1 files changed, 13 insertions, 0 deletions
diff --git a/vanilla/node_modules/postcss/lib/warn-once.js b/vanilla/node_modules/postcss/lib/warn-once.js
new file mode 100644
index 0000000..316e1cf
--- /dev/null
+++ b/vanilla/node_modules/postcss/lib/warn-once.js
@@ -0,0 +1,13 @@
+/* eslint-disable no-console */
+'use strict'
+
+let printed = {}
+
+module.exports = function warnOnce(message) {
+  if (printed[message]) return
+  printed[message] = true
+
+  if (typeof console !== 'undefined' && console.warn) {
+    console.warn(message)
+  }
+}