3de3c8cb36
- matrix-gateway: POST /internal/matrix/presence/online endpoint - usePresenceHeartbeat hook with activity tracking - Auto away after 5 min inactivity - Offline on page close/visibility change - Integrated in MatrixChatRoom component
is-core-module 
Is this specifier a node.js core module? Optionally provide a node version to check; defaults to the current node version.
Example
var isCore = require('is-core-module');
var assert = require('assert');
assert(isCore('fs'));
assert(!isCore('butts'));
Tests
Clone the repo, npm install, and run npm test