fast-uri 3.1.4: resolve

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.resolve in pkg:npm/fast-uri@3.1.4
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/fast-uri@3.1.4
Demonstrate these symbols/APIs:
  - fast-uri.resolve

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:sha256:829f887d516b9bf6647c9a29a3a0a83c10c31c26d1a0925b23d5127b734b0215","contract":["assert fastUri.resolve resolves relative paths with dot-segments against a base URI","assert fastUri.resolve resolves absolute-path references against a base URI","assert fastUri.resolve resolves query string references against a base URI","assert fastUri.resolve resolves fragment references against a base URI","assert fastUri.resolve resolves network-path protocol-relative references against a base URI","assert fastUri.resolveComponent preserves scheme from base component","assert fastUri.resolveComponent preserves host from base component","assert fastUri.resolveComponent resolves relative path against base component"],"goal":"verify fast-uri.resolve in pkg:npm/fast-uri@3.1.4","kind":"HOW","packages":["pkg:npm/fast-uri@3.1.4"],"schemaVersion":1,"symbols":["fast-uri.resolve"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"cjs","os":"linux","osVersionBucket":"24","packageManager":"npm","packageManagerVersion":"10.9.8","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/fast-uri@3.1.4"],"schemaVersion":1,"subject":"pkg:npm/fast-uri@3.1.4","symbols":["fast-uri.resolve"],"verifierAdapter":"node-typescript@1"}

const fastUri = require('fast-uri');

/**
 * Resolves a relative URI reference against a base URI string according to RFC 3986.
 *
 * @param {string} base - Base URI string.
 * @param {string} relative - Relative URI reference.
 * @param {Object} [options] - Optional URI resolution options.
 * @returns {string} The resolved URI string.
 */
function resolveUri(base, relative, options) {
  return fastUri.resolve(base, relative, options);
}

/**
 * Resolves a parsed relative URIComponent against a parsed base URIComponent.
 *
 * @param {Object} base - Parsed base URIComponent.
 * @param {Object} relative - Parsed relative URIComponent.
 * @param {Object} [options] - Optional resolution options.
 * @returns {Object} The resolved URIComponent object.
 */
function resolveComponent(base, relative, options) {
  return fastUri.resolveComponent(base, relative, options);
}

module.exports = {
  resolveUri,
  resolveComponent,
  resolve: fastUri.resolve,
  fastUri,
};

{
  "name": "sample-fast-uri-resolve",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-fast-uri-resolve",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "fast-uri": "3.1.4"
      }
    },
    "node_modules/fast-uri": {
      "version": "3.1.4",
      "resolved": "https://registry.npmjs.org/fast-uri/-/fast-uri-3.1.4.tgz",
      "integrity": "sha512-8JnbkQ4juDyvYs4mgFGQqg4yCYtFDtUtmp2QIQq11ZZe5CFQ5wcqm1rqDgAh/QdMySuBnPzMUiJUNZG5N/AiQw==",
      "funding": [
        {
          "type": "github",
          "url": "https://github.com/sponsors/fastify"
        },
        {
          "type": "opencollective",
          "url": "https://opencollective.com/fastify"
        }
      ],
      "license": "BSD-3-Clause"
    }
  }
}

{
  "name": "sample-fast-uri-resolve",
  "version": "1.0.0",
  "description": "Clean-room sample verifying fast-uri.resolve in pkg:npm/fast-uri@3.1.4",
  "main": "index.js",
  "license": "MIT-0",
  "dependencies": {
    "fast-uri": "3.1.4"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify fast-uri.resolve in pkg:npm/fast-uri@3.1.4",
  "kind": "HOW",
  "packages": [
    "pkg:npm/fast-uri@3.1.4"
  ],
  "symbols": [
    "fast-uri.resolve"
  ]
}

import assert from 'node:assert';
import fastUri from 'fast-uri';
import { resolveUri, resolveComponent } from '../index.js';

// 1. Resolves relative paths with dot-segments against a base URI
const relDot = resolveUri('http://example.com/a/b/c', '../d');
assert.strictEqual(
  relDot,
  'http://example.com/a/d',
  'assert fastUri.resolve resolves relative paths with dot-segments against a base URI'
);

// 2. Resolves absolute-path references against a base URI
const absPath = resolveUri('http://example.com/a/b/c', '/main/target');
assert.strictEqual(
  absPath,
  'http://example.com/main/target',
  'assert fastUri.resolve resolves absolute-path references against a base URI'
);

// 3. Resolves query string and fragment references against a base URI
const withQuery = resolveUri('http://example.com/a/b', '?filter=all');
assert.strictEqual(
  withQuery,
  'http://example.com/a/b?filter=all',
  'assert fastUri.resolve resolves query string references against a base URI'
);

const withFrag = resolveUri('http://example.com/a/b', '#section2');
assert.strictEqual(
  withFrag,
  'http://example.com/a/b#section2',
  'assert fastUri.resolve resolves fragment references against a base URI'
);

// 4. Resolves network-path protocol-relative references against a base URI
const netPath = resolveUri('http://example.com/a/b', '//other.example.com/c');
assert.strictEqual(
  netPath,
  'http://other.example.com/c',
  'assert fastUri.resolve resolves network-path protocol-relative references against a base URI'
);

// 5. Resolves parsed relative URIComponent against parsed base URIComponent
const baseComp = fastUri.parse('http://example.com/a/b');
const relComp = fastUri.parse('c');
const resolvedComp = resolveComponent(baseComp, relComp);
assert.strictEqual(
  resolvedComp.scheme,
  'http',
  'assert fastUri.resolveComponent preserves scheme from base component'
);
assert.strictEqual(
  resolvedComp.host,
  'example.com',
  'assert fastUri.resolveComponent preserves host from base component'
);
assert.strictEqual(
  resolvedComp.path,
  '/a/c',
  'assert fastUri.resolveComponent resolves relative path against base component'
);

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