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"No repeated property names" error in object literals is duplicated in strict mode (#46929)

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* "No repeated property names" error in object literals is duplicated in strict mode

* fix indent
This commit is contained in:
Yuki Osaki
2021-12-07 03:22:28 +09:00
committed by GitHub
parent 97a7901f26
commit 1f275d705d
20 changed files with 197 additions and 100 deletions
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6
src/compiler/binder.ts
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@@ -2066,12 +2066,6 @@ namespace ts {
seen.set(identifier.escapedText, currentKind);
continue;
}
if (currentKind === ElementKind.Property && existingKind === ElementKind.Property) {
const span = getErrorSpanForNode(file, identifier);
file.bindDiagnostics.push(createFileDiagnostic(file, span.start, span.length,
Diagnostics.An_object_literal_cannot_have_multiple_properties_with_the_same_name_in_strict_mode));
}
}
}

5
src/compiler/checker.ts
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@@ -43126,9 +43126,12 @@ namespace ts {
seen.set(effectiveName, currentKind);
}
else {
if ((currentKind & DeclarationMeaning.PropertyAssignmentOrMethod) && (existingKind & DeclarationMeaning.PropertyAssignmentOrMethod)) {
if ((currentKind & DeclarationMeaning.Method) && (existingKind & DeclarationMeaning.Method)) {
grammarErrorOnNode(name, Diagnostics.Duplicate_identifier_0, getTextOfNode(name));
}
else if ((currentKind & DeclarationMeaning.PropertyAssignment) && (existingKind & DeclarationMeaning.PropertyAssignment)) {
grammarErrorOnNode(name, Diagnostics.An_object_literal_cannot_have_multiple_properties_with_the_same_name, getTextOfNode(name));
}
else if ((currentKind & DeclarationMeaning.GetOrSetAccessor) && (existingKind & DeclarationMeaning.GetOrSetAccessor)) {
if (existingKind !== DeclarationMeaning.GetOrSetAccessor && currentKind !== existingKind) {
seen.set(effectiveName, currentKind | existingKind);

2
src/compiler/diagnosticMessages.json
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@@ -335,7 +335,7 @@
"category": "Error",
"code": 1116
},
"An object literal cannot have multiple properties with the same name in strict mode.": {
"An object literal cannot have multiple properties with the same name.": {
"category": "Error",
"code": 1117
},

4
tests/baselines/reference/duplicateIdentifierDifferentSpelling.errors.txt
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@@ -1,5 +1,5 @@
tests/cases/compiler/duplicateIdentifierDifferentSpelling.ts(3,3): error TS2300: Duplicate identifier '3'.
tests/cases/compiler/duplicateIdentifierDifferentSpelling.ts(6,21): error TS2300: Duplicate identifier '3'.
tests/cases/compiler/duplicateIdentifierDifferentSpelling.ts(6,21): error TS1117: An object literal cannot have multiple properties with the same name.
==== tests/cases/compiler/duplicateIdentifierDifferentSpelling.ts (2 errors) ====
@@ -12,5 +12,5 @@ tests/cases/compiler/duplicateIdentifierDifferentSpelling.ts(6,21): error TS2300
var X = { 0b11: '', 3: '' };
~
!!! error TS2300: Duplicate identifier '3'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.

