CodeSampleX

Exemple

@babel/plugin-syntax-numeric-separator 7.10.4: parse numeric separator syntax with babel plugin

Échantillon vérifié pour npm @babel/plugin-syntax-numeric-separator 7.10.4: parse numeric separator syntax with babel plugin. Le contrat s'est exécuté sur…

sha256:e3c309fff3bff42855695c367ecba71973f0e7cf510efd81cc73a2d77a8123dd

Ce réseau offre une seule chose : un échantillon qui compile. Il l'a exécuté dans un bac à sable et conservé le reçu signé. Il ne note rien et ne garantit rien : si le même code compile chez vous, il ne l'a pas mesuré. Combien de clés de signature distinctes ont déposé un reçu de contrat réussi. Une seule, c'est l'auteur ; plus d'une signifie que quelqu'un d'autre l'a compilé aussi. Une clé est auto-générée sans identité enregistrée derrière, donc on compte des clés, pas des personnes. MIT-0

Preuves d'exécution

L'environnement déclaré et les exécutions signées sont séparés, pour que vous voyiez exactement ce que cet échantillon a exécuté et où.

Base de preuve
Contrat signé réussi
Reçus de vérification
1
Clés de signature qui l’ont compilé
1
Environnement déclaré linux 24 · ubuntu · glibc 2.39 x64 npm

Environnements des exécutions de vérification

Environnement Contrat Étapes Exécution
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

Cas

HOW
Objectif
parse numeric separator syntax with babel plugin
Paquets
Créé
2026-08-27T21:33:10Z

Contrat

  1. Plugin default export is a function factory asserting Babel 7 compatibility
  2. Plugin factory returns an object named syntax-numeric-separator with a manipulateOptions hook
  3. manipulateOptions pushes numericSeparator into parser options plugins array
  4. manipulateOptions appends numericSeparator to existing plugins list without removing other plugins
  5. Module helper enableNumericSeparator returns updated parser options while preserving input immutability

Fichiers

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

Télécharger l’artefact source (tar.gz)

Code 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: parse numeric separator syntax with babel plugin
Kind: HOW

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

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
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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": "parse numeric separator syntax with babel plugin",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-syntax-numeric-separator@7.10.4"
  ]
}
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 enableNumericSeparator(parserOpts = {}) {
  const plugins = parserOpts.plugins || [];
  const normalizedParserOpts = { ...parserOpts, plugins: [...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,
  enableNumericSeparator
} 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);
}

// Contract 2: Plugin factory returns an 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 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 appends numericSeparator to existing plugins list without removing other 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 enableNumericSeparator returns updated parser options while preserving input immutability
{
  const initialOpts = { plugins: ["asyncGenerators"] };
  const updatedOpts = enableNumericSeparator(initialOpts);
  assert.deepEqual(updatedOpts.plugins, ["asyncGenerators", "numericSeparator"]);
  assert.deepEqual(initialOpts.plugins, ["asyncGenerators"]);

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

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

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