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example using inquirer to prompt user #2385

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43 changes: 43 additions & 0 deletions docs/advanced.md
Expand Up @@ -617,3 +617,46 @@ try {
}
console.info('finish')
```

### Using Inquirer to make interactive tools

Using Inquirer together with yargs is a powerful way to make your CLI tools more interactive and responsive to the user.
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One example would be to use `input` to ensure the user inputs required arguments.

```js
import yargs from 'yargs/yargs';
import { hideBin } from 'yargs/helpers';
import { input } from '@inquirer/prompts';

await yargs(hideBin(process.argv))
.command({
command: 'login [username]',
describe: 'Log in with defined username',
builder: (yargs) => {
yargs.positional('username', {
describe: 'The username used to log in',
type: 'string',
});
},
handler: async (argv) => {
if (!argv.username) {
argv.username = await input({ message: 'Please enter your username' });
}

console.log(`Welcome back, ${argv.username}!`);
},
})
.help()
.parse();
```

If username is not given as an argument, inquirer will prompt the user with an input.

```
$ ./app.js login
? Please enter your username:
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$ ./app.js login yargs
Welcome back, yargs!
```