`angularCompilerOptions.strictTemplates` in `tsconfig.app.json` generates `error TS2741: Property 'options' is missing in type 'ITreeOptions' but required in type 'TreeOptions'`

[KeithGillette]

AOT build under Angular 9 with angularCompilerOptions.strictTemplates: true in tsconfig.app.json generates error TS2741: Property 'options' is missing in type 'ITreeOptions' but required in type 'TreeOptions' because the @Input options is incorrectly typed as TreeOptions in the code, requiring a full TreeOptions object to be passed from the controller binding, though the documentation clearly states the @Input options is an object of type ITreeOptions, which is a partial of TreeOptions.