Function storage

core/src/storage.js:34–72

(name)

// this export simulate pyscript.storage exposed in the Python world
export const storage = async (name) => {
    if (!name) throw new SyntaxError("The storage name must be defined");

    const store = new IDBMapSync(`@pyscript/${name}`);
    const map = new Map();
    await store.sync();
    for (const [k, v] of store.entries()) map.set(k, from_idb(v));

    const clear = () => {
        map.clear();
        store.clear();
    };

    const sync = async () => {
        await store.sync();
    };

    return new Proxy(map, {
        ownKeys: (map) => [...map.keys()],
        has: (map, name) => map.has(name),
        get: (map, name) => {
            if (name === "clear") return clear;
            if (name === "sync") return sync;
            return map.get(name);
        },
        set: (map, name, value) => {
            map.set(name, value);
            store.set(name, to_idb(value));
            return true;
        },
        deleteProperty: (map, name) => {
            if (map.has(name)) {
                map.delete(name);
                store.delete(name);
            }
            return true;
        },
    });
};