import React from 'react';

export const useNonNullableContext = <T>(
  context: React.Context<T>,
  name?: string
): NonNullable<T> => {
  const maybeContext = React.useContext(context);
  if (maybeContext === null || maybeContext === undefined) {
    throw new Error(`context "${name}" was used without a Provider`);
  }
  return maybeContext;
};