=== tests/cases/compiler/assignToPrototype1.ts ===
declare class Point {
>Point : Point, Symbol(Point, Decl(assignToPrototype1.ts, 0, 0))

  add(dx: number, dy: number): void;
>add : (dx: number, dy: number) => void, Symbol(add, Decl(assignToPrototype1.ts, 0, 21))
>dx : number, Symbol(dx, Decl(assignToPrototype1.ts, 1, 6))
>dy : number, Symbol(dy, Decl(assignToPrototype1.ts, 1, 17))
}

Point.prototype.add = function(dx, dy) {
>Point.prototype.add = function(dx, dy) {} : (dx: number, dy: number) => void
>Point.prototype.add : (dx: number, dy: number) => void, Symbol(Point.add, Decl(assignToPrototype1.ts, 0, 21))
>Point.prototype : Point, Symbol(Point.prototype)
>Point : typeof Point, Symbol(Point, Decl(assignToPrototype1.ts, 0, 0))
>prototype : Point, Symbol(Point.prototype)
>add : (dx: number, dy: number) => void, Symbol(Point.add, Decl(assignToPrototype1.ts, 0, 21))
>function(dx, dy) {} : (dx: number, dy: number) => void
>dx : number, Symbol(dx, Decl(assignToPrototype1.ts, 4, 31))
>dy : number, Symbol(dy, Decl(assignToPrototype1.ts, 4, 34))

};