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vm-browserify

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vm-browserify

vm module for the browser

    1.1.2latest
    GitHub
    npm

Version published
Maintainers
40
Weekly downloads
8,374,806
increased by3.24%

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Package description

What is vm-browserify?

The vm-browserify npm package is a browser shim for Node.js's vm module. It allows you to run scripts in a sandboxed environment within the browser, similar to how you would in Node.js. This can be useful for executing code in a controlled and isolated context.

What are vm-browserify's main functionalities?

Running code in a sandbox

This feature allows you to execute a string of code in a new, isolated context. The sandbox object can be used to pass in and out values from the sandboxed environment.

var vm = require('vm-browserify');
var sandbox = { animal: 'cat' };
vm.runInNewContext('console.log(animal)', sandbox);

Other packages similar to vm-browserify

Changelog

Source

1.1.2 - 2019-11-04

  • Update another jQuery reference in the readme. (https://github.com/browserify/vm-browserify/pull/27)
  • Get rid of jQuery references altogether from samples and readme. (https://github.com/browserify/vm-browserify/commit/d509e8e5afb7b1ead191cbbd49c37a3fb934b2dc)

Readme

Source

vm-browserify

emulate node's vm module for the browser

Build Status

example

Just write some client-side javascript:

var vm = require('vm');

window.addEventListener('load', function () {
    var res = vm.runInNewContext('a + 5', { a : 100 });
    document.querySelector('#res').textContent = res;
});

compile it with browserify:

browserify entry.js -o bundle.js

then whip up some html:

<html>
  <head>
    <script src="/bundle.js"></script>
  </head>
  <body>
    result = <span id="res"></span>
  </body>
</html>

and when you load the page you should see:

result = 105

methods

vm.runInNewContext(code, context={})

Evaluate some code in a new iframe with a context.

Contexts are like wrapping your code in a with() except slightly less terrible because the code is sandboxed into a new iframe.

install

This module is depended upon by browserify, so you should just be able to require('vm') and it will just work. However if you want to use this module directly you can install it with npm:

npm install vm-browserify

license

MIT

Keywords

FAQs

Last updated on 04 Nov 2019

Did you know?

Socket installs a GitHub app to automatically flag issues on every pull request and report the health of your dependencies. Find out what is inside your node modules and prevent malicious activity before you update the dependencies.

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