Global augmentation
You can also add declarations to the global scope from inside a module:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | // observable.tsexport class Observable<T> { // ... still no implementation ...}declare global { interface Array<T> { toObservable(): Observable<T>; }}Array.prototype.toObservable = function () { // ...} |
Global augmentations have the same behavior and limits as module augmentations.
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