From d2fe2d1b3609b1a1751ea432c7aebb1e3dd044a5 Mon Sep 17 00:00:00 2001
From: Jacob Heun <jacobheun@gmail.com>
Date: Tue, 29 Oct 2019 12:12:09 +0100
Subject: [PATCH] feat: crypto errors (#4)

* chore: ignore docs folder

* feat: add invalid crypto exchange error
---
 .gitignore           |  1 +
 src/crypto/README.md |  4 +++-
 src/crypto/errors.js | 16 ++++++++++++++--
 3 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/.gitignore b/.gitignore
index fad1fce..2bf84b1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,7 @@
 
 build
 dist
+docs
 
 # Dependency directory
 # https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git
diff --git a/src/crypto/README.md b/src/crypto/README.md
index 7d15a5e..ac00951 100644
--- a/src/crypto/README.md
+++ b/src/crypto/README.md
@@ -84,6 +84,7 @@ Common crypto errors come with the interface, and can be imported directly. All
 
 ```js
 const {
+  InvalidCryptoExchangeError,
   UnexpectedPeerError
 } = require('libp2p-interfaces/src/crypto/errors')
 
@@ -93,4 +94,5 @@ console.log(error.code === UnexpectedPeerError.code) // true
 
 ### Error Types
 
-- `UnexpectedPeerError` - Should be thrown when the expected peer id does not match the peer id determined via the crypto exchange
+- `InvalidCryptoExchangeError` - Should be thrown when a peer provides data that is insufficient to finish the crypto exchange.
+- `UnexpectedPeerError` - Should be thrown when the expected peer id does not match the peer id determined via the crypto exchange.
diff --git a/src/crypto/errors.js b/src/crypto/errors.js
index 3784482..dc6af46 100644
--- a/src/crypto/errors.js
+++ b/src/crypto/errors.js
@@ -11,6 +11,18 @@ class UnexpectedPeerError extends Error {
   }
 }
 
-module.exports = {
-  UnexpectedPeerError
+class InvalidCryptoExchangeError extends Error {
+  constructor (message = 'Invalid crypto exchange') {
+    super(message)
+    this.code = InvalidCryptoExchangeError.code
+  }
+
+  static get code () {
+    return 'ERR_INVALID_CRYPTO_EXCHANGE'
+  }
+}
+
+module.exports = {
+  UnexpectedPeerError,
+  InvalidCryptoExchangeError
 }