删除多余的行返回

with open("input.txt", "r") as file:
    lines = file.readlines()

with open("output.txt", "w") as file:
    for line in lines:
        if line.strip():
            file.write(line)

const fs = require("fs");

const input = fs.readFileSync("input.txt", "utf8").split("\n");
const output = [];

input.forEach((line) => {
    if (line.trim()) {
        output.push(line);
    }
});

fs.writeFileSync("output.txt", output.join("\n"));