text-validation.ts

import { text, note, isCancel } from '@clack/prompts';
import { setTimeout } from 'node:timers/promises';

async function main() {
  console.clear();

  // Example demonstrating the issue with initial value validation
  const name = await text({
    message: 'Enter your name (letters and spaces only)',
    initialValue: 'John123', // Invalid initial value with numbers
    validate: (value) => {
      if (!/^[a-zA-Z\s]+$/.test(value)) return 'Name can only contain letters and spaces';
      return undefined;
    },
  });

  if (!isCancel(name)) {
    note(`Valid name: ${name}`, 'Success');
  }

  await setTimeout(1000);

  // Example with a valid initial value for comparison
  const validName = await text({
    message: 'Enter another name (letters and spaces only)',
    initialValue: 'John Doe', // Valid initial value
    validate: (value) => {
      if (!/^[a-zA-Z\s]+$/.test(value)) return 'Name can only contain letters and spaces';
      return undefined;
    },
  });

  if (!isCancel(validName)) {
    note(`Valid name: ${validName}`, 'Success');
  }

  await setTimeout(1000);

}

main().catch(console.error);