Creating personalized functions in Object.prototype using TypeScript

My current situation involves the following code snippet:

Object.prototype.custom = function() {
    return this
}

Everything runs smoothly in JavaScript, however when I transfer it to TypeScript, an error surfaces:

Property 'custom' does not exist on type 'Object'.ts(2339)

Is there a way to maneuver around or address this issue?

Answer №1

To conduct the experiment (although not recommended in a live environment, in my opinion), you have the option to either disregard it or expand upon Object (also known as augmentation)

// @ts-ignore
Object.prototype.custom = function() {
    return this
}

interface Object {
  custom2(): Object;
}

Object.prototype.custom2 = function() {
    return this
}

TS playground

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