17 lines
420 B
TypeScript
17 lines
420 B
TypeScript
export const createStore = <StateType>(initialState: StateType) => {
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let state: StateType = initialState
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const listeners = new Set<() => void>()
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return {
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getState: () => state,
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subscribe: (listener) => {
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listeners.add(listener)
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return () => {listeners.delete(listener)}
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},
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setState: (newState) => {
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state = newState
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listeners.forEach((listener) => listener())
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},
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}
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}
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