add buildkite to ci-services

ci-services/buildkite.js

@@ -0,0 +1,13 @@
+'use strict'
+
+const gitHelpers = require('../lib/git-helpers')
+
+const env = process.env
+
+module.exports = {
+  repoSlug: gitHelpers.getRepoSlug(env.BUILDKITE_REPO),
+  branchName: env.BUILDKITE_BRANCH,
+  firstPush: gitHelpers.getNumberOfCommitsOnBranch(env.BUILDKITE_BRANCH) === 1,
+  correctBuild: env.BUILDKITE_PULL_REQUEST === 'false',
+  uploadBuild: true
+}

ci-services/tests.js

@@ -1,6 +1,7 @@
 const env = process.env
 
 module.exports = {
+  buildkite: () => env.BUILDKITE === 'true',
   circleci: () => env.CIRCLECI === 'true',
   jenkins: () => env.JENKINS_URL !== undefined,
   travis: () => env.TRAVIS === 'true',

lib/git-helpers.js

@@ -12,4 +12,12 @@ module.exports = {
       ).toString()
     )
   }
+
+  getRepoSlug: function getRepoSlug (githubUrl) {
+    var ghRegex = /\S+[:|/](\w+(?:[-]\w+)*)\/(\w+(?:[-]\w+)*)/g
+    var parsed = ghRegex.exec(githubUrl)
+    return(
+      `${parsed[1]}/${parsed[2]}`
+    )
+  }
 }