Typescript this parameters don't work

[ashrafsabrym]

I'm trying to compile a function with this parameters. Part of my code is:

export function DirectiveIserviceIdPrefixController(this: any, $scope: angular.IScope, $attrs: angular.IAttributes)
{
  this.$scope = $scope;
  this.$attrs = $attrs;
}

And I get the error:
Module parse failed: Unexpected keyword 'this' (1:52)

Here's my Webpack configuration for swc:

{
          test: /\.ts$/,
          exclude: [/node_modules/, /wwwroot/, /packages/],
          use: {
            loader: 'swc-loader',
            options: {
              jsc: {
                parser: {
                  syntax: 'typescript'
                }
              }
            }
          }
        }

The code compiles successfully with Babel, but with swc, I have to remove the this parameter and add the noImplicitThis: false configuration to tsconfig for my IDE to ignore it.

[kdy1]

I can't reproduce this.
See kdy1@08bbeff and https://github.com/kdy1/swc-example/tree/ed176bfe70252f997ea3fc5d52dc47f1ca6467e5/inputs/issue-236

What is your swc version?

[ashrafsabrym]

I certify that the issue occurs when using the swc-loader as part of Webpack, but the same code compiles successfully if swc-cli is used.

Please view this repository. It isolates the issue.
Running npm run build:dev will cause the mentioned issue, while npx swc ./directives/directive.ts -d ./ compiles the file successfully.

[kdy1]

I found the issue.
swc transcompiles it to

export function DirectiveController(this, $scope, $attrs) {
    this['$scope'] = $scope;
    this['$attrs'] = $attrs;
}

and webpack cannot understand this syntax.

So I guess swc should remove this parameter.

[ashrafsabrym]

Yes, I see.
That's why in Typescript documentation they call them fake parameters:

this parameters are fake parameters that come first in the parameter list of a function

[kdy1]

As this is a bug fix, I'll publish 1.0.21 soon.

[kdy1]

Fixed with @swc/[email protected]

[swc-bot]

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.