Bundler throws get$iterator error

[benzmarkus]

running the bundler results into error. With version v2.5.1 the bundler works.

[14:12:12] erro: There is an error in your styles:
[14:12:12] erro: NoSuchMethodError: method not found: 'get$iterator' (J.getInterceptor$ax(...).get$iterator is not a function) on line (undefined, undefined)

To Reproduce
create a scss file with the following content
=================== content start ===================
@import "~@angular/material/theming";
@import "palette";

// Include non-theme styles for core.
@include mat-core();

// Define a theme.
$primary: mat-palette($mat-liebherr-palette);
$accent: mat-palette($mat-grey, A200, A100, A400);
$warn: mat-palette($mat-deep-orange);
$theme: mat-light-theme($primary, $accent, $warn);

// Include all theme styles for the components.
@include angular-material-theme($theme);
=================== content end ===================

Run the bundler and the error appears

Expected behavior
success

Package version: v3.1.1
Node version: v13.12.0
OS: Windows

[pfeigl]

I just had the same problem when upgrading from 2.5.1 to the latest 3.1 version.

Turns out, that the includePaths option was pretty much string|string[] in 2.5.1 but is now only string[].
This means, you have to have your includePaths configured as an array.

A better error message would have helped, but apart from that, I guess the ticket can be closed.

[hamzahsn]

I can confirm what @pfeigl said about the array, I have faced this issue and it appeared that it is includePaths should be an array, and I think we should close this issue if it's solved.

[griest024]

@pfeigl has the correct solution, this can probably be closed