Function stringValidateFn

src/lib/validate-util.ts:36–55

(options: StringValidationOptions)

 * conditions.
 */
export const stringValidateFn = (options: StringValidationOptions): ValidateFunction<string> => {
	if ('regex' in options) {
		return (input: string): true | string => {
			const regex = typeof options.regex === 'string' ? new RegExp(options.regex) : options.regex
			return regex.test(input) || (options.errorMessage ?? `must match regex ${regex}`)
		}
	}
	if ('minLength' in options && 'maxLength' in options && options.minLength > options.maxLength) {
		throw Error('maxLength must be >= minLength')
	}
	return (input: string): true | string => {
		if ('minLength' in options && input.length < options.minLength) {
			return `must be at least ${options.minLength} characters`
		}
		if ('maxLength' in options && input.length > options.maxLength) {
			return `must be no more than ${options.maxLength} characters`
		}
		return true
	}
}

export type NumberValidateOptions = {
	min?: number