CodeSampleX

Beispiel

@babel/core 7.29.7: template

Verifiziertes Beispiel für npm @babel/core 7.29.7: template. Der Vertrag lief auf node 22 · linux alpine/x64 · docker und bestand.

sha256:2801dcfb4033c2e5d1b62341fdbbf90486340149a24d938ba7ac4f4771dce1ad

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…		 2026-08-23

Fall

HOW
Ziel
verify @babel/core.template in pkg:npm/%40babel/core@7.29.7
Pakete
Symbole
  • @babel/core.template
Erstellt
2026-08-23T06:26:43Z

Contract

  1. babel.template creates template functions that replace uppercase placeholder identifiers with provided AST nodes or identifiers, returning Statement AST nodes by default
  2. babel.template.ast directly parses code strings into AST nodes without requiring template invocation or placeholder substitution
  3. babel.template.expression generates Expression AST nodes from template strings with placeholder substitutions
  4. babel.template.statements parses multi-statement templates into an array of Statement AST nodes
  5. babel.template.program creates a complete Program AST node from template strings
  6. babel.template supports syntacticPlaceholders option for %%placeholder%% style token replacements
  7. babel.template functions throw an error when invalid template strings are parsed

Dateien

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

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: verify @babel/core.template in pkg:npm/%40babel/core@7.29.7
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/core@7.29.7
Demonstrate these symbols/APIs:
  - @babel/core.template

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:sha256:8bae61204feb43103e47c83650cd32e68cddfd7f303c0e5441d950579b5ccf19","contract":["babel.template creates template functions that replace uppercase placeholder identifiers with provided AST nodes or identifiers, returning Statement AST nodes by default","babel.template.ast directly parses code strings into AST nodes without requiring template invocation or placeholder substitution","babel.template.expression generates Expression AST nodes from template strings with placeholder substitutions","babel.template.statements parses multi-statement templates into an array of Statement AST nodes","babel.template.program creates a complete Program AST node from template strings","babel.template supports syntacticPlaceholders option for %%placeholder%% style token replacements","babel.template functions throw an error when invalid template strings are parsed"],"goal":"verify @babel/core.template in pkg:npm/%40babel/core@7.29.7","kind":"HOW","packages":["pkg:npm/%40babel/core@7.29.7"],"schemaVersion":1,"symbols":["@babel/core.template"]},"contractCommand":["node","test/contract.js"],"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/core@7.29.7"],"schemaVersion":1,"subject":"pkg:npm/%40babel/core@7.29.7","symbols":["@babel/core.template"],"verifierAdapter":"node-typescript@1"}
package-lock.json
{
  "name": "sample-babel-template",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-babel-template",
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    },
    "node_modules/@babel/code-frame": {
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      "license": "MIT",
      "dependencies": {
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        "js-tokens": "^4.0.0",
        "picocolors": "^1.1.1"
      },
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package.json
{
  "name": "sample-babel-template",
  "version": "1.0.0",
  "description": "verify @babel/core.template in pkg:npm/%40babel/core@7.29.7",
  "main": "src/index.js",
  "scripts": {
    "test": "node test/contract.js"
  },
  "dependencies": {
    "@babel/core": "7.29.7"
  },
  "license": "MIT-0"
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify @babel/core.template in pkg:npm/%40babel/core@7.29.7",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/core@7.29.7"
  ],
  "symbols": [
    "@babel/core.template"
  ]
}
src/index.js
const babel = require('@babel/core');

/**
 * Builds a function declaration AST node using babel.template.
 *
 * @param {string} functionName - The identifier name for the function.
 * @param {string} paramName - The identifier name for the parameter.
 * @returns {object} The FunctionDeclaration AST node.
 */
function buildFunction(functionName, paramName) {
  const fnTemplate = babel.template(`
    function FUNCTION_NAME(PARAM) {
      return PARAM * 2;
    }
  `);
  return fnTemplate({
    FUNCTION_NAME: babel.types.identifier(functionName),
    PARAM: babel.types.identifier(paramName)
  });
}

/**
 * Directly parses a source code string into an AST node using babel.template.ast.
 *
 * @param {string} code - The JavaScript source code.
 * @returns {object} The parsed AST node.
 */
function parseAst(code) {
  return babel.template.ast(code);
}

/**
 * Builds an expression AST node using babel.template.expression.
 *
 * @param {string} exprCode - The expression code template.
 * @param {object} [replacements={}] - Placeholder replacement mapping.
 * @returns {object} The Expression AST node.
 */
function buildExpression(exprCode, replacements = {}) {
  const exprTemplate = babel.template.expression(exprCode);
  return exprTemplate(replacements);
}

/**
 * Builds an array of statement AST nodes using babel.template.statements.
 *
 * @param {string} statementsCode - The multi-statement code template.
 * @param {object} [replacements={}] - Placeholder replacement mapping.
 * @returns {Array<object>} Array of Statement AST nodes.
 */
function buildStatements(statementsCode, replacements = {}) {
  const stmtsTemplate = babel.template.statements(statementsCode);
  return stmtsTemplate(replacements);
}

