CodeSampleX

Beispiel

@babel/plugin-syntax-bigint 7.8.3: parse BigInt literals using @babel/plugin-syntax-bigint

Verifiziertes Beispiel für npm @babel/plugin-syntax-bigint 7.8.3: parse BigInt literals using @babel/plugin-syntax-bigint. Der Vertrag lief auf node 22 …

sha256:18f3b383a13b98efe7bd16bd07513429a069699a432902bb3c80746a5fcf30b8

Dieses Netzwerk bietet eine Sache: ein Sample, das baut. Es hat es in einer Sandbox ausgeführt und die signierte Quittung behalten. Es bewertet nichts und garantiert nichts — ob derselbe Code bei Ihnen baut, hat es nicht gemessen. Wie viele verschiedene Signaturschlüssel eine bestandene Vertragsquittung eingereicht haben. Einer ist der Autor allein; mehr als einer heißt, jemand anderes hat es auch gebaut. Ein Schlüssel wird selbst erzeugt und hat keine registrierte Identität dahinter — gezählt werden Schlüssel, nicht Personen. MIT-0

Ausführungsbelege

Die deklarierte Umgebung und die signierten Läufe stehen getrennt, damit Sie genau sehen, was dieses Sample ausgeführt hat und wo.

Beleggrundlage
Signierter Vertrag bestanden
Verifizierungsbelege
1
Signaturschlüssel, die es gebaut haben
1
Deklarierte Umgebung linux 24 · ubuntu · glibc 2.39 x64 npm

Umgebungen der Verifizierungsläufe

Umgebung Contract Stufen Lauf
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…		 2026-08-26

Fall

HOW
Ziel
parse BigInt literals using @babel/plugin-syntax-bigint
Pakete
Symbole
  • @babel/plugin-syntax-bigint
Erstellt
2026-08-26T14:20:48Z

Contract

  1. pluginSyntaxBigInt exports a declare plugin function registering syntax-bigint
  2. parses BigInt literals into BigIntLiteral AST nodes with value and raw representation
  3. parses BigInt literals in binary expressions and variable declarations without syntax errors
  4. parses BigInt literals in function return statements and array expressions

Dateien

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

Quellartefakt herunterladen (tar.gz)

Quelltext

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 BigInt literals using @babel/plugin-syntax-bigint
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-syntax-bigint@7.8.3
Demonstrate these symbols/APIs:
  - @babel/plugin-syntax-bigint

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:afc30327c5edbc4dad62bf33799f5c3fa046498b376086010e2aa68c93db218c","contract":["pluginSyntaxBigInt exports a declare plugin function registering syntax-bigint","parses BigInt literals into BigIntLiteral AST nodes with value and raw representation","parses BigInt literals in binary expressions and variable declarations without syntax errors","parses BigInt literals in function return statements and array expressions"],"goal":"parse BigInt literals using @babel/plugin-syntax-bigint","kind":"HOW","packages":["pkg:npm/%40babel/plugin-syntax-bigint@7.8.3"],"schemaVersion":1,"symbols":["@babel/plugin-syntax-bigint"]},"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-bigint@7.8.3"],"schemaVersion":1,"subject":"pkg:npm/%40babel/plugin-syntax-bigint@7.8.3","symbols":["@babel/plugin-syntax-bigint"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "sample-syntax-bigint",
  "version": "1.0.0",
  "type": "module",
  "dependencies": {
    "@babel/core": "^7.26.0",
    "@babel/plugin-syntax-bigint": "7.8.3"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "parse BigInt literals using @babel/plugin-syntax-bigint",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-syntax-bigint@7.8.3"
  ],
  "symbols": [
    "@babel/plugin-syntax-bigint"
  ]
}
src/index.mjs
import { parseSync, transformSync } from "@babel/core";
import _pluginSyntaxBigInt from "@babel/plugin-syntax-bigint";

const pluginSyntaxBigInt = _pluginSyntaxBigInt?.default ?? _pluginSyntaxBigInt;

/**
 * Parses JavaScript code containing BigInt literals into an AST.
 * @param {string} code - Source JavaScript code.
 * @returns {object} - Babel AST program node.
 */
export function parseWithBigInt(code) {
  const result = parseSync(code, {
    plugins: [pluginSyntaxBigInt],
    configFile: false,
    babelrc: false,
  });
  return result?.program ?? null;
}

/**
 * Transforms JavaScript code using @babel/plugin-syntax-bigint.
 * @param {string} code - Source JavaScript code.
 * @param {object} [options] - Plugin configuration options.
 * @returns {string} - Transformed code string.
 */
export function transformWithBigInt(code, options = {}) {
  const result = transformSync(code, {
    plugins: [[pluginSyntaxBigInt, options]],
    configFile: false,
    babelrc: false,
  });
  return result?.code ?? "";
}

export { pluginSyntaxBigInt };
test/contract.mjs
import assert from "node:assert/strict";
import { parseWithBigInt, transformWithBigInt, pluginSyntaxBigInt } from "../src/index.mjs";

// Assertion 1: Plugin export verification
assert.equal(typeof pluginSyntaxBigInt, "function", "pluginSyntaxBigInt must be a function");

// Assertion 2: Parses BigInt literals into BigIntLiteral AST nodes
{
  const code = "const largeNumber = 9007199254740991n;";
  const program = parseWithBigInt(code);
  assert.ok(program, "AST program should be generated");
  assert.equal(program.body.length, 1, "Program should have 1 statement");

  const declaration = program.body[0];
  assert.equal(declaration.type, "VariableDeclaration", "Statement should be VariableDeclaration");
  const init = declaration.declarations[0].init;
  assert.equal(init.type, "BigIntLiteral", "Literal should be identified as BigIntLiteral");
  assert.equal(init.value, "9007199254740991", "BigInt literal value should match numeric string");
  assert.equal(init.extra?.raw, "9007199254740991n", "BigInt literal extra.raw should preserve source text");
}

// Assertion 3: Enables parsing of BigInt literals in expressions and returns valid code
{
  const code = "const result = 100n + 200n;";
  const transformed = transformWithBigInt(code);
  assert.ok(transformed.includes("100n + 200n"), "Transformed code should preserve BigInt expressions");

  const program = parseWithBigInt(code);
  const binaryExpr = program.body[0].declarations[0].init;
  assert.equal(binaryExpr.type, "BinaryExpression", "Expression should be BinaryExpression");
  assert.equal(binaryExpr.left.type, "BigIntLiteral", "Left operand should be BigIntLiteral");
  assert.equal(binaryExpr.right.type, "BigIntLiteral", "Right operand should be BigIntLiteral");
  assert.equal(binaryExpr.left.value, "100", "Left value should be 100");
  assert.equal(binaryExpr.right.value, "200", "Right value should be 200");
}

// Assertion 4: BigInt in function return and array literals
{
  const code = "function getBig() { return [1n, 2n, 3n]; }";
  const program = parseWithBigInt(code);
  const fnDecl = program.body[0];
  assert.equal(fnDecl.type, "FunctionDeclaration", "Statement should be FunctionDeclaration");
  const returnStmt = fnDecl.body.body[0];
  assert.equal(returnStmt.type, "ReturnStatement", "Function body should have ReturnStatement");
  const arrayExpr = returnStmt.argument;
  assert.equal(arrayExpr.type, "ArrayExpression", "Return argument should be ArrayExpression");
  assert.equal(arrayExpr.elements.length, 3, "Array should have 3 elements");
  assert.equal(arrayExpr.elements[0].type, "BigIntLiteral");
  assert.equal(arrayExpr.elements[0].value, "1");
}

console.log("All contract tests passed successfully.");

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