svelte-ux/stores/localStore.js

- Increment version in `package.json` and commit as `Version bump to x.y.z` - `npm run publish`

import { writable } from 'svelte/store';
import { isFunction } from 'lodash-es';
import { decode, encode } from '../utils/json';
import { expireObject } from '../utils/object';
import { browser } from '../utils/env';
function localStore(key, initialValue, options) {
    var _a;
    let value = initialValue;
    let previousExpiry = null;
    if ((options === null || options === void 0 ? void 0 : options.override) != null) {
        value = options === null || options === void 0 ? void 0 : options.override;
    }
    else {
        const storedValue = browser ? localStorage.getItem(key) : null;
        if (storedValue !== null) {
            const decodedValue = decode(storedValue);
            if (options === null || options === void 0 ? void 0 : options.expiry) {
                // TODO: if object returned, merge with initialValue (sub-properties)?
                value = (_a = expireObject(decodedValue.value, decodedValue.expiry)) !== null && _a !== void 0 ? _a : initialValue;
                previousExpiry = decodedValue.expiry;
            }
            else {
                value = decodedValue;
            }
        }
    }
    const store = writable(value);
    if (browser) {
        store.subscribe((val) => {
            if (options === null || options === void 0 ? void 0 : options.expiry) {
                // Remove all expired expiry
                const prunedPreviousExpiry = previousExpiry
                    ? expireObject(previousExpiry, previousExpiry)
                    : previousExpiry;
                const expiry = isFunction(options === null || options === void 0 ? void 0 : options.expiry)
                    ? options === null || options === void 0 ? void 0 : options.expiry(prunedPreviousExpiry) // Update expiry on write
                    : options === null || options === void 0 ? void 0 : options.expiry;
                previousExpiry = expiry;
                localStorage.setItem(key, encode({ value: val, expiry }));
            }
            else {
                localStorage.setItem(key, encode(val));
            }
        });
    }
    return store;
}
export default localStore;