Function addDeclaration

test/fixtures/snapshot/typescript.js:164497–164502

(declaration)

            this.forEachChild(visit);
            return result;
            function addDeclaration(declaration) {
                var name = getDeclarationName(declaration);
                if (name) {
                    result.add(name, declaration);
                }
            }
            function getDeclarations(name) {
                var declarations = result.get(name);
                if (!declarations) {