샘플

@rollup/plugin-commonjs 29.0.3: ignoreTryCatch

검증된 샘플 — npm @rollup/plugin-commonjs 29.0.3: ignoreTryCatch. node 22 · linux debian/x64 · docker에서 contract를 실행해 통과했습니다: By default, @rollup/plugin-commonjs…

sha256:d8b4a7d44e66ca9e49856354ceee9722a12adacd7ab94b7e36119939ed9f994b

MIT-0

실행 증거

선언된 환경과 서명된 실행을 분리해 두었습니다. 이 샘플이 무엇을 어디서 실행했는지 그대로 볼 수 있습니다.

증거 기준: 서명된 컨트랙트 통과
검증 영수증: 1
빌드한 서명 키: 1

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

검증 실행 환경

환경	컨트랙트	단계	실행일
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

케이스

HOW

목표: verify pkg:npm/%40rollup/plugin-commonjs@29.0.3
패키지: @rollup/plugin-commonjs 29.0.3
심벌: @rollup/plugin-commonjs
ignoreTryCatch
환경: node 22.23.2
생성일: 2026-09-03T12:34:51Z

컨트랙트

By default, @rollup/plugin-commonjs leaves external require calls inside try-catch blocks untransformed as dynamic require() calls, preventing top-level static ESM imports.
Setting ignoreTryCatch: false hoists external require calls inside try-catch to top-level static ESM imports, bypassing runtime try-catch error handling.
Setting ignoreTryCatch: 'remove' replaces external require calls inside try-catch with undefined inline without emitting static ESM imports.
Specifying an array of module IDs in ignoreTryCatch selectively preserves matching IDs as unconverted requires while hoisting non-matching IDs to static imports.
Providing a filter function to ignoreTryCatch dynamically evaluates external module IDs and supports returning 'remove', true, or false per module ID.

파일

NOTES.md
PROMPT.md
csx.json
package-lock.json
package.json
spec.json
test/contract.mjs

소스 아티팩트 내려받기 (tar.gz)

소스

NOTES.md

# Notes: Rollup CommonJS Plugin Optional Dependency Handling with ignoreTryCatch

## Search Result
`search_known_solution` returned `NO_SAFE_MATCH` for `ignoreTryCatch` in `@rollup/plugin-commonjs@29.0.3`. Existing public samples for this version only cover `defaultIsModuleExports`, `requireNodeBuiltins`, and `esmExternals`. This sample verifies optional external dependency resolution and import hoisting control via `ignoreTryCatch`.

## Naive Model Assumption
Developers and models often assume that `@rollup/plugin-commonjs` either always hoists external require statements to top-level static imports regardless of try-catch blocks, or conversely that setting `ignoreTryCatch: false` will gracefully catch import failures at runtime.

## Failure Mode
When `ignoreTryCatch: false` is configured, external require calls located inside try-catch clauses are converted into top-level static ESM imports (`import require$$0 from 'dep'`). If the external dependency is optional or missing at runtime, the module loader aborts immediately with a startup error (such as `ERR_MODULE_NOT_FOUND`) during module evaluation before any user code or try-catch block can execute. In contrast, the default `ignoreTryCatch: true` preserves the dynamic `require()` call inside the try-catch block, and `ignoreTryCatch: 'remove'` replaces the require call with `undefined` inline to completely avoid both startup crashes and runtime resolution errors.

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/%40rollup/plugin-commonjs@29.0.3
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40rollup/plugin-commonjs@29.0.3
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":{"believed":"When bundling CommonJS modules that wrap external require calls inside try-catch blocks into ESM, @rollup/plugin-commonjs always hoists the requires to top-level static imports or always preserves runtime try-catch error handling.","caseId":"case:sha256:a044e1bd6e862c00dbde8c946946102740b1e8514f3df85f97d513df7256f7d4","constraints":{"executionContext":"node"},"contract":["By default, @rollup/plugin-commonjs leaves external require calls inside try-catch blocks untransformed as dynamic require() calls, preventing top-level static ESM imports.","Setting ignoreTryCatch: false hoists external require calls inside try-catch to top-level static ESM imports, bypassing runtime try-catch error handling.","Setting ignoreTryCatch: 'remove' replaces external require calls inside try-catch with undefined inline without emitting static ESM imports.","Specifying an array of module IDs in ignoreTryCatch selectively preserves matching IDs as unconverted requires while hoisting non-matching IDs to static imports.","Providing a filter function to ignoreTryCatch dynamically evaluates external module IDs and supports returning 'remove', true, or false per module ID."],"goal":"verify pkg:npm/%40rollup/plugin-commonjs@29.0.3","kind":"HOW","packages":["pkg:npm/%40rollup/plugin-commonjs@29.0.3"],"schemaVersion":1,"symbols":["@rollup/plugin-commonjs","ignoreTryCatch"]},"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/%40rollup/plugin-commonjs@29.0.3"],"schemaVersion":1,"subject":"pkg:npm/%40rollup/plugin-commonjs@29.0.3","symbols":["@rollup/plugin-commonjs","ignoreTryCatch"],"verifierAdapter":"node-typescript@1"}

