flow like the river

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

@@ -0,0 +1,28 @@
+// @flow
+import pixelsto from '../internalHelpers/_pxto'
+
+/**
+ * Convert pixel value to ems. The default base value is 16px, but can be changed by passing a
+ * second argument to the function.
+ * @function
+ * @param {string|number} pxval
+ * @param {string|number} [base='16px']
+ * @example
+ * // Styles as object usage
+ * const styles = {
+ *   'height': em('16px')
+ * }
+ *
+ * // styled-components usage
+ * const div = styled.div`
+ *   height: ${em('16px')}
+ * `
+ *
+ * // CSS in JS Output
+ *
+ * element {
+ *   'height': '1em'
+ * }
+ */
+const em: (value: string | number, base?: string | number) => string = pixelsto('em')
+export default em