Initial commit

src/alert.mjs

@@ -0,0 +1,52 @@
+/* Copyright (C) 2023-2025 anonymous
+
+This file is part of PSFree.
+
+PSFree is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
+
+PSFree is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+// We can't just open a console on the ps4 browser, make sure the errors thrown
+// by our program are alerted.
+
+// We don't use a custom logging function to avoid a dependency on a logging
+// module since we want this file to stand alone. We don't want to copy the
+// log function here either for the sake avoiding dependencies since using
+// alert() is good enough.
+
+// We log the line and column numbers as well since some exceptions (like
+// SyntaxError) do not show it in the stack trace.
+
+addEventListener('unhandledrejection', event => {
+    const reason = event.reason;
+    alert(
+        'Unhandled rejection\n'
+        + `${reason}\n`
+        + `${reason.sourceURL}:${reason.line}:${reason.column}\n`
+        + `${reason.stack}`
+    );
+});
+
+addEventListener('error', event => {
+    const reason = event.error;
+    alert(
+        'Unhandled error\n'
+        + `${reason}\n`
+        + `${reason.sourceURL}:${reason.line}:${reason.column}\n`
+        + `${reason.stack}`
+    );
+    return true;
+});
+
+// we have to dynamically import the program if we want to catch its syntax
+// errors
+import('./psfree.mjs');