function convertQueuingStrategySize(fn, context) {
		        assertFunction(fn, context);
		        return chunk => convertUnrestrictedDouble(fn(chunk));
		    }
Check if `obj` is a URLSearchParams object
ref: https://github.com/node-fetch/node-fetch/issues/296#issuecomment-307598143
@param {*} object - Object to check for
@return {boolean}