Method _getObjectState

src/core/runtime/reactivity.js:198–207

* Get or create the reactive state object for any object. * Assigns a stable unique ID on first access. * @param {Object} obj - DOM element or plain JS object * @returns {{ id: string, subscriptions: Map|null }}

(obj)

     * @returns {{ id: string, subscriptions: Map|null }}
     */
    _getObjectState(obj) {
        var state = this._objectState.get(obj);
        if (!state) {
            this._objectState.set(obj, state = {
                id: String(++this._nextId),
                subscriptions: null,
            });
        }
        return state;
    }

    /**
     * Whether an effect is currently evaluating its expression().