# Store Options

You can provide an `NgxsModuleOptions` object as the second argument of your `NgxsModule.forRoot` call. The following options are available:

* `developmentMode` - Setting this to `true` will add additional debugging features that are useful for development time. This includes freezing your state and actions to guarantee immutability. (Default value is `false`). It makes sense to use it only during development to ensure there're no state mutations. When building for production, the `Object.freeze` will be tree-shaken away.
* `selectorOptions` - A nested options object for providing a global options setting to be used for selectors. This can be overridden at the class or specific selector method level using the `SelectorOptions` decorator. The following options are available:
  * `suppressErrors` - Setting this to `true` will cause any error within a selector to result in the selector returning `undefined`. Setting this to `false` results in these errors propagating through the stack that triggered the evaluation of the selector that caused the error. (Default value is `false`).
  * `injectContainerState` ([TO BE DEPRECATED](https://www.ngxs.io/master/deprecations/inject-container-state-deprecation)) - Setting this to `true` will inject the container state model as the first parameter of a selector method (defined within a state class) that joins to other selectors for its parameters. Note: This property should not be explicitly set by anyone using versions of NGXS after v3; it only exists for migrating codebases from v3 to versions after v3. See the deprecation notice for further details.
* `compatibility` - A nested options object that allows for the following compatibility options:
  * `strictContentSecurityPolicy` - Set this to `true` in order to enable support for pages where a Strict Content Security Policy has been enabled. This setting circumvent some optimisations that violate a strict CSP through the use of `new Function(...)`. (Default value is `false`)

`ngxs.config.ts`:

> :warning: If your project lacks environment files, you can generate them using the `ng generate environments` command.

```ts
import { NgxsModuleOptions } from '@ngxs/store';

import { environment } from '../environments/environment';

export const ngxsConfig: NgxsModuleOptions = {
  developmentMode: !environment.production,
  selectorOptions: {
    suppressErrors: false
  },
  compatibility: {
    strictContentSecurityPolicy: true
  }
};
```

`app.config.ts`:

```ts
import { provideStore } from '@ngxs/store';

import { ngxsConfig } from './ngxs.config';

export const appConfig: ApplicationConfig = {
  providers: [provideStore(states, ngxsConfig)]
};
```