Error Recovery Pattern

import { Boundary, RateLimitError, AuthError, NetworkError } from "boundary-sdk";

const boundary = new Boundary({
  github: { auth: { token: process.env.GITHUB_TOKEN } }
});

async function fetchUserWithRetry(username: string, maxRetries = 3) {
  for (let attempt = 0; attempt < maxRetries; attempt++) {
    try {
      const { data } = await boundary.github.get(`/users/${username}`);
      return data;
      
    } catch (error) {
      if (error instanceof RateLimitError) {
        // Boundary gives you the exact reset time
        const waitTime = error.resetAt.getTime() - Date.now();
        console.log(`Rate limited. Waiting ${waitTime}ms...`);
        await new Promise(resolve => setTimeout(resolve, waitTime));
        continue;
      }
      
      if (error instanceof AuthError) {
        console.error("Authentication failed. Check your token.");
        throw error;
      }
      
      if (error instanceof NetworkError && attempt < maxRetries - 1) {
        console.log(`Network error. Retrying (${attempt + 1}/${maxRetries})...`);
        await new Promise(resolve => setTimeout(resolve, 1000 * (attempt + 1)));
        continue;
      }
      
      throw error;
    }
  }
}