Global Replacer

A script that replaces specified global variables and their properties in a javascript code string.

Features

• Can replace global variables, i.e. variables that haven't occurred in any local scopes
• Can replace global variables' properties
• Can replace both in one e.g. window.location -> _window._l_ocation
• Can't currently specify a global change and a corresponding global property change in separate replacement options e.g.

{
  'window': '_window',
  'window.location': 'window._l_ocation'
}

• The number of object parts must be equal to the replaced version
  i.e. ['window', 'location'] and ['window', '__location'] both have two parts

Examples

Replacing globals

var replacer = require('global-replacer');
var replacedString = replacer('var loc = window.location.href.toString();', {
  replacements: {
    'window': '_window'
  }
});
console.log(replacedString); // var loc = _window.location.href.toString();

Replacing global properties

var replacer = require('global-replacer');
var replacedString = replacer('var loc = window.location.href.toString();', {
  replacements: {
    'window.location': 'window._l_o_c_ation'
  }
});
console.log(replacedString); // var loc = window._l_o_c_ation.href.toString();

The replacements will also work when globals are passed into functions.
For example, with the above options:

(function (w) {
  w.location.href = 'http://google.com';
})(window);

will become

(function (w) {
  w._l_o_c_ation.href = 'http://google.com';
})(window);