add some packages

node_modules/babel-plugin-transform-member-expression-literals/lib/index.js

@@ -0,0 +1,36 @@
+"use strict";
+
+module.exports = function ({
+  types: t
+}) {
+  return {
+    name: "transform-member-expression-literals",
+    visitor: {
+      // foo['bar'] -> foo.bar
+      MemberExpression: {
+        exit({
+          node
+        }) {
+          const prop = node.property;
+
+          if (!node.computed || !t.isStringLiteral(prop)) {
+            return;
+          }
+
+          if (prop.value.match(/^\d+$/)) {
+            const newProp = parseInt(prop.value, 10);
+
+            if (newProp.toString() === prop.value) {
+              node.property = t.numericLiteral(newProp);
+              node.computed = false;
+            }
+          } else if (t.isValidIdentifier(prop.value)) {
+            node.property = t.identifier(prop.value);
+            node.computed = false;
+          }
+        }
+
+      }
+    }
+  };
+};