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tests/cases/compiler/readonlyMembers.ts(6,3): error TS2540: Cannot assign to 'a' because it is a read-only property.
tests/cases/compiler/readonlyMembers.ts(7,3): error TS2540: Cannot assign to 'b' because it is a read-only property.
tests/cases/compiler/readonlyMembers.ts(16,14): error TS2540: Cannot assign to 'c' because it is a read-only property.
tests/cases/compiler/readonlyMembers.ts(18,18): error TS2540: Cannot assign to 'a' because it is a read-only property.
tests/cases/compiler/readonlyMembers.ts(19,18): error TS2540: Cannot assign to 'b' because it is a read-only property.
tests/cases/compiler/readonlyMembers.ts(20,18): error TS2540: Cannot assign to 'c' because it is a read-only property.
tests/cases/compiler/readonlyMembers.ts(24,14): error TS2540: Cannot assign to 'a' because it is a read-only property.
tests/cases/compiler/readonlyMembers.ts(25,14): error TS2540: Cannot assign to 'b' because it is a read-only property.
tests/cases/compiler/readonlyMembers.ts(26,14): error TS2540: Cannot assign to 'c' because it is a read-only property.
tests/cases/compiler/readonlyMembers.ts(35,3): error TS2540: Cannot assign to 'a' because it is a read-only property.
tests/cases/compiler/readonlyMembers.ts(39,3): error TS2540: Cannot assign to 'a' because it is a read-only property.
tests/cases/compiler/readonlyMembers.ts(48,3): error TS2540: Cannot assign to 'A' because it is a read-only property.
tests/cases/compiler/readonlyMembers.ts(55,3): error TS2540: Cannot assign to 'a' because it is a read-only property.
tests/cases/compiler/readonlyMembers.ts(61,1): error TS2542: Index signature in type '{ readonly [x: string]: string; }' only permits reading.
tests/cases/compiler/readonlyMembers.ts(64,1): error TS2542: Index signature in type '{ readonly [x: number]: string; [x: string]: string; }' only permits reading.
==== tests/cases/compiler/readonlyMembers.ts (15 errors) ====
interface X {
readonly a: number;
readonly b?: number;
}
var x: X = { a: 0 };
x.a = 1; // Error
~
!!! error TS2540: Cannot assign to 'a' because it is a read-only property.
x.b = 1; // Error
~
!!! error TS2540: Cannot assign to 'b' because it is a read-only property.
class C {
readonly a: number;
readonly b = 1;
get c() { return 1 }
constructor() {
this.a = 1; // Ok
this.b = 1; // Ok
this.c = 1; // Error
~
!!! error TS2540: Cannot assign to 'c' because it is a read-only property.
const f = () => {
this.a = 1; // Error
~
!!! error TS2540: Cannot assign to 'a' because it is a read-only property.
this.b = 1; // Error
~
!!! error TS2540: Cannot assign to 'b' because it is a read-only property.
this.c = 1; // Error
~
!!! error TS2540: Cannot assign to 'c' because it is a read-only property.
}
}
foo() {
this.a = 1; // Error
~
!!! error TS2540: Cannot assign to 'a' because it is a read-only property.
this.b = 1; // Error
~
!!! error TS2540: Cannot assign to 'b' because it is a read-only property.
this.c = 1; // Error
~
!!! error TS2540: Cannot assign to 'c' because it is a read-only property.
}
}
var o = {
get a() { return 1 },
get b() { return 1 },
set b(value) { }
};
o.a = 1; // Error
~
!!! error TS2540: Cannot assign to 'a' because it is a read-only property.
o.b = 1;
var p: { readonly a: number, b: number } = { a: 1, b: 1 };
p.a = 1; // Error
~
!!! error TS2540: Cannot assign to 'a' because it is a read-only property.
p.b = 1;
var q: { a: number, b: number } = p;
q.a = 1;
q.b = 1;
enum E {
A, B, C
}
E.A = 1; // Error
~
!!! error TS2540: Cannot assign to 'A' because it is a read-only property.
namespace N {
export const a = 1;
export let b = 1;
export var c = 1;
}
N.a = 1; // Error
~
!!! error TS2540: Cannot assign to 'a' because it is a read-only property.
N.b = 1;
N.c = 1;
let xx: { readonly [x: string]: string };
let s = xx["foo"];
xx["foo"] = "abc"; // Error
~~~~~~~~~
!!! error TS2542: Index signature in type '{ readonly [x: string]: string; }' only permits reading.
let yy: { readonly [x: number]: string, [x: string]: string };
yy[1] = "abc"; // Error
~~~~~
!!! error TS2542: Index signature in type '{ readonly [x: number]: string; [x: string]: string; }' only permits reading.
yy["foo"] = "abc";
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