16
tests/baselines/reference/duplicateObjectLiteralProperty.errors.txt
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@@ -1,7 +1,7 @@
tests/cases/compiler/duplicateObjectLiteralProperty.ts(4,5): error TS2300: Duplicate identifier 'a'.
tests/cases/compiler/duplicateObjectLiteralProperty.ts(5,5): error TS2300: Duplicate identifier '\u0061'.
tests/cases/compiler/duplicateObjectLiteralProperty.ts(6,5): error TS2300: Duplicate identifier 'a'.
tests/cases/compiler/duplicateObjectLiteralProperty.ts(8,9): error TS2300: Duplicate identifier '"c"'.
tests/cases/compiler/duplicateObjectLiteralProperty.ts(4,5): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/compiler/duplicateObjectLiteralProperty.ts(5,5): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/compiler/duplicateObjectLiteralProperty.ts(6,5): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/compiler/duplicateObjectLiteralProperty.ts(8,9): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/compiler/duplicateObjectLiteralProperty.ts(14,9): error TS2300: Duplicate identifier 'a'.
tests/cases/compiler/duplicateObjectLiteralProperty.ts(15,9): error TS2300: Duplicate identifier 'a'.
tests/cases/compiler/duplicateObjectLiteralProperty.ts(16,9): error TS1118: An object literal cannot have multiple get/set accessors with the same name.
@@ -14,17 +14,17 @@ tests/cases/compiler/duplicateObjectLiteralProperty.ts(16,9): error TS2300: Dupl
b: true, // OK
a: 56, // Duplicate
~
!!! error TS2300: Duplicate identifier 'a'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
\u0061: "ss", // Duplicate
~~~~~~
!!! error TS2300: Duplicate identifier '\u0061'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
a: {
~
!!! error TS2300: Duplicate identifier 'a'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
c: 1,
"c": 56, // Duplicate
~~~
!!! error TS2300: Duplicate identifier '"c"'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
}
};

24
tests/baselines/reference/duplicateObjectLiteralProperty_computedName.errors.txt
View File

@@ -1,9 +1,9 @@
tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts(3,5): error TS2300: Duplicate identifier '[1]'.
tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts(8,5): error TS2300: Duplicate identifier '[+1]'.
tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts(13,5): error TS2300: Duplicate identifier '[+1]'.
tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts(23,5): error TS2300: Duplicate identifier '["+1"]'.
tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts(28,5): error TS2300: Duplicate identifier '[-1]'.
tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts(33,5): error TS2300: Duplicate identifier '["-1"]'.
tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts(3,5): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts(8,5): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts(13,5): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts(23,5): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts(28,5): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts(33,5): error TS1117: An object literal cannot have multiple properties with the same name.
==== tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts (6 errors) ====
@@ -11,21 +11,21 @@ tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts(33,5): error
1: 1,
[1]: 0 // duplicate
~~~
!!! error TS2300: Duplicate identifier '[1]'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
}
const t2 = {
1: 1,
[+1]: 0 // duplicate
~~~~
!!! error TS2300: Duplicate identifier '[+1]'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
}
const t3 = {
"1": 1,
[+1]: 0 // duplicate
~~~~
!!! error TS2300: Duplicate identifier '[+1]'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
}
const t4 = {
@@ -37,20 +37,20 @@ tests/cases/compiler/duplicateObjectLiteralProperty_computedName.ts(33,5): error
"+1": 1,
["+1"]: 0 // duplicate
~~~~~~
!!! error TS2300: Duplicate identifier '["+1"]'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
}
const t6 = {
"-1": 1,
[-1]: 0 // duplicate
~~~~
!!! error TS2300: Duplicate identifier '[-1]'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
}
const t7 = {
"-1": 1,
["-1"]: 0 // duplicate
~~~~~~
!!! error TS2300: Duplicate identifier '["-1"]'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
}

9
tests/baselines/reference/duplicatePropertiesInStrictMode.errors.txt
View File

@@ -1,14 +1,11 @@
tests/cases/compiler/duplicatePropertiesInStrictMode.ts(4,3): error TS1117: An object literal cannot have multiple properties with the same name in strict mode.
tests/cases/compiler/duplicatePropertiesInStrictMode.ts(4,3): error TS2300: Duplicate identifier 'x'.
tests/cases/compiler/duplicatePropertiesInStrictMode.ts(4,3): error TS1117: An object literal cannot have multiple properties with the same name.
==== tests/cases/compiler/duplicatePropertiesInStrictMode.ts (2 errors) ====
==== tests/cases/compiler/duplicatePropertiesInStrictMode.ts (1 errors) ====
"use strict";
var x = {
x: 1,
x: 2
~
!!! error TS1117: An object literal cannot have multiple properties with the same name in strict mode.
~
!!! error TS2300: Duplicate identifier 'x'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
}

