124 lines
5.5 KiB
TypeScript
124 lines
5.5 KiB
TypeScript
//// [assignmentCompatWithCallSignaturesWithRestParameters.ts]
|
|
// call signatures in derived types must have the same or fewer optional parameters as the target for assignment
|
|
|
|
interface Base {
|
|
a: (...args: number[]) => number;
|
|
a2: (x: number, ...z: number[]) => number;
|
|
a3: (x: number, y?: string, ...z: number[]) => number;
|
|
a4: (x?: number, y?: string, ...z: number[]) => number;
|
|
}
|
|
|
|
var a: (...args: number[]) => number; // ok, same number of required params
|
|
a = () => 1; // ok, same number of required params
|
|
a = (...args: number[]) => 1; // ok, same number of required params
|
|
a = (...args: string[]) => 1; // error, type mismatch
|
|
a = (x?: number) => 1; // ok, same number of required params
|
|
a = (x?: number, y?: number, z?: number) => 1; // ok, same number of required params
|
|
a = (x: number) => 1; // ok, rest param corresponds to infinite number of params
|
|
a = (x?: string) => 1; // error, incompatible type
|
|
|
|
|
|
var a2: (x: number, ...z: number[]) => number;
|
|
a2 = () => 1; // ok, fewer required params
|
|
a2 = (...args: number[]) => 1; // ok, fewer required params
|
|
a2 = (x?: number) => 1; // ok, fewer required params
|
|
a2 = (x: number) => 1; // ok, same number of required params
|
|
a2 = (x: number, ...args: number[]) => 1; // ok, same number of required params
|
|
a2 = (x: number, ...args: string[]) => 1; // should be type mismatch error
|
|
a2 = (x: number, y: number) => 1; // ok, rest param corresponds to infinite number of params
|
|
a2 = (x: number, y?: number) => 1; // ok, same number of required params
|
|
|
|
var a3: (x: number, y?: string, ...z: number[]) => number;
|
|
a3 = () => 1; // ok, fewer required params
|
|
a3 = (x?: number) => 1; // ok, fewer required params
|
|
a3 = (x: number) => 1; // ok, same number of required params
|
|
a3 = (x: number, y: string) => 1; // ok, all present params match
|
|
a3 = (x: number, y?: number, z?: number) => 1; // error
|
|
a3 = (x: number, ...z: number[]) => 1; // error
|
|
a3 = (x: string, y?: string, z?: string) => 1; // error
|
|
|
|
var a4: (x?: number, y?: string, ...z: number[]) => number;
|
|
a4 = () => 1; // ok, fewer required params
|
|
a4 = (x?: number, y?: number) => 1; // error, type mismatch
|
|
a4 = (x: number) => 1; // ok, all present params match
|
|
a4 = (x: number, y?: number) => 1; // error, second param has type mismatch
|
|
a4 = (x?: number, y?: string) => 1; // ok, same number of required params with matching types
|
|
a4 = (x: number, ...args: string[]) => 1; // error, rest params have type mismatch
|
|
|
|
//// [assignmentCompatWithCallSignaturesWithRestParameters.js]
|
|
// call signatures in derived types must have the same or fewer optional parameters as the target for assignment
|
|
var a; // ok, same number of required params
|
|
a = function () { return 1; }; // ok, same number of required params
|
|
a = function () {
|
|
var args = [];
|
|
for (var _i = 0; _i < arguments.length; _i++) {
|
|
args[_i - 0] = arguments[_i];
|
|
}
|
|
return 1;
|
|
}; // ok, same number of required params
|
|
a = function () {
|
|
var args = [];
|
|
for (var _i = 0; _i < arguments.length; _i++) {
|
|
args[_i - 0] = arguments[_i];
|
|
}
|
|
return 1;
|
|
}; // error, type mismatch
|
|
a = function (x) { return 1; }; // ok, same number of required params
|
|
a = function (x, y, z) { return 1; }; // ok, same number of required params
|
|
a = function (x) { return 1; }; // ok, rest param corresponds to infinite number of params
|
|
a = function (x) { return 1; }; // error, incompatible type
|
|
var a2;
|
|
a2 = function () { return 1; }; // ok, fewer required params
|
|
a2 = function () {
|
|
var args = [];
|
|
for (var _i = 0; _i < arguments.length; _i++) {
|
|
args[_i - 0] = arguments[_i];
|
|
}
|
|
return 1;
|
|
}; // ok, fewer required params
|
|
a2 = function (x) { return 1; }; // ok, fewer required params
|
|
a2 = function (x) { return 1; }; // ok, same number of required params
|
|
a2 = function (x) {
|
|
var args = [];
|
|
for (var _i = 1; _i < arguments.length; _i++) {
|
|
args[_i - 1] = arguments[_i];
|
|
}
|
|
return 1;
|
|
}; // ok, same number of required params
|
|
a2 = function (x) {
|
|
var args = [];
|
|
for (var _i = 1; _i < arguments.length; _i++) {
|
|
args[_i - 1] = arguments[_i];
|
|
}
|
|
return 1;
|
|
}; // should be type mismatch error
|
|
a2 = function (x, y) { return 1; }; // ok, rest param corresponds to infinite number of params
|
|
a2 = function (x, y) { return 1; }; // ok, same number of required params
|
|
var a3;
|
|
a3 = function () { return 1; }; // ok, fewer required params
|
|
a3 = function (x) { return 1; }; // ok, fewer required params
|
|
a3 = function (x) { return 1; }; // ok, same number of required params
|
|
a3 = function (x, y) { return 1; }; // ok, all present params match
|
|
a3 = function (x, y, z) { return 1; }; // error
|
|
a3 = function (x) {
|
|
var z = [];
|
|
for (var _i = 1; _i < arguments.length; _i++) {
|
|
z[_i - 1] = arguments[_i];
|
|
}
|
|
return 1;
|
|
}; // error
|
|
a3 = function (x, y, z) { return 1; }; // error
|
|
var a4;
|
|
a4 = function () { return 1; }; // ok, fewer required params
|
|
a4 = function (x, y) { return 1; }; // error, type mismatch
|
|
a4 = function (x) { return 1; }; // ok, all present params match
|
|
a4 = function (x, y) { return 1; }; // error, second param has type mismatch
|
|
a4 = function (x, y) { return 1; }; // ok, same number of required params with matching types
|
|
a4 = function (x) {
|
|
var args = [];
|
|
for (var _i = 1; _i < arguments.length; _i++) {
|
|
args[_i - 1] = arguments[_i];
|
|
}
|
|
return 1;
|
|
}; // error, rest params have type mismatch
|