@papack/client

Minimal HTTP client utilities for the browser.

Provides exactly two primitives:

• call - JSON-first POST requests with predictable error handling
• sse - thin wrapper around EventSource

No abstractions beyond what the platform already gives you.

Install

npm install @papack/client

API

call

Typed POST request helper.

import { call } from "@papack/client";

const result = await call<User>("/api/user", { id: 1 });

Behavior

• Always uses POST
• Automatically sets Content-Type: application/json
• Merges custom fetch options
• Sends data as JSON (if provided)
• Reads response as text first
• Parses JSON when possible
• Falls back to raw text

Error handling

• Non-OK responses throw the response body (text) if available
• Network or parsing failures throw string errors
• No wrapped error objects
• No silent failures

You either get a value or a thrown error.

sse

Thin wrapper around EventSource.

import { sse } from "@papack/client";

const events = sse("/api/events");

events.onmessage = (e) => {
  console.log(e.data);
};