perf: parse, chunk and hash documents in a worker thread and add startup and document-parse benchmarks

src/main/document-parse-errors.ts

@@ -0,0 +1,28 @@
+// Wire format shared by document-parse-client (Main) and document-parse-worker.
+
+export type DocumentParseOperation =
+  | 'parseDocument'
+  | 'extractPdfTextPages'
+  | 'extractPptxPages'
+  | 'chunkDocument'
+  | 'sha256'
+
+export type DocumentParseRequest = {
+  id: number
+  op: DocumentParseOperation
+  args: unknown[]
+}
+
+export type SerializedDocumentParseError = {
+  name: string
+  message: string
+  /** Primitive own properties some error types carry (PDF.js, Node). */
+  extra?: Record<string, unknown>
+  cause?: SerializedDocumentParseError
+}
+
+export type DocumentParseResponse =
+  | { id: number; result: unknown }
+  | { id: number; error: SerializedDocumentParseError }
+
+export const documentParseErrorExtraKeys = ['code', 'status', 'missing', 'details', 'extraDelay'] as const