The virtualfs Host was only used for exist and directory checks during asset and file replacement option normalization within the browser and dev-server builders.
This is another feature that we mentioned in the Eliminate Render Blocking Requests RFC (#18730)
Inlining of critical CSS is turned off by default. To opt-in this feature set `inlineCritical` to `true`.
Example:
```json
"configurations": {
"production": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"optimization": {
"styles": {
"minify": true,
"inlineCritical": true,
}
},
```
To learn more about critical CSS see;
https://web.dev/defer-non-critical-csshttps://web.dev/extract-critical-css/
In a future version of the Angular CLI `inlineCritical` will be enabled by default.
Closes: #17966Closes: #11395Closes: #19445
BREAKING CHANGE:
The following deprecated devkit builders options have been removed:
- `skipAppShell:` This has no effect
- `evalSourceMap`: This done to improve performance in older versions of the CLI and is no longer needed
- `vendorSourceMap`: Use `sourceMap.vendor` instead
- `profile`: Use `NG_BUILD_PROFILING` environment variable instead
`--poll` is a valid command line option (vs. `--poll 1000`). This however will result in a value of 0 which causes polling to be disabled rather than enabled. This change sets a default value of 500 when the commandline flag is used.
Remove the manually maintained schema.d.ts from the browser builder, and use
the Schema JSON file to generate it. This had a lot of repercussions around
the whole build-angular code base and the different interfaces that were
manually kept.
