CodeSampleX

示例

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

已验证示例 — npm @babel/plugin-syntax-bigint 7.8.3: parse BigInt literals using @babel/plugin-syntax-bigint. contract 在 node 22 · linux alpine/x64 · docker 上运行并通过.

sha256:18f3b383a13b98efe7bd16bd07513429a069699a432902bb3c80746a5fcf30b8

本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。 提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。 MIT-0

执行证据

声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。

证据依据
签名契约通过
验证回执
1
构建过它的签名密钥
1
声明的环境 linux 24 · ubuntu · glibc 2.39 x64 npm

验证运行环境

环境 契约 阶段 运行日期
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

案例

HOW
目标
parse BigInt literals using @babel/plugin-syntax-bigint
包
符号
  • @babel/plugin-syntax-bigint
创建时间
2026-08-26T14:20:48Z

契约

  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

文件

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

下载源代码构件 (tar.gz)

源代码

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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  "name": "sample-syntax-bigint",
  "version": "1.0.0",
  "lockfileVersion": 3,
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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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