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//// [stringIndexerConstrainsPropertyDeclarations.ts]
// String indexer types constrain the types of named properties in their containing type
interface MyString extends String {
foo: number;
}
class C {
[x: string]: string;
constructor() { } // ok
a: string; // ok
b: number; // error
c: () => {} // error
"d": string; // ok
"e": number; // error
1.0: string; // ok
2.0: number; // error
"3.0": string; // ok
"4.0": number; // error
f: MyString; // error
get X() { // ok
return '';
}
set X(v) { } // ok
foo() { // error
return '';
}
static sa: number; // ok
static sb: string; // ok
static foo() { } // ok
static get X() { // ok
return 1;
}
}
interface I {
[x: string]: string;
a: string; // ok
b: number; // error
c: () => {} // error
"d": string; // ok
"e": number; // error
1.0: string; // ok
2.0: number; // error
(): string; // ok
(x): number // ok
foo(): string; // error
"3.0": string; // ok
"4.0": number; // error
f: MyString; // error
}
var a: {
[x: string]: string;
a: string; // ok
b: number; // error
c: () => {} // error
"d": string; // ok
"e": number; // error
1.0: string; // ok
2.0: number; // error
(): string; // ok
(x): number // ok
foo(): string; // error
"3.0": string; // ok
"4.0": number; // error
f: MyString; // error
}
// error
var b: { [x: string]: string; } = {
a: '',
b: 1,
c: () => { },
"d": '',
"e": 1,
1.0: '',
2.0: 1,
"3.0": '',
"4.0": 1,
f: <MyString>null,
get X() {
return '';
},
set X(v) { },
foo() {
return '';
}
}
//// [stringIndexerConstrainsPropertyDeclarations.js]
// String indexer types constrain the types of named properties in their containing type
var C = /** @class */ (function () {
function C() {
} // ok
Object.defineProperty(C.prototype, "X", {
get: function () {
return '';
},
set: function (v) { } // ok
,
enumerable: true,
configurable: true
});
C.prototype.foo = function () {
return '';
};
C.foo = function () { }; // ok
Object.defineProperty(C, "X", {
get: function () {
return 1;
},
enumerable: true,
configurable: true
});
return C;
}());
var a;
// error
var b = {
a: '',
b: 1,
c: function () { },
"d": '',
"e": 1,
1.0: '',
2.0: 1,
"3.0": '',
"4.0": 1,
f: null,
get X() {
return '';
},
set X(v) { },
foo: function () {
return '';
}
};
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