第一个参数必须是字符串类型或缓冲区或 uint8array 的实例。 收到未定义

Question

I made this code and after everything I try it keeps giving me this error.

First argument must be of type string or an instance of buffer or uint8array. Received undefined

Excuse me for being new at Node.js, but I really don't know where I went wrong. I thank you for your help.

function createServer(obj){
  var i;
  obj.port = (obj.port || 8080);
  obj.path = (obj.path || "/");

  http.createServer((req, res) => {
    res.writeHead(200, {'Content-Type': 'text/html'});
    for(i in obj.path){
      fs.readFile(i, "utf-8", (err, data) => {
        if(err){
          console.log(err);
        }
        res.write(data);
        res.end();
      })
    }
    
  }).listen(obj.port);

  return obj;
}

Answer 1

Your index.js file [https://github.com/notJudahRR/Firwe/blob/main/index.js] set path as an object:

const firwe = require("./src/index.js");

let server = firwe({
  port: 8080,
  path: {
    "/": "index.html"
  },
});
server.initServer();

Then, in server.js [https://github.com/notJudahRR/Firwe/blob/main/src/server.js] you must handle appropriately:

const http = require("http");
const fs = require("fs");
const type = require("./type.js");

function createServer(obj) {
  var i;
  obj.port = obj.port || 8080;
  obj.path = obj.path || {
    "/": "index.html",
  };

  http
    .createServer((req, res) => {
      res.writeHead(200, { "Content-Type": "text/html" });
      Object.values(obj.path).forEach((v) => {
        fs.readFile(v, "utf-8", (err, data) => {
          if (err) {
            console.log(err);
          }
          res.write(data);
          res.end();
        });
      });
    })
    .listen(obj.port);

  return obj;
}

module.exports = createServer;

Object.values loop in each object property value and then you get the index.html to get the file to render.