chore: merge blocksuite source code (#9213)

blocksuite/framework/global/src/exceptions/index.ts

@@ -0,0 +1,34 @@
+import type { ErrorCode } from './code.js';
+
+export class BlockSuiteError extends Error {
+  code: ErrorCode;
+
+  isFatal: boolean;
+
+  constructor(code: ErrorCode, message: string, options?: { cause: Error }) {
+    super(message, options);
+    this.name = 'BlockSuiteError';
+    this.code = code;
+    this.isFatal = code >= 10000;
+  }
+}
+
+export function handleError(error: Error) {
+  if (!(error instanceof BlockSuiteError)) {
+    throw error;
+  }
+
+  if (error.isFatal) {
+    throw new Error(
+      'A fatal error for BlockSuite occurs, please contact the team if you find this.',
+      { cause: error }
+    );
+  }
+
+  console.error(
+    "A runtime error for BlockSuite occurs, you can ignore this error if it won't break the user experience."
+  );
+  console.error(error.stack);
+}
+
+export * from './code.js';