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//// [twoMergedInterfacesWithDifferingOverloads.ts]
// interfaces that merge must not have members that conflict
interface A {
foo(x: number): number;
foo(x: string): string;
}
interface A {
foo(x: Date): Date;
}
interface B<T> {
foo(x: T): number;
foo(x: string): string;
}
interface B<T> {
foo(x: T): Date;
foo(x: Date): string;
}
var b: B<boolean>;
var r = b.foo(true); // returns Date
// add generic overload
interface C<T, U> {
foo(x: T, y: U): string;
foo(x: string, y: string): number;
}
interface C<T, U> {
foo<W>(x: W, y: W): W;
}
var c: C<boolean, Date>;
var r2 = c.foo(1, 2); // number
// add generic overload that would be ambiguous
interface D<T, U> {
a: T;
b: U;
foo<A>(x: A, y: A): U;
}
interface D<T, U> {
foo<W>(x: W, y: W): T;
}
var d: D<boolean, Date>;
var r3 = d.foo(1, 1); // boolean, last definition wins
//// [twoMergedInterfacesWithDifferingOverloads.js]
// interfaces that merge must not have members that conflict
var b;
var r = b.foo(true); // returns Date
var c;
var r2 = c.foo(1, 2); // number
var d;
var r3 = d.foo(1, 1); // boolean, last definition wins
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