How do I call the node command in the global npm package in Node?

Sub-process calling system commands can be used to use NODE


const exec = require('child_process').exec;
const cmdStr = 'dtsgen -V';
exec(cmdStr, function(err,stdout,stderr){
    if(err) {
        console.log('get weather api error:'+stderr);
    } else {
        console.log(stdout);
    }
});

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