Prepare 1.6.0 release

node_modules/@octokit/rest/plugins/authentication/validate.js

@@ -0,0 +1,21 @@
+module.exports = validateAuth
+
+function validateAuth (auth) {
+  if (typeof auth === 'string') {
+    return
+  }
+
+  if (typeof auth === 'function') {
+    return
+  }
+
+  if (auth.username && auth.password) {
+    return
+  }
+
+  if (auth.clientId && auth.clientSecret) {
+    return
+  }
+
+  throw new Error(`Invalid "auth" option: ${JSON.stringify(auth)}`)
+}