Out of the box Angular provides two strategies already implemented for us, pretty explanatory from the name:

  • NoPreloading — no modules are preloaded, this is the default behaviour
  • PreloadAllModules — all modules are preloaded as fast as possible

While this will work in some scenarios, we might want to create something a bit more complex here. 

David Dal Busco and Aaron Sterling developed a custom preloading strategy that can be triggered only on demand.

Read David’s article:

Preloading modules in Ionic v4

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