Angular 5.0.0-rc.1 已发布，该版本的更新内容包括 bug 修复和性能改进，具体如下： Bug 修复 compiler: always emit summaries for jit with ng_module bazel rule. (1058b2a) don’t rely on goog.DEBUG but on COMPILED instead (db74f44) compiler: add typings for COMPILED. (0038712) compiler: also count generated files to determine whether to use single file emit (7c5ecb5) compiler: disallow references for select and index evaluation (f3f4c3d) compiler: don’t use ng:// in AOT source maps, and never point to the original source file (01f7112), closes #19538 compiler: only don’t emit already emitted files in incremental compilation (caa5195) compiler: properly work on windows (696af79), closes #19492 compiler: set emitSkipped to false for incremental compilation (c412913) service-worker: several misc fixes for corner cases (f10f8db) upgrade: call ngOnInit() after ngOnChanges() (on components with inputs) (eef7d8a), closes #18913 upgrade: correctly run change detection when propagateDigest is false (617b3d2) upgrade: ensure downgraded components are destroyed in the Angular zone (4e6aa9c) 性能改进 compiler: don’t emit summaries for jit by default (b086891) compiler: fix perf issue in loading aot summaries in jit compiler (fbc9537) compiler: only emit changed files for incremental compilation (745b59f) 具体更新内容请参阅更新日志。 下载地址： Source code (zip) Source code (tar.gz) 官方表示 Angular 5 正式版预计将于 10 月 23 日发布。 Angular 5.0.0-rc.1 发布，bug 修复和性能改进下载地址
