How does deno handles the modules (resolved by import and require keywords) ?

[linrongbin16]

hi, this question can be related to this project, or not. But I still want to ask here:

I'm always wondering how does the V8 engine or deno_core handle the js modules.

At first, I'm thinking that V8 engine probably requires the runtime (i.e. deno, deno_core) to implement the import and require keywords. So when V8 is executing the js code, it can invoke these registered methods to resolve the modules.

But after I read the Internals of Deno book, especially these two chapters:

• 5.12 Module graphs
• 5.15 Register / compile module

In my understanding, it seems that in 5.12, deno simply handles all the dependencies specified in the deno.json or package.json, download them and generated local cache (that can be directly executed by V8 engine). Then in the 5.15, deno finally loads all the cache and compile these js codes into V8 engine, and run them.

I'm not sure if my understanding is correct?

[linrongbin16]

Oh, after done read chapter 5.15, it seems my understanding's direction is correct. Maybe the description and details need to be fixed though.

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