Unbundeling a pre-built Javascript file built using browserify - browserify

Question

I have a third party library, non uglified which was bundled using browserify. Unfortunately the original sources are not available.
Is there a way to unbundled it into different files/sources.

Answer 1

You should be able to 'unbundle' the pre-built Browserify bundle using browser-unpack.
It will generate JSON output like this:
[
{
"id": 1,
"source": "\"use strict\";\r\nvar TodoActions = require(\"./todo\"); ... var VisibilityFilterActions = require(\"./visibility-filter\"); ...",
"deps": {
"./todo": 2,
"./visibility-filter": 3
}
},
{
"id": 2,
"source": "\"use strict\";\r\n ...",
"deps": {}
},
{
"id": 3,
"source": "\"use strict\";\r\n ...",
"deps": {}
},
...
]
It should be reasonably straight-forward to transform the JSON output into source files that can be required. Note that the mappings of require literals (like "./todo") are in the deps. That is, the module required as "./todo" corresponds to the source with an id of 2.
There is also a browserify-unpack tool - which writes the contents as files - but I've not used it.