Node.js 如果通过'；启动，PM2读取的内存不正确；npm启动'；

PM2版本0.36.0 NodeJS版本15.0.1

结构

pm2.config.js
testpm2
├── index.js
└── package.json

pm2.config.js

module.exports ={
    "apps": [
        {
            "name": "my-test-app",
            "cwd": "./testpm2",
            "script": "npm",
            "args": "start"
        }
    ]
}

const arr = [];
setInterval(() => {
  for (let i = 0; i < 100000; i += 1) {
    arr.push('12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890');
  }
  console.log('running....', arr.length);
  console.log(process.memoryUsage());

}, 100);

index.js

module.exports ={
    "apps": [
        {
            "name": "my-test-app",
            "cwd": "./testpm2",
            "script": "npm",
            "args": "start"
        }
    ]
}

const arr = [];
setInterval(() => {
  for (let i = 0; i < 100000; i += 1) {
    arr.push('12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890');
  }
  console.log('running....', arr.length);
  console.log(process.memoryUsage());

}, 100);

当pm2运行时，pm2监视器显示内存恒定在49MB。显然是泄漏，但pm2未能读取正确的内存值。

我是否错误地配置了生态系统文件？这里发生了什么事