It is a common pattern in Node to support optional dependencies via requires in try..catch blocks. Browserify doesn't support this by default and throws a compile time error when it cannot find a module. You can solve the problem by using browserify's exclude option, but this works globally instead of at a per-module level. This transform fixes the problem by moving the compile time error to a runtime error for requires of missing modules inside try..catch blocks.
The transform would transform the following code such that requiring
missing-module would throw
a runtime error instead of a compile time error, making the code work as expected.
tryvar x = ;catch evar x = ;
To set it up in browserify, add this to your package.json: