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mini-vm

v0.0.4

Published

simplify vm

Downloads

9

Readme

mini-vm

node原生的vm模块实现了完全的资源隔离,但是性能不是很理想,而在某些应用场景下,我们需要的是简单的沙盒。

mini-vm是为了满足这类场景而设计的,结合了require和vm模块,实现简化的沙盒模块。

mini-vm模块的api兼容node原生方法,可以无缝的切换到原生vm模块。

demo

调用方式和vm的Script模块类似,仅实现了runInNewContext功能

var vm    = require('mini-vm');

var code = 'console.log("hello word")';

var script = vm.createScript(code, 'hello.vm');

var sandbox = {
  console : {
    log: function(str){
      console.log('....' + str);
    }
  }
};
script.runInNewContext(sandbox);

api

vm.createScript(code, options)

options:

  • filename: allows you to control the filename that shows up in any stack traces produced from this script.

new vm.Script(code, options)

script.runInNewContext(sandbox)

功能

由于实现方式和require类似,因此vm代码还是能够访问原生属性和方法,如果需要禁用或者mock原生功能,可以在sandbox中传入

性能

node benchmark/index.js
  • vm: 7823ms
  • mini-vm: 53ms
  • require: 44ms