add some packages

node_modules/babel-plugin-transform-property-literals/lib/escape-string-literal.js

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+"use strict";
+/**
+ * Original Source:
+ * https://github.com/shapesecurity/shift-codegen-js/blob/0d09bd8a/src/coderep.js#L122
+ *
+ * The following function is an exact copy of the original implementation
+ *
+ * LICENSE
+
+Copyright 2014 Shape Security, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+ */
+
+module.exports = function escapeStringLiteral(stringValue) {
+  let result = "";
+  let nSingle = 0,
+      nDouble = 0;
+
+  for (let i = 0, l = stringValue.length; i < l; ++i) {
+    let ch = stringValue[i];
+
+    if (ch === '"') {
+      ++nDouble;
+    } else if (ch === "'") {
+      ++nSingle;
+    }
+  }
+
+  let delim = nDouble > nSingle ? "'" : '"';
+  result += delim;
+
+  for (let i = 0; i < stringValue.length; i++) {
+    let ch = stringValue.charAt(i);
+
+    switch (ch) {
+      case delim:
+        result += "\\" + delim;
+        break;
+
+      case "\n":
+        result += "\\n";
+        break;
+
+      case "\r":
+        result += "\\r";
+        break;
+
+      case "\\":
+        result += "\\\\";
+        break;
+
+      case "\u2028":
+        result += "\\u2028";
+        break;
+
+      case "\u2029":
+        result += "\\u2029";
+        break;
+
+      default:
+        result += ch;
+        break;
+    }
+  }
+
+  result += delim;
+  return result;
+};