Fix build typings and default API URL

[slegarraga]

Summary

• add Node ambient types so tsc can resolve the package's process and fetch globals
• make getConfig() use the documented https://api.hashlock.markets default when HASHLOCK_API_URL is not set
• keep HASHLOCK_API_KEY required

Before this change, npm run build fails with TS2580 for process and TS2304 for fetch.

Validation

• npm install --no-package-lock
• npm run build
• HASHLOCK_API_KEY=test node -e "const { getConfig } = require('./dist/index.js'); const cfg = getConfig(); console.log(JSON.stringify(cfg));"

Summary by CodeRabbit

• New Features

  • API URL configuration is now optional and defaults to https://api.hashlock.markets when not provided
  • Configuration simplified—only API key is required

• Chores

  • Added TypeScript type definitions support for Node.js environments

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 0f5ac88e-675b-4754-96d8-90fea7546e2c

📥 Commits

Reviewing files that changed from the base of the PR and between b8869d7 and bb8ec93.

📒 Files selected for processing (2)

• package.json
• src/index.ts

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📝 Walkthrough

Walkthrough

This PR adds a default API URL fallback to the SDK configuration, relaxes validation to require only an API key, and explicitly exports the public configuration type and functions. It also adds TypeScript node type definitions to development dependencies.

Changes

SDK Configuration and API Surface

Layer / File(s)	Summary
Configuration defaults and public API src/index.ts	getConfig defaults apiUrl to https://api.hashlock.markets when not provided and validates only apiKey presence. Module exports HashlockConfig type alongside hashlockPost and getConfig functions.
Development dependencies package.json	@types/node added to devDependencies for TypeScript node runtime type support.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 A default URL hops into place,
Validation now checks just one case,
The exports shine bright,
Types added just right,
The SDK finds its happy space! 🎯

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Fix build typings and default API URL' accurately summarizes the main changes: adding Node types and setting a default API URL.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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