isSymbol :: a → Boolean
Evaluates whether the given value is of type Symbol​
import isSymbol from 'deep-waters/isSymbol';
const symbol = Symbol('foo');
isSymbol(symbol); // → true
isSymbol('foo'); // → false
isSymbol, like any other type validator, is mostly used in composed validators:
import isString from 'deep-waters/isString';
import matchesPattern from 'deep-waters/matchesPattern';
const isEmail = compose(
isSymbol 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.