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node_modules/postcss-ordered-values/src/rules/flexFlow.js

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+'use strict';
+// flex-flow: <flex-direction> || <flex-wrap>
+
+const flexDirection = new Set([
+  'row',
+  'row-reverse',
+  'column',
+  'column-reverse',
+]);
+
+const flexWrap = new Set(['nowrap', 'wrap', 'wrap-reverse']);
+
+/**
+ * @param {import('postcss-value-parser').ParsedValue} flexFlow
+ * @return {string}
+ */
+module.exports = function normalizeFlexFlow(flexFlow) {
+  let order = {
+    direction: '',
+    wrap: '',
+  };
+
+  flexFlow.walk(({ value }) => {
+    if (flexDirection.has(value.toLowerCase())) {
+      order.direction = value;
+      return;
+    }
+
+    if (flexWrap.has(value.toLowerCase())) {
+      order.wrap = value;
+      return;
+    }
+  });
+
+  return `${order.direction} ${order.wrap}`.trim();
+};