Function update

test/fixtures/snapshot/typescript.js:42859–42861

(options)

            directoryToModuleNameMap.clear();
        }
        function update(options) {
            updateRedirectsMap(options, directoryToModuleNameMap);
        }
        function getOrCreateCacheForDirectory(directoryName, redirectedReference) {
            var path = ts.toPath(directoryName, currentDirectory, getCanonicalFileName);
            return getOrCreateCache(directoryToModuleNameMap, redirectedReference, path, function () { return createModeAwareCache(); });