8
tests/baselines/reference/duplicatePropertyNames.errors.txt
View File

@@ -12,8 +12,8 @@ tests/cases/conformance/types/members/duplicatePropertyNames.ts(35,5): error TS2
tests/cases/conformance/types/members/duplicatePropertyNames.ts(36,5): error TS2300: Duplicate identifier 'foo'.
tests/cases/conformance/types/members/duplicatePropertyNames.ts(38,5): error TS2300: Duplicate identifier 'bar'.
tests/cases/conformance/types/members/duplicatePropertyNames.ts(39,5): error TS2300: Duplicate identifier 'bar'.
tests/cases/conformance/types/members/duplicatePropertyNames.ts(44,5): error TS2300: Duplicate identifier 'foo'.
tests/cases/conformance/types/members/duplicatePropertyNames.ts(46,5): error TS2300: Duplicate identifier 'bar'.
tests/cases/conformance/types/members/duplicatePropertyNames.ts(44,5): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/types/members/duplicatePropertyNames.ts(46,5): error TS1117: An object literal cannot have multiple properties with the same name.
==== tests/cases/conformance/types/members/duplicatePropertyNames.ts (16 errors) ====
@@ -90,10 +90,10 @@ tests/cases/conformance/types/members/duplicatePropertyNames.ts(46,5): error TS2
foo: '',
foo: '',
~~~
!!! error TS2300: Duplicate identifier 'foo'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
bar: () => { },
bar: () => { }
~~~
!!! error TS2300: Duplicate identifier 'bar'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
}

9
tests/baselines/reference/jsFileCompilationBindStrictModeErrors.errors.txt
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@@ -1,5 +1,4 @@
tests/cases/compiler/a.js(5,5): error TS1117: An object literal cannot have multiple properties with the same name in strict mode.
tests/cases/compiler/a.js(5,5): error TS2300: Duplicate identifier 'a'.
tests/cases/compiler/a.js(5,5): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/compiler/a.js(7,5): error TS1212: Identifier expected. 'let' is a reserved word in strict mode.
tests/cases/compiler/a.js(8,8): error TS1102: 'delete' cannot be called on an identifier in strict mode.
tests/cases/compiler/a.js(8,8): error TS2703: The operand of a 'delete' operator must be a property reference.
@@ -15,16 +14,14 @@ tests/cases/compiler/d.js(2,9): error TS1121: Octal literals are not allowed in
tests/cases/compiler/d.js(2,11): error TS1005: ',' expected.
==== tests/cases/compiler/a.js (9 errors) ====
==== tests/cases/compiler/a.js (8 errors) ====
"use strict";
var a = {
a: "hello", // error
b: 10,
a: 10 // error
~
!!! error TS1117: An object literal cannot have multiple properties with the same name in strict mode.
~
!!! error TS2300: Duplicate identifier 'a'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
};
var let = 10; // error
~~~

8
tests/baselines/reference/lastPropertyInLiteralWins.errors.txt
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@@ -1,9 +1,9 @@
tests/cases/compiler/lastPropertyInLiteralWins.ts(8,5): error TS2322: Type '(num: number) => void' is not assignable to type '(str: string) => void'.
Types of parameters 'num' and 'str' are incompatible.
Type 'string' is not assignable to type 'number'.
tests/cases/compiler/lastPropertyInLiteralWins.ts(9,5): error TS2300: Duplicate identifier 'thunk'.
tests/cases/compiler/lastPropertyInLiteralWins.ts(9,5): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/compiler/lastPropertyInLiteralWins.ts(9,5): error TS2322: Type '(num: number) => void' is not assignable to type '(str: string) => void'.
tests/cases/compiler/lastPropertyInLiteralWins.ts(14,5): error TS2300: Duplicate identifier 'thunk'.
tests/cases/compiler/lastPropertyInLiteralWins.ts(14,5): error TS1117: An object literal cannot have multiple properties with the same name.
==== tests/cases/compiler/lastPropertyInLiteralWins.ts (4 errors) ====
@@ -22,7 +22,7 @@ tests/cases/compiler/lastPropertyInLiteralWins.ts(14,5): error TS2300: Duplicate
!!! related TS6500 tests/cases/compiler/lastPropertyInLiteralWins.ts:2:5: The expected type comes from property 'thunk' which is declared here on type 'Thing'
thunk: (num: number) => {}
~~~~~
!!! error TS2300: Duplicate identifier 'thunk'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
~~~~~
!!! error TS2322: Type '(num: number) => void' is not assignable to type '(str: string) => void'.
!!! related TS6500 tests/cases/compiler/lastPropertyInLiteralWins.ts:2:5: The expected type comes from property 'thunk' which is declared here on type 'Thing'
@@ -32,6 +32,6 @@ tests/cases/compiler/lastPropertyInLiteralWins.ts(14,5): error TS2300: Duplicate
thunk: (num: number) => {},
thunk: (str: string) => {}
~~~~~
!!! error TS2300: Duplicate identifier 'thunk'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
});

