graphql-compose-relay/lib/globalId.js

Plugin for `graphql-compose` which wraps graphql types with Relay specific logic.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.base64 = base64;
exports.unbase64 = unbase64;
exports.toGlobalId = toGlobalId;
exports.fromGlobalId = fromGlobalId;

function base64(i) {
  return Buffer.from(i, 'ascii').toString('base64');
}

function unbase64(i) {
  return Buffer.from(i, 'base64').toString('ascii');
}
/**
 * Takes a type name and an ID specific to that type name, and returns a
 * "global ID" that is unique among all types.
 */


function toGlobalId(type, id) {
  return base64([type, id].join(':'));
}
/**
 * Takes the "global ID" created by toGlobalID, and returns the type name and ID
 * used to create it.
 */


function fromGlobalId(globalId) {
  const unbasedGlobalId = unbase64(globalId);
  const delimiterPos = unbasedGlobalId.indexOf(':');
  return {
    type: unbasedGlobalId.substring(0, delimiterPos),
    id: unbasedGlobalId.substring(delimiterPos + 1)
  };
}