Changing a client file

webpack building...-- restarting...
webpack built 89f8a656fce1a0f79666 in 8452ms \
| (#3) Profiling: ProjectContext prepareProjectForBuild
|  Preparing to build package webpack:we...  |
| ProjectContext prepareProjectForBuild...........................829 ms (1)
| ├─ _initializeCatalog                                           120 ms (1)
| ├─ _downloadMissingPackages.....................................579 ms (1)
| │  ├─ Isopack.readMetadataFromDirectory.........................506 ms (124)
| │  │  ├─ files.exists                                           129 ms (124)
| │  │  └─ files.readFile                                         365 ms (124)
| │  └─ other _downloadMissingPackages                             73 ms
| └─ _buildLocalPackages..........................................110 ms (1)
|    └─ IsopackCache Build local isopack...........................96 ms (11)
|       └─ watch.isUpToDate........................................88 ms (11)
|          └─ files.readFile                                       71 ms (149)
| 
| Top leaves:
| files.readFile.............................................473 ms (297)
| files.exists...............................................156 ms (136)
| 
| (#3) Total: 829 ms (ProjectContext prepareProjectForBuild)
| 
| (#4) Profiling: Rebuild App
|  Building the application                  /
| files.readFile                                                    3 ms (1)
| files.exists                                                      0 ms (2)
| Rebuild App..................................................26,419 ms (1)
| ├─ compiler.compile(the app)....................................282 ms (1)
| │  └─ compileUnibuild (the app).................................282 ms (2)
| │     ├─ files.readdir                                           65 ms (110)
| │     ├─ files.realpath                                          65 ms (54)
| │     ├─ files.readFile                                          74 ms (169)
| │     └─ other compileUnibuild (the app)                         59 ms
| ├─ bundler.bundle..makeClientTarget..........................14,093 ms (1)
| │  └─ Target#make............................................14,093 ms (1)
| │     ├─ Target#_runCompilerPlugins..........................13,698 ms (1)
| │     │  ├─ files.realpath                                      174 ms (105)
| │     │  ├─ plugin ecmascript....................................99 ms (2)
| │     │  │  └─ Babel.compile                                     59 ms (59)
| │     │  ├─ plugin webpack:webpack...........................13,326 ms (1)
| │     │  │  ├─ wrapped.fs.readdirSync                         9,323 ms (8691)
| │     │  │  ├─ wrapped.fs.statSync                            1,793 ms (98492)
| │     │  │  └─ other plugin webpack:webpack                   2,169 ms
| │     │  └─ other Target#_runCompilerPlugins                     65 ms
| │     ├─ Target#_emitResources..................................227 ms (1)
| │     │  └─ PackageSourceBatch.computeJsOutputFilesMap..........205 ms (1)
| │     │     └─ ImportScanner#_readFile..........................121 ms (116)
| │     │        └─ files.readFile                                116 ms (116)
| │     └─ ClientTarget#minifyCss.................................113 ms (1)
| │        └─ mergeCss                                            104 ms (1)
| ├─ bundler.bundle..makeServerTarget..........................10,637 ms (1)
| │  └─ Target#make............................................10,637 ms (1)
| │     ├─ Target#_runCompilerPlugins..........................10,407 ms (1)
| │     │  ├─ files.realpath                                      174 ms (114)
| │     │  ├─ plugin ecmascript....................................98 ms (2)
| │     │  │  └─ Babel.compile                                     61 ms (63)
| │     │  ├─ plugin webpack:webpack...........................10,060 ms (1)
| │     │  │  ├─ wrapped.fs.readdirSync                         5,446 ms (8691)
| │     │  │  ├─ wrapped.fs.statSync                            1,960 ms (98492)
| │     │  │  └─ other plugin webpack:webpack                   2,609 ms
| │     │  └─ other Target#_runCompilerPlugins                     54 ms
| │     └─ Target#_emitResources..................................199 ms (1)
| │        └─ PackageSourceBatch.computeJsOutputFilesMap..........183 ms (1)
| │           ├─ ImportScanner#_tryToResolveImportedPath           76 ms (356)
| │           └─ ImportScanner#_readFile...........................73 ms (112)
| │              └─ files.readFile                                 68 ms (112)
| └─ bundler writeSiteArchive...................................1,400 ms (1)
|    └─ bundler writeTargetToPath...............................1,356 ms (2)
|       ├─ ClientTarget#write                                     118 ms (1)
|       └─ ServerTarget#write...................................1,235 ms (1)
|          ├─ JsImage#write.....................................1,150 ms (1)
|          │  ├─ Builder#copyDirectory............................913 ms (21)
|          │  │  └─ files.rm_recursive                            866 ms (21)
|          │  └─ other JsImage#write                              199 ms
|          └─ other ServerTarget#write                             71 ms
| 
| Top leaves:
| wrapped.fs.readdirSync..................................14,769 ms (17382)
| other plugin webpack:webpack.............................4,778 ms (2)
| wrapped.fs.statSync......................................3,754 ms (196984)
| files.rm_recursive.........................................866 ms (22)
| files.realpath.............................................413 ms (273)
| files.readFile.............................................355 ms (411)
| other JsImage#write........................................199 ms (1)
| Babel.compile..............................................120 ms (122)
| other Target#_runCompilerPlugins...........................119 ms (2)
| 
| (#4) Total: 26,423 ms (Rebuild App)