refactor(tracer-context): 引入ScopeError类并优化错误处理逻辑

- 新增ScopeError自定义错误类，用于区分范围相关错误
- 将error字段重命名为exception以更准确描述其用途
- 优化flush方法，仅在有必要时输出指令序列
- 简化错误处理逻辑，移除冗余的console.error调用
- 确保ScopeError能正确向上抛出而不被捕获

tracers.ts/src/context/tracer-context.ts

@@ -1,5 +1,12 @@
 import type { TracerCommand } from '../types';
 
+class ScopeError extends Error {
+  constructor(message?: string) {
+    super(message);
+    this.name = 'ScopeError';
+  }
+}
+
 const SCOPE_STATE = {
   INITIAL: 'initial',
   SCOPING: 'scoping',
@@ -15,8 +22,8 @@ type Error = {
 type ScopeResult = {
   // 记录指令序列
   commands: TracerCommand[];
-  // 记录错误信息
-  error: Error;
+  // 记录异常信息
+  exception: Error;
   // 检查scope的执行状态
   state: ScopeState;
 };
@@ -24,7 +31,7 @@ type ScopeResult = {
 const createTracerContext = () => {
   const scopeResult: ScopeResult = {
     commands: [],
-    error: {},
+    exception: {},
     state: SCOPE_STATE.INITIAL,
   };
 
@@ -34,15 +41,12 @@ const createTracerContext = () => {
 
   // TODO: 输出指令序列和错误信息
   const flush = () => {
-    const { commands, error } = scopeResult;
-    // if (commands.length > 0 || !!error.stack) {
-    //   console.log('输出指令序列');
-    //   console.log(JSON.stringify({ commands, error }, null, 2));
-    // }
-    console.log('输出指令序列');
-    console.log(JSON.stringify({ commands, error }, null, 2));
+    const { commands, exception } = scopeResult;
+    if (commands.length > 0 || !!exception.stack) {
+      console.log(JSON.stringify({ commands, exception }, null, 2));
+    }
     scopeResult.commands = [];
-    scopeResult.error = {};
+    scopeResult.exception = {};
   };
 
   const getTracerContext = () => {
@@ -54,12 +58,10 @@ const createTracerContext = () => {
 
   const scope = (routine: () => void | Promise<void>) => {
     if (scopeResult.state === SCOPE_STATE.SCOPED) {
-      console.error('多次调用scope方法');
-      throw new Error('[TracerContext] Detect multiple scope.');
+      throw new ScopeError('ScopeError: Detect multiple scope.');
     }
     if (scopeResult.state === SCOPE_STATE.SCOPING) {
-      console.error('嵌套调用scope方法');
-      throw new Error('[TracerContext] Detect nested scope.');
+      throw new ScopeError('ScopeError: Detect nested scope.');
     }
     scopeResult.state = SCOPE_STATE.SCOPING;
     // 如果routine是同步函数，那可能会抛出同步错误，所以需要用try-catch包裹
@@ -67,10 +69,11 @@ const createTracerContext = () => {
       const result = routine();
       if (result instanceof Promise) {
         result
-          .catch((err) => {
-            console.log('异步错误');
-            console.error(err);
-            scopeResult.error.stack = (err as Error).stack;
+          .catch((error) => {
+            if (error instanceof ScopeError) {
+              throw error;
+            }
+            scopeResult.exception.stack = (error as Error).stack;
           })
           .finally(() => {
             scopeResult.state = SCOPE_STATE.SCOPED;
@@ -80,10 +83,11 @@ const createTracerContext = () => {
         scopeResult.state = SCOPE_STATE.SCOPED;
         flush();
       }
-    } catch (err) {
-      console.log('同步错误');
-      console.error(err);
-      scopeResult.error.stack = (err as Error).stack;
+    } catch (error) {
+      if (error instanceof ScopeError) {
+        throw error;
+      }
+      scopeResult.exception.stack = (error as Error).stack;
       scopeResult.state = SCOPE_STATE.SCOPED;
       flush();
     }