strictModuleExceptionHandling missing in documentation of webpack 2

[aight8]

Source in master:
https://github.com/webpack/webpack/blob/master/lib/MainTemplate.js#L69

Release info:
https://github.com/webpack/webpack/releases/tag/v2.1.0-beta.28

[TheLarkInn]

Great low hanging fruit for anyone interested!

[TheLarkInn]

Thanks for reporting!

[skipjack]

Didn't even know about this feature, that's awesome! Found a stackoverflow post that has a good explanation, maybe it could be a start for whoever wants to pick this up?

[sokra]

Note that the stackoverflow answer is wrong. strictModuleExceptionHandling is about how exceptions are handled in modules. If true module is removed form cache when exception occurs while module loading. see the PR introducing it.

[skipjack]

@sokra ah good to know. Then I guess they can reference your PR and the issue discussing it.

[aight8]

Note that the stackoverflow answer is wrong. strictModuleExceptionHandling is about how exceptions are handled in modules. If true module is removed form cache when exception occurs while module loading. see the PR introducing it.

This is confusing. From which cache? An example / why someone should enable or disable this - would make more sense.

[sokra]

from require.cache (the module instance cache at runtime)

// module.js
throw new Error("error");

// with strictModuleExceptionHandling = false
require("module") // <- throws
require("module") // <- doesn't throw

// with strictModuleExceptionHandling = true
require("module") // <- throws
require("module") // <- also throw

strictModuleExceptionHandling = true uses try finally in the runtime which makes it slow. The default behavior is the more performant one, assuming require is not used for exception twice.