@instantdb/core
Version:
Instant's core local abstraction
56 lines • 2.28 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.buildPresenceSlice = buildPresenceSlice;
exports.hasPresenceResponseChanged = hasPresenceResponseChanged;
const pick_js_1 = require("./utils/pick.js");
const object_js_1 = require("./utils/object.js");
function buildPresenceSlice(data, opts, userPeerId) {
var _a, _b;
const slice = {
peers: {},
};
const includeUser = opts && 'user' in opts ? opts.user : true;
if (includeUser) {
const user = (0, pick_js_1.pick)((_a = data.user) !== null && _a !== void 0 ? _a : {}, opts === null || opts === void 0 ? void 0 : opts.keys);
slice.user = Object.assign(Object.assign({}, user), { peerId: userPeerId });
}
for (const id of Object.keys((_b = data.peers) !== null && _b !== void 0 ? _b : {})) {
const shouldIncludeAllPeers = (opts === null || opts === void 0 ? void 0 : opts.peers) === undefined;
const isPeerIncluded = Array.isArray(opts === null || opts === void 0 ? void 0 : opts.peers) && (opts === null || opts === void 0 ? void 0 : opts.peers.includes(id));
if (shouldIncludeAllPeers || isPeerIncluded) {
const peer = (0, pick_js_1.pick)(data.peers[id], opts === null || opts === void 0 ? void 0 : opts.keys);
slice.peers[id] = Object.assign(Object.assign({}, peer), { peerId: id });
}
}
return slice;
}
/**
* Compare two presence slices
* 0. compare isLoading and error
* 1. shallow compare user
* 2. compare peers keys
* 3. shallow compare each peer
*/
function hasPresenceResponseChanged(a, b) {
if (a.isLoading !== b.isLoading)
return true;
if (a.error !== b.error)
return true;
if (a.user || b.user) {
if (!a.user || !b.user)
return true;
const same = (0, object_js_1.areObjectsShallowEqual)(a.user, b.user);
if (!same)
return true;
}
const sameKeys = (0, object_js_1.areObjectKeysEqual)(a.peers, b.peers);
if (!sameKeys)
return true;
for (const id of Object.keys(a.peers)) {
const same = (0, object_js_1.areObjectsShallowEqual)(a.peers[id], b.peers[id]);
if (!same)
return true;
}
return false;
}
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