@hoangsonw/fast-fetch/__tests__/demo.js

A smarter fetch() wrapper with auto-retry, deduplication, and minimal boilerplate.

import { fastFetch } from "@hoangsonw/fast-fetch";

fastFetch("https://pokeapi.co/api/v2/pokemon/ditto", {
  retries: 2,
  retryDelay: 2000,
  deduplicate: true,
  shouldRetry: (errorOrResponse, attempt) => {
    console.log(`Retry attempt #${attempt}`);

    // If it's a Response object (failed request)
    if (errorOrResponse instanceof Response) {
      return errorOrResponse.status >= 500; // Retry on 5xx errors
    }

    // If it's a network or other error
    return true;
  },
})
  .then((res) => res.json())
  .then((data) => {
    console.log("FastFetch data:", data);
  })
  .catch((err) => {
    console.error("FastFetch error:", err);
  });

// Should output something like:
// [FastFetch] Starting request for: https://pokeapi.co/api/v2/pokemon/ditto
// [FastFetch] Attempt #1 for: https://pokeapi.co/api/v2/pokemon/ditto
// [FastFetch] Stored in-flight request with signature: {"url":"https://pokeapi.co/api/v2/pokemon/ditto","method":"GET","headers":{},"body":null}
// [FastFetch] Request succeeded on attempt #1
// [FastFetch] Removed in-flight record for signature: {"url":"https://pokeapi.co/api/v2/pokemon/ditto","method":"GET","headers":{},"body":null}
// FastFetch data: {
//   abilities: [
//     { ability: [Object], is_hidden: false, slot: 1 },
//     { ability: [Object], is_hidden: true, slot: 3 }
//   ],
//   base_experience: 101,
//   cries: {
//     latest: 'https://raw.githubusercontent.com/PokeAPI/cries/main/cries/pokemon/latest/132.ogg',
//     legacy: 'https://raw.githubusercontent.com/PokeAPI/cries/main/cries/pokemon/legacy/132.ogg'
//   },
//   forms: [
//     {
//       name: 'ditto',
//       url: 'https://pokeapi.co/api/v2/pokemon-form/132/'
//     }
//   ],
//   game_indices: [
//     { game_index: 76, version: [Object] },
//     { game_index: 76, version: [Object] },
//     { game_index: 76, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] },
//     { game_index: 132, version: [Object] }
//   ],
//   height: 3,
//   held_items: [
//     { item: [Object], version_details: [Array] },
//     { item: [Object], version_details: [Array] }
//   ],
//   id: 132,
//   is_default: true,
//   location_area_encounters: 'https://pokeapi.co/api/v2/pokemon/132/encounters',
//   moves: [ { move: [Object], version_group_details: [Array] } ],
//   name: 'ditto',
//   order: 214,
//   past_abilities: [],
//   past_types: [],
//   species: {
//     name: 'ditto',
//     url: 'https://pokeapi.co/api/v2/pokemon-species/132/'
//   },
//   sprites: {
//     back_default: 'https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/back/132.png',
//     back_female: null,
//     back_shiny: 'https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/back/shiny/132.png',
//     back_shiny_female: null,
//     front_default: 'https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/132.png',
//     front_female: null,
//     front_shiny: 'https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/shiny/132.png',
//     front_shiny_female: null,
//     other: {
//       dream_world: [Object],
//       home: [Object],
//       'official-artwork': [Object],
//       showdown: [Object]
//     },
//     versions: {
//       'generation-i': [Object],
//       'generation-ii': [Object],
//       'generation-iii': [Object],
//       'generation-iv': [Object],
//       'generation-v': [Object],
//       'generation-vi': [Object],
//       'generation-vii': [Object],
//       'generation-viii': [Object]
//     }
//   },
//   stats: [
//     { base_stat: 48, effort: 1, stat: [Object] },
//     { base_stat: 48, effort: 0, stat: [Object] },
//     { base_stat: 48, effort: 0, stat: [Object] },
//     { base_stat: 48, effort: 0, stat: [Object] },
//     { base_stat: 48, effort: 0, stat: [Object] },
//     { base_stat: 48, effort: 0, stat: [Object] }
//   ],
//   types: [ { slot: 1, type: [Object] } ],
//   weight: 40
// }