Helper type to extract valid keys from container instance #3
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Given a container instance, I want to have interfaces that require a valid type from the container.
I could create MyServices type of valid keys, pass it to the container and then require a keyof MyServices.. but it's easier to allow the container to build the types and extract it from it:
```
interface MyServices {
foo: number;
bar: string;
}
type ValidServices = keyof MyServices;
interface Plugin {
key: ValidServices;
}
const container = new Container<MyServices>({})
```
vs
```
const container = new Container({})
type ValidServices = ContainerKeys<typeof container>;
interface Plugin {
key: ValidServices;
}
```
kburov-sc
reviewed
Sep 2, 2024
| type ReturnTypeOfFactories<T> = T extends { factories: infer R } ? R : never; | ||
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| /** | ||
| * Helper type for extracting valid keys from a container instance |
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Could you add a usage example here, please
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Given a container instance, I want to have interfaces that require a valid type from the container.
I could create MyServices type of valid keys, pass it to the container and then require a keyof MyServices.. but it's easier to allow the container to build the types and extract it from it:
vs
Similar to other helpers such as:
https://react-typescript-cheatsheet.netlify.app/docs/react-types/componentprops/#infer-component-props-type