commanderjs_typescript_cli_with_commands_arguments_options.ts

1import { Command } from 'commander';
2
3const program = new Command();
4
5program
6  .name('string-util')
7  .description('CLI to some JavaScript string utilities')
8  .version('0.8.0');
9
10program.command('split')
11  .description('Split a string into substrings and display as an array')
12  .argument('<string>', 'string to split')
13  .option('--first', 'display just the first substring')
14  .option('-s, --separator <char>', 'separator character', ',')
15  .action((str, options) => {
16    const limit = options.first ? 1 : undefined;
17    console.log(str.split(options.separator, limit));
18  });
19
20program.parse();