//// [assignmentCompatWithCallSignatures2.ts] // void returning call signatures can be assigned a non-void returning call signature that otherwise matches interface T { f(x: number): void; } var t: T; var a: { f(x: number): void }; t = a; a = t; interface S { f(x: number): string; } var s: S; var a2: { f(x: number): string }; t = s; t = a2; a = s; a = a2; t = { f: () => 1 }; t = { f: (x:T) => 1 }; t = { f: function f() { return 1 } }; t = { f(x: number) { return ''; } } a = { f: () => 1 } a = { f: (x: T) => 1 }; a = { f: function (x: number) { return ''; } } // errors t = () => 1; t = function (x: number) { return ''; } a = () => 1; a = function (x: number) { return ''; } interface S2 { f(x: string): void; } var s2: S2; var a3: { f(x: string): void }; // these are errors t = s2; t = a3; t = (x: string) => 1; t = function (x: string) { return ''; } a = s2; a = a3; a = (x: string) => 1; a = function (x: string) { return ''; } //// [assignmentCompatWithCallSignatures2.js] // void returning call signatures can be assigned a non-void returning call signature that otherwise matches var t; var a; t = a; a = t; var s; var a2; t = s; t = a2; a = s; a = a2; t = { f: function () { return 1; } }; t = { f: function (x) { return 1; } }; t = { f: function f() { return 1; } }; t = { f: function (x) { return ''; } }; a = { f: function () { return 1; } }; a = { f: function (x) { return 1; } }; a = { f: function (x) { return ''; } }; // errors t = function () { return 1; }; t = function (x) { return ''; }; a = function () { return 1; }; a = function (x) { return ''; }; var s2; var a3; // these are errors t = s2; t = a3; t = function (x) { return 1; }; t = function (x) { return ''; }; a = s2; a = a3; a = function (x) { return 1; }; a = function (x) { return ''; };