Validation based on value of another field

validation.js

const greaterThanField = (fieldName) => (fieldValue,formData) =>
  fieldValue > formData[fieldName] ? undefined : `Value must be greater that ${fieldName}`;

/* Rest of the component */
  this.state = {
   validation:{
    totalPrice: [greaterThanField("price")]
   }
  }
/* Rest of the component */