4
tests/baselines/reference/memberOverride.errors.txt
View File

@@ -1,4 +1,4 @@
tests/cases/compiler/memberOverride.ts(5,5): error TS2300: Duplicate identifier 'a'.
tests/cases/compiler/memberOverride.ts(5,5): error TS1117: An object literal cannot have multiple properties with the same name.
==== tests/cases/compiler/memberOverride.ts (1 errors) ====
@@ -8,7 +8,7 @@ tests/cases/compiler/memberOverride.ts(5,5): error TS2300: Duplicate identifier
a: "",
a: 5
~
!!! error TS2300: Duplicate identifier 'a'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
}
var n: number = x.a;

18
tests/baselines/reference/noRepeatedPropertyNames.errors.txt Normal file
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@@ -0,0 +1,18 @@
tests/cases/compiler/noRepeatedPropertyNames.ts(2,23): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/compiler/noRepeatedPropertyNames.ts(5,32): error TS1117: An object literal cannot have multiple properties with the same name.
==== tests/cases/compiler/noRepeatedPropertyNames.ts (2 errors) ====
// https://github.com/microsoft/TypeScript/issues/46815
const first = { a: 1, a: 2 };
~
!!! error TS1117: An object literal cannot have multiple properties with the same name.
class C {
m() {
const second = { a: 1, a: 2 };
~
!!! error TS1117: An object literal cannot have multiple properties with the same name.
return second.a;
}
}

23
tests/baselines/reference/noRepeatedPropertyNames.js Normal file
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@@ -0,0 +1,23 @@
//// [noRepeatedPropertyNames.ts]
// https://github.com/microsoft/TypeScript/issues/46815
const first = { a: 1, a: 2 };
class C {
m() {
const second = { a: 1, a: 2 };
return second.a;
}
}
//// [noRepeatedPropertyNames.js]
// https://github.com/microsoft/TypeScript/issues/46815
var first = { a: 1, a: 2 };
var C = /** @class */ (function () {
function C() {
}
C.prototype.m = function () {
var second = { a: 1, a: 2 };
return second.a;
};
return C;
}());

25
tests/baselines/reference/noRepeatedPropertyNames.symbols Normal file
View File

