相关疑难解决方法(0)

是否可以从node.js中的stdin同步读取？因为我正在用JavaScript编写一个关于JavaScript编译器的脑筋(只是为了好玩).Brainfuck支持需要同步实现的读取操作.

我试过这个:

const fs = require('fs');
var c = fs.readSync(0,1,null,'utf-8');
console.log('character: '+c+' ('+c.charCodeAt(0)+')');

但这只产生这个输出:

fs:189
  var r = binding.read(fd, buffer, offset, length, position);
              ^
Error: EAGAIN, Resource temporarily unavailable
    at Object.readSync (fs:189:19)
    at Object.<anonymous> (/home/.../stdin.js:3:12)
    at Module._compile (module:426:23)
    at Module._loadScriptSync (module:436:8)
    at Module.loadSync (module:306:10)
    at Object.runMain (module:490:22)
    at node.js:254:10