From c972fe6cec8f643fbafd0fe33b461798faedaf80 Mon Sep 17 00:00:00 2001
From: Andreu Botella <abb@randomunok.com>
Date: Wed, 7 Jul 2021 19:56:47 +0200
Subject: tests: escape lone surrogates in wptreport (#11310)

---
 tools/wpt/utils.ts | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'tools/wpt')

diff --git a/tools/wpt/utils.ts b/tools/wpt/utils.ts
index 13c68ec90..1f76ff128 100644
--- a/tools/wpt/utils.ts
+++ b/tools/wpt/utils.ts
@@ -154,6 +154,16 @@ export async function cargoBuild() {
   assert(status.success, "cargo build failed");
 }
 
+export function escapeLoneSurrogates(input: string): string;
+export function escapeLoneSurrogates(input: string | null): string | null;
+export function escapeLoneSurrogates(input: string | null): string | null {
+  if (input === null) return null;
+  return input.replace(
+    /[\uD800-\uDFFF]/gu,
+    (match) => `U+${match.charCodeAt(0).toString(16)}`,
+  );
+}
+
 /// WPTREPORT
 
 export async function generateRunInfo(): Promise<unknown> {
-- 
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