22 lines
664 B
JavaScript
22 lines
664 B
JavaScript
|
"use strict";
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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
|
||
|
|
*/
|
||
|
|
function assertMethodExists(value, method, name, methodPath) {
|
||
|
|
if (value[method] === null || value[method] === undefined) {
|
||
|
|
throw new TypeError(
|
||
|
|
"Expected " + name + " to have method " + methodPath
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = assertMethodExists;
|