Support Angular6 - Cannot redeclare block-scoped variable 'ngDevMode'

[ijavid]

When using library in a Angular6 project the compilation fails on the following error:
ERROR in node_modules/@angular/core/src/render3/ng_dev_mode.d.ts(9,11): error TS2451: Cannot redeclare block-scoped variable 'ngDevMode'.

Root cause:
The Angular npm packages are read twice.

• First the projects Angular 6 packages
• Second angular-inline-editor's dependency (5.2.11)

Please release a new version which supports Angular6

[LouisMarzorati]

Late to the party but I was able to get this to work with Angular7 with one exception.
Adding this to your tsconfig.json under compilerOptions will prevent the Angular npm package from being read twice.

"paths": {
      "@angular/*": [
           "../node_modules/@angular/*" 
        ]
    }

The only exception is that it will not work with the AoT enabled, have not dug into the why but disabling AoT / build optimizer under the "build" config in the angular.json file.

 "configurations": {
     "production": {
               ...
              "aot": false,
              "buildOptimizer": false,
               ...
            }
          }

[leabdalla]

Same problem here with angular 7.2.2.
Your solution didn't worked.