Instead of getSymbolAtLocation use resolveExternalModuleName without error reporting

Author: sheetalkamat

src/compiler/checker.ts

@@ -28090,7 +28090,7 @@ namespace ts {
                         getAccessor
                     };
                 },
-                getSymbolAtLocation
+                getSymbolOfExternalModuleSpecifier: moduleName => resolveExternalModuleNameWorker(moduleName, moduleName, /*moduleNotFoundError*/ undefined)
             };
 
             function isInHeritageClause(node: PropertyAccessEntityNameExpression) {

src/compiler/transformers/declarations.ts

@@ -500,7 +500,7 @@ namespace ts {
                     }
                 }
                 else {
-                    const symbol = resolver.getSymbolAtLocation(input);
+                    const symbol = resolver.getSymbolOfExternalModuleSpecifier(input);
                     if (symbol) {
                         (exportedModulesFromDeclarationEmit || (exportedModulesFromDeclarationEmit = [])).push(symbol);
                     }

src/compiler/types.ts

@@ -3387,7 +3387,7 @@ namespace ts {
         isLiteralConstDeclaration(node: VariableDeclaration | PropertyDeclaration | PropertySignature | ParameterDeclaration): boolean;
         getJsxFactoryEntity(location?: Node): EntityName | undefined;
         getAllAccessorDeclarations(declaration: AccessorDeclaration): AllAccessorDeclarations;
-        getSymbolAtLocation(node: Node): Symbol | undefined;
+        getSymbolOfExternalModuleSpecifier(node: StringLiteralLike): Symbol | undefined;
     }
 
     export const enum SymbolFlags {