HMR. Serve error "Data path "" should NOT have additional properties(fileReplacements)"

[Dok11]

Bug Report or Feature Request (mark with an x)

- [x] bug report -> please search issues before submitting

Area

- [x] schematics

Versions

node v8.9.4
npm 5.6.0

Repro steps

In making step from https://github.com/angular/angular-cli/wiki/stories-configure-hmr

I set my angular.json like this:

The log given by the failure

> ng serve --port 4260 --proxy-config proxy.conf.json --aot --source-map --progress false --configuration hmr

Schema validation failed with the following errors:
  Data path "" should NOT have additional properties(fileReplacements).
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! main@0.0.0 start-hmr: `ng serve --port 4260 --proxy-config proxy.conf.json --aot --source-map --progress false --configuration hmr`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the main@0.0.0 start-hmr script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

[hansl]

The serve builder does not accept fileReplacements. You need to have a build configuration and use that target in the serve configuration you want to use.

Closing this as answered.

[Bengreen]

@hansl Any hints available on how to do this ?

[Dok11]

@Bengreen yes, I made little notice about this. See here https://gist.github.com/Dok11/cc30759099376d9263fe4edfd0d13341

[joker-danta]

Angular CLI: 7.1.3 Node: 10.13.0 Angular: 7.1.3 npm run hmr
error
`
Schema validation failed with the following errors:
Data path "['build']" should NOT have additional properties(hmr).
Error: Schema validation failed with the following errors:
Data path "['build']" should NOT have additional properties(hmr).

`
step is link

[hamzazaidi]

I am getting the following error
Schema validation failed with the following errors:
Data path "['build']" should NOT have additional properties(hmr).
Error: Schema validation failed with the following errors:
Data path "['build']" should NOT have additional properties(hmr).

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