node编译字符串为模块

将字符串以模块的形式导出

function requireFromString(src, filename) {
  var Module = module.constructor;
  var m = new Module();
  m._compile(src, filename);
  return m.exports;
}

console.log(requireFromString('module.exports = { test: 1}'));

function requireFromString(string, filename) {
const NativeModule = require('module')
var modules = { exports: {}}
const wrapper = NativeModule.wrap(string)
let strings = wrapper.substring(0,400)
console.log(strings, strings.length)
const script = new vm.Script(wrapper, {
filename: filename,
displayErrors: true
})
const result = script.runInThisContext()
result(modules.exports, require, modules, __filename, __dirname)
return module.exports
}
// 仿照nodejs源码方式利用vm编译字符串js