TS2814

error TS2814: Function with bodies can only merge with classes that are ambient.

Solution

Broken Code ❌

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class MyClass {}

function MyClass(): void {}

Your function cannot be named after your class, so you will have to rename your function:

Fixed Code ✔️

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class MyClass {}

function MyFunctionWithAnotherName(): void {}

Alternatively you can declare an ambient class which gets implemented by your function:

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declare class MyClass {}

function MyClass(): void {}