fast-uri 3.1.9: parse

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 fast-uri.parse in pkg:npm/fast-uri@3.1.9
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/fast-uri@3.1.9
Demonstrate these symbols/APIs:
  - fast-uri.parse

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:sha256:4d0398b08984496abb031934933f79b814feea95c1da6bed1777d35f5104f8ed","contract":["fastUri.parse extracts scheme, host, port, path, query, and fragment from an absolute URI","fastUri.parse extracts userinfo and host from network-path authority","fastUri.parse parses relative path and query without scheme or host","fastUri.parse parses IPv6 host and port","fastUri.parse parses URN scheme with nid and nss","fastUri.parse parses URN UUID scheme with uuid property","fastUri.parse parses empty string as same-document reference with empty path","fastUri.parse sets error property on malformed URI authority"],"goal":"verify fast-uri.parse in pkg:npm/fast-uri@3.1.9","kind":"HOW","packages":["pkg:npm/fast-uri@3.1.9"],"schemaVersion":1,"symbols":["fast-uri.parse"]},"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/fast-uri@3.1.9"],"schemaVersion":1,"subject":"pkg:npm/fast-uri@3.1.9","symbols":["fast-uri.parse"],"verifierAdapter":"node-typescript@1"}

{
  "name": "fast-uri-parse-verification",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "fast-uri-parse-verification",
      "version": "1.0.0",
      "dependencies": {
        "fast-uri": "3.1.9"
      }
    },
    "node_modules/fast-uri": {
      "version": "3.1.9",
      "resolved": "https://registry.npmjs.org/fast-uri/-/fast-uri-3.1.9.tgz",
      "integrity": "sha512-hS/0Wt3Ya043oKXs0sIxrMpKQITXhMLIrVAKKXi4gozGC9v7YRWVnXIZzjNPTO02M9BdxLCWqK1yRXgNziVyJQ==",
      "funding": [
        {
          "type": "github",
          "url": "https://github.com/sponsors/fastify"
        },
        {
          "type": "opencollective",
          "url": "https://opencollective.com/fastify"
        }
      ],
      "license": "BSD-3-Clause"
    }
  }
}

{
  "name": "fast-uri-parse-verification",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification of fast-uri.parse",
  "dependencies": {
    "fast-uri": "3.1.9"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify fast-uri.parse in pkg:npm/fast-uri@3.1.9",
  "kind": "HOW",
  "packages": [
    "pkg:npm/fast-uri@3.1.9"
  ],
  "symbols": [
    "fast-uri.parse"
  ]
}

import assert from 'node:assert';
import uri from 'fast-uri';

// 1. fastUri.parse extracts scheme, host, port, path, query, and fragment from an absolute URI
const full = uri.parse('https://example.com:8080/api/v1/resource?filter=active&sort=desc#section-2');
assert.strictEqual(full.scheme, 'https');
assert.strictEqual(full.host, 'example.com');
assert.strictEqual(full.port, 8080);
assert.strictEqual(full.path, '/api/v1/resource');
assert.strictEqual(full.query, 'filter=active&sort=desc');
assert.strictEqual(full.fragment, 'section-2');
assert.strictEqual(full.reference, 'uri');

// 2. fastUri.parse extracts userinfo and host from network-path authority
const auth = uri.parse('//user:info@example.com/assets/app.js');
assert.strictEqual(auth.scheme, undefined);
assert.strictEqual(auth.userinfo, 'user:info');
assert.strictEqual(auth.host, 'example.com');
assert.strictEqual(auth.path, '/assets/app.js');
assert.strictEqual(auth.reference, 'relative');

// 3. fastUri.parse parses relative path and query without scheme or host
const rel = uri.parse('/search?q=test#top');
assert.strictEqual(rel.scheme, undefined);
assert.strictEqual(rel.userinfo, undefined);
assert.strictEqual(rel.host, undefined);
assert.strictEqual(rel.port, undefined);
assert.strictEqual(rel.path, '/search');
assert.strictEqual(rel.query, 'q=test');
assert.strictEqual(rel.fragment, 'top');
assert.strictEqual(rel.reference, 'relative');

// 4. fastUri.parse parses IPv6 host and port
const v6 = uri.parse('http://[2001:db8::1]:8080/status');
assert.strictEqual(v6.scheme, 'http');
assert.strictEqual(v6.host, '2001:db8::1');
assert.strictEqual(v6.port, 8080);
assert.strictEqual(v6.path, '/status');

// 5. fastUri.parse parses URN scheme with nid and nss
const urn = uri.parse('urn:isbn:0451450523');
assert.strictEqual(urn.scheme, 'urn');
assert.strictEqual(urn.nid, 'isbn');
assert.strictEqual(urn.nss, '0451450523');
assert.strictEqual(urn.reference, 'absolute');

// 6. fastUri.parse parses URN UUID scheme with uuid property
const uuidUrn = uri.parse('urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6');
assert.strictEqual(uuidUrn.scheme, 'urn');
assert.strictEqual(uuidUrn.nid, 'uuid');
assert.strictEqual(uuidUrn.uuid, 'f81d4fae-7dec-11d0-a765-00a0c91e6bf6');

// 7. fastUri.parse parses empty string as same-document reference with empty path
const empty = uri.parse('');
assert.strictEqual(empty.scheme, undefined);
assert.strictEqual(empty.path, '');
assert.strictEqual(empty.reference, 'same-document');

// 8. fastUri.parse sets error property on malformed URI authority
const malformed = uri.parse('http://example.com:notaport/');
assert.strictEqual(typeof malformed.error, 'string');
assert.ok(malformed.error.length > 0);

console.log('Contract passed');