@grail-ui/svelte/dist/util/store.js

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import { writable } from 'svelte/store';
export function toReadable(store) {
    return { subscribe: store.subscribe };
}
export function writableEffect(current, fn) {
    const store = writable(current);
    const { subscribe, set } = store;
    const _set = (value) => {
        if (value === current)
            return;
        current = value;
        set(value);
        fn?.(value);
    };
    const _update = (updater) => {
        _set(updater(current));
    };
    return { subscribe, set: _set, update: _update };
}