Update vue-eslint-parser to v8 (#1554)

Author: fisker

package.json

@@ -75,7 +75,7 @@
 		"nyc": "^15.1.0",
 		"outdent": "^0.8.0",
 		"typescript": "^4.4.2",
-		"vue-eslint-parser": "^7.11.0",
+		"vue-eslint-parser": "^8.0.0",
 		"xo": "^0.44.0"
 	},
 	"peerDependencies": {

test/utils/parsers.mjs

@@ -59,18 +59,10 @@ const vue = {
 		return require.resolve(this.name);
 	},
 	mergeParserOptions(options) {
-		options = {
+		return {
 			...defaultParserOptions,
 			...options,
 		};
-
-		// The `espree` version in `vue-eslint-parser` does not understand `'latest'` yet.
-		// https://github.com/vuejs/vue-eslint-parser/pull/113
-		if (options.ecmaVersion === 'latest') {
-			options.ecmaVersion = require('espree').latestEcmaVersion;
-		}
-
-		return options;
 	},
 };