Do not rename a node if known global name refers to this a symbol of …

…that node

Fixes #297

src/collisions-resolver.ts

@@ -5,7 +5,7 @@ import {
 	getClosestModuleLikeNode,
 	getDeclarationNameSymbol,
 	getDeclarationsForSymbol,
-	hasGlobalName,
+	resolveGlobalName,
 } from './helpers/typescript';
 import { verboseLog } from './logger';
 
@@ -250,9 +250,12 @@ export class CollisionsResolver {
 
 		let nameIndex = collisionSymbols.size;
 		let newName = collisionSymbols.size === 0 ? symbolName : `${symbolName}$${nameIndex}`;
-		while (hasGlobalName(this.typeChecker, newName)) {
+
+		let resolvedGlobalSymbol = resolveGlobalName(this.typeChecker, newName);
+		while (resolvedGlobalSymbol !== undefined && resolvedGlobalSymbol !== identifierSymbol) {
 			nameIndex += 1;
 			newName = `${symbolName}$${nameIndex}`;
+			resolvedGlobalSymbol = resolveGlobalName(this.typeChecker, newName);
 		}
 
 		collisionSymbols.set(identifierSymbol, newName);

src/helpers/typescript.ts

@@ -655,7 +655,7 @@ export function getDeclarationsForExportedValues(exp: ts.ExportAssignment | ts.E
 	return getDeclarationsForSymbol(symbol);
 }
 
-export function hasGlobalName(typeChecker: ts.TypeChecker, name: string): boolean {
+export function resolveGlobalName(typeChecker: ts.TypeChecker, name: string): ts.Symbol | undefined {
 	interface Ts54CompatTypeChecker extends ts.TypeChecker {
 		resolveName(name: string, location: ts.Node | undefined, meaning: ts.SymbolFlags, excludeGlobals: boolean): ts.Symbol | undefined;
 	}
@@ -664,5 +664,5 @@ export function hasGlobalName(typeChecker: ts.TypeChecker, name: string): boolea
 	const tsSymbolFlagsAll = /* ts.SymbolFlags.All */ -1 as ts.SymbolFlags;
 
 	// see https://github.com/microsoft/TypeScript/pull/56932
-	return (typeChecker as Ts54CompatTypeChecker).resolveName(name, undefined, tsSymbolFlagsAll, false) !== undefined;
+	return (typeChecker as Ts54CompatTypeChecker).resolveName(name, undefined, tsSymbolFlagsAll, false);
 }

tests/e2e/test-cases/export-wrapped-with-namespace-export-eq-inline/output.d.ts

@@ -4,10 +4,10 @@ declare namespace MyModule {
 		field2: number;
 	}
 }
-interface LibInterface$1 {
+interface LibInterface {
 	field: number;
 }
-export const myLib: LibInterface$1;
+export const myLib: LibInterface;
 
 export {
 	MyModule as newName,