Ask about the grammar of RowDataPacket

[RowDataPacket {name: "zhang3", password:" undefined", random: null},
RowDataPacket {name: "zhang3", password:" undefined", random: null},
RowDataPacket {name: "zhang3", password:" undefined", random: null},
RowDataPacket {name: "zhang3", password:" undefined", random: null},
RowDataPacket {name: "zhang3", password:" undefined", random: null},
RowDataPacket {name: "zhang3", password: undefined" Random: null},
RowDataPacket {name: "zhang3", password:" undefined", random: null},
RowDataPacket {name: "zhang3", password:" undefined", random: null},
RowDataPacket {name: "zhang3", password:" undefined", random: null}]

nodejs+mysql query to get the structural data as above. I found some ways to convert to json or objec, but what I want to ask here is, purely from the syntax of JavaScript, is this a legal array? That is, is
RowDataPacket {name: "zhang3", password:" undefined", random: null}
a legal object?

Thank you for your advice.

Mysql node.js javascript
Jun.27,2022

RowDataPacket is a class. 

class RowDataPacket {
  constructor(x, y) {
    this.x = x;
    this.y = y;
  }
}

console.log(new RowDataPacket(1, 2));  // RowDataPacket { x: 1, y: 2 }

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Message : Disk full (/tmp/#sql-temptable-64f5-1e46084-43af9.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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