追加内容到文件

import { appendFile } from "node:fs/promises";

await appendFile("message.txt", "data to append");

import { appendFile } from "node:fs";

appendFile("message.txt", "data to append", err => {
  if (err) throw err;
  console.log('已将 "data to append" 追加到文件！');
});

import { appendFile } from "node:fs";

appendFile("message.txt", "data to append", "utf8", callback);

import { appendFileSync } from "node:fs";

appendFileSync("message.txt", "data to append", "utf8");