1 files changed, 61 insertions, 0 deletions
diff --git a/node_modules/@babel/plugin-transform-duplicate-keys/lib/index.js b/node_modules/@babel/plugin-transform-duplicate-keys/lib/index.js
new file mode 100644
index 00000000..5a9b47d2
--- /dev/null
+++ b/node_modules/@babel/plugin-transform-duplicate-keys/lib/index.js
@@ -0,0 +1,61 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+var _helperPluginUtils = require("@babel/helper-plugin-utils");
+var _core = require("@babel/core");
+function getName(key) {
+  if (_core.types.isIdentifier(key)) {
+    return key.name;
+  }
+  return key.value.toString();
+}
+var _default = (0, _helperPluginUtils.declare)(api => {
+  api.assertVersion(7);
+  return {
+    name: "transform-duplicate-keys",
+    visitor: {
+      ObjectExpression(path) {
+        const {
+          node
+        } = path;
+        const plainProps = node.properties.filter(prop => !_core.types.isSpreadElement(prop) && !prop.computed);
+        const alreadySeenData = Object.create(null);
+        const alreadySeenGetters = Object.create(null);
+        const alreadySeenSetters = Object.create(null);
+        for (const prop of plainProps) {
+          const name = getName(prop.key);
+          let isDuplicate = false;
+          switch (prop.kind) {
+            case "get":
+              if (alreadySeenData[name] || alreadySeenGetters[name]) {
+                isDuplicate = true;
+              }
+              alreadySeenGetters[name] = true;
+              break;
+            case "set":
+              if (alreadySeenData[name] || alreadySeenSetters[name]) {
+                isDuplicate = true;
+              }
+              alreadySeenSetters[name] = true;
+              break;
+            default:
+              if (alreadySeenData[name] || alreadySeenGetters[name] || alreadySeenSetters[name]) {
+                isDuplicate = true;
+              }
+              alreadySeenData[name] = true;
+          }
+          if (isDuplicate) {
+            prop.computed = true;
+            prop.key = _core.types.stringLiteral(name);
+          }
+        }
+      }
+    }
+  };
+});
+exports.default = _default;
+
+//# sourceMappingURL=index.js.map