INNER CODE UNIT · JavaScript

isFunction

nitaliano/react-native-mapbox-gl · javascript/utils/index.js:29

export function isFunction(fn) {
  return typeof fn === 'function';
}

export function isNumber(num) {
  return typeof num === 'number' && !Number.isNaN(num);
}

export function isUndefined(obj) {
  return typeof obj === 'undefined';
}

export function isString(str) {
  return typeof str === 'string';
}

export function isBoolean(bool) {
  return typeof bool === 'boolean';

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