--- /dev/null
+'use strict';
+
+/**
+ * Return flexbox spec versions by prefix
+ */
+module.exports = function (prefix) {
+ var spec = void 0;
+ if (prefix === '-webkit- 2009' || prefix === '-moz-') {
+ spec = 2009;
+ } else if (prefix === '-ms-') {
+ spec = 2012;
+ } else if (prefix === '-webkit-') {
+ spec = 'final';
+ }
+
+ if (prefix === '-webkit- 2009') {
+ prefix = '-webkit-';
+ }
+
+ return [spec, prefix];
+};
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