Made sort and extract pages functions conform to the new design pattern. Standardised naming of a few variables

shared-operations/src/functions/removeBlankPages.ts

@@ -0,0 +1,18 @@
+
+import { PdfFile } from '../wrappers/PdfFile.js';
+import { detectEmptyPages } from './common/detectEmptyPages.js';
+import { getPages } from './common/getPagesByIndex.js';
+
+export type RemoveBlankPagesParamsType = {
+    file: PdfFile;
+    whiteThreashold: number;
+}
+export async function removeBlankPages(params: RemoveBlankPagesParamsType) {
+    const { file, whiteThreashold } = params;
+    const pageCount = await file.pdfLibDocument;
+
+    const emptyPages = await detectEmptyPages(file, whiteThreashold);
+    console.debug("Empty Pages: ", emptyPages);
+    const pagesToKeep = invertSelection(emptyPages, pageCount.getPageCount())
+    return getPages(file, pagesToKeep);
+}