Add `indented-code-wrapping` feature (#1989)19.5.24.1922

Co-authored-by: Federico Brigante <github@bfred.it>

1 files changed, 15 insertions, 0 deletions

diff --git a/source/libs/on-pr-file-load.tsx b/source/libs/on-pr-file-load.tsx
new file mode 100644
index 00000000..ee61c73c
--- /dev/null
+++ b/source/libs/on-pr-file-load.tsx
@@ -0,0 +1,15 @@
+// In PRs' Files tab, some files are loaded progressively later.
+const handlers = new WeakMap<EventListener, EventListener>();
+
+export default function onPrFileLoad(callback: EventListener): void {
+	// When a fragment loads, more fragments might be nested in it. The following code avoids duplicate event handlers.
+	const recursiveCallback = handlers.get(callback) || ((event: Event) => {
+		callback(event);
+		onPrFileLoad(callback);
+	});
+	handlers.set(callback, recursiveCallback);
+
+	for (const fragment of document.querySelectorAll('include-fragment.diff-progressive-loader')) {
+		fragment.addEventListener('load', recursiveCallback);
+	}
+}