index.js
function(v) {
		return _.isNull(v) || (_.isString(v) && _.isEmpty(v));
	}
function(v) {
		return _.isNull(v) || (_.isString(v) && _.isEmpty(v));
	}
function ( v ) { return _ . isNull ( v ) || ( _ . isString ( v ) && _ . isEmpty ( v ) ) ; }
Returns true if argument is null or empty string.

@param {*} v - the value to be tested
@return {boolean} true if null or "", false otherwise.

@memberof Valichain.$
@static
Returns true if argument is null or empty string .