1 2 3 4 5 6 7 8 9 | export const getType = value => Object.prototype.toString.call(value).slice(8, -1); export const isNumber = value => getType(value) === 'Number'; export const isDate = value => getType(value) === 'Date'; export const isString = value => getType(value) === 'String'; export const isArray = value => getType(value) === 'Array'; export const isObject = value => getType(value) === 'Object'; export const isFunction = value => getType(value) === 'Function'; |