diff --git a/.npmignore b/.npmignore
new file mode 100644
index 000000000..767700f4d
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1,22 @@
+*.css.map
+*.log
+*.map
+*.swo
+*.swp
+*~
+.DS_Store
+.bundle
+.env
+.sass-cache
+/paternslib.sublime-project
+/paternslib.sublime-workspace
+/stamp-yarn
+Gemfile.lock
+cache/
+coverage/
+node_modules/
+src/pat/**/*.css
+stats.html
+stats.json
+test-reports
+webpack/cache/