Function markSymbolOfAliasDeclarationIfTypeOnly

test/fixtures/snapshot/typescript.js:50864–50878

* Marks a symbol as type-only if its declaration is syntactically type-only. * If it is not itself marked type-only, but resolves to a type-only alias * somewhere in its resolution chain, save a reference to the type-only alias declaration * so the alias _not_ marked type-

(aliasDeclaration, immediateTarget, finalTarget, overwriteEmpty)

         * must still be checked for a type-only marker, overwriting the previous negative result if found.
         */
        function markSymbolOfAliasDeclarationIfTypeOnly(aliasDeclaration, immediateTarget, finalTarget, overwriteEmpty) {
            if (!aliasDeclaration || ts.isPropertyAccessExpression(aliasDeclaration))
                return false;
            // If the declaration itself is type-only, mark it and return.
            // No need to check what it resolves to.
            var sourceSymbol = getSymbolOfNode(aliasDeclaration);
            if (ts.isTypeOnlyImportOrExportDeclaration(aliasDeclaration)) {
                var links_1 = getSymbolLinks(sourceSymbol);
                links_1.typeOnlyDeclaration = aliasDeclaration;
                return true;
            }
            var links = getSymbolLinks(sourceSymbol);
            return markSymbolOfAliasDeclarationIfTypeOnlyWorker(links, immediateTarget, overwriteEmpty)
                || markSymbolOfAliasDeclarationIfTypeOnlyWorker(links, finalTarget, overwriteEmpty);
        }
        function markSymbolOfAliasDeclarationIfTypeOnlyWorker(aliasDeclarationLinks, target, overwriteEmpty) {
            var _a, _b, _c;
            if (target && (aliasDeclarationLinks.typeOnlyDeclaration === undefined || overwriteEmpty && aliasDeclarationLinks.typeOnlyDeclaration === false)) {