add node modules to repo

node_modules/base64-js/test/big-data.js

@@ -0,0 +1,24 @@
+var test = require('tape')
+var b64 = require('../')
+
+test('convert big data to base64', function (t) {
+  var b64str, arr, i, length
+  var big = new Uint8Array(64 * 1024 * 1024)
+  for (i = 0, length = big.length; i < length; ++i) {
+    big[i] = i % 256
+  }
+  b64str = b64.fromByteArray(big)
+  arr = b64.toByteArray(b64str)
+  t.ok(equal(arr, big))
+  t.end()
+})
+
+function equal (a, b) {
+  var i
+  var length = a.length
+  if (length !== b.length) return false
+  for (i = 0; i < length; ++i) {
+    if (a[i] !== b[i]) return false
+  }
+  return true
+}