init

packages/core/market/index.ts

@@ -0,0 +1,14 @@
+import {ApiResponse} from "./types";
+
+export async function collect_gainers_losers(x: { apiKey: string, limit: number }): Promise<ApiResponse> {
+    const { apiKey, limit } = x;
+
+    //
+    const data: ApiResponse = await fetch(`https://pro-api.coinmarketcap.com/v1/cryptocurrency/trending/gainers-losers?limit=${limit}`, {
+        headers: {
+            "x-cmc_pro_api_key": apiKey
+        }
+    }).then((symbolDataRequest) => symbolDataRequest.json());
+
+    return data;
+}

packages/core/market/types.ts

@@ -0,0 +1,48 @@
+type Quote = {
+    price: number;
+    volume_24h: number;
+    percent_change_1h: number;
+    percent_change_24h: number;
+    percent_change_7d: number;
+    market_cap: number;
+    last_updated: string;
+};
+
+type Platform = null;
+
+type Tag = string;
+
+type Data = {
+    id: number;
+    name: string;
+    symbol: string;
+    slug: string;
+    cmc_rank?: number;
+    num_market_pairs: number;
+    circulating_supply: number;
+    total_supply: number;
+    max_supply: number;
+    last_updated: string;
+    date_added: string;
+    tags: Tag[];
+    platform: Platform;
+    quote: {
+        USD: Quote;
+        BTC?: Quote;
+        ETH?: Quote;
+    };
+};
+
+type Status = {
+    timestamp: string;
+    error_code: number;
+    error_message: string | null;
+    elapsed: number;
+    credit_count: number;
+};
+
+export type ApiResponse = {
+    data: Data[];
+    status: Status;
+};
+