Exemplo

@babel/plugin-syntax-numeric-separator 7.10.4: default

Amostra verificada para npm @babel/plugin-syntax-numeric-separator 7.10.4: default. O contrato rodou em node 22 · linux debian/x64 · docker e passou.

sha256:061d61f4627e68ee28351a98366f62695f410bd292302882871556077f7c17f4

MIT-0

Evidência de execução

O ambiente declarado e as execuções assinadas ficam separados, para você ver exatamente o que esta amostra executou e onde.

Base da evidência: Contrato assinado aprovado
Recibos de verificação: 1
Chaves de assinatura que o compilaram: 1

Ambiente declarado linux 24 · ubuntu · glibc 2.39 x64 npm

Ambientes das execuções de verificação

Ambiente	Contrato	Etapas	Execução
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…	2026-09-05

Caso

HOW

Objetivo: verify @babel/plugin-syntax-numeric-separator.default in pkg:npm/%40babel/plugin-syntax-numeric-separator@7.10.4
Pacotes: @babel/plugin-syntax-numeric-separator 7.10.4
Símbolos: @babel/plugin-syntax-numeric-separator.default
Criado: 2026-09-05T22:11:02Z

Contrato

Plugin default export is a function factory asserting Babel 7 compatibility
Plugin factory returns a Babel plugin object named syntax-numeric-separator with a manipulateOptions hook
manipulateOptions hook pushes numericSeparator into parser options plugins array
manipulateOptions hook appends numericSeparator preserving existing parser plugins
Module helper configureNumericSeparator returns updated parser options while preserving input immutability

Arquivos

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

Baixar o artefato de código-fonte (tar.gz)

Código-fonte

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 @babel/plugin-syntax-numeric-separator.default in pkg:npm/%40babel/plugin-syntax-numeric-separator@7.10.4
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-syntax-numeric-separator@7.10.4
Demonstrate these symbols/APIs:
  - @babel/plugin-syntax-numeric-separator.default

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:sha256:778995648050b7d52d006cc4584d783bd88b74034ec69faef22d574ece759a92","contract":["Plugin default export is a function factory asserting Babel 7 compatibility","Plugin factory returns a Babel plugin object named syntax-numeric-separator with a manipulateOptions hook","manipulateOptions hook pushes numericSeparator into parser options plugins array","manipulateOptions hook appends numericSeparator preserving existing parser plugins","Module helper configureNumericSeparator returns updated parser options while preserving input immutability"],"goal":"verify @babel/plugin-syntax-numeric-separator.default in pkg:npm/%40babel/plugin-syntax-numeric-separator@7.10.4","kind":"HOW","packages":["pkg:npm/%40babel/plugin-syntax-numeric-separator@7.10.4"],"schemaVersion":1,"symbols":["@babel/plugin-syntax-numeric-separator.default"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"npm","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/%40babel/plugin-syntax-numeric-separator@7.10.4"],"schemaVersion":1,"subject":"pkg:npm/%40babel/plugin-syntax-numeric-separator@7.10.4","symbols":["@babel/plugin-syntax-numeric-separator.default"],"verifierAdapter":"node-typescript@1"}

package-lock.json

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package.json

{
  "name": "sample-babel-plugin-syntax-numeric-separator",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "license": "MIT-0",
  "dependencies": {
    "@babel/plugin-syntax-numeric-separator": "7.10.4"
  }
}

spec.json

{
  "schemaVersion": 1,
  "goal": "verify @babel/plugin-syntax-numeric-separator.default in pkg:npm/%40babel/plugin-syntax-numeric-separator@7.10.4",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-syntax-numeric-separator@7.10.4"
  ],
  "symbols": [
    "@babel/plugin-syntax-numeric-separator.default"
  ]
}

src/index.mjs

import numericSeparatorPluginModule from "@babel/plugin-syntax-numeric-separator";

export const numericSeparatorPlugin =
  typeof numericSeparatorPluginModule === "function"
    ? numericSeparatorPluginModule
    : numericSeparatorPluginModule.default || numericSeparatorPluginModule;

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

export function configureNumericSeparator(parserOpts = {}) {
  const plugins = parserOpts.plugins ? [...parserOpts.plugins] : [];
  const normalizedParserOpts = { ...parserOpts, plugins };
  const pluginInstance = instantiatePlugin();
  if (typeof pluginInstance.manipulateOptions === "function") {
    pluginInstance.manipulateOptions({}, normalizedParserOpts);
  }
  return normalizedParserOpts;
}

test/contract.mjs

import assert from "node:assert/strict";
import numericSeparatorPluginModule from "@babel/plugin-syntax-numeric-separator";
import {
  numericSeparatorPlugin,
  instantiatePlugin,
  configureNumericSeparator
} from "../src/index.mjs";

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

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

  assert.throws(
    () => {
      rawPlugin({
        assertVersion: (v) => {
          throw new Error(`Requires Babel ${v}`);
        }
      });
    },
    { message: "Requires Babel 7" }
  );
}

// Contract 2: Plugin factory returns a Babel plugin object named syntax-numeric-separator with a manipulateOptions hook
{
  const api = {
    assertVersion: () => {}
  };
  const pluginInstance = instantiatePlugin(api, {});
  assert.equal(pluginInstance.name, "syntax-numeric-separator");
  assert.equal(typeof pluginInstance.manipulateOptions, "function");
}

// Contract 3: manipulateOptions hook pushes numericSeparator into parser options plugins array
{
  const api = {
    assertVersion: () => {}
  };
  const pluginInstance = instantiatePlugin(api, {});
  const parserOpts = { plugins: [] };
  pluginInstance.manipulateOptions({}, parserOpts);
  assert.deepEqual(parserOpts.plugins, ["numericSeparator"]);
}

// Contract 4: manipulateOptions hook appends numericSeparator preserving existing parser plugins
{
  const api = {
    assertVersion: () => {}
  };
  const pluginInstance = instantiatePlugin(api, {});
  const parserOpts = { plugins: ["jsx", "typescript"] };
  pluginInstance.manipulateOptions({}, parserOpts);
  assert.deepEqual(parserOpts.plugins, ["jsx", "typescript", "numericSeparator"]);
}

// Contract 5: Module helper configureNumericSeparator returns updated parser options while preserving input immutability
{
  const initialOpts = { plugins: ["asyncGenerators"] };
  const updatedOpts = configureNumericSeparator(initialOpts);
  assert.deepEqual(updatedOpts.plugins, ["asyncGenerators", "numericSeparator"]);
  assert.deepEqual(initialOpts.plugins, ["asyncGenerators"]);

  const emptyOptsResult = configureNumericSeparator();
  assert.deepEqual(emptyOptsResult.plugins, ["numericSeparator"]);
}

console.log("All @babel/plugin-syntax-numeric-separator.default contract tests passed successfully.");

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