AOT compilation breaks RegExp in idsRegExp

[Sturgelose]

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I'm submitting a ...

• [X] bug report

• [ ] feature request

• [ ] question about the decisions made in the repository

• If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem Create an angulartics module with configuration:

const ANGULARTICS_CONF: Partial<Angulartics2Settings> = {
  pageTracking: {
    clearIds: true,
    idsRegExp: new Regex('^(([a-z0-9]{14}(:[a-z0-9]{6})?)|DEMO)$'),
    clearQueryParams: true
  }
};

And compile the application with AOT.

Then, check any URL matching this regex

NOTE: I'm using this RegEx as example, but this happens with any other Regex as well

• What is the expected behavior?

The ids matching the regex to be filtered out. However, this does not happen. I've ben debugging in lower level, and it seems that using a regular expression with new Regex() ends with Angulartics2 loading the default value instead.

A workaround is to write it as a string and skipping the typescript checks.

// @ts-ignore
    idsRegExp: '^(([a-z0-9]{14}(:[a-z0-9]{6})?)|DEMO)$',

I have also seen that I'm not the only one with the same issue: https://stackoverflow.com/questions/54826529/angulartics-new-regexp-doesnt-appear-in-aot

• What is the motivation / use case for changing the behavior? If you try with JIT, it works as expected, but AOT seems to be breaking the regex somehow.

• Environment:

Angular CLI: 7.3.3
Node: 11.9.0
OS: darwin x64
Angular: 7.2.6
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router, service-worker

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.13.3
@angular-devkit/build-angular     0.13.3
@angular-devkit/build-optimizer   0.13.3
@angular-devkit/build-webpack     0.13.3
@angular-devkit/core              7.3.3
@angular-devkit/schematics        7.3.3
@angular/cdk                      7.3.3
@angular/cli                      7.3.3
@angular/flex-layout              7.0.0-beta.23
@angular/material                 7.3.3
@angular/pwa                      0.13.3
@ngtools/webpack                  7.3.3
@schematics/angular               7.3.3
@schematics/update                0.13.3
rxjs                              6.4.0
typescript                        3.2.4
webpack                           4.29.0

[mtraynham]

I ran into this as well. I've reported it to the Angular repo here https://github.com/angular/angular/issues/29668

Thanks for the string workaround though, seems like it should work for the regex match here.