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22 lines
588 B
22 lines
588 B
6 years ago
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---
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title: Custom stores
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---
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As long as an object correctly implements the `subscribe` method, it's a store. Beyond that, anything goes. It's very easy, therefore, to create custom stores with domain-specific logic.
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For example, the `count` store from our earlier example could include `increment`, `decrement` and `reset` methods and avoid exposing `set` and `update`:
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```js
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function createCount() {
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const { subscribe, set, update } = writable(0);
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return {
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subscribe,
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increment: () => update(n => n + 1),
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decrement: () => update(n => n - 1),
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reset: () => set(0)
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};
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}
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```
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