@@ -0,0 +1,25 @@
=== tests/cases/compiler/noRepeatedPropertyNames.ts ===
// https://github.com/microsoft/TypeScript/issues/46815
const first = { a: 1, a: 2 };
>first : Symbol(first, Decl(noRepeatedPropertyNames.ts, 1, 5))
>a : Symbol(a, Decl(noRepeatedPropertyNames.ts, 1, 15), Decl(noRepeatedPropertyNames.ts, 1, 21))
>a : Symbol(a, Decl(noRepeatedPropertyNames.ts, 1, 15), Decl(noRepeatedPropertyNames.ts, 1, 21))
class C {
>C : Symbol(C, Decl(noRepeatedPropertyNames.ts, 1, 29))
m() {
>m : Symbol(C.m, Decl(noRepeatedPropertyNames.ts, 2, 9))
const second = { a: 1, a: 2 };
>second : Symbol(second, Decl(noRepeatedPropertyNames.ts, 4, 13))
>a : Symbol(a, Decl(noRepeatedPropertyNames.ts, 4, 24), Decl(noRepeatedPropertyNames.ts, 4, 30))
>a : Symbol(a, Decl(noRepeatedPropertyNames.ts, 4, 24), Decl(noRepeatedPropertyNames.ts, 4, 30))
return second.a;
>second.a : Symbol(a, Decl(noRepeatedPropertyNames.ts, 4, 24), Decl(noRepeatedPropertyNames.ts, 4, 30))
>second : Symbol(second, Decl(noRepeatedPropertyNames.ts, 4, 13))
>a : Symbol(a, Decl(noRepeatedPropertyNames.ts, 4, 24), Decl(noRepeatedPropertyNames.ts, 4, 30))
}
}

31
tests/baselines/reference/noRepeatedPropertyNames.types Normal file
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@@ -0,0 +1,31 @@
=== tests/cases/compiler/noRepeatedPropertyNames.ts ===
// https://github.com/microsoft/TypeScript/issues/46815
const first = { a: 1, a: 2 };
>first : { a: number; }
>{ a: 1, a: 2 } : { a: number; }
>a : number
>1 : 1
>a : number
>2 : 2
class C {
>C : C
m() {
>m : () => number
const second = { a: 1, a: 2 };
>second : { a: number; }
>{ a: 1, a: 2 } : { a: number; }
>a : number
>1 : 1
>a : number
>2 : 2
return second.a;
>second.a : number
>second : { a: number; }
>a : number
}
}

4
tests/baselines/reference/numericStringNamedPropertyEquivalence.errors.txt
View File

@@ -4,7 +4,7 @@ tests/cases/conformance/types/objectTypeLiteral/propertySignatures/numericString
tests/cases/conformance/types/objectTypeLiteral/propertySignatures/numericStringNamedPropertyEquivalence.ts(16,5): error TS2300: Duplicate identifier '1'.
tests/cases/conformance/types/objectTypeLiteral/propertySignatures/numericStringNamedPropertyEquivalence.ts(17,5): error TS2300: Duplicate identifier '1'.
tests/cases/conformance/types/objectTypeLiteral/propertySignatures/numericStringNamedPropertyEquivalence.ts(17,5): error TS2717: Subsequent property declarations must have the same type. Property '1.0' must be of type 'number', but here has type 'string'.
tests/cases/conformance/types/objectTypeLiteral/propertySignatures/numericStringNamedPropertyEquivalence.ts(22,5): error TS2300: Duplicate identifier '0'.
tests/cases/conformance/types/objectTypeLiteral/propertySignatures/numericStringNamedPropertyEquivalence.ts(22,5): error TS1117: An object literal cannot have multiple properties with the same name.
==== tests/cases/conformance/types/objectTypeLiteral/propertySignatures/numericStringNamedPropertyEquivalence.ts (7 errors) ====
@@ -44,5 +44,5 @@ tests/cases/conformance/types/objectTypeLiteral/propertySignatures/numericString
"0": '',
0: ''
~
!!! error TS2300: Duplicate identifier '0'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
}

