Lock rxjs version to same version as @angular-devkit uses

[hlovdal]

Running

$ git clone https://github.com/briebug/jest-schematic
...
$ cd jest-schematic/
$ npm install
...
$ npm run build

results in error

src/jest/index.ts(46,3): error TS2322: Type '(tree: Tree, context: TypedSchematicContext<{}, {}>) => Observable<Tree>' is not assignable to type 'Rule'.
  Type 'Observable<Tree>' is not assignable to type 'void | Tree | Rule | Observable<Tree>'.
    Type 'import("C:/github/jest-schematic/node_modules/rxjs/internal/Observable").Observable<import("C:/github/jest-schematic/node_modules/@angular-devkit/schematics/src/tree/interface").Tree>' is not assignable to type 'import("C:/github/jest-schematic/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Observable").Observable<import("C:/github/jest-schematic/node_modules/@angular-devkit/schematics/src/tree/interface").Tree>'.
      Types of property 'source' are incompatible.
        Type 'import("C:/github/jest-schematic/node_modules/rxjs/internal/Observable").Observable<any>' is not assignable to type 'import("C:/github/jest-schematic/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Observable").Observable<any>'.
          Types of property 'operator' are incompatible.
            Type 'import("C:/github/jest-schematic/node_modules/rxjs/internal/Operator").Operator<any, any>' is not assignable to type 'import("C:/github/jest-schematic/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Operator").Operator<any, any>'.
              Types of property 'call' are incompatible.
                Type '(subscriber: import("C:/github/jest-schematic/node_modules/rxjs/internal/Subscriber").Subscriber<any>, source: any) => import("C:/github/jest-schematic/node_modules/rxjs/internal/types").TeardownLogic' is not assignable to type '(subscriber: import("C:/github/jest-schematic/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Subscriber").Subscriber<any>, source: any) => import("C:/github/jest-schematic/node_modules/@angular-devkit/core/node_modules/rxjs/internal/types").TeardownLogic'.
                  Types of parameters 'subscriber' and 'subscriber' are incompatible.
                    Property '_parentOrParents' is missing in type 'Subscriber<any>' but required in type 'Subscriber<any>'.

which is due to rxjs version incompatibilities between 6.3.3 and 6.5.3. So lock to 6.3.x.

[schuchard]

Hi @hlovdal, thanks for reporting. This should be resolved in the latest 2.0.0 release and on master. If you're still seeing issues please reopen. Thanks.