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-rw-r--r--toolkit/components/aboutperformance/tests/browser/workers_script.js10
1 files changed, 10 insertions, 0 deletions
diff --git a/toolkit/components/aboutperformance/tests/browser/workers_script.js b/toolkit/components/aboutperformance/tests/browser/workers_script.js
new file mode 100644
index 0000000000..fae87fa53f
--- /dev/null
+++ b/toolkit/components/aboutperformance/tests/browser/workers_script.js
@@ -0,0 +1,10 @@
+function fib(n) {
+ if (n < 2) {
+ return 1;
+ }
+ return fib(n - 1) + fib(n - 2);
+}
+
+onmessage = function (e) {
+ self.postMessage(fib(Number(e.data)));
+};