Move danger to bots directory

Summary:
No logic change here. Part of a plan to consolidate CI-only files amongst .circleci and bots/ directories.
Closes facebook#17807

Differential Revision: D6865976

Pulled By: hramos

fbshipit-source-id: 48607a80dcf8cac1c3c033c18bf5d6dd4cd8e6bf

.circleci/README.md

@@ -0,0 +1,5 @@
+# Circle CI
+
+This directory is home to the Circle CI configuration file. Circle is our continuous integration service provider. You can see the overall status of React Native's builds at https://circleci.com/gh/facebook/react-native
+
+You may also see an individual PR's build status by scrolling down to the Checks section in the PR.

.circleci/config.yml

@@ -12,14 +12,14 @@ aliases:
 
   - &restore-cache-analysis
     keys:
-      - v1-analysis-dependencies-{{ arch }}-{{ checksum "package.json" }}{{ checksum "danger/package.json" }}
+      - v1-analysis-dependencies-{{ arch }}-{{ checksum "package.json" }}{{ checksum "bots/package.json" }}
       # Fallback in case checksum fails
       - v1-analysis-dependencies-{{ arch }}-
   - &save-cache-analysis
     paths:
-      - danger/node_modules
+      - bots/node_modules
       - node_modules
-    key: v1-analysis-dependencies-{{ arch }}-{{ checksum "package.json" }}{{ checksum "danger/package.json" }}
+    key: v1-analysis-dependencies-{{ arch }}-{{ checksum "package.json" }}{{ checksum "bots/package.json" }}
 
   - &restore-cache-android-packages
     keys:
@@ -455,7 +455,7 @@ jobs:
           command: |
             if [ -n "$CIRCLE_PR_NUMBER" ]; then
               yarn add github@0.2.4
-              cd danger
+              cd bots
               yarn install --non-interactive --cache-folder ~/.cache/yarn
             else
               echo "Skipping dependency installation."            
@@ -465,7 +465,7 @@ jobs:
           name: Analyze Pull Request
           command: |
             if [ -n "$CIRCLE_PR_NUMBER" ]; then
-              cd danger && DANGER_GITHUB_API_TOKEN="e622517d9f1136ea8900""07c6373666312cdfaa69" yarn danger
+              cd bots && DANGER_GITHUB_API_TOKEN="e622517d9f1136ea8900""07c6373666312cdfaa69" yarn danger
             else
               echo "Skipping pull request analysis."            
             fi

.gitignore

@@ -36,6 +36,9 @@ buck-out
 /ReactAndroid/src/main/jni/prebuilt/lib/x86/
 /ReactAndroid/src/main/gen
 
+# Watchman
+.watchmanconfig
+
 # Android
 .idea
 .gradle
@@ -47,7 +50,8 @@ local.properties
 node_modules
 *.log
 .nvm
-/danger/node_modules/
+/bots/node_modules/
+*/**/yarn.lock
 
 # OS X
 .DS_Store

bots/README.md

@@ -1 +1,18 @@
-Github bots and messages used by the Facebook Github bot.
+GitHub bots, such as the Danger bot, as well as messages used by the Facebook GitHub bot are all configured in this directory/
+
+## Danger
+
+We use [Danger JS](http://danger.systems/js/) to perform rudimentary maintenance on the React Native repository. 
+
+If you'd like to make changes to the Dangerfile, find an existing PR on the React Native repo and make note of the URL.		
+
+Then, run from the React Native root directory:
+
+```
+cd .circleci
+npm install
+..
+node .circleci/node_modules/.bin/danger pr https://github.com/facebook/react-native/pull/1		
+```
+
+And you will get the responses from parsing the Dangerfile.

danger/dangerfile.js → bots/dangerfile.js

@@ -78,7 +78,7 @@ if (!includesReleaseNotes) {
 
 // Tags PRs that have been submitted by a core contributor.
 // TODO: Switch to using an actual MAINTAINERS file.
-const taskforce = fs.readFileSync('../bots/IssueCommands.txt', 'utf8').split('\n')[0].split(':')[1];
+const taskforce = fs.readFileSync('./IssueCommands.txt', 'utf8').split('\n')[0].split(':')[1];
 const isSubmittedByTaskforce = includes(taskforce, danger.github.pr.user.login);
 if (isSubmittedByTaskforce) {
   markdown('@facebook-github-bot label Core Team');