initial commit

node_modules/when-exit/dist/browser/interceptor.js

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+/* IMPORT */
+/* MAIN */
+class Interceptor {
+    /* CONSTRUCTOR */
+    constructor() {
+        /* VARIABLES */
+        this.callbacks = new Set();
+        /* API */
+        this.exit = () => {
+            for (const callback of this.callbacks) {
+                callback();
+            }
+        };
+        this.hook = () => {
+            window.addEventListener('beforeunload', this.exit);
+        };
+        this.register = (callback) => {
+            this.callbacks.add(callback);
+            return () => {
+                this.callbacks.delete(callback);
+            };
+        };
+        this.hook();
+    }
+}
+/* EXPORT */
+export default new Interceptor();