feat: isPeerId

libp2p · Mar 27, 2017 · 0acc572 · 0acc572
1 parent 8c49610
commit 0acc572
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Showing 2 changed files with 16 additions and 0 deletions.
diff --git a/src/index.js b/src/index.js
@@ -219,6 +219,12 @@ exports.createFromJSON = function (obj, callback) {
   }
 }
 
+exports.isPeerId = function (peerId) {
+  if (peerId.constructor && peerId.constructor.name) {
+    return peerId.constructor.name === 'PeerId'
+  }
+}
+
 function toB64Opt (val) {
   if (val) {
     return val.toString('base64')

diff --git a/test/index.spec.js b/test/index.spec.js
@@ -32,6 +32,16 @@ describe('PeerId', () => {
     })
   })
 
+  it('isPeerId', (done) => {
+    PeerId.create((err, id) => {
+      expect(err).to.not.exist()
+      expect(PeerId.isPeerId(id)).to.equal(true)
+      expect(PeerId.isPeerId('aaa')).to.equal(false)
+      expect(PeerId.isPeerId(new Buffer('batatas'))).to.equal(false)
+      done()
+    })
+  })
+
   it('throws on changing the id', (done) => {
     PeerId.create((err, id) => {
       expect(err).to.not.exist()