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//// [contextualTypeWithUnionTypeMembers.ts]
//When used as a contextual type, a union type U has those members that are present in any of
// its constituent types, with types that are unions of the respective members in the constituent types.
interface I1<T> {
commonMethodType(a: string): string;
commonPropertyType: string;
commonMethodWithTypeParameter(a: T): T;
methodOnlyInI1(a: string): string;
propertyOnlyInI1: string;
}
interface I2<T> {
commonMethodType(a: string): string;
commonPropertyType: string;
commonMethodWithTypeParameter(a: T): T;
methodOnlyInI2(a: string): string;
propertyOnlyInI2: string;
}
// Let S be the set of types in U that has a property P.
// If S is not empty, U has a property P of a union type of the types of P from each type in S.
var i1: I1<number>;
var i2: I2<number>;
var i1Ori2: I1<number> | I2<number> = i1;
var i1Ori2: I1<number> | I2<number> = i2;
var i1Ori2: I1<number> | I2<number> = { // Like i1
commonPropertyType: "hello",
commonMethodType: a=> a,
commonMethodWithTypeParameter: a => a,
methodOnlyInI1: a => a,
propertyOnlyInI1: "Hello",
};
var i1Ori2: I1<number> | I2<number> = { // Like i2
commonPropertyType: "hello",
commonMethodType: a=> a,
commonMethodWithTypeParameter: a => a,
methodOnlyInI2: a => a,
propertyOnlyInI2: "Hello",
};
var i1Ori2: I1<number> | I2<number> = { // Like i1 and i2 both
commonPropertyType: "hello",
commonMethodType: a=> a,
commonMethodWithTypeParameter: a => a,
methodOnlyInI1: a => a,
propertyOnlyInI1: "Hello",
methodOnlyInI2: a => a,
propertyOnlyInI2: "Hello",
};
var arrayI1OrI2: Array<I1<number> | I2<number>> = [i1, i2, { // Like i1
commonPropertyType: "hello",
commonMethodType: a=> a,
commonMethodWithTypeParameter: a => a,
methodOnlyInI1: a => a,
propertyOnlyInI1: "Hello",
},
{ // Like i2
commonPropertyType: "hello",
commonMethodType: a=> a,
commonMethodWithTypeParameter: a => a,
methodOnlyInI2: a => a,
propertyOnlyInI2: "Hello",
}, { // Like i1 and i2 both
commonPropertyType: "hello",
commonMethodType: a=> a,
commonMethodWithTypeParameter: a => a,
methodOnlyInI1: a => a,
propertyOnlyInI1: "Hello",
methodOnlyInI2: a => a,
propertyOnlyInI2: "Hello",
}];
interface I11 {
commonMethodDifferentReturnType(a: string, b: number): string;
commonPropertyDifferentType: string;
}
interface I21 {
commonMethodDifferentReturnType(a: string, b: number): number;
commonPropertyDifferentType: number;
}
var i11: I11;
var i21: I21;
var i11Ori21: I11 | I21 = i11;
var i11Ori21: I11 | I21 = i21;
var i11Ori21: I11 | I21 = {
// Like i1
commonMethodDifferentReturnType: (a, b) => {
var z = a.charAt(b);
return z;
},
commonPropertyDifferentType: "hello",
};
var i11Ori21: I11 | I21 = {
// Like i2
commonMethodDifferentReturnType: (a, b) => {
var z = a.charCodeAt(b);
return z;
},
commonPropertyDifferentType: 10,
};
var arrayOrI11OrI21: Array<I11 | I21> = [i11, i21, i11 || i21, {
// Like i1
commonMethodDifferentReturnType: (a, b) => {
var z = a.charAt(b);
return z;
},
commonPropertyDifferentType: "hello",
}, {
// Like i2
commonMethodDifferentReturnType: (a, b) => {
var z = a.charCodeAt(b);
return z;
},
commonPropertyDifferentType: 10,
}];
//// [contextualTypeWithUnionTypeMembers.js]
// Let S be the set of types in U that has a property P.
// If S is not empty, U has a property P of a union type of the types of P from each type in S.
var i1;
var i2;
var i1Ori2 = i1;
var i1Ori2 = i2;
var i1Ori2 = {
commonPropertyType: "hello",
commonMethodType: function (a) { return a; },
commonMethodWithTypeParameter: function (a) { return a; },
methodOnlyInI1: function (a) { return a; },
propertyOnlyInI1: "Hello"
};
var i1Ori2 = {
commonPropertyType: "hello",
commonMethodType: function (a) { return a; },
commonMethodWithTypeParameter: function (a) { return a; },
methodOnlyInI2: function (a) { return a; },
propertyOnlyInI2: "Hello"
};
var i1Ori2 = {
commonPropertyType: "hello",
commonMethodType: function (a) { return a; },
commonMethodWithTypeParameter: function (a) { return a; },
methodOnlyInI1: function (a) { return a; },
propertyOnlyInI1: "Hello",
methodOnlyInI2: function (a) { return a; },
propertyOnlyInI2: "Hello"
};
var arrayI1OrI2 = [i1, i2, {
commonPropertyType: "hello",
commonMethodType: function (a) { return a; },
commonMethodWithTypeParameter: function (a) { return a; },
methodOnlyInI1: function (a) { return a; },
propertyOnlyInI1: "Hello"
},
{
commonPropertyType: "hello",
commonMethodType: function (a) { return a; },
commonMethodWithTypeParameter: function (a) { return a; },
methodOnlyInI2: function (a) { return a; },
propertyOnlyInI2: "Hello"
}, {
commonPropertyType: "hello",
commonMethodType: function (a) { return a; },
commonMethodWithTypeParameter: function (a) { return a; },
methodOnlyInI1: function (a) { return a; },
propertyOnlyInI1: "Hello",
methodOnlyInI2: function (a) { return a; },
propertyOnlyInI2: "Hello"
}];
var i11;
var i21;
var i11Ori21 = i11;
var i11Ori21 = i21;
var i11Ori21 = {
// Like i1
commonMethodDifferentReturnType: function (a, b) {
var z = a.charAt(b);
return z;
},
commonPropertyDifferentType: "hello"
};
var i11Ori21 = {
// Like i2
commonMethodDifferentReturnType: function (a, b) {
var z = a.charCodeAt(b);
return z;
},
commonPropertyDifferentType: 10
};
var arrayOrI11OrI21 = [i11, i21, i11 || i21, {
// Like i1
commonMethodDifferentReturnType: function (a, b) {
var z = a.charAt(b);
return z;
},
commonPropertyDifferentType: "hello"
}, {
// Like i2
commonMethodDifferentReturnType: function (a, b) {
var z = a.charCodeAt(b);
return z;
},
commonPropertyDifferentType: 10
}];
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