72
tests/baselines/reference/objectLiteralErrors.errors.txt
View File

@@ -1,22 +1,22 @@
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(2,18): error TS2300: Duplicate identifier 'a'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(3,19): error TS2300: Duplicate identifier 'a'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(4,18): error TS2300: Duplicate identifier 'a'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(5,21): error TS2300: Duplicate identifier 'a'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(6,19): error TS2300: Duplicate identifier 'a'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(7,18): error TS2300: Duplicate identifier ''a''.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(8,20): error TS2300: Duplicate identifier 'a'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(9,20): error TS2300: Duplicate identifier '"a"'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(10,20): error TS2300: Duplicate identifier ''a''.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(11,21): error TS2300: Duplicate identifier ''a''.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(12,21): error TS2300: Duplicate identifier ''1''.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(13,19): error TS2300: Duplicate identifier '0'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(14,19): error TS2300: Duplicate identifier '0'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(15,19): error TS2300: Duplicate identifier '0x0'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(2,18): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(3,19): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(4,18): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(5,21): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(6,19): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(7,18): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(8,20): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(9,20): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(10,20): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(11,21): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(12,21): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(13,19): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(14,19): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(15,19): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(16,19): error TS1085: Octal literals are not available when targeting ECMAScript 5 and higher. Use the syntax '0o0'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(16,19): error TS2300: Duplicate identifier '000'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(17,23): error TS2300: Duplicate identifier '1e2'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(18,22): error TS2300: Duplicate identifier '3.2e1'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(19,25): error TS2300: Duplicate identifier 'a'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(16,19): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(17,23): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(18,22): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(19,25): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(22,12): error TS2300: Duplicate identifier 'a'.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(22,22): error TS1119: An object literal cannot have property and accessor with the same name.
tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(22,22): error TS2300: Duplicate identifier 'a'.
@@ -80,60 +80,60 @@ tests/cases/conformance/expressions/objectLiterals/objectLiteralErrors.ts(44,16)
// Multiple properties with the same name
var e1 = { a: 0, a: 0 };
~
!!! error TS2300: Duplicate identifier 'a'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e2 = { a: '', a: '' };
~
!!! error TS2300: Duplicate identifier 'a'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e3 = { a: 0, a: '' };
~
!!! error TS2300: Duplicate identifier 'a'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e4 = { a: true, a: false };
~
!!! error TS2300: Duplicate identifier 'a'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e5 = { a: {}, a: {} };
~
!!! error TS2300: Duplicate identifier 'a'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e6 = { a: 0, 'a': 0 };
~~~
!!! error TS2300: Duplicate identifier ''a''.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e7 = { 'a': 0, a: 0 };
~
!!! error TS2300: Duplicate identifier 'a'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e8 = { 'a': 0, "a": 0 };
~~~
!!! error TS2300: Duplicate identifier '"a"'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e9 = { 'a': 0, 'a': 0 };
~~~
!!! error TS2300: Duplicate identifier ''a''.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e10 = { "a": 0, 'a': 0 };
~~~
!!! error TS2300: Duplicate identifier ''a''.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e11 = { 1.0: 0, '1': 0 };
~~~
!!! error TS2300: Duplicate identifier ''1''.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e12 = { 0: 0, 0: 0 };
~
!!! error TS2300: Duplicate identifier '0'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e13 = { 0: 0, 0: 0 };
~
!!! error TS2300: Duplicate identifier '0'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e14 = { 0: 0, 0x0: 0 };
~~~
!!! error TS2300: Duplicate identifier '0x0'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e14 = { 0: 0, 000: 0 };
~~~
!!! error TS1085: Octal literals are not available when targeting ECMAScript 5 and higher. Use the syntax '0o0'.
~~~
!!! error TS2300: Duplicate identifier '000'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e15 = { "100": 0, 1e2: 0 };
~~~
!!! error TS2300: Duplicate identifier '1e2'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e16 = { 0x20: 0, 3.2e1: 0 };
~~~~~
!!! error TS2300: Duplicate identifier '3.2e1'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
var e17 = { a: 0, b: 1, a: 0 };
~
!!! error TS2300: Duplicate identifier 'a'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
// Accessor and property with the same name
var f1 = { a: 0, get a() { return 0; } };

