文件夹整理

doc/test-data/purchase_transaction/node_modules/buffer-indexof-polyfill/init-buffer.js

@@ -0,0 +1,8 @@
+module.exports = function initBuffer(val) {
+  // assume old version
+    var nodeVersion = process && process.version ? process.version : "v5.0.0";
+    var major = nodeVersion.split(".")[0].replace("v", "");
+    return major < 6
+      ? new Buffer(val)
+      : Buffer.from(val);
+};