Use Map.prototype.getOrInsert() in the getNewAnnotationsMap helper

Snuffleupagus · Snuffleupagus · commit 76a5aed05f1e · 2026-02-21T11:03:00.000+01:00
diff --git a/src/core/core_utils.js b/src/core/core_utils.js
@@ -669,12 +669,7 @@ function getNewAnnotationsMap(annotationStorage) {
     if (!key.startsWith(AnnotationEditorPrefix)) {
       continue;
     }
-    let annotations = newAnnotationsByPage.get(value.pageIndex);
-    if (!annotations) {
-      annotations = [];
-      newAnnotationsByPage.set(value.pageIndex, annotations);
-    }
-    annotations.push(value);
+    newAnnotationsByPage.getOrInsert(value.pageIndex, []).push(value);
   }
   return newAnnotationsByPage.size > 0 ? newAnnotationsByPage : null;
 }

Original file line number	Diff line number	Diff line change
`@@ -669,12 +669,7 @@ function getNewAnnotationsMap(annotationStorage) {`
`669`	`669`	`if (!key.startsWith(AnnotationEditorPrefix)) {`
`670`	`670`	`continue;`
`671`	`671`	`}`
`672`		`- let annotations = newAnnotationsByPage.get(value.pageIndex);`
`673`		`- if (!annotations) {`
`674`		`- annotations = [];`
`675`		`- newAnnotationsByPage.set(value.pageIndex, annotations);`
`676`		`- }`
`677`		`- annotations.push(value);`
	`672`	`+ newAnnotationsByPage.getOrInsert(value.pageIndex, []).push(value);`
`678`	`673`	`}`
`679`	`674`	`return newAnnotationsByPage.size > 0 ? newAnnotationsByPage : null;`
`680`	`675`	`}`