isBoolean
isBoolean :: a → Boolean
import isBoolean from 'deep-waters/isBoolean';
isBoolean(true); // → true
isBoolean(false); // → true
isBoolean(new Boolean(true)); // → true
isBigInt(20); // → false
isBigInt("hello"); // → false
isBigInt(undefined"); // → false
import isString from 'deep-waters/isString';
import matchesPattern from 'deep-waters/matchesPattern';
const isEmail = compose(
isString,
matchesPattern(/^\w+([.-]?\w+)*@\w+([.-]?\w+)*(\.\w{2,3})+$/),
);
isBoolean is built on top of ofClass validator and rely on
Object.prototype.toString
to check on the received value type in order to avoid typeof weird behaviours and encouraging a runtime strict type validation.Last modified 3yr ago