converse-built/node_modules/localforage-driver-memory/_bundle/esm5/iterate.js

import { executeCallback } from 'localforage-driver-commons';
export function iterate(iterator, callback) {
    var _this = this;
    var promise = this.ready().then(function () {
        var store = _this._dbInfo.mStore;
        var keys = store.keys();
        for (var i = 0; i < keys.length; i++) {
            var value = store.get(keys[i]);
            // If a result was found, parse it from the serialized
            // string into a JS object. If result isn't truthy, the
            // key is likely undefined and we'll pass it straight
            // to the iterator.
            if (value) {
                value = _this._dbInfo.serializer.deserialize(value);
            }
            value = iterator(value, keys[i], i + 1);
            if (value !== undefined) {
                return value;
            }
        }
    });
    executeCallback(promise, callback);
    return promise;
}
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