addSpecification = (name, value) => ( e ) => {
    
    this.setState({
        [name]: value
    })
  }


<div onClick={addSpecification(‘specifications’, this.state.specifications + 1)}>Text</div>

addSpecification = (e) => {
    const target = e.target.getAttribute('data-target');
    
    this.setState((state) => ({
      [target]: { ...state[target], count: state[target].count + 1 },
    }));
  }

state ={‘specifications: {count: 1}}

this.setState(( { specifications } ) => ( {
      specifications: { ...specifications, count: specifications.count + 1 },
    } ))

addSpecification = (field) => () => {
    this.setState((state) => ({
      [field]: { ...state[field], count: state[field].count + 1 },
    }));
  }