├── .gitignore
├── package.json
├── pnpm-lock.yaml
├── src
    └── index.ts
└── tsconfig.json


/.gitignore:
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1 | node_modules
2 | dist


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/package.json:
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 1 | {
 2 |   "name": "practice-cli",
 3 |   "bin": {
 4 |     "practice": "./dist/index.js"
 5 |   },
 6 |   "version": "0.0.0",
 7 |   "description": "",
 8 |   "main": "index.js",
 9 |   "scripts": {
10 |     "link-cli": "yarn --global unlink practice-cli && chmod +x ./dist/index.js && yarn --global link",
11 |     "dev": "tsc -w"
12 |   },
13 |   "keywords": [],
14 |   "author": "Matt Pocock",
15 |   "license": "ISC",
16 |   "devDependencies": {
17 |     "@types/node": "^20.5.0",
18 |     "typescript": "^5.1.6"
19 |   },
20 |   "dependencies": {
21 |     "commander": "^11.0.0"
22 |   }
23 | }
24 | 


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/pnpm-lock.yaml:
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 1 | lockfileVersion: 5.4
 2 | 
 3 | specifiers:
 4 |   '@types/node': ^20.5.0
 5 |   commander: ^11.0.0
 6 |   typescript: ^5.1.6
 7 | 
 8 | dependencies:
 9 |   commander: 11.0.0
10 | 
11 | devDependencies:
12 |   '@types/node': 20.5.0
13 |   typescript: 5.1.6
14 | 
15 | packages:
16 | 
17 |   /@types/node/20.5.0:
18 |     resolution: {integrity: sha512-Mgq7eCtoTjT89FqNoTzzXg2XvCi5VMhRV6+I2aYanc6kQCBImeNaAYRs/DyoVqk1YEUJK5gN9VO7HRIdz4Wo3Q==}
19 |     dev: true
20 | 
21 |   /commander/11.0.0:
22 |     resolution: {integrity: sha512-9HMlXtt/BNoYr8ooyjjNRdIilOTkVJXB+GhxMTtOKwk0R4j4lS4NpjuqmRxroBfnfTSHQIHQB7wryHhXarNjmQ==}
23 |     engines: {node: '>=16'}
24 |     dev: false
25 | 
26 |   /typescript/5.1.6:
27 |     resolution: {integrity: sha512-zaWCozRZ6DLEWAWFrVDz1H6FVXzUSfTy5FUMWsQlU8Ym5JP9eO4xkTIROFCQvhQf61z6O/G6ugw3SgAnvvm+HA==}
28 |     engines: {node: '>=14.17'}
29 |     hasBin: true
30 |     dev: true
31 | 


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/src/index.ts:
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 1 | #!/usr/bin/env node
 2 | 
 3 | import { Command } from "commander";
 4 | 
 5 | // Declare the program
 6 | 
 7 | const program = new Command();
 8 | 
 9 | // Add actions onto that CLI
10 | 
11 | program
12 |   .argument("<string>", "string to log")
13 |   .option("-c, --capitalize", "Capitalize the message")
14 |   .action(
15 |     (
16 |       message: string,
17 |       opts: {
18 |         capitalize?: boolean;
19 |       },
20 |     ) => {
21 |       if (opts.capitalize) {
22 |         console.log(message.toUpperCase());
23 |       } else {
24 |         console.log(message);
25 |       }
26 |     },
27 |   )
28 |   .description("Say hello");
29 | 
30 | program
31 |   .command("add <numbers...>")
32 |   .action((numbers: number[]) => {
33 |     const total = numbers.reduce((a, b) => a + b, 0);
34 |     console.log(`Total: ${total}`);
35 |   })
36 |   .description("Add numbers and log the total");
37 | 
38 | program
39 |   .command("get-max-number <numbers...>")
40 |   .action((numbers: number[]) => {
41 |     const max = Math.max(...numbers);
42 |     console.log(`Max: ${max}`);
43 |   })
44 |   .description("Add numbers and log the total");
45 | 
46 | // Execute the CLI with the given arguments
47 | 
48 | program.parse(process.argv);
49 | 


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/tsconfig.json:
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 1 | {
 2 |   "display": "Node LTS",
 3 |   "_version": "18.1.0",
 4 |   "compilerOptions": {
 5 |     "lib": [
 6 |       "es2023"
 7 |     ],
 8 |     "outDir": "dist",
 9 |     "module": "Node16",
10 |     "target": "es2022",
11 |     "strict": true,
12 |     "noUncheckedIndexedAccess": true,
13 |     "esModuleInterop": true,
14 |     "skipLibCheck": true,
15 |     "forceConsistentCasingInFileNames": true,
16 |     "moduleResolution": "node16"
17 |   },
18 |   "include": [
19 |     "src"
20 |   ]
21 | }


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