CodeSampleX

Sample

vite 5.4.14: build

Verified sample for npm vite 5.4.14: build. The contract ran on node 22 · linux debian/x64 · docker and passed: build is exported as a callable function from…

sha256:e696290acc1e970f5ffa7a7cb1dc5fb51397f9d9fe64d1efd4d925b5a2f578f8

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
Declared environment node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Verification-run environments

Environment Contract Stages Run
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…		 2026-09-07

Case

HOW
Goal
verify build in pkg:npm/vite@5.4.14
Packages
Symbols
  • build
Environment
node 22.23.2
Created
2026-09-07T03:08:49Z

Contract

  1. build is exported as a callable function from vite
  2. build bundles single ES module entry in-memory with write false and returns RollupOutput chunks
  3. build bundles multi-format distribution with custom library options in build.lib returning an array of RollupOutputs
  4. build preserves external dependencies specified in rollupOptions.external without bundling them
  5. build injects defined global constant replacements via the define configuration option
  6. build rejects with an error when the configured entry point does not exist

Files

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

Download the source artifact (tar.gz)

Source

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 build in pkg:npm/vite@5.4.14
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/vite@5.4.14
Demonstrate these symbols/APIs:
  - build

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:e4a52167dd01f44efdb94be7e36258dc18c2e434de2ea6cb66f81218362d8a76","constraints":{"executionContext":"node"},"contract":["build is exported as a callable function from vite","build bundles single ES module entry in-memory with write false and returns RollupOutput chunks","build bundles multi-format distribution with custom library options in build.lib returning an array of RollupOutputs","build preserves external dependencies specified in rollupOptions.external without bundling them","build injects defined global constant replacements via the define configuration option","build rejects with an error when the configured entry point does not exist"],"goal":"verify build in pkg:npm/vite@5.4.14","kind":"HOW","packages":["pkg:npm/vite@5.4.14"],"schemaVersion":1,"symbols":["build"]},"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/vite@5.4.14"],"schemaVersion":1,"subject":"pkg:npm/vite@5.4.14","symbols":["build"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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  "name": "sample-vite",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
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    "": {
      "name": "sample-vite",
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}
package.json
{
  "name": "sample-vite",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "license": "MIT-0",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "vite": "5.4.14"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify build in pkg:npm/vite@5.4.14",
  "kind": "HOW",
  "packages": [
    "pkg:npm/vite@5.4.14"
  ],
  "symbols": [
    "build"
  ]
}
test/contract.mjs
import assert from 'node:assert/strict';
import fs from 'node:fs/promises';
import path from 'node:path';
import os from 'node:os';
import { build } from 'vite';

async function testContract() {
  const tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'vite-build-contract-'));

  try {
    // 1. build is exported as a callable function from vite
    assert.equal(typeof build, 'function');
    assert.equal(build.name, 'build');

    // 2. build bundles single ES module entry in-memory with write false and returns RollupOutput chunks
    const entry1 = path.join(tmpDir, 'entry1.js');
    await fs.writeFile(entry1, 'export const answer = 42; export const getMessage = () => "hello world";');

    const res1 = await build({
      root: tmpDir,
      configFile: false,
      logLevel: 'silent',
      build: {
        write: false,
        minify: false,
        rollupOptions: {
          input: entry1,
          preserveEntrySignatures: 'strict'
        }
      }
    });

    const output1 = Array.isArray(res1) ? res1[0].output : res1.output;
    assert.ok(Array.isArray(output1));
    const chunk1 = output1.find((c) => c.type === 'chunk');
    assert.ok(chunk1);
    assert.ok(chunk1.code.includes('42'));
    assert.ok(chunk1.code.includes('hello world'));

    // 3. build bundles multi-format distribution with custom library options in build.lib returning an array of RollupOutputs
    const entry2 = path.join(tmpDir, 'entry2.js');
    await fs.writeFile(entry2, 'export function multiply(a, b) { return a * b; }');

    const res2 = await build({
      root: tmpDir,
      configFile: false,
      logLevel: 'silent',
      build: {
        write: false,
        lib: {
          entry: entry2,
          name: 'MathLib',
          formats: ['es', 'cjs'],
          fileName: (format) => `math.${format}.js`
        }
      }
    });

    assert.ok(Array.isArray(res2));
    assert.equal(res2.length, 2);
    const output2 = res2.flatMap((r) => r.output);
    const esChunk = output2.find((c) => c.fileName === 'math.es.js');
    const cjsChunk = output2.find((c) => c.fileName === 'math.cjs.js');
    assert.ok(esChunk, 'ES chunk should exist');
    assert.ok(cjsChunk, 'CJS chunk should exist');
    assert.ok(esChunk.code.includes('multiply'));
    assert.ok(cjsChunk.code.includes('multiply'));

    // 4. build preserves external dependencies specified in rollupOptions.external without bundling them
    const entry3 = path.join(tmpDir, 'entry3.js');
    await fs.writeFile(entry3, 'import fs from "node:fs"; export const hasFile = (p) => fs.existsSync(p);');

    const res3 = await build({
      root: tmpDir,
      configFile: false,
      logLevel: 'silent',
      build: {
        write: false,
        minify: false,
        rollupOptions: {
          input: entry3,
          external: ['node:fs'],
          preserveEntrySignatures: 'strict'
        }
      }
    });

    const output3 = Array.isArray(res3) ? res3[0].output : res3.output;
    const chunk3 = output3.find((c) => c.type === 'chunk');
    assert.ok(chunk3);
    assert.ok(chunk3.code.includes('node:fs'));

    // 5. build injects defined global constant replacements via the define configuration option
    const entry4 = path.join(tmpDir, 'entry4.js');
    await fs.writeFile(entry4, 'export const configVersion = __APP_BUILD_VERSION__;');

    const res4 = await build({
      root: tmpDir,
      configFile: false,
      logLevel: 'silent',
      define: {
        __APP_BUILD_VERSION__: JSON.stringify('9.8.7-release')
      },
      build: {
        write: false,
        minify: false,
        rollupOptions: {
          input: entry4,
          preserveEntrySignatures: 'strict'
        }
      }
    });

    const output4 = Array.isArray(res4) ? res4[0].output : res4.output;
    const chunk4 = output4.find((c) => c.type === 'chunk');
    assert.ok(chunk4);
    assert.ok(chunk4.code.includes('9.8.7-release'));
    assert.ok(!chunk4.code.includes('__APP_BUILD_VERSION__'));

    // 6. build rejects with an error when the configured entry point does not exist
    const missingEntry = path.join(tmpDir, 'non_existent_file.js');
    await assert.rejects(
      async () => {
        await build({
          root: tmpDir,
          configFile: false,
          logLevel: 'silent',
          build: {
            write: false,
            rollupOptions: {
              input: missingEntry
            }
          }
        });
      }
    );

    console.log('Contract tests passed successfully.');
  } finally {
    await fs.rm(tmpDir, { recursive: true, force: true });
  }
}

await testContract();

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