/**
 * Builds a Program AST node using babel.template.program.
 *
 * @param {string} code - The code template.
 * @param {object} [replacements={}] - Placeholder replacement mapping.
 * @returns {object} The Program AST node.
 */
function buildProgram(code, replacements = {}) {
  const programTemplate = babel.template.program(code);
  return programTemplate(replacements);
}

/**
 * Builds an AST node using syntactic placeholders (%%name%%).
 *
 * @param {string} templateCode - The code template using %%name%% syntax.
 * @param {object} replacements - Placeholder replacement mapping.
 * @returns {object} The resulting AST node.
 */
function buildWithSyntacticPlaceholders(templateCode, replacements) {
  const templateFn = babel.template(templateCode, {
    syntacticPlaceholders: true
  });
  return templateFn(replacements);
}

module.exports = {
  buildFunction,
  parseAst,
  buildExpression,
  buildStatements,
  buildProgram,
  buildWithSyntacticPlaceholders
};
test/contract.js
const assert = require('assert');
const babel = require('@babel/core');
const {
  buildFunction,
  parseAst,
  buildExpression,
  buildStatements,
  buildProgram,
  buildWithSyntacticPlaceholders
} = require('../src/index');

// 1. babel.template creates template functions that replace uppercase placeholder identifiers with provided AST nodes or identifiers, returning Statement AST nodes by default
{
  const ast = buildFunction('doubleValue', 'num');
  assert(ast !== null && typeof ast === 'object', 'AST must be an object');
  assert.strictEqual(ast.type, 'FunctionDeclaration', 'Result node must be a FunctionDeclaration');
  assert.strictEqual(ast.id.name, 'doubleValue', 'Function name placeholder must be replaced');
  assert.strictEqual(ast.params.length, 1, 'Function must have 1 parameter');
  assert.strictEqual(ast.params[0].name, 'num', 'Parameter name placeholder must be replaced');
  assert.strictEqual(ast.body.type, 'BlockStatement', 'Function body must be BlockStatement');
}

// 2. babel.template.ast directly parses code strings into AST nodes without requiring template invocation or placeholder substitution
{
  const ast = parseAst('const answer = 42;');
  assert(ast !== null && typeof ast === 'object', 'AST must be an object');
  assert.strictEqual(ast.type, 'VariableDeclaration', 'Directly parsed node must be a VariableDeclaration');
  assert.strictEqual(ast.kind, 'const');
  assert.strictEqual(ast.declarations[0].id.name, 'answer');
  assert.strictEqual(ast.declarations[0].init.value, 42);
}

// 3. babel.template.expression generates Expression AST nodes from template strings with placeholder substitutions
{
  const exprAst = buildExpression('LEFT + RIGHT * 2', {
    LEFT: babel.types.identifier('base'),
    RIGHT: babel.types.numericLiteral(10)
  });
  assert(exprAst !== null && typeof exprAst === 'object', 'Expression AST must be an object');
  assert.strictEqual(exprAst.type, 'BinaryExpression', 'Expression must be a BinaryExpression');
  assert.strictEqual(exprAst.operator, '+');
  assert.strictEqual(exprAst.left.type, 'Identifier');
  assert.strictEqual(exprAst.left.name, 'base');
  assert.strictEqual(exprAst.right.type, 'BinaryExpression');
}

// 4. babel.template.statements parses multi-statement templates into an array of Statement AST nodes
{
  const statements = buildStatements(`
    const first = 1;
    const second = 2;
  `);
  assert(Array.isArray(statements), 'Statements result must be an array');
  assert.strictEqual(statements.length, 2, 'Must produce exactly 2 statements');
  assert.strictEqual(statements[0].type, 'VariableDeclaration');
  assert.strictEqual(statements[0].declarations[0].id.name, 'first');
  assert.strictEqual(statements[1].type, 'VariableDeclaration');
  assert.strictEqual(statements[1].declarations[0].id.name, 'second');
}

// 5. babel.template.program creates a complete Program AST node from template strings
{
  const programAst = buildProgram('const x = VALUE;', {
    VALUE: babel.types.numericLiteral(100)
  });
  assert(programAst !== null && typeof programAst === 'object', 'Program AST must be an object');
  assert.strictEqual(programAst.type, 'Program', 'Result must be a Program AST node');
  assert.strictEqual(programAst.body.length, 1);
  assert.strictEqual(programAst.body[0].type, 'VariableDeclaration');
}

// 6. babel.template supports syntacticPlaceholders option for %%placeholder%% style token replacements
{
  const ast = buildWithSyntacticPlaceholders('const %%varName%% = %%initVal%%;', {
    varName: babel.types.identifier('result'),
    initVal: babel.types.stringLiteral('success')
  });
  assert(ast !== null && typeof ast === 'object', 'AST must be an object');
  assert.strictEqual(ast.type, 'VariableDeclaration');
  assert.strictEqual(ast.declarations[0].id.name, 'result');
  assert.strictEqual(ast.declarations[0].init.type, 'StringLiteral');
  assert.strictEqual(ast.declarations[0].init.value, 'success');
}

// 7. babel.template functions throw an error when invalid template strings are parsed
{
  assert.throws(
    () => {
      babel.template('const = ;')();
    },
    (err) => {
      return err instanceof Error;
    },
    'Invalid template string must throw an Error'
  );
}

console.log('All contract assertions passed successfully.');

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