tf-oninput.ts

(this.assigned as any).oninput = ev => {
    if (this.textToAnalyze !== (this.assigned as HTMLTextAreaElement).value) {
      this.textToAnalyze = (this.assigned as HTMLTextAreaElement).value;
      if (this.toxicityService.analyzed) {
        this.toxicityService.valid = true;
      } else {
        if (this.textToAnalyze.length === 0) {
          this.toxicityService.valid = false;
        } else {
          this.toxicityService.valid = true;
        }
      }
    }
    this.cd.detectChanges();
  };