Node.js - spawn is cutting off the results

Question

I'm creating a node program to return the output of linux top command, is working fine the only issue is that the name of command is cutted, instead the full command name like /usr/local/libexec/netdata/plugins.d/apps.plugin 1 returns /usr/local+

My code

const topparser=require("topparser")
const spawn = require('child_process').spawn
let proc=null
let startTime=0

exports.start=function(pid_limit,callback){
    startTime=new Date().getTime()
    proc = spawn('top', ['-c','-b',"-d","3"])
    console.log("started process, pid: "+proc.pid)
    let top_data=""

    proc.stdout.on('data', function (data) {
      console.log('stdout: ' + data);
    })

    proc.on('close', function (code) {
      console.log('child process exited with code ' + code);
    });


}//start

exports.stop=function(){
    console.log("stoped process...")
    if(proc){proc.kill('SIGINT')}// SIGHUP -linux ,SIGINT -windows
}//stop

The results

14861 root      20   0       0      0      0 S   0.0  0.0   0:00.00 [kworker/1+
14864 root      20   0       0      0      0 S   0.0  0.0   0:00.02 [kworker/0+
15120 root      39  19  102488   3344   2656 S   0.0  0.1   0:00.09 /usr/bin/m+
16904 root      20   0       0      0      0 S   0.0  0.0   0:00.00 [kworker/0+
19031 root      20   0       0      0      0 S   0.0  0.0   0:00.00 [kworker/u+
21500 root      20   0       0      0      0 Z   0.0  0.0   0:00.00 [dsc] <def+
22571 root      20   0       0      0      0 S   0.0  0.0   0:00.00 [kworker/0+

Any way to fix it? Best regards

Answer 1

From a top manpage:

In Batch mode, when used without an argument top will format output using the COLUMNS= and LINES= environment variables, if set. Otherwise, width will be fixed at the maximum 512 columns. With an argument, output width can be decreased or increased (up to 512) but the number of rows is consid‐ ered unlimited.

Add '-w', '512' to the arguments.