Opening exported graph index.html locally works? how?

[Asa-Losurdo]

I'm trying to wrap my head around how logseq is able to load scripts from the local file system with out running in CORS issues.
I'm trying to replicate this in one of my own projects.
https://stackoverflow.com/questions/61052684/how-to-load-a-wasm-module-locally
https://stackoverflow.com/questions/43493323/cross-origin-request-for-local-file