Test that a string contains a substring?

5 Replies

BertOP•4w ago

arkType([
    { status: '"Event Completed"', message: 'string' },
    ':',
    r => r.message.includes('test')
]).assert(result)

arkType([
    { status: '"Event Completed"', message: 'string' },
    ':',
    r => r.message.includes('test')
]).assert(result)

Best approach?

Dimava•4w ago

If the substring is simple and constant the best way may be regex

type({
  message:/test/
  // maybe also as type.as<`${string}test${string}`> if you need that lol
})

type({
  message:/test/
  // maybe also as type.as<`${string}test${string}`> if you need that lol
})

BertOP•4w ago

ah that's cool

Dimava•4w ago

I don't recommend narrowing objects unless you mean it Your example needs tuple under message:['string', '=>',... ] Yep regex also gives a free explanation In error messages

BertOP•4w ago

Yeah, it works, but it could be written better Thanks

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Test that a string contains a substring?