Add resource to check the current git state before versioning

Author: leebyron

package.json

@@ -34,7 +34,7 @@
     "watch": "babel resources/watch.js | node",
     "cover": "babel-node node_modules/.bin/isparta cover --root src --report html node_modules/.bin/_mocha -- $npm_package_options_mocha",
     "cover:lcov": "babel-node node_modules/.bin/isparta cover --root src --report lcovonly node_modules/.bin/_mocha -- $npm_package_options_mocha",
-    "preversion": "npm test",
+    "preversion": ". ./resources/checkgit.sh && npm test",
     "prepublish": ". ./resources/prepublish.sh"
   },
   "dependencies": {

resources/checkgit.sh

@@ -0,0 +1,27 @@
+#
+# This script determines if current git state is the up to date master. If so
+# it exits normally. If not it prompts for an explicit continue. This script
+# intends to protect from versioning for NPM without first pushing changes
+# and including any changes on master.
+#
+
+# First fetch to ensure git is up to date. Fail-fast if this fails.
+git fetch;
+if [[ $? -ne 0 ]]; then exit 1; fi;
+
+# Extract useful information.
+GITBRANCH=$(git branch -v 2> /dev/null | sed '/^[^*]/d');
+GITBRANCHNAME=$(echo "$GITBRANCH" | sed 's/* \([A-Za-z0-9_\-]*\).*/\1/');
+GITBRANCHSYNC=$(echo "$GITBRANCH" | sed 's/* [^[]*.\([^]]*\).*/\1/');
+
+# Check if master is checked out
+if [ "$GITBRANCHNAME" != "master" ]; then
+  read -p "Git not on master but $GITBRANCHNAME. Continue? (y|N) " yn;
+  if [ "$yn" != "y" ]; then exit 1; fi;
+fi;
+
+# Check if branch is synced with remote
+if [ "$GITBRANCHSYNC" != "" ]; then
+  read -p "Git not up to date but $GITBRANCHSYNC. Continue? (y|N) " yn;
+  if [ "$yn" != "y" ]; then exit 1; fi;
+fi;