fix: await the .modules
of nested Elysia instances
#549
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If we don't await the
promisedModules
(previously known aslazyLoadModules
) within theElysia#_use
method, we will erroneously callElysia#compile
before all nested plugins have loaded.This PR also introduces a new internal primitive called
PromiseGroup
. We don't want to keep all the plugin promises in memory forever, so that we can await the plugin promises withinElysia#_use
and call_use
again afterwards without fearing an endless loop. ThePromiseGroup
ensures no endless loop can occur.