bubble-boy

Modifies JavaScript code to sandbox all global variable declarations and references.

npm install bubble-boy
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bubble-boy

Modifies JavaScript code to sandbox all global variable declarations and references to avoid scope leaking. Resulting function should be executed in the sandboxing scope (function() { ... })() kind of function.

Dependency status devDependency Status Build Status

NPM

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Installation

npm install bubble-boy

Testing

npm test

Using

var bubbleBoy = require('bubble-boy');

bubbleBoy("i = 1")
// sandbox.i = 1

Implementation Details

log("hello")
// sandbox.log("hello")

console.log("hello")
// sandbox.console.log("hello")

i = 10
// sandbox.i = 10

i++
// sandbox.i++

first.second.third = 10
// sandbox.first.second.third = 10

function f(foo) { foo = 10; }
// foo = 20;

function f(foo) { foo = 10; }
// sandbox.foo = 20;

f = function() {};
f("test");
// sandbox.f = function() {};
// sandbox.f("test");

function f(foo) { foo = 10; }
// function f(foo) { foo = 10; }

function f(foo) {
  function b() {
    foo = 10;
  }
}
// function f(foo) {
//   function b() {
//     foo = 10;
//   }
// }

function b() {
  f = function() {};
  f("test");
}
// function b() {
//   sandbox.f = function() {};
//   sandbox.f("test");
// }

function f(bar) {
  function localFunc() {}
  localFunc(bar);
}
// function f(bar) {
//   function localFunc() {}
//   localFunc(bar);
// }

function f(bar) { globalFunc(bar); }
// function f(bar) { sandbox.globalFunc(bar); }

var f = function() {};
f("test");
// sandbox.f = function() {};
// sandbox.f("test");

Other modules

License

The MIT License (MIT)

Copyright (c) 2013 Alex Gorbatchev

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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