fix: defer pdf deps and profile flag detection

src/types/napi-rs-canvas.d.ts

@@ -0,0 +1,7 @@
+declare module "@napi-rs/canvas" {
+  export type Canvas = {
+    toBuffer(type?: string): Buffer;
+  };
+
+  export function createCanvas(width: number, height: number): Canvas;
+}

src/types/pdfjs-dist-legacy.d.ts

@@ -0,0 +1,34 @@
+declare module "pdfjs-dist/legacy/build/pdf.mjs" {
+  export type TextItem = {
+    str: string;
+  };
+
+  export type TextMarkedContent = {
+    type?: string;
+  };
+
+  export type TextContent = {
+    items: Array<TextItem | TextMarkedContent>;
+  };
+
+  export type Viewport = {
+    width: number;
+    height: number;
+  };
+
+  export type PDFPageProxy = {
+    getTextContent(): Promise<TextContent>;
+    getViewport(params: { scale: number }): Viewport;
+    render(params: { canvas: unknown; viewport: Viewport }): { promise: Promise<void> };
+  };
+
+  export type PDFDocumentProxy = {
+    numPages: number;
+    getPage(pageNumber: number): Promise<PDFPageProxy>;
+  };
+
+  export function getDocument(params: {
+    data: Uint8Array;
+    disableWorker?: boolean;
+  }): { promise: Promise<PDFDocumentProxy> };
+}