Remove unused SymbolLinks properties (#58393)

Author: JoostK

src/compiler/checker.ts

@@ -780,7 +780,6 @@ import {
     JSDocAugmentsTag,
     JSDocCallbackTag,
     JSDocComment,
-    JSDocEnumTag,
     JSDocFunctionType,
     JSDocImplementsTag,
     JSDocImportTag,
@@ -1286,7 +1285,6 @@ const enum TypeSystemPropertyName {
     DeclaredType,
     ResolvedReturnType,
     ImmediateBaseConstraint,
-    EnumTagType,
     ResolvedTypeArguments,
     ResolvedBaseTypes,
     WriteType,
@@ -10507,8 +10505,6 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         switch (propertyName) {
             case TypeSystemPropertyName.Type:
                 return !!getSymbolLinks(target as Symbol).type;
-            case TypeSystemPropertyName.EnumTagType:
-                return !!(getNodeLinks(target as JSDocEnumTag).resolvedEnumType);
             case TypeSystemPropertyName.DeclaredType:
                 return !!getSymbolLinks(target as Symbol).declaredType;
             case TypeSystemPropertyName.ResolvedBaseConstructorType:

src/compiler/types.ts

@@ -5918,10 +5918,7 @@ export interface SymbolLinks {
     uniqueESSymbolType?: Type;                  // UniqueESSymbol type for a symbol
     declaredType?: Type;                        // Type of class, interface, enum, type alias, or type parameter
     typeParameters?: TypeParameter[];           // Type parameters of type alias (undefined if non-generic)
-    outerTypeParameters?: TypeParameter[];      // Outer type parameters of anonymous object type
     instantiations?: Map<string, Type>;         // Instantiations of generic type alias (undefined if non-generic)
-    aliasSymbol?: Symbol;                       // Alias associated with generic type alias instantiation
-    aliasTypeArguments?: readonly Type[]        // Alias type arguments (if any)
     inferredClassSymbol?: Map<SymbolId, TransientSymbol>; // Symbol of an inferred ES5 constructor function
     mapper?: TypeMapper;                        // Type mapper for instantiation alias
     referenced?: boolean;                       // True if alias symbol has been referenced as a value that can be emitted
@@ -5936,8 +5933,6 @@ export interface SymbolLinks {
     typeParametersChecked?: boolean;            // True if type parameters of merged class and interface declarations have been checked.
     isDeclarationWithCollidingName?: boolean;   // True if symbol is block scoped redeclaration
     bindingElement?: BindingElement;            // Binding element associated with property symbol
-    exportsSomeValue?: boolean;                 // True if module exports some value (not just types)
-    enumKind?: EnumKind;                        // Enum declaration classification
     originatingImport?: ImportDeclaration | ImportCall; // Import declaration which produced the symbol, present if the symbol is marked as uncallable but had call signatures in `resolveESModuleSymbol`
     lateSymbol?: Symbol;                        // Late-bound symbol for a computed property
     specifierCache?: Map<ModeAwareCacheKey, string>; // For symbols corresponding to external modules, a cache of incoming path -> module specifier name mappings
@@ -5957,12 +5952,6 @@ export interface SymbolLinks {
     filteredIndexSymbolCache?: Map<string, Symbol> //Symbol with applicable declarations
 }
 
-/** @internal */
-export const enum EnumKind {
-    Numeric, // Numeric enum (each member has a TypeFlags.Enum type)
-    Literal, // Literal enum (each member has a TypeFlags.EnumLiteral type)
-}
-
 // dprint-ignore
 /** @internal */
 export const enum CheckFlags {
@@ -6119,7 +6108,6 @@ export interface EvaluatorResult<T extends string | number | undefined = string
 export interface NodeLinks {
     flags: NodeCheckFlags;              // Set of flags specific to Node
     resolvedType?: Type;                // Cached type of type node
-    resolvedEnumType?: Type;            // Cached constraint type from enum jsdoc tag
     resolvedSignature?: Signature;      // Cached signature of signature node or call expression
     resolvedSymbol?: Symbol;            // Cached name resolution result
     resolvedIndexInfo?: IndexInfo;      // Cached indexing info resolution result