fix(cli): show preprocessor tips once

packages/uni-cli-shared/lib/uni_modules/uni_modules.js

@@ -23,10 +23,14 @@ function parseUniExtApis(vite = true) {
         if (!fs_extra_1.default.existsSync(pkgPath)) {
             return;
         }
+        try {
             const exports = (_b = (_a = JSON.parse(fs_extra_1.default.readFileSync(pkgPath, 'utf8'))) === null || _a === void 0 ? void 0 : _a.uni_modules) === null || _b === void 0 ? void 0 : _b['uni-ext-api'];
             if (exports) {
                 Object.assign(injects, parseInjects(vite, process.env.UNI_PLATFORM === 'h5' ? 'web' : process.env.UNI_PLATFORM, `@/uni_modules/${uniModuleDir}`, exports));
             }
+        }
+        catch (e) {
+        }
     });
     return injects;
 }

packages/vue-cli-plugin-uni/util/format-errors.js

@@ -20,6 +20,8 @@ function formatMessage (msg) {
   return ''
 }
 
+const installPreprocessorTips = {}
+
 function ModuleBuildError (err) {
   const lines = err.message.split('\n')
   let firstLineMessage = lines[0]
@@ -78,6 +80,10 @@ function ModuleBuildError (err) {
       builtinCompile = 'pug/jade'
     }
     if (builtinCompile) {
+      if (installPreprocessorTips[name]) {
+        return false
+      }
+      installPreprocessorTips[name] = true
       installHBuilderXPlugin(name)
       return {
         message: '预编译器错误：代码使用了' + builtinCompile +