Angular6 matInput Validators.pattern for phone numbers

I love that Material input has a built in validator for email

  myFormControl = new FormControl('', [
    Validators.required,
    Validators.email
  ]);

But there's not one for phone numbers. In the above myFormControl, I changed the email Validator to a pattern to broadly handle phone numbers...

  myFormControl = new FormControl('', [
    Validators.required,
    Validators.pattern('^(\+\d{1,2}\s)?\(?\d{3}\)?[\s.-]\d{3}[\s.-]\d{4}$')
  ]);

However, when I attempt to create an HTML to handle phone number input...

  <mat-form-field class="form-field">
      <input matInput placeholder="Phone Number" [formControl]="myIDFormControl" 
        [errorStateMatcher]="matcher">
      <mat-hint>Must be a valid phone number</mat-hint>
      <mat-error *ngIf="myIDFormControl.hasError('pattern') && !myIDFormControl.hasError('required')">
        Please enter a valid phone number
      </mat-error>
      <mat-error *ngIf="myIDFormControl.hasError('required')">
        Phone number is <strong>required</strong>
      </mat-error>
    </mat-form-field>

I get this error...

ERROR SyntaxError: "nothing to repeat"

I think it has to do with the formatting of the RegEx in the Validators.pattern. However, I have tried about 5 different canned RegEx's for phone numbers and they all seem to produce this error.

What is a pattern that will work in Angular6 Material for this need?