Convert src/runtime/internal/spread.ts to JavaScript

src/runtime/internal/spread.ts

@@ -1,41 +1,42 @@
+/** @returns {{}} */
 export function get_spread_update(levels, updates) {
-	const update = {};
+    const update = {};
-
+    const to_null_out = {};
-	const to_null_out = {};
+    const accounted_for = { $$scope: 1 };
-	const accounted_for = { $$scope: 1 };
+    let i = levels.length;
-
+    while (i--) {
-	let i = levels.length;
+        const o = levels[i];
-	while (i--) {
+        const n = updates[i];
-		const o = levels[i];
+        if (n) {
-		const n = updates[i];
+            for (const key in o) {
-
+                if (!(key in n))
-		if (n) {
+                    to_null_out[key] = 1;
-			for (const key in o) {
+            }
-				if (!(key in n)) to_null_out[key] = 1;
+            for (const key in n) {
-			}
+                if (!accounted_for[key]) {
-
+                    update[key] = n[key];
-			for (const key in n) {
+                    accounted_for[key] = 1;
-				if (!accounted_for[key]) {
+                }
-					update[key] = n[key];
+            }
-					accounted_for[key] = 1;
+            levels[i] = n;
-				}
+        }
-			}
+        else {
+            for (const key in o) {
+                accounted_for[key] = 1;
+            }
+        }
+    }
+    for (const key in to_null_out) {
+        if (!(key in update))
+            update[key] = undefined;
+    }
+    return update;
+}
+/** @returns {any} */
+export function get_spread_object(spread_props) {
+    return typeof spread_props === 'object' && spread_props !== null ? spread_props : {};
+}
 
-			levels[i] = n;
-		} else {
-			for (const key in o) {
-				accounted_for[key] = 1;
-			}
-		}
-	}
 
-	for (const key in to_null_out) {
-		if (!(key in update)) update[key] = undefined;
-	}
 
-	return update;
-}
 
-export function get_spread_object(spread_props) {
-	return typeof spread_props === 'object' && spread_props !== null ? spread_props : {};
-}