[Bug]: @babel/traverse 7.17.10 will remove this assign

[SoloJiang]

💻

• Would you like to work on a fix?

How are you using Babel?

Other (Next.js, Gatsby, vue-cli, ...)

Input code

var Icestore = /** @class */ (function () {
  function Icestore(config) {
      var _this = this;
      // preStore: middleware, model hooks
      this.forEachPlugin('middleware', function (middleware) {
          _this.config.redux.middlewares.push(middleware);
      });
  }

  return Icestore;
}());

Configuration file name

No response

Configuration

No response

Current and expected behavior

Current

var Icestore = /** @class */ (function () {
  function Icestore(config) {

      // preStore: middleware, model hooks
      this.forEachPlugin('middleware', function (middleware) {
          this.config.redux.middlewares.push(middleware);
      });
  }

  return Icestore;
}());

Expected

var Icestore = /** @class */ (function () {
  function Icestore(config) {
      var _this = this;
      // preStore: middleware, model hooks
      this.forEachPlugin('middleware', function (middleware) {
          _this.config.redux.middlewares.push(middleware);
      });
  }

  return Icestore;
}());

Environment

@babel/traverse 7.17.10

I rollbacked to 7.17.9, it worked.

Possible solution

No response

Additional context

No response

[babel-bot]

Hey @SoloJiang! We really appreciate you taking the time to report an issue. The collaborators on this project attempt to help as many people as possible, but we're a limited number of volunteers, so it's possible this won't be addressed swiftly.

If you need any help, or just have general Babel or JavaScript questions, we have a vibrant Slack community that typically always has someone willing to help. You can sign-up here for an invite.

[JLHwung]

Can you post the Babel config? Specifically, are you using babel-plugin-minify-dead-code-elimination?

[SoloJiang]

Can you post the Babel config? Specifically, are you using babel-plugin-minify-dead-code-elimination?

Yes, I used this plugin

[JLHwung]

Duplicate of babel/minify#1028.