Loads the Rapier 2D wasm module once and returns the initialized namespace.
Idempotent: concurrent and later callers receive the same promise, so the base64 image is decoded exactly once per process no matter how many adapters or worlds are created.
Loads the Rapier 2D wasm module once and returns the initialized namespace.
Idempotent: concurrent and later callers receive the same promise, so the base64 image is decoded exactly once per process no matter how many adapters or worlds are created.