import { OcctKernel } from "https://YOUR-INSTANCE.example.com/api/notes/__OCCT_JS_ID__/download"; let kernel = null; let initP = null; self.onmessage = async function (e) { var d = e.data; if (d.type !== "parse") return; try { if (!initP) initP = OcctKernel.init({ wasm: d.wasm }); kernel = await initP; var shape = kernel.importStep(d.data); var mesh = kernel.tessellate(shape, d.params); kernel.release(shape); self.postMessage({ type: "done", positions: mesh.positions, normals: mesh.normals, indices: mesh.indices }, [mesh.positions.buffer, mesh.normals.buffer, mesh.indices.buffer]); } catch (err) { self.postMessage({ type: "error", message: "parse: " + (err && err.message || err) }); } };