How to use the rethinkdb-ts.r.do function in rethinkdb-ts
To help you get started, we’ve selected a few rethinkdb-ts examples, based on popular ways it is used in public projects.
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rethinkdb / rethinkdb-desktop / app / main / db / queries / stats.js View on Github 
const getServerStats = () => {
const serverConfig = sysTable('server_config')
const serverStatus = sysTable('server_status')
const tableConfig = sysTable('table_config')
return r
.do(
serverConfig.nth(0),
// All connected servers
serverStatus('name').coerceTo('array'),
// All servers assigned to tables
tableConfig
.concatMap(row => row('shards').default([]))
.concatMap(row => row('replicas'))
.distinct(),
(server, connectedServers, assignedServers) => ({
server,
serversConnected: connectedServers.count(),
serversMissing: assignedServers.setDifference(connectedServers),
unknownMissing: tableConfig
.filter(row => row.hasFields('shards').not())('name')
.isEmpty()
