@parcel/optimizer-terser: Unexpected token: operator (*=)

🐛 bug report

Parcel optimizer parser breaks when it tries to parse the code. Here is the link for the reproduction: https://github.com/atom-minimap/minimap/tree/parcel

❯ npm install

> npm run build

> cross-env NODE_ENV=production parcel build --target main lib/main.js

× Build failed.
@parcel/optimizer-terser: Unexpected token: operator (*=)
C:\Users\aminy\@minimap\minimap\lib\mixins\plugin-management.js:22:0
  21 |
> 22 | // Initialize the properties for plugin management.
>    | ^ Unexpected token: operator (*=)
  23 |
  24 | /**
It's likely that Terser doesn't support this syntax yet.
npm ERR! code 1
npm ERR! path C:\Users\aminy\@minimap\minimap
npm ERR! command failed
npm ERR! command C:\WINDOWS\system32\cmd.exe /d /s /c cross-env NODE_ENV=production parcel build --target main lib/main.js

🎛 Configuration (.babelrc, package.json, cli command)

  "targets": {
    "main": {
      "context": "node",
      "engines": {
        "node": ">=12.x"
      },
      "includeNodeModules": {
        "atom": false,
        "electron": false
      },
      "outputFormat": "commonjs",
      "isLibrary": true
    }
  },

🤔 Expected Behavior

Parse and optimize the code

😯 Current Behavior

Fails to parse and optimize

💁 Possible Solution

🔦 Context

Running npm run dev works without issues

💻 Code Sample

https://github.com/atom-minimap/minimap/tree/parcel

🌍 Your Environment

Software	Version(s)
Parcel	^2.0.0-nightly.490
Node	15.5.0
npm/Yarn	6.14.8
Operating System	Win 10

https://github.com/atom-minimap/minimap/pull/736

[DwinaTech]

If you are still have the issue and you are using styled-component then this is the fix I got it works. Add babel-plugin-styled-components to babelrc plugins and package.js dependencies.

{
  "plugins": [
    "babel-plugin-styled-components"
  ]
}

[mischnic]

Is there an ES way to access the exports of the current file?

You don’t need to list them. ns in my example is exactly the same as exports: https://codesandbox.io/s/trusting-dhawan-0zwq5?file=/src/index.js