feat: crypto-cli

.gitignore

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+dist
+node_modules
+yarn-error.log
+package-lock.json
+
+.vscode

.prettierrc.json

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+{
+  "semi": true,
+  "singleQuote": true,
+  "printWidth": 80,
+  "bracketSpacing": true,
+  "useTabs": false,
+  "trailingComma": "none",
+  "arrowParens": "avoid"
+}

package.json

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+{
+  "name": "crypto-cli",
+  "version": "1.0.0",
+  "description": "Cryptocurrency CLI price tool",
+  "main": "index.ts",
+  "repository": "https://github.com/zidious/crypto-cli",
+  "author": "Gabe Olesen",
+  "license": "MIT",
+  "scripts": {
+    "build": "yarn tsc"
+  },
+  "engines": {
+    "node": "16"
+  },
+  "devDependencies": {
+    "@crypto-coffee/coingecko-api": "^1.1.0",
+    "@types/node": "^18.0.3",
+    "chalk": "4.1.2",
+    "meow": "9",
+    "prettier": "^2.7.1",
+    "ts-node": "^10.8.2",
+    "typescript": "^4.7.4"
+  }
+}

src/actions.ts

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+import CoinGeckoAPI from '@crypto-coffee/coingecko-api';
+import { logError, logSuccess, format } from './utils';
+
+interface Flags {
+  price: string[];
+}
+
+interface CoinMarketResponse {
+  id: string;
+  symbol: string;
+  name: string;
+  image: string;
+  current_price: number;
+  market_cap: number;
+  market_cap_rank: number;
+  fully_diluted_valuation: number;
+  total_volume: number;
+  high_24h: number;
+  low_24h: number;
+  price_change_24h: number;
+  price_change_percentage_24h: number;
+  market_cap_change_24h: number;
+  market_cap_change_percentage_24h: number;
+  circulating_supply: number;
+  total_supply: number;
+  max_supply: number;
+  ath: number;
+  ath_change_percentage: number;
+  ath_date: string;
+  atl: number;
+  atl_change_percentage: number;
+  atl_date: string;
+  roi: unknown;
+  last_updated: string;
+}
+
+export const app = async (coffee: string, flags: Record<string, unknown>) => {
+  const coffeeParsed = coffee.toLowerCase();
+
+  if (coffeeParsed !== 'coffee') {
+    logError(`Unknown command: ${coffee}`);
+  }
+
+  const gecko = new CoinGeckoAPI();
+
+  const { price } = flags as unknown as Flags;
+
+  if (price.length) {
+    try {
+      const result: CoinMarketResponse[] = await gecko.coinMarkets({
+        vs_currency: 'usd',
+        ids: price.toString()
+      });
+
+      for (const { name, current_price } of result) {
+        logSuccess(`${name}: ${format(current_price)}`);
+      }
+    } catch (error) {
+      logError(`An error occured: ${(error as Error).message}`);
+    }
+  }
+};

src/index.ts

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+import meow from 'meow';
+import { app } from './actions';
+
+const cli = meow(
+  `
+    Usage:
+    $ coffee 
+
+    Options:
+    --price, -p - Coin name
+
+    Examples:
+    $coffee --price bitcoin 
+    >> bitoin: $1337 
+`,
+  {
+    flags: {
+      price: {
+        type: 'string',
+        isMultiple: true,
+        alias: 'p'
+      }
+    }
+  }
+);
+
+app(cli.input[0], cli.flags);

src/utils.ts

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+import chalk from 'chalk';
+
+const ERROR = chalk.bold.red;
+const SUCCESS = chalk.bold.green;
+
+const formatter = new Intl.NumberFormat('en-US', {
+  style: 'currency',
+  currency: 'USD'
+});
+
+export const logError = (message: string) => {
+  console.log(ERROR(message));
+};
+
+export const logSuccess = (message: string) => {
+  console.log(SUCCESS(message));
+};
+
+export const format = (price: number) => {
+  return formatter.format(price);
+};

tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "allowSyntheticDefaultImports": true,
+    "esModuleInterop": true,
+    "resolveJsonModule": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "outDir": "dist",
+    "typeRoots": ["node_modules/@types"]
+  },
+  "include": ["src"],
+  "exclude": ["node_modules"]
+}