@types/estree 1.0.9: types

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 @types/estree.types in pkg:npm/%40types/estree@1.0.9
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40types/estree@1.0.9
Demonstrate these symbols/APIs:
  - @types/estree.types

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.

{"case":{"caseId":"case:sha256:eed6880e8b33d074f565dd1775511884a8c7a36a0db4f36940fe4100a226c962","contract":["@types/estree package.json points types field to index.d.ts with version 1.0.9","@types/estree index.d.ts declares NodeMap, ExpressionMap, and fundamental AST node type unions","@types/estree index.d.ts declares statement and declaration node interfaces including FunctionDeclaration and VariableDeclaration","@types/estree index.d.ts declares expression interfaces including MemberExpression, CallExpression, and ArrowFunctionExpression","@types/estree index.d.ts declares pattern and class interfaces including ObjectPattern, ArrayPattern, and ClassDeclaration","@types/estree index.d.ts declares ES module AST types including ImportDeclaration and ExportNamedDeclaration with attributes"],"goal":"verify @types/estree.types in pkg:npm/%40types/estree@1.0.9","kind":"HOW","packages":["pkg:npm/%40types/estree@1.0.9"],"schemaVersion":1,"symbols":["@types/estree.types"]},"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/%40types/estree@1.0.9"],"schemaVersion":1,"subject":"pkg:npm/%40types/estree@1.0.9","symbols":["@types/estree.types"],"verifierAdapter":"node-typescript@1"}

{
  "name": "sample-types-estree-types",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-types-estree-types",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "@types/estree": "1.0.9"
      }
    },
    "node_modules/@types/estree": {
      "version": "1.0.9",
      "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.9.tgz",
      "integrity": "sha512-GhdPgy1el4/ImP05X05Uw4cw2/M93BCUmnEvWZNStlCzEKME4Fkk+YpoA5OiHNQmoS7Cafb8Xa3Pya8m1Qrzeg==",
      "license": "MIT"
    }
  }
}

{
  "name": "sample-types-estree-types",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "license": "MIT-0",
  "dependencies": {
    "@types/estree": "1.0.9"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify @types/estree.types in pkg:npm/%40types/estree@1.0.9",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40types/estree@1.0.9"
  ],
  "symbols": [
    "@types/estree.types"
  ]
}

import assert from 'node:assert/strict';
import fs from 'node:fs';
import { createRequire } from 'node:module';

const require = createRequire(import.meta.url);

// 1. @types/estree package.json points types field to index.d.ts with version 1.0.9
const pkgJson = require('@types/estree/package.json');
assert.equal(pkgJson.name, '@types/estree');
assert.equal(pkgJson.version, '1.0.9');
assert.equal(pkgJson.types, 'index.d.ts');

const dtsPath = require.resolve('@types/estree/index.d.ts');
assert.ok(fs.existsSync(dtsPath));
const dtsContent = fs.readFileSync(dtsPath, 'utf8');

// 2. @types/estree index.d.ts declares NodeMap, ExpressionMap, and fundamental AST node type unions
assert.ok(dtsContent.includes('export interface NodeMap {'));
assert.ok(dtsContent.includes('export type Node = NodeMap[keyof NodeMap];'));
assert.ok(dtsContent.includes('export interface ExpressionMap {'));
assert.ok(dtsContent.includes('export type Expression = ExpressionMap[keyof ExpressionMap];'));
assert.ok(dtsContent.includes('export type Statement ='));
assert.ok(dtsContent.includes('export type Pattern ='));

// 3. @types/estree index.d.ts declares statement and declaration node interfaces including FunctionDeclaration and VariableDeclaration
assert.ok(dtsContent.includes('export interface FunctionDeclaration extends MaybeNamedFunctionDeclaration {'));
assert.ok(dtsContent.includes('export interface VariableDeclaration extends BaseDeclaration {'));
assert.ok(dtsContent.includes('export interface IfStatement extends BaseStatement {'));
assert.ok(dtsContent.includes('export interface TryStatement extends BaseStatement {'));

// 4. @types/estree index.d.ts declares expression interfaces including MemberExpression, CallExpression, and ArrowFunctionExpression
assert.ok(dtsContent.includes('export interface MemberExpression extends BaseExpression, BasePattern {'));
assert.ok(dtsContent.includes('export type CallExpression = SimpleCallExpression | NewExpression;'));
assert.ok(dtsContent.includes('export interface ArrowFunctionExpression extends BaseExpression, BaseFunction {'));
assert.ok(dtsContent.includes('export interface AwaitExpression extends BaseExpression {'));

// 5. @types/estree index.d.ts declares pattern and class interfaces including ObjectPattern, ArrayPattern, and ClassDeclaration
assert.ok(dtsContent.includes('export interface ObjectPattern extends BasePattern {'));
assert.ok(dtsContent.includes('export interface ArrayPattern extends BasePattern {'));
assert.ok(dtsContent.includes('export interface ClassDeclaration extends MaybeNamedClassDeclaration {'));
assert.ok(dtsContent.includes('export interface MethodDefinition extends BaseNode {'));

// 6. @types/estree index.d.ts declares ES module AST types including ImportDeclaration and ExportNamedDeclaration with attributes
assert.ok(dtsContent.includes('export interface ImportDeclaration extends BaseModuleDeclaration {'));
assert.ok(dtsContent.includes('export interface ImportAttribute extends BaseNode {'));
assert.ok(dtsContent.includes('export interface ExportNamedDeclaration extends BaseModuleDeclaration {'));
assert.ok(dtsContent.includes('export interface ExportDefaultDeclaration extends BaseModuleDeclaration {'));

console.log('All @types/estree.types contract tests passed.');