How to use the timm.removeAt function in timm

onRemoveListItem = (ev: SyntheticEvent) => {
    if (!(ev.currentTarget instanceof HTMLElement)) return;
    const [id, idx] = ev.currentTarget.id.split('.');
    const newList = timm.removeAt(this.state[id], Number(idx));
    this.setState({ [id]: newList });
  };

removeLang(idx: number) {
    const nextLangs = timm.removeAt(this.state.langs, idx);
    this.updateLangs(nextLangs);
  }

handleWrapperTriggerRemove = index =>
    this.setState({ values: removeAt(this.state.values, index) });

removeItem(itemIndex) {
    const dbValue = this.getDBValue() || [];
    const updatedValue = removeAt(dbValue, itemIndex);

    this.handleTabActive(0);

    setTimeout(() => {
      this.handleValueChange(updatedValue, { arrayOperation: "remove" });
    }, 0);
  }

removeItem(itemIndex) {
    const dbValue = this.getDBValue() || [];
    const updatedValue = removeAt(dbValue, itemIndex);

    this.handleAccordionActive(0);

    setTimeout(() => {
      this.handleValueChange(updatedValue, { arrayOperation: "remove" });
    }, 0);
  }

removeItem(itemIndex) {
    const dbValue = this.getDBValue() || [];
    const updatedValue = removeAt(dbValue, itemIndex);

    this.handleValueChange(updatedValue, { arrayOperation: "remove" });
  }

handleOptionsRemove = index => {
    const options = removeAt(this.props.options, index);
    this.props.onChange({ options });
  };
  handleKeyUp = e => {