@kiwicom/smart-faq/src/shared/relay/utils.js

// @flow

import ObjectHash from 'object-hash';

type Tokens = {
  kwAuthToken: ?string,
  loginToken: ?string,
  simpleToken: ?string,
};

type requesHashType = {|
  operation: { text: string, ... },
  variables: {
    [string]: mixed,
    ...,
  },
|};

export const maybeGetAuthToken = (tokens: Tokens) => {
  /*
   Prefer login tokens over simpleToken because
    simpleToken can be used only for fetching one specific booking
    */
  if (tokens.kwAuthToken || tokens.loginToken) {
    return null;
  }

  return tokens.simpleToken;
};

export const getRequestHash = ({
  operation,
  variables,
}: requesHashType): string =>
  ObjectHash({
    query: operation.text,
    variables,
  });