TheJarX

// https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types
// you can return an array instead of an object
function getDataFromMIME(mime) {
  const [type, subtype, parameter] = mime.split(/[\/\;]/);
  const [paramName, paramValue] = parameter.split('=');
  return {
    type,
    subtype,
    [paramName]: paramValue,
    parameter: [paramName, paramValue]

TheJarX

import { useMutation } from '@apollo/client';
import SOME_MUTATION from 'path/to/your/mutation.graphql';

export default function SomeForm() {
  const [mutate] = useMutation(SOME_MUTATION);

  const handleChange = ({
    target: {
      validity,
      files: [file],

TheJarX

const keyToSnake = word => word.replace(
  /[A-Z]+/,
  match => `_${match.toLowerCase().split('').join('_')}`,
);

const toSnakeCase = (obj) => {
  const entries = Object.entries(obj).map(
    entry => [keyToSnake(entry[0]), entry[1]],
  );