fix: add baselines and handle parentheses in getFirstIdentifier

- Add reference baselines for enumKeysExportScenario test
- Fix getFirstIdentifier to skipParentheses when traversing access chains
  to handle cases like (obj.a)['b']

Author: tt-a1i

src/compiler/utilities.ts

@@ -7475,7 +7475,7 @@ export function getFirstIdentifier(node: EntityNameOrEntityNameExpression | Elem
         case SyntaxKind.ElementAccessExpression:
             let expr: Expression = node;
             do {
-                expr = (expr as PropertyAccessExpression | ElementAccessExpression).expression;
+                expr = skipParentheses((expr as PropertyAccessExpression | ElementAccessExpression).expression);
             }
             while (expr.kind !== SyntaxKind.Identifier);
             return expr as Identifier;

tests/baselines/reference/enumKeysExportScenario.js

@@ -0,0 +1,46 @@
+//// [tests/cases/compiler/enumKeysExportScenario.ts] ////
+
+//// [enumKeysExportScenario.ts]
+// Test that export scenario with enum bracket notation doesn't crash
+// This tests the trackComputedName -> getFirstIdentifier path
+
+enum Type {
+    Foo = 'foo',
+    '3x14' = '3x14'
+}
+
+// Export interface with bracket notation computed property
+// This should trigger the tracker path
+export interface TypeMap {
+    [Type['3x14']]: number;
+}
+
+export type TypeMap2 = {
+    [Type['3x14']]: string;
+}
+
+
+//// [enumKeysExportScenario.js]
+"use strict";
+// Test that export scenario with enum bracket notation doesn't crash
+// This tests the trackComputedName -> getFirstIdentifier path
+Object.defineProperty(exports, "__esModule", { value: true });
+var Type;
+(function (Type) {
+    Type["Foo"] = "foo";
+    Type["3x14"] = "3x14";
+})(Type || (Type = {}));
+
+
+//// [enumKeysExportScenario.d.ts]
+declare enum Type {
+    Foo = "foo",
+    '3x14' = "3x14"
+}
+export interface TypeMap {
+    [Type['3x14']]: number;
+}
+export type TypeMap2 = {
+    [Type['3x14']]: string;
+};
+export {};

tests/baselines/reference/enumKeysExportScenario.symbols

@@ -0,0 +1,36 @@
+//// [tests/cases/compiler/enumKeysExportScenario.ts] ////
+
+=== enumKeysExportScenario.ts ===
+// Test that export scenario with enum bracket notation doesn't crash
+// This tests the trackComputedName -> getFirstIdentifier path
+
+enum Type {
+>Type : Symbol(Type, Decl(enumKeysExportScenario.ts, 0, 0))
+
+    Foo = 'foo',
+>Foo : Symbol(Type.Foo, Decl(enumKeysExportScenario.ts, 3, 11))
+
+    '3x14' = '3x14'
+>'3x14' : Symbol(Type['3x14'], Decl(enumKeysExportScenario.ts, 4, 16))
+}
+
+// Export interface with bracket notation computed property
+// This should trigger the tracker path
+export interface TypeMap {
+>TypeMap : Symbol(TypeMap, Decl(enumKeysExportScenario.ts, 6, 1))
+
+    [Type['3x14']]: number;
+>[Type['3x14']] : Symbol(TypeMap[Type['3x14']], Decl(enumKeysExportScenario.ts, 10, 26))
+>Type : Symbol(Type, Decl(enumKeysExportScenario.ts, 0, 0))
+>'3x14' : Symbol(Type['3x14'], Decl(enumKeysExportScenario.ts, 4, 16))
+}
+
+export type TypeMap2 = {
+>TypeMap2 : Symbol(TypeMap2, Decl(enumKeysExportScenario.ts, 12, 1))
+
+    [Type['3x14']]: string;
+>[Type['3x14']] : Symbol([Type['3x14']], Decl(enumKeysExportScenario.ts, 14, 24))
+>Type : Symbol(Type, Decl(enumKeysExportScenario.ts, 0, 0))
+>'3x14' : Symbol(Type['3x14'], Decl(enumKeysExportScenario.ts, 4, 16))
+}
+

tests/baselines/reference/enumKeysExportScenario.types

@@ -0,0 +1,52 @@
+//// [tests/cases/compiler/enumKeysExportScenario.ts] ////
+
+=== enumKeysExportScenario.ts ===
+// Test that export scenario with enum bracket notation doesn't crash
+// This tests the trackComputedName -> getFirstIdentifier path
+
+enum Type {
+>Type : Type
+>     : ^^^^
+
+    Foo = 'foo',
+>Foo : Type.Foo
+>    : ^^^^^^^^
+>'foo' : "foo"
+>      : ^^^^^
+
+    '3x14' = '3x14'
+>'3x14' : (typeof Type)["3x14"]
+>       : ^^^^^^^^^^^^^^^^^^^^^
+>'3x14' : "3x14"
+>       : ^^^^^^
+}
+
+// Export interface with bracket notation computed property
+// This should trigger the tracker path
+export interface TypeMap {
+    [Type['3x14']]: number;
+>[Type['3x14']] : number
+>               : ^^^^^^
+>Type['3x14'] : (typeof Type)["3x14"]
+>             : ^^^^^^^^^^^^^^^^^^^^^
+>Type : typeof Type
+>     : ^^^^^^^^^^^
+>'3x14' : "3x14"
+>       : ^^^^^^
+}
+
+export type TypeMap2 = {
+>TypeMap2 : TypeMap2
+>         : ^^^^^^^^
+
+    [Type['3x14']]: string;
+>[Type['3x14']] : string
+>               : ^^^^^^
+>Type['3x14'] : (typeof Type)["3x14"]
+>             : ^^^^^^^^^^^^^^^^^^^^^
+>Type : typeof Type
+>     : ^^^^^^^^^^^
+>'3x14' : "3x14"
+>       : ^^^^^^
+}
+