TypeError: process.memoryUsage is not a function.

[Electroid]

 95 |         outbytes: this.stat.outbytes + sinfo.outbytes,
 96 |       },
 97 |       nodejs: {
 98 |         uptime: Math.floor(process.uptime()),
 99 |         version: process.version,
100 |         mem: process.memoryUsage()
                 ^
TypeError: process.memoryUsage is not a function. (In 'process.memoryUsage()', 'process.memoryUsage' is undefined)
      at /node_modules/node-media-server/src/api/controllers/server.js:100:13