Option for stable module Ids?

[lelandrichardson]

Do you want to request a feature or report a bug?
Feature

i’m working on OTA updates for RN at airbnb, and one of the things that i’m looking to do is to ensure that we can push just the code that’s changed and not the whole bundle to the clients. since the RN packager uses unstable module ids after bundling code (ie, require(123) might need to turn into require(124) after a relatively trivial change in module loading order).

I was thinking about submitting a PR to metro-bundler that would add in an option to use "stable ids" for the require algorithm. This would probably end up using the localPath of the module, as opposed to the auto-incrementing module id.

I'm still considering strategies, but I'm thinking that in the situation where the user is using unbundle, a map of localPath => moduleId could be added to a global variable or something, which the require.js polyfill could utilize.

If I made such a PR, would FB be willing to accept it? It would be done in such a way that it would be completely opt-in.

cc @jeanlauliac @cpojer

[mc-zone]

Also need this feature. There is also an issue #6 I opened earlier to discuss about it.

[rafeca]

Hey @lelandrichardson! this was added in f347e4f and is available on 0.24.1

[lelandrichardson]

@rafeca awesome, thanks!