旧项目加入了Vue Test Utils+Jest测试，es6+语法报错，babel也不可以用7，怎么把es6+转译为es5？

Question

旧项目加入了 Vue Test Utils+Jest 测试，es6+ 语法报错，babel 也不可以用 7，怎么把es6+ 转译为es5？es2015 为什么没有生效?

• node 环境 9.8.0
• .babelrc 配置
  
• jest.conf.js配置
  

• package.json 配置

  {
    "scripts": {
      "unit": "jest --config test/unit/jest.conf.js --coverage"
    },
    "dependencies": {
      "@vue/test-utils": "^1.0.0-beta.13",
      "async-validator": "^4.0.7",
      "axios": "^0.16.2",
      "babel-helper-vue-jsx-merge-props": "^2.0.2",
      "babel-plugin-syntax-jsx": "^6.18.0",
      "babel-plugin-transform-vue-jsx": "^3.5.0",
      "formidable": "^1.1.1",
      "node-sass": "^4.5.3",
      "normalize-wheel": "^1.0.1",
      "resize-observer-polyfill": "^1.5.1",
      "sass-loader": "^6.0.6",
      "vue": "2.6.10",
      "vue-i18n": "^7.1.1",
      "vue-router": "^2.6.0"
    },
    "devDependencies": {
      "autoprefixer": "^7.1.2",
      "babel-core": "^6.26.3",
      "babel-eslint": "^7.1.1",
      "babel-jest": "^21.0.2",
      "babel-loader": "^7.1.1",
      "babel-plugin-add-module-exports": "^0.2.1",
      "babel-plugin-module-resolver": "^2.7.1",
      "babel-plugin-transform-runtime": "^6.23.0",
      "babel-polyfill": "^6.26.0",
      "babel-preset-env": "^1.3.2",
      "babel-preset-es2015": "^6.24.1",
      "babel-preset-stage-2": "^6.22.0",
      "babel-register": "^6.22.0",
      "chalk": "^2.0.1",
      "connect-history-api-fallback": "^1.3.0",
      "copy-webpack-plugin": "^4.0.1",
      "cross-env": "^5.1.3",
      "css-loader": "^0.28.0",
      "cssnano": "^3.10.0",
      "eslint": "^3.19.0",
      "eslint-config-standard": "^6.2.1",
      "eslint-friendly-formatter": "^3.0.0",
      "eslint-loader": "^1.7.1",
      "eslint-plugin-html": "^3.0.0",
      "eslint-plugin-promise": "^3.4.0",
      "eslint-plugin-standard": "^2.0.1",
      "eventsource-polyfill": "^0.9.6",
      "express": "^4.14.1",
      "extract-text-webpack-plugin": "^2.0.0",
      "file-loader": "^0.11.1",
      "friendly-errors-webpack-plugin": "^1.1.3",
      "html-webpack-plugin": "^2.28.0",
      "http-proxy-middleware": "^0.17.3",
      "jest": "^22.0.4",
      "jest-serializer-vue": "^0.3.0",
      "jest-transform-stub": "^2.0.0",
      "opn": "^5.1.0",
      "optimize-css-assets-webpack-plugin": "^2.0.0",
      "ora": "^1.2.0",
      "rimraf": "^2.6.0",
      "semver": "^5.3.0",
      "shelljs": "^0.7.6",
      "url-loader": "^0.5.8",
      "vue-jest": "^1.0.2",
      "vue-loader": "^12.1.0",
      "vue-style-loader": "^3.0.1",
      "vue-template-compiler": "2.6.10",
      "webpack": "^2.6.1",
      "webpack-bundle-analyzer": "^2.2.1",
      "webpack-dev-middleware": "^1.10.0",
      "webpack-hot-middleware": "^2.18.0",
      "webpack-merge": "^4.1.0"
    },
    "engines": {
      "node": ">= 4.0.0",
      "npm": ">= 3.0.0"
    },
    "browserslist": [
      "> 1%",
      "last 2 versions",
      "not ie <= 8"
    ]
  }

Answer 1

看起来并不是因为 babel 和 ES6+ 语法的报错啊，更像是因为 inputVal 不 String 类型导致的。
或者说Node版本太低的缘故？(需要12+)

String.prototype.matchAll() - JavaScript | MDN
Symbol.matchAll - JavaScript | MDN