Libraries: Move to Userland/Libraries/

Userland/Libraries/LibJS/Tests/to-number-exception.js

@@ -0,0 +1,25 @@
+const message = "oops, Value::to_number() failed";
+
+const o = {
+    toString() {
+        throw new Error(message);
+    },
+};
+
+test("basic functionality", () => {
+    expect(() => {
+        +o;
+    }).toThrowWithMessage(Error, message);
+
+    expect(() => {
+        o - 1;
+    }).toThrowWithMessage(Error, message);
+
+    expect(() => {
+        "foo".charAt(o);
+    }).toThrowWithMessage(Error, message);
+
+    expect(() => {
+        "bar".repeat(o);
+    }).toThrowWithMessage(Error, message);
+});