@chasemoskal/magical/x/view/initialize-and-get-state.js

web toolkit for lit apps

export function initializeAndGetState({ initial, stateIndex, stateMap, }) {
    const initialized = stateMap.has(stateIndex);
    if (!initialized)
        stateMap.set(stateIndex, [
            (typeof initial === "function")
                ? initial()
                : initial,
            undefined,
        ]);
    return stateMap.get(stateIndex);
}
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