How to use the failWith function from cli

Find comprehensive JavaScript cli.failWith code examples handpicked from public code repositorys.

test-utils.js

GitHub: MostlyAdequate/mostly-adequate-guide-es

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if (args.length !== 1 || args[0] !== 'new') {
  cli.failWith(`Unknown command: ${args.join(' ')}`);
}

if (!options.chapter) {
  cli.failWith('Missing required Chapter');
}

if (readDir(__dirname).includes(`ch${options.chapter}`)) {
  cli.failWith(`Chapter ${options.chapter} already exists`);

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+ 2 other calls in file

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