Duplicate plugin/preset detected

👋, with 0.16.1 the following error throws on rebuild

(node:59760) UnhandledPromiseRejectionWarning: ModuleBuildError: Module build failed (from /Users/bobisjan/Developer/zonky-app/node_modules/babel-loader/lib/index.js):

(node:59760) UnhandledPromiseRejectionWarning: ModuleBuildError: Module build failed (from /Users/bobisjan/Developer/zonky-app/node_modules/babel-loader/lib/index.js):
Error: Duplicate plugin/preset detected.
If you'd like to use two separate instances of a plugin,
they need separate names, e.g.

  plugins: [
    ['some-plugin', {}],
    ['some-plugin', {}, 'some unique name'],
  ]

Duplicates detected are:
[
  {
    "alias": "/Users/bobisjan/Developer/zonky-app/node_modules/@babel/plugin-proposal-optional-chaining/lib/index.js",
    "dirname": "/Users/bobisjan/Developer/zonky-app",
    "ownPass": false,
    "file": {
      "request": "/Users/bobisjan/Developer/zonky-app/node_modules/@babel/plugin-proposal-optional-chaining/lib/index.js",
      "resolved": "/Users/bobisjan/Developer/zonky-app/node_modules/@babel/plugin-proposal-optional-chaining/lib/index.js"
    }
  },
  {
    "alias": "/Users/bobisjan/Developer/zonky-app/node_modules/@babel/plugin-proposal-optional-chaining/lib/index.js",
    "dirname": "/Users/bobisjan/Developer/zonky-app",
    "ownPass": false,
    "file": {
      "request": "/Users/bobisjan/Developer/zonky-app/node_modules/@babel/plugin-proposal-optional-chaining/lib/index.js",
      "resolved": "/Users/bobisjan/Developer/zonky-app/node_modules/@babel/plugin-proposal-optional-chaining/lib/index.js"
    }
  }
]
    at assertNoDuplicates (/Users/bobisjan/Developer/zonky-app/node_modules/@babel/core/lib/config/config-descriptors.js:206:13)
    at createDescriptors (/Users/bobisjan/Developer/zonky-app/node_modules/@babel/core/lib/config/config-descriptors.js:114:3)
    at createPluginDescriptors (/Users/bobisjan/Developer/zonky-app/node_modules/@babel/core/lib/config/config-descriptors.js:105:10)
    at alias (/Users/bobisjan/Developer/zonky-app/node_modules/@babel/core/lib/config/config-descriptors.js:63:53)
    at cachedFunction (/Users/bobisjan/Developer/zonky-app/node_modules/@babel/core/lib/config/caching.js:62:27)
    at cachedFunction.next (<anonymous>:null:null)
    at evaluateSync (/Users/bobisjan/Developer/zonky-app/node_modules/gensync/index.js:244:28)
    at sync (/Users/bobisjan/Developer/zonky-app/node_modules/gensync/index.js:84:14)
    at plugins.plugins (/Users/bobisjan/Developer/zonky-app/node_modules/@babel/core/lib/config/config-descriptors.js:28:77)
    at mergeChainOpts (/Users/bobisjan/Developer/zonky-app/node_modules/@babel/core/lib/config/config-chain.js:319:26)
    at /Users/bobisjan/Developer/zonky-app/node_modules/@babel/core/lib/config/config-chain.js:283:7
    at Generator.next (<anonymous>:null:null)
    at buildRootChain (/Users/bobisjan/Developer/zonky-app/node_modules/@babel/core/lib/config/config-chain.js:68:36)
    at buildRootChain.next (<anonymous>:null:null)
    at loadPrivatePartialConfig (/Users/bobisjan/Developer/zonky-app/node_modules/@babel/core/lib/config/partial.js:95:62)
    at loadPrivatePartialConfig.next (<anonymous>:null:null)
    at Function.<anonymous> (/Users/bobisjan/Developer/zonky-app/node_modules/@babel/core/lib/config/partial.js:120:25)
    at Generator.next (<anonymous>:null:null)
    at evaluateSync (/Users/bobisjan/Developer/zonky-app/node_modules/gensync/index.js:244:28)
    at Function.sync (/Users/bobisjan/Developer/zonky-app/node_modules/gensync/index.js:84:14)
    at Object.<anonymous> (/Users/bobisjan/Developer/zonky-app/node_modules/@babel/core/lib/config/index.js:41:61)
    at Object.<anonymous> (/Users/bobisjan/Developer/zonky-app/node_modules/babel-loader/lib/index.js:151:26)
    at Generator.next (<anonymous>:null:null)
    at asyncGeneratorStep (/Users/bobisjan/Developer/zonky-app/node_modules/babel-loader/lib/index.js:3:103)
    at _next (/Users/bobisjan/Developer/zonky-app/node_modules/babel-loader/lib/index.js:5:194)
    at /Users/bobisjan/Developer/zonky-app/node_modules/babel-loader/lib/index.js:5:364
    at new Promise (<anonymous>:null:null)
    at Object.<anonymous> (/Users/bobisjan/Developer/zonky-app/node_modules/babel-loader/lib/index.js:5:97)
    at Object.loader (/Users/bobisjan/Developer/zonky-app/node_modules/babel-loader/lib/index.js:64:18)
    at Object.<anonymous> (/Users/bobisjan/Developer/zonky-app/node_modules/babel-loader/lib/index.js:59:12)
    at runLoaders (/Users/bobisjan/Developer/zonky-app/node_modules/@embroider/webpack/node_modules/webpack/lib/NormalModule.js:316:20)
    at /Users/bobisjan/Developer/zonky-app/node_modules/loader-runner/lib/LoaderRunner.js:367:11
    at /Users/bobisjan/Developer/zonky-app/node_modules/loader-runner/lib/LoaderRunner.js:233:18
    at context.callback (/Users/bobisjan/Developer/zonky-app/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
    at loader.call.then.err (/Users/bobisjan/Developer/zonky-app/node_modules/babel-loader/lib/index.js:59:103)

[NullVoxPopuli]

output of yarn why, if that helps

$ yarn why @babel/plugin-proposal-optional-chaining
yarn why v1.22.4
[1/4] Why do we have the module "@babel/plugin-proposal-optional-chaining"...?
[2/4] Initialising dependency graph...
[3/4] Finding dependency...
[4/4] Calculating file sizes...
=> Found "@babel/plugin-proposal-optional-chaining@7.10.1"
info Reasons this module exists
   - "_project_#ember-cli-typescript" depends on it
   - Hoisted from "_project_#ember-cli-typescript#@babel#plugin-proposal-optional-chaining"
   - Hoisted from "_project_#ember-cli-babel#@babel#preset-env#@babel#plugin-proposal-optional-chaining"
   - Hoisted from "_project_#emberclear#@embroider#webpack#@babel#plugin-proposal-optional-chaining"

[GCheung55]

Maybe a shorterm fix: https://github.com/ef4/ember-auto-import/issues/283#issuecomment-622075131