fix: fix some error

Author: underfin

src/index.ts

@@ -30,7 +30,7 @@ import { createFilter } from 'rollup-pluginutils'
 
 const debug = createDebugger('rollup-plugin-vue')
 
-type TemplateCompilerOptions = [TemplateCompiler, CompilerOptions]
+type TemplateCompilers = TemplateCompiler | [TemplateCompiler, CompilerOptions]
 
 export interface Options {
   include: string | RegExp | (string | RegExp)[]
@@ -48,7 +48,7 @@ export interface Options {
   compiler?: SFCTemplateCompileOptions['compiler']
   compilerOptions?: SFCTemplateCompileOptions['compilerOptions']
   transformAssetUrls?: SFCTemplateCompileOptions['transformAssetUrls']
-  templateCompilers?: Record<string, TemplateCompilerOptions>
+  templateCompilers?: Record<string, TemplateCompilers>
 
   // sfc style options
   postcssOptions?: SFCAsyncStyleCompileOptions['postcssOptions']
@@ -140,25 +140,34 @@ export default function PluginVue(userOptions: Partial<Options> = {}): Plugin {
       const query = parseVuePartRequest(id)
       if (query.vue) {
         if (!query.src && !filter(query.filename)) return null
-
         const descriptor = getDescriptor(query.filename)
         const hasScoped = descriptor.styles.some((s) => s.scoped)
         if (query.type === 'template') {
           const compilerKey = query.compiler
           let compiler = options.compiler
           let compilerOptions = options.compilerOptions || {}
           if (compilerKey) {
-            if (
-              options.templateCompilers &&
-              options.templateCompilers[compilerKey]
-            ) {
-              ;[compiler, compilerOptions] = options.templateCompilers[
-                compilerKey
-              ]
+            if (typeof compilerKey === 'string') {
+              if (
+                options.templateCompilers &&
+                options.templateCompilers[compilerKey]
+              ) {
+                const compilers = options.templateCompilers[compilerKey]
+                if (Array.isArray(compilers)) {
+                  ;[compiler, compilerOptions] = compilers
+                } else {
+                  compiler = compilers
+                }
+              } else {
+                this.error({
+                  id: query.filename,
+                  message: `The "${compilerKey}" compiler not found.Please add "templateCompilers" options.`,
+                })
+              }
             } else {
               this.error({
                 id: query.filename,
-                message: `The "${compilerKey}" compiler not found.Please add "templateCompilers" options.`,
+                message: `Please ensure custom template compiler attribute.`,
               })
             }
           }