package-lock.json

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        "@rollup/rollup-openbsd-x64": "4.62.4",
        "@rollup/rollup-openharmony-arm64": "4.62.4",
        "@rollup/rollup-win32-arm64-msvc": "4.62.4",
        "@rollup/rollup-win32-ia32-msvc": "4.62.4",
        "@rollup/rollup-win32-x64-gnu": "4.62.4",
        "@rollup/rollup-win32-x64-msvc": "4.62.4",
        "fsevents": "~2.3.2"
      }
    }
  }
}

package.json

{
  "name": "sample-rollup-plugin-commonjs-ignore-try-catch",
  "version": "1.0.0",
  "type": "commonjs",
  "dependencies": {
    "@rollup/plugin-commonjs": "29.0.3",
    "rollup": "4.62.4"
  }
}

spec.json

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40rollup/plugin-commonjs@29.0.3",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40rollup/plugin-commonjs@29.0.3"
  ],
  "symbols": [
    "ignoreTryCatch"
  ]
}

test/contract.mjs

import assert from 'node:assert/strict';
import { rollup } from 'rollup';
import commonjs from '@rollup/plugin-commonjs';

async function runContract() {
  // ---------------------------------------------------------------------------
  // Contract 1:
  // By default, @rollup/plugin-commonjs leaves external require calls inside
  // try-catch blocks untransformed as dynamic require() calls, preventing top-level
  // static ESM imports.
  // ---------------------------------------------------------------------------
  {
    const bundle = await rollup({
      input: 'entry-default.js',
      external: ['optional-pkg'],
      plugins: [
        {
          name: 'virtual-loader',
          resolveId(id) {
            if (id === 'entry-default.js') return id;
          },
          load(id) {
            if (id === 'entry-default.js') {
              return `
                let dep;
                try {
                  dep = require('optional-pkg');
                } catch (err) {
                  dep = 'fallback';
                }
                module.exports = { dep };
              `;
            }
          }
        },
        commonjs()
      ]
    });

    const { output } = await bundle.generate({ format: 'es' });
    const code = output[0].code;

    assert.equal(
      code.includes("from 'optional-pkg'"),
      false,
      'Default ignoreTryCatch: true must not hoist static ESM import for optional-pkg'
    );
    assert.match(
      code,
      /try\s*\{\s*dep\s*=\s*require\('optional-pkg'\);\s*\}\s*catch/,
      'Default ignoreTryCatch: true preserves dynamic require call inside try block'
    );
  }

  // ---------------------------------------------------------------------------
  // Contract 2:
  // Setting ignoreTryCatch: false hoists external require calls inside try-catch
  // to top-level static ESM imports, bypassing runtime try-catch error handling.
  // ---------------------------------------------------------------------------
  {
    const bundle = await rollup({
      input: 'entry-false.js',
      external: ['optional-pkg'],
      plugins: [
        {
          name: 'virtual-loader',
          resolveId(id) {
            if (id === 'entry-false.js') return id;
          },
          load(id) {
            if (id === 'entry-false.js') {
              return `
                let dep;
                try {
                  dep = require('optional-pkg');
                } catch (err) {
                  dep = 'fallback';
                }
                module.exports = { dep };
              `;
            }
          }
        },
        commonjs({
          ignoreTryCatch: false
        })
      ]
    });

    const { output } = await bundle.generate({ format: 'es' });
    const code = output[0].code;

    assert.match(
      code,
      /^import\s+require\$\$\d+\s+from\s+'optional-pkg';/m,
      'ignoreTryCatch: false hoists static ESM import to top-level'
    );
    assert.match(
      code,
      /try\s*\{\s*dep\s*=\s*require\$\$\d+;\s*\}\s*catch/,
      'ignoreTryCatch: false assigns imported variable inside try block'
    );
    assert.equal(
      code.includes("require('optional-pkg')"),
      false,
      'ignoreTryCatch: false eliminates dynamic require call'
    );
  }

