-preserved'); } catch (e) { a = null; }
try { b = require('pkg-transformed'); } catch (e) { b = null; }
module.exports = { a, b };
`;

    // Array filter: only 'pkg-preserved' is ignored (left unconverted); 'pkg-transformed' is converted to static import
    const arrayResult = await bundleCommonJs(multiModuleFixture, {
      ignoreTryCatch: ['pkg-preserved']
    });
    assert.match(
      arrayResult.code,
      /require\(['"]pkg-preserved['"]\)/,
      'assert modules specified in ignoreTryCatch array remain unconverted'
    );
    assert.match(
      arrayResult.code,
      /import\s+.*?\s+from\s+['"]pkg-transformed['"]/,
      'assert modules omitted from ignoreTryCatch array are converted into static imports'
    );
    assert.doesNotMatch(
      arrayResult.code,
      /import\s+.*?\s+from\s+['"]pkg-preserved['"]/,
      'assert preserved module is not hoisted to static import'
    );

    // Function filter: selectively remove 'pkg-transformed' while preserving 'pkg-preserved'
    const fnResult = await bundleCommonJs(multiModuleFixture, {
      ignoreTryCatch: (id) => (id === 'pkg-transformed' ? 'remove' : true)
    });
    assert.match(
      fnResult.code,
      /require\(['"]pkg-preserved['"]\)/,
      'assert function filter returning true preserves require call'
    );
    assert.match(
      fnResult.code,
      /b\s*=\s*undefined/,
      'assert function filter returning "remove" replaces require call with undefined'
    );
    assert.doesNotMatch(
      fnResult.code,
      /from\s+['"]pkg-transformed['"]/,
      'assert function filter returning "remove" produces no static import'
    );
  }

  console.log('All contract assertions passed successfully.');
}

runContract().catch((err) => {
  console.error('Contract failed:', err);
  process.exit(1);
});

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