I have a requirement to enhance the Object methods by adding a new method called "isEmpty".
// typings/object.d.ts
declare global {
interface Object {
isEmpty(): boolean;
}
}
Object.prototype.isEmpty = function (this: Object) {
for (let key in this) {
if (this.hasOwnProperty(key)) {
return false;
}
}
return true;
};
After defining the custom method, I want to utilize it in my code like so:
let myEmptyDict = {};
let myFullDict = {"key": "value"};
console.log(myEmptyDict.isEmpty()); // true
console.log(myFullDict.isEmpty()); // false
However, I'm encountering an issue where isEmpty is not recognized. How can I troubleshoot and resolve this problem? I am currently working with Typescript version 3.6.2.