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Fixed a crash related to computed enum member keys #63182

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Fixed a crash related to computed enum member keys #63182

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2 changes: 1 addition & 1 deletion src/compiler/checker.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -13549,7 +13549,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
for (const declaration of symbol.declarations) {
if (declaration.kind === SyntaxKind.EnumDeclaration) {
for (const member of (declaration as EnumDeclaration).members) {
if (hasBindableName(member)) {
if (!hasDynamicName(member)) {
const memberSymbol = getSymbolOfDeclaration(member);
const value = getEnumMemberValue(member).value;
const memberType = getFreshTypeOfLiteralType(
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15 changes: 15 additions & 0 deletions tests/baselines/reference/computedEnumMemberKeyNoCrash1.errors.txt
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@@ -0,0 +1,15 @@
computedEnumMemberKeyNoCrash1.ts(4,5): error TS1164: Computed property names are not allowed in enums.


==== computedEnumMemberKeyNoCrash1.ts (1 errors) ====
// https://github.com/microsoft/TypeScript/issues/63173

declare const enum E {
[foo] = 1,
~~~~~
!!! error TS1164: Computed property names are not allowed in enums.
A,
foo = 10,
}
E.A.toString();

25 changes: 25 additions & 0 deletions tests/baselines/reference/computedEnumMemberKeyNoCrash1.symbols
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@@ -0,0 +1,25 @@
//// [tests/cases/compiler/computedEnumMemberKeyNoCrash1.ts] ////

=== computedEnumMemberKeyNoCrash1.ts ===
// https://github.com/microsoft/TypeScript/issues/63173

declare const enum E {
>E : Symbol(E, Decl(computedEnumMemberKeyNoCrash1.ts, 0, 0))

[foo] = 1,
>[foo] : Symbol(E[foo], Decl(computedEnumMemberKeyNoCrash1.ts, 2, 22))
>foo : Symbol(E.foo, Decl(computedEnumMemberKeyNoCrash1.ts, 4, 6))

A,
>A : Symbol(E.A, Decl(computedEnumMemberKeyNoCrash1.ts, 3, 14))

foo = 10,
>foo : Symbol(E.foo, Decl(computedEnumMemberKeyNoCrash1.ts, 4, 6))
}
E.A.toString();
>E.A.toString : Symbol(Number.toString, Decl(lib.es5.d.ts, --, --))
>E.A : Symbol(E.A, Decl(computedEnumMemberKeyNoCrash1.ts, 3, 14))
>E : Symbol(E, Decl(computedEnumMemberKeyNoCrash1.ts, 0, 0))
>A : Symbol(E.A, Decl(computedEnumMemberKeyNoCrash1.ts, 3, 14))
>toString : Symbol(Number.toString, Decl(lib.es5.d.ts, --, --))

41 changes: 41 additions & 0 deletions tests/baselines/reference/computedEnumMemberKeyNoCrash1.types
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@@ -0,0 +1,41 @@
//// [tests/cases/compiler/computedEnumMemberKeyNoCrash1.ts] ////

=== computedEnumMemberKeyNoCrash1.ts ===
// https://github.com/microsoft/TypeScript/issues/63173

declare const enum E {
>E : E
> : ^

[foo] = 1,
>[foo] : E
> : ^
>foo : E.foo
> : ^^^^^
>1 : 1
> : ^

A,
>A : E.A
> : ^^^

foo = 10,
>foo : E.foo
> : ^^^^^
>10 : 10
> : ^^
}
E.A.toString();
>E.A.toString() : string
> : ^^^^^^
>E.A.toString : (radix?: number) => string
> : ^ ^^^ ^^^^^
>E.A : E.A
> : ^^^
>E : typeof E
> : ^^^^^^^^
>A : E.A
> : ^^^
>toString : (radix?: number) => string
> : ^ ^^^ ^^^^^

11 changes: 11 additions & 0 deletions tests/cases/compiler/computedEnumMemberKeyNoCrash1.ts
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@@ -0,0 +1,11 @@
// @strict: true
// @noEmit: true

// https://github.com/microsoft/TypeScript/issues/63173

declare const enum E {
[foo] = 1,
A,
foo = 10,
}
E.A.toString();