Throw exception when encode is not passed a Buffer

cryptocoinjs · Oct 4, 2018 · 6cbf08a · 6cbf08a
1 parent 346f0d5
commit 6cbf08a
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diff --git a/index.js b/index.js
@@ -22,6 +22,8 @@ module.exports = function base (ALPHABET) {
  }
 
  function encode (source) {
+ if (!Buffer.isBuffer(source)) throw new TypeError('Expected Buffer')
+
  if (source.length === 0) return ''
 
  var digits = [0]

diff --git a/test/index.js b/test/index.js
@@ -47,3 +47,12 @@ tape.test('decode should return Buffer', function (t) {
 
  t.end()
 })
+
+tape.test('encode throws on string', function (t) {
+ var base = bases.base58
+
+ t.throws(function () {
+ base.encode('a')
+ }, new RegExp('^TypeError: Expected Buffer$'))
+ t.end()
+})