flow like the river

VISUALIZACION/node_modules/polished/lib/helpers/stripUnit.js.flow

@@ -0,0 +1,28 @@
+// @flow
+const cssRegex = /^([+-]?(?:\d+|\d*\.\d+))([a-z]*|%)$/
+
+/**
+ * Returns a given CSS value minus its unit of measure.
+ *
+ * @example
+ * // Styles as object usage
+ * const styles = {
+ *   '--dimension': stripUnit('100px')
+ * }
+ *
+ * // styled-components usage
+ * const div = styled.div`
+ *   --dimension: ${stripUnit('100px')};
+ * `
+ *
+ * // CSS in JS Output
+ *
+ * element {
+ *   '--dimension': 100
+ * }
+ */
+export default function stripUnit(value: string | number): string | number {
+  if (typeof value !== 'string') return value
+  const matchedValue = value.match(cssRegex)
+  return matchedValue ? parseFloat(value) : value
+}