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Function: isValid()

isValid<T, E>(validation): validation is Valid<T>

Defined in: validation/guards/index.ts:36

Type guard to check if a Validation is Valid.

Narrows the type to Valid, allowing safe access to the value.

Type Parameters​

T​

T

E​

E

Parameters​

validation​

Validation<T, E>

The validation to check

Returns​

validation is Valid<T>

True if the validation is Valid

Example​

const result = valid(42)

if (isValid(result)) {
  console.log(result.value) // TypeScript knows this is safe: 42
}

// Real-world: Conditional logic based on validation
const validation = validateEmail(email)
if (isValid(validation)) {
  await sendEmail(validation.value)
} else {
  showErrors(validation.errors)
}

See​

isInvalid - for checking if validation failed