wip: fix template loader injection for 2.6 and below

Author: yyx990803

lib/loaders/pitcher.js

@@ -156,7 +156,7 @@ module.exports.pitch = function (remainingRequest) {
       ...(is27 ? [] : [templateLoaderPath + `??vue-loader-options`]),
       ...preLoaders
     ])
-    // console.log(request)
+
     // the template compiler uses esm exports
     return `export * from ${request}`
   }

lib/plugin-webpack4.js

@@ -88,8 +88,9 @@ class VueLoaderPlugin {
     // match it against the compiled template code inside *.vue files, so that
     // compiled vue render functions receive the same treatment as user code
     // (mostly babel)
+    const { is27 } = resolveCompiler(compiler.options.context)
     let jsRulesForRenderFn = []
-    if (resolveCompiler(compiler.options.context).is27) {
+    if (is27) {
       const matchesJS = createMatcher(`test.js`)
       // const matchesTS = createMatcher(`test.ts`)
       jsRulesForRenderFn = rules
@@ -115,7 +116,7 @@ class VueLoaderPlugin {
     compiler.options.module.rules = [
       pitcher,
       ...jsRulesForRenderFn,
-      templateCompilerRule,
+      ...(is27 ? [templateCompilerRule] : []),
       ...clonedRules,
       ...rules
     ]

lib/plugin-webpack5.js

@@ -141,8 +141,9 @@ class VueLoaderPlugin {
     // match it against the compiled template code inside *.vue files, so that
     // compiled vue render functions receive the same treatment as user code
     // (mostly babel)
+    const { is27 } = resolveCompiler(compiler.options.context)
     let jsRulesForRenderFn = []
-    if (resolveCompiler(compiler.options.context).is27) {
+    if (is27) {
       jsRulesForRenderFn = rules
         .filter(
           r =>
@@ -173,7 +174,7 @@ class VueLoaderPlugin {
     compiler.options.module.rules = [
       pitcher,
       ...jsRulesForRenderFn,
-      templateCompilerRule,
+      ...(is27 ? [templateCompilerRule] : []),
       ...clonedRules,
       ...rules
     ]