Function makeObservable

packages/mobx/src/api/makeObservable.ts:27–46

(
    target: T,
    annotations?: AnnotationsMap<T, NoInfer<AdditionalKeys>>,
    options?: MakeObservableOptions
)

type MakeObservableOptions = Omit<CreateObservableOptions, "proxy">

export function makeObservable<T extends object, AdditionalKeys extends PropertyKey = never>(
    target: T,
    annotations?: AnnotationsMap<T, NoInfer<AdditionalKeys>>,
    options?: MakeObservableOptions
): T {
    initObservable(() => {
        const adm: ObservableObjectAdministration = asObservableObject(target, options)[$mobx]
        if (__DEV__ && annotations && target[storedAnnotationsSymbol]) {
            die(
                `makeObservable second arg must be nullish when using decorators. Mixing @decorator syntax with annotations is not supported.`
            )
        }
        // Default to decorators
        annotations ??= collectStoredAnnotations(target)

        // Annotate
        ownKeys(annotations).forEach(key => adm.make_(key, annotations![key]))
    })
    return target
}

// proto[keysSymbol] = new Set<PropertyKey>()
const keysSymbol = Symbol("mobx-keys")