Revereted to using [] for missing names.

Author: dragomirtitian

src/compiler/checker.ts

@@ -8554,7 +8554,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                     moduleName.symbol = symbol;
                     return moduleName;
                 }
-                if ((symbolNameSource && isIdentifier(symbolNameSource)) || canUsePropertyAccess(symbolName, languageVersion)) {
+                if ((symbolNameSource && isIdentifier(symbolNameSource) && getFullWidth(symbolNameSource) !== 0) || canUsePropertyAccess(symbolName, languageVersion)) {
                     const identifier = setEmitFlags(factory.createIdentifier(symbolName), EmitFlags.NoAsciiEscaping);
                     if (typeParameterNodes) setIdentifierTypeArguments(identifier, factory.createNodeArray<TypeNode | TypeParameterDeclaration>(typeParameterNodes));
                     identifier.symbol = symbol;

src/harness/typeWriter.ts

@@ -304,7 +304,7 @@ export class TypeWriterWalker {
         if (!symbol) {
             return;
         }
-        let symbolString = "Symbol(" + this.checker.symbolToString(symbol, node.parent, /*meaning*/ undefined, ts.SymbolFormatFlags.AllowAnyNodeKind);
+        let symbolString = "Symbol(" + this.checker.symbolToString(symbol, node.parent);
         if (symbol.declarations) {
             let count = 0;
             for (const declaration of symbol.declarations) {

tests/baselines/reference/MemberFunctionDeclaration4_es6.symbols

@@ -5,5 +5,5 @@ class C {
 >C : Symbol(C, Decl(MemberFunctionDeclaration4_es6.ts, 0, 0))
 
    *() { }
-> : Symbol(C.(Missing), Decl(MemberFunctionDeclaration4_es6.ts, 0, 9))
+> : Symbol(C[(Missing)], Decl(MemberFunctionDeclaration4_es6.ts, 0, 9))
 }

tests/baselines/reference/MemberFunctionDeclaration5_es6.symbols

@@ -6,5 +6,5 @@ class C {
 
    *
 }
-> : Symbol(C.(Missing), Decl(MemberFunctionDeclaration5_es6.ts, 0, 9))
+> : Symbol(C[(Missing)], Decl(MemberFunctionDeclaration5_es6.ts, 0, 9))
 

tests/baselines/reference/classMemberWithMissingIdentifier.symbols

@@ -5,5 +5,5 @@ class C {
 >C : Symbol(C, Decl(classMemberWithMissingIdentifier.ts, 0, 0))
 
     public {};
-> : Symbol(C.(Missing), Decl(classMemberWithMissingIdentifier.ts, 0, 9))
+> : Symbol(C[(Missing)], Decl(classMemberWithMissingIdentifier.ts, 0, 9))
 }

tests/baselines/reference/classMemberWithMissingIdentifier2.symbols

@@ -5,6 +5,6 @@ class C {
 >C : Symbol(C, Decl(classMemberWithMissingIdentifier2.ts, 0, 0))
 
     public {[name:string]:VariableDeclaration};
-> : Symbol(C.(Missing), Decl(classMemberWithMissingIdentifier2.ts, 0, 9))
+> : Symbol(C[(Missing)], Decl(classMemberWithMissingIdentifier2.ts, 0, 9))
 >name : Symbol(name, Decl(lib.dom.d.ts, --, --))
 }