Vue 3 in iOS 9: Unexpected keyword 'const'. Const declarations are not supported in strict mode - babeljs

Question

My Vue 3 app doesn't work in Safari 9. There is this error in console:
Unexpected keyword 'const'. Const declarations are not supported in strict mode.
My package.json:
{
"name": "test",
"version": "0.1.0",
"private": true,
"scripts": {
"serve": "vue-cli-service serve",
"build": "vue-cli-service build",
"lint": "vue-cli-service lint"
},
"dependencies": {
"#babel/polyfill": "^7.12.1",
"#babel/preset-env": "^7.12.1",
"#babel/runtime-corejs2": "^7.12.5",
"axios": "^0.21.0",
"bootstrap": "^4.5.3",
"core-js": "^3.6.5",
"vue": "^3.0.0",
"vue-axios": "^3.1.3",
"vue-slider-component": "^4.0.0-beta.3"
},
"devDependencies": {
"#vue/babel-preset-app": "^4.5.8",
"#vue/cli-plugin-babel": "~4.5.0",
"#vue/cli-plugin-eslint": "~4.5.0",
"#vue/cli-service": "~4.5.0",
"#vue/compiler-sfc": "^3.0.2",
"babel-eslint": "^10.1.0",
"eslint": "^6.7.2",
"eslint-plugin-vue": "^7.0.0-0",
"sass": "^1.28.0",
"sass-loader": "^10.0.5"
},
"eslintConfig": {
"rules": {},
"root": true,
"env": {
"node": true
},
"extends": [
"plugin:vue/vue3-essential",
"eslint:recommended"
],
"parserOptions": {
"parser": "babel-eslint"
}
},
"browserslist": [
"last 2 versions",
"safari >= 7",
"ios_saf >= 8",
"chrome >= 52"
]
}
My babel.config.js:
module.exports = {
presets: [
['#vue/babel-preset-app']
]
}
I know that the error can be caused by not-transpiled dependencies, but I tried to transpile them in vue.config.js by transpileDependencies option. But doesn't work neither.

Answer 1

So here's an answer for my question: https://github.com/vuejs/vue-cli/issues/6041#issuecomment-722966178
Vue 3 doesn't support iOS 9 yet.