8
tests/baselines/reference/objectSpreadNegative.errors.txt
View File

@@ -6,8 +6,8 @@ tests/cases/conformance/types/spread/objectSpreadNegative.ts(16,5): error TS2322
tests/cases/conformance/types/spread/objectSpreadNegative.ts(23,1): error TS2741: Property 'b' is missing in type '{ s: string; }' but required in type '{ s: string; b: boolean; }'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(25,1): error TS2741: Property 's' is missing in type '{ b: boolean; }' but required in type '{ s: string; b: boolean; }'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(28,20): error TS2783: 'b' is specified more than once, so this usage will be overwritten.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(28,36): error TS2300: Duplicate identifier 'b'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(28,53): error TS2300: Duplicate identifier 'b'.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(28,36): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(28,53): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(32,7): error TS2783: 'b' is specified more than once, so this usage will be overwritten.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(37,7): error TS2783: 'b' is specified more than once, so this usage will be overwritten.
tests/cases/conformance/types/spread/objectSpreadNegative.ts(37,7): error TS2783: 'b' is specified more than once, so this usage will be overwritten.
@@ -73,9 +73,9 @@ tests/cases/conformance/types/spread/objectSpreadNegative.ts(74,11): error TS233
!!! error TS2783: 'b' is specified more than once, so this usage will be overwritten.
!!! related TS2785 tests/cases/conformance/types/spread/objectSpreadNegative.ts:28:30: This spread always overwrites this property.
~
!!! error TS2300: Duplicate identifier 'b'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
~
!!! error TS2300: Duplicate identifier 'b'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
let duplicatedSpread = { ...o, ...o }
// Note: ignore changes the order that properties are printed
let ignore: { a: number, b: string } =

12
tests/baselines/reference/objectTypeWithDuplicateNumericProperty.errors.txt
View File

@@ -9,9 +9,9 @@ tests/cases/conformance/types/members/objectTypeWithDuplicateNumericProperty.ts(
tests/cases/conformance/types/members/objectTypeWithDuplicateNumericProperty.ts(20,5): error TS2300: Duplicate identifier '1'.
tests/cases/conformance/types/members/objectTypeWithDuplicateNumericProperty.ts(21,5): error TS2300: Duplicate identifier '1'.
tests/cases/conformance/types/members/objectTypeWithDuplicateNumericProperty.ts(22,5): error TS2300: Duplicate identifier '1'.
tests/cases/conformance/types/members/objectTypeWithDuplicateNumericProperty.ts(27,5): error TS2300: Duplicate identifier '1.0'.
tests/cases/conformance/types/members/objectTypeWithDuplicateNumericProperty.ts(28,5): error TS2300: Duplicate identifier '1.'.
tests/cases/conformance/types/members/objectTypeWithDuplicateNumericProperty.ts(29,5): error TS2300: Duplicate identifier '1.00'.
tests/cases/conformance/types/members/objectTypeWithDuplicateNumericProperty.ts(27,5): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/types/members/objectTypeWithDuplicateNumericProperty.ts(28,5): error TS1117: An object literal cannot have multiple properties with the same name.
tests/cases/conformance/types/members/objectTypeWithDuplicateNumericProperty.ts(29,5): error TS1117: An object literal cannot have multiple properties with the same name.
==== tests/cases/conformance/types/members/objectTypeWithDuplicateNumericProperty.ts (14 errors) ====
@@ -65,13 +65,13 @@ tests/cases/conformance/types/members/objectTypeWithDuplicateNumericProperty.ts(
1: 1,
1.0: 1,
~~~
!!! error TS2300: Duplicate identifier '1.0'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
1.: 1,
~~
!!! error TS2300: Duplicate identifier '1.'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
1.00: 1
~~~~
!!! error TS2300: Duplicate identifier '1.00'.
!!! error TS1117: An object literal cannot have multiple properties with the same name.
}

9
tests/cases/compiler/noRepeatedPropertyNames.ts Normal file
View File

@@ -0,0 +1,9 @@
// @strict: false
// https://github.com/microsoft/TypeScript/issues/46815
const first = { a: 1, a: 2 };
class C {
m() {
const second = { a: 1, a: 2 };
return second.a;
}
}