Security upgrades

node_modules/@material-ui/system/es/compose.js

@@ -0,0 +1,35 @@
+import _extends from "@babel/runtime/helpers/esm/extends";
+import merge from './merge';
+
+function compose(...styles) {
+  const fn = props => styles.reduce((acc, style) => {
+    const output = style(props);
+
+    if (output) {
+      return merge(acc, output);
+    }
+
+    return acc;
+  }, {}); // Alternative approach that doesn't yield any performance gain.
+  // const handlers = styles.reduce((acc, style) => {
+  //   style.filterProps.forEach(prop => {
+  //     acc[prop] = style;
+  //   });
+  //   return acc;
+  // }, {});
+  // const fn = props => {
+  //   return Object.keys(props).reduce((acc, prop) => {
+  //     if (handlers[prop]) {
+  //       return merge(acc, handlers[prop](props));
+  //     }
+  //     return acc;
+  //   }, {});
+  // };
+
+
+  fn.propTypes = process.env.NODE_ENV !== 'production' ? styles.reduce((acc, style) => _extends(acc, style.propTypes), {}) : {};
+  fn.filterProps = styles.reduce((acc, style) => acc.concat(style.filterProps), []);
+  return fn;
+}
+
+export default compose;