truncate confusing vue loader message

npm/vue2/package.json

@@ -27,6 +27,7 @@
     "@intlify/vue-i18n-loader": "1.0.0",
     "@rollup/plugin-commonjs": "^17.1.0",
     "@rollup/plugin-node-resolve": "^11.1.1",
+    "@rollup/plugin-replace": "^2.3.1",
     "@vue/cli-plugin-babel": "~4.4.0",
     "@vue/cli-service": "~4.4.0",
     "axios": "0.19.2",

npm/vue2/rollup.config.js

@@ -2,6 +2,7 @@ import ts from 'rollup-plugin-typescript2'
 import resolve from '@rollup/plugin-node-resolve'
 import commonjs from '@rollup/plugin-commonjs'
 import json from '@rollup/plugin-json'
+import replace from '@rollup/plugin-replace'
 
 import pkg from './package.json'
 
@@ -29,6 +30,14 @@ function createEntry (options) {
       resolve({ preferBuiltins: true }),
       commonjs(),
       json(),
+      /**
+       * Vue 2 core tries to load require.resolve(`./package.json`) in the browser for the
+       * sole purpose of throwing an error about Vue Loader.
+       * Just truncate this for now for simplicity.
+       */
+      replace({
+        'vueVersion && vueVersion !== packageVersion': JSON.stringify(false),
+      }),
     ],
     output: {
       banner,

yarn.lock

@@ -7917,6 +7917,14 @@
     is-module "^1.0.0"
     resolve "^1.19.0"
 
+"@rollup/plugin-replace@^2.3.1":
+  version "2.4.2"
+  resolved "https://registry.yarnpkg.com/@rollup/plugin-replace/-/plugin-replace-2.4.2.tgz#a2d539314fbc77c244858faa523012825068510a"
+  integrity sha512-IGcu+cydlUMZ5En85jxHH4qj2hta/11BHq95iHEyb2sbgiN0eCdzvUcHw5gt9pBL5lTi4JDYJ1acCoMGpTvEZg==
+  dependencies:
+    "@rollup/pluginutils" "^3.1.0"
+    magic-string "^0.25.7"
+
 "@rollup/plugin-typescript@^8.2.1":
   version "8.2.1"
   resolved "https://registry.yarnpkg.com/@rollup/plugin-typescript/-/plugin-typescript-8.2.1.tgz#f1a32d4030cc83432ce36a80a922280f0f0b5d44"