我正在使用EasyLocalization,mobx等JsonSerializable。要生成*.g.dart文件，我正在使用build_runner watch或中的脚本 scripts/build.sh：
flutter packages pub run build_runner build
最多需要2 秒，但突然间开始需要至少10 秒，有时甚至是30 秒。由于这种情况，build_runner watch变得无用，我的意思是从那时起它就不能正常工作。
运行脚本时控制台上的输出：
$ sh scripts/build.sh
[INFO] Generating build script...
[INFO] Generating build script completed, took 611ms
[INFO] Initializing inputs
[INFO] Reading cached asset graph...
[INFO] Reading cached asset graph completed, took 126ms
[INFO] Checking for updates since last build...
[INFO] Checking for updates since last build completed, took 745ms
[INFO] Running build...
[INFO] 1.2s elapsed, 0/16 actions completed.
[INFO] 2.2s elapsed, 0/16 actions completed.
[INFO] 3.3s elapsed, 0/16 actions completed.
[INFO] 12.5s elapsed, 1/17 actions completed.
[INFO] 13.6s elapsed, 4/20 actions completed.
[INFO] Running build completed, took 14.6s
[INFO] Caching finalized dependency graph...
[INFO] Caching finalized dependency graph completed, took 57ms
[INFO] Succeeded after 14.6s with 2 outputs (47 actions)