preact

frontend/node_modules/@prefresh/utils/dist/src/index.js

@@ -0,0 +1,46 @@
+const compareSignatures = (prev, next) => {
+  const prevSignature = self.__PREFRESH__.getSignature(prev) || {};
+  const nextSignature = self.__PREFRESH__.getSignature(next) || {};
+
+  if (
+    prevSignature.key !== nextSignature.key ||
+    self.__PREFRESH__.computeKey(prevSignature) !==
+      self.__PREFRESH__.computeKey(nextSignature) ||
+    nextSignature.forceReset
+  ) {
+    self.__PREFRESH__.replaceComponent(prev, next, true);
+  } else {
+    self.__PREFRESH__.replaceComponent(prev, next, false);
+  }
+};
+
+const flush = () => {
+  const pending = [...self.__PREFRESH__.getPendingUpdates()];
+  self.__PREFRESH__.flush();
+
+  if (pending.length > 0) {
+    pending.forEach(([prev, next]) => {
+      compareSignatures(prev, next);
+    });
+  }
+};
+
+const isComponent = exportValue => {
+  if (typeof exportValue === 'function') {
+    if (
+      exportValue.prototype != null &&
+      exportValue.prototype.isReactComponent
+    ) {
+      return true;
+    }
+
+    const name = exportValue.name || exportValue.displayName;
+    return (
+      typeof name === 'string' && name[0] && name[0] == name[0].toUpperCase()
+    );
+  }
+  return false;
+};
+
+exports.flush=flush;
+exports.isComponent=isComponent;