function assertMethodExists(value, method, name, methodPath) {
			if (value[method] === null || value[method] === undefined) {
				throw new TypeError(`Expected ${name} to have method ${methodPath}`);
			}
		}
Throws a TypeError when expected method doesn't exist

@private
@param {*} value A value to examine
@param {string} method The name of the method to look for
@param {name} name A name to use for the error message
@param {string} methodPath The name of the method to use for error messages
@throws {TypeError} When the method doesn't exist