Method _isValidIndex

src/cdk/stepper/stepper.ts:617–619

Checks whether the passed-in index is a valid step index.

(index: number)

  /** Checks whether the passed-in index is a valid step index. */
  private _isValidIndex(index: number): boolean {
    return index > -1 && (!this.steps || index < this.steps.length);
  }
}