Method addValue_

packages/mobx/src/types/observablemap.ts:247–283

(key: K, newValue: V)

    }

    private addValue_(key: K, newValue: V) {
        checkIfStateModificationsAreAllowed(this.keysAtom_)
        transaction(() => {
            const observable = new ObservableValue(
                newValue,
                this.enhancer_,
                __DEV__ ? `${this.name_}.${stringifyKey(key)}` : "ObservableMap.key",
                false
            )
            this.data_.set(key, observable)
            newValue = (observable as any).value_ // value might have been changed
            this.hasMap_.get(key)?.setNewValue_(true)
            this.keysAtom_.reportChanged()
        })
        const notifySpy = isSpyEnabled()
        const notify = hasListeners(this)
        const change: IMapDidChange<K, V> | null =
            notify || notifySpy
                ? {
                      observableKind: "map",
                      debugObjectName: this.name_,
                      type: ADD,
                      object: this,
                      name: key,
                      newValue
                  }
                : null
        if (__DEV__ && notifySpy) {
            spyReportStart(change! as PureSpyEvent)
        } // TODO fix type
        if (notify) {
            notifyListeners(this, change)
        }
        if (__DEV__ && notifySpy) {
            spyReportEnd()
        }
    }

    get(key: K): V | undefined {
        if (this.has(key)) {