  // ---------------------------------------------------------------------------
  // Contract 3:
  // Setting ignoreTryCatch: 'remove' replaces external require calls inside try-catch
  // with undefined inline without emitting static ESM imports.
  // ---------------------------------------------------------------------------
  {
    const bundle = await rollup({
      input: 'entry-remove.js',
      external: ['optional-pkg'],
      plugins: [
        {
          name: 'virtual-loader',
          resolveId(id) {
            if (id === 'entry-remove.js') return id;
          },
          load(id) {
            if (id === 'entry-remove.js') {
              return `
                let dep;
                try {
                  dep = require('optional-pkg');
                } catch (err) {
                  dep = 'fallback';
                }
                module.exports = { dep };
              `;
            }
          }
        },
        commonjs({
          ignoreTryCatch: 'remove'
        })
      ]
    });

    const { output } = await bundle.generate({ format: 'es' });
    const code = output[0].code;

    assert.equal(
      code.includes("from 'optional-pkg'"),
      false,
      'ignoreTryCatch: "remove" must not hoist static ESM import'
    );
    assert.match(
      code,
      /try\s*\{\s*dep\s*=\s*undefined;\s*\}\s*catch/,
      'ignoreTryCatch: "remove" replaces require call with undefined'
    );
  }

  // ---------------------------------------------------------------------------
  // Contract 4:
  // Specifying an array of module IDs in ignoreTryCatch selectively preserves only
  // matching IDs as unconverted requires while hoisting non-matching IDs to static imports.
  // ---------------------------------------------------------------------------
  {
    const bundle = await rollup({
      input: 'entry-array.js',
      external: ['pkg-keep', 'pkg-hoist'],
      plugins: [
        {
          name: 'virtual-loader',
          resolveId(id) {
            if (id === 'entry-array.js') return id;
          },
          load(id) {
            if (id === 'entry-array.js') {
              return `
                let a, b;
                try { a = require('pkg-keep'); } catch (e) { a = 'fallback-a'; }
                try { b = require('pkg-hoist'); } catch (e) { b = 'fallback-b'; }
                module.exports = { a, b };
              `;
            }
          }
        },
        commonjs({
          ignoreTryCatch: ['pkg-keep']
        })
      ]
    });

    const { output } = await bundle.generate({ format: 'es' });
    const code = output[0].code;

    assert.match(
      code,
      /^import\s+require\$\$\d+\s+from\s+'pkg-hoist';/m,
      'Non-matching ID is hoisted as static ESM import'
    );
    assert.equal(
      code.includes("from 'pkg-keep'"),
      false,
      'Matching ID pkg-keep is not hoisted'
    );
    assert.match(
      code,
      /try\s*\{\s*a\s*=\s*require\('pkg-keep'\);\s*\}\s*catch/,
      'Matching ID pkg-keep remains as require call inside try block'
    );
  }

  // ---------------------------------------------------------------------------
  // Contract 5:
  // Providing a filter function to ignoreTryCatch dynamically evaluates external module IDs
  // and supports returning 'remove', true, or false per module ID.
  // ---------------------------------------------------------------------------
  {
    const bundle = await rollup({
      input: 'entry-fn.js',
      external: ['pkg-remove', 'pkg-convert'],
      plugins: [
        {
          name: 'virtual-loader',
          resolveId(id) {
            if (id === 'entry-fn.js') return id;
          },
          load(id) {
            if (id === 'entry-fn.js') {
              return `
                let r, c;
                try { r = require('pkg-remove'); } catch (e) { r = 'fallback-r'; }
                try { c = require('pkg-convert'); } catch (e) { c = 'fallback-c'; }
                module.exports = { r, c };
              `;
            }
          }
        },
        commonjs({
          ignoreTryCatch: (id) => {
            if (id === 'pkg-remove') return 'remove';
            return false;
          }
        })
      ]
    });

    const { output } = await bundle.generate({ format: 'es' });
    const code = output[0].code;

    assert.match(
      code,
      /^import\s+require\$\$\d+\s+from\s+'pkg-convert';/m,
      'Filter returning false hoists pkg-convert as static ESM import'
    );
    assert.match(
      code,
      /try\s*\{\s*r\s*=\s*undefined;\s*\}\s*catch/,
      'Filter returning "remove" replaces require call with undefined'
    );
    assert.equal(
      code.includes("from 'pkg-remove'"),
      false,
      'Filter returning "remove" does not emit static ESM import'
    );
  }

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

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

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