Install (or, with undefined, remove) the callback invoked at most once a
second while geometry work is in progress inside a WASM call. It runs
synchronously inside that call, so it must only do something cheap such as
postMessage, and must not call back into this module.
Install (or, with
undefined, remove) the callback invoked at most once a second while geometry work is in progress inside a WASM call. It runs synchronously inside that call, so it must only do something cheap such aspostMessage, and must not call back into this module.