planning

node_modules/apollo-utilities/lib/util/cloneDeep.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+var toString = Object.prototype.toString;
+function cloneDeep(value) {
+    return cloneDeepHelper(value, new Map());
+}
+exports.cloneDeep = cloneDeep;
+function cloneDeepHelper(val, seen) {
+    switch (toString.call(val)) {
+        case "[object Array]": {
+            if (seen.has(val))
+                return seen.get(val);
+            var copy_1 = val.slice(0);
+            seen.set(val, copy_1);
+            copy_1.forEach(function (child, i) {
+                copy_1[i] = cloneDeepHelper(child, seen);
+            });
+            return copy_1;
+        }
+        case "[object Object]": {
+            if (seen.has(val))
+                return seen.get(val);
+            var copy_2 = Object.create(Object.getPrototypeOf(val));
+            seen.set(val, copy_2);
+            Object.keys(val).forEach(function (key) {
+                copy_2[key] = cloneDeepHelper(val[key], seen);
+            });
+            return copy_2;
+        }
+        default:
+            return val;
+    }
+}
+//# sourceMappingURL=cloneDeep.js.map