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patternjavascriptCritical

Overriding interface property type defined in Typescript d.ts file

Submitted by: @import:stackoverflow-api··
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propertytypescriptoverridinginterfacedefinedfiletype

Problem

Is there a way to change the type of interface property defined in a *.d.ts in typescript?

for example:
An interface in x.d.ts is defined as

interface A {
  property: number;
}


I want to change it in the typescript files that I write to

interface A {
  property: Object;
}


or even this would work

interface B extends A {
  property: Object;
}


Will this approach work? It didn't work when I tried on my system. Just want to confirm if it's even possible?

Solution

I use a method that first filters the fields and then combines them.

reference Exclude property from type

interface A {
    x: string
}

export type B = Omit & { x: number };


for interface:

interface A {
    x: string
}

interface B extends Omit {
  x: number
}

Code Snippets

interface A {
    x: string
}

export type B = Omit<A, 'x'> & { x: number };
interface A {
    x: string
}

interface B extends Omit<A, 'x'> {
  x: number
}

Context

Stack Overflow Q#41285211, score: 1077

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