add node_modules

node_modules/to-buffer/index.js

@@ -0,0 +1,14 @@
+module.exports = toBuffer
+
+var makeBuffer = Buffer.from && Buffer.from !== Uint8Array.from ? Buffer.from : bufferFrom
+
+function bufferFrom (buf, enc) {
+  return new Buffer(buf, enc)
+}
+
+function toBuffer (buf, enc) {
+  if (Buffer.isBuffer(buf)) return buf
+  if (typeof buf === 'string') return makeBuffer(buf, enc)
+  if (Array.isArray(buf)) return makeBuffer(buf)
+  throw new Error('Input should be a buffer or a string')
+}