Method setItem

dash/dash-renderer/src/persistence.js:125–138

(key, value, dispatch)

     * dispatch as a parameter, so it can report OOM to devtools
     */
    setItem(key, value, dispatch) {
        try {
            this._setItem(key, value);
        } catch (e) {
            dispatch(
                err(
                    `${key} failed to save in ${this._name}. Persisted props may be lost.`
                )
            );
            // TODO: at some point we may want to convert this to fall back
            // on memory, pulling out all persistence keys and putting them
            // in a MemStore that gets used from then onward.
        }
    }

    removeItem(key) {
        this._storage.removeItem(storePrefix + key);