Ionic android build fails with Could not find plugin "proposal-numeric-separator"

Question

My app working fine in browser and using Cordova Geolocation as plugin when I start an android build I am getting this error

An unhandled exception occurred: [BABEL] /Users/suatkarabacak/Desktop/quarantine/www/2-es2015.js: Could not find plugin "proposal-numeric-separator". Ensure there is an entry in ./available-plugins.js for it. (While processing: "/Users/suatkarabacak/Desktop/quarantine/node_modules/@babel/preset-env/lib/index.js")
See "/private/var/folders/2n/czcjwx7554j_h2hpsj53h81m0000gn/T/ng-ZxzGC4/angular-errors.log" for further details.
[ERROR] An error occurred while running subprocess ng.

From package-lock.json

"@babel/preset-env": {
      "version": "7.8.3",
      "resolved": "https://registry.npmjs.org/@babel/preset-env/-/preset-env-7.8.3.tgz",
      "integrity": "sha512-Rs4RPL2KjSLSE2mWAx5/iCH+GC1ikKdxPrhnRS6PfFVaiZeom22VFKN4X8ZthyN61kAaR05tfXTbCvatl9WIQg==",
      "dev": true,
      "requires": {
        "@babel/compat-data": "^7.8.0",
        "@babel/helper-compilation-targets": "^7.8.3",
        "@babel/helper-module-imports": "^7.8.3",
        "@babel/helper-plugin-utils": "^7.8.3",
        "@babel/plugin-proposal-async-generator-functions": "^7.8.3",
        "@babel/plugin-proposal-dynamic-import": "^7.8.3",
        "@babel/plugin-proposal-json-strings": "^7.8.3",
        "@babel/plugin-proposal-nullish-coalescing-operator": "^7.8.3",
        "@babel/plugin-proposal-object-rest-spread": "^7.8.3",
        "@babel/plugin-proposal-optional-catch-binding": "^7.8.3",
        "@babel/plugin-proposal-optional-chaining": "^7.8.3",
        "@babel/plugin-proposal-unicode-property-regex": "^7.8.3",
        "@babel/plugin-syntax-async-generators": "^7.8.0",
        "@babel/plugin-syntax-dynamic-import": "^7.8.0",
        "@babel/plugin-syntax-json-strings": "^7.8.0",
        "@babel/plugin-syntax-nullish-coalescing-operator": "^7.8.0",
        "@babel/plugin-syntax-object-rest-spread": "^7.8.0",
        "@babel/plugin-syntax-optional-catch-binding": "^7.8.0",
        "@babel/plugin-syntax-optional-chaining": "^7.8.0",
        "@babel/plugin-syntax-top-level-await": "^7.8.3",
        "@babel/plugin-transform-arrow-functions": "^7.8.3",
        "@babel/plugin-transform-async-to-generator": "^7.8.3",
        "@babel/plugin-transform-block-scoped-functions": "^7.8.3",
        "@babel/plugin-transform-block-scoping": "^7.8.3",
        "@babel/plugin-transform-classes": "^7.8.3",
        "@babel/plugin-transform-computed-properties": "^7.8.3",
        "@babel/plugin-transform-destructuring": "^7.8.3",
        "@babel/plugin-transform-dotall-regex": "^7.8.3",
        "@babel/plugin-transform-duplicate-keys": "^7.8.3",
        "@babel/plugin-transform-exponentiation-operator": "^7.8.3",
        "@babel/plugin-transform-for-of": "^7.8.3",
        "@babel/plugin-transform-function-name": "^7.8.3",
        "@babel/plugin-transform-literals": "^7.8.3",
        "@babel/plugin-transform-member-expression-literals": "^7.8.3",
        "@babel/plugin-transform-modules-amd": "^7.8.3",
        "@babel/plugin-transform-modules-commonjs": "^7.8.3",
        "@babel/plugin-transform-modules-systemjs": "^7.8.3",
        "@babel/plugin-transform-modules-umd": "^7.8.3",
        "@babel/plugin-transform-named-capturing-groups-regex": "^7.8.3",
        "@babel/plugin-transform-new-target": "^7.8.3",
        "@babel/plugin-transform-object-super": "^7.8.3",
        "@babel/plugin-transform-parameters": "^7.8.3",
        "@babel/plugin-transform-property-literals": "^7.8.3",
        "@babel/plugin-transform-regenerator": "^7.8.3",
        "@babel/plugin-transform-reserved-words": "^7.8.3",
        "@babel/plugin-transform-shorthand-properties": "^7.8.3",
        "@babel/plugin-transform-spread": "^7.8.3",
        "@babel/plugin-transform-sticky-regex": "^7.8.3",
        "@babel/plugin-transform-template-literals": "^7.8.3",
        "@babel/plugin-transform-typeof-symbol": "^7.8.3",
        "@babel/plugin-transform-unicode-regex": "^7.8.3",
        "@babel/types": "^7.8.3",
        "browserslist": "^4.8.2",
        "core-js-compat": "^3.6.2",
        "invariant": "^2.2.2",
        "levenary": "^1.1.0",
        "semver": "^5.5.0"
      }

Try to change version of babel but it didn't help too. I am getting too much code on question error but I don't know if there is need for any other explanation so I am writing this sentence.

Answer 1

This is how i fixed the exact same exception :

1-Open package.json and add

 "resolutions": {
  "@babel/preset-env": "^7.8.7"
 },

 "dependencies": {..}

2- run npx npm-force-resolutions

3- run npm install

Now you're good to go..

Answer 2

Change your tsconfig.json file target value

form { "target": "es2015" } to { "target": "es5" }

this work for me.