graphql-mocks/highlight/utils/reference-set-helpers.js

Tools for setting up graphql test resolvers

'use strict';

var referenceMask = require('./reference-mask.js');

// TODO: When this library supports node >= 22, replace these with actual Set methods
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set#set_composition
function referenceIntersection(groupA, groupB) {
  const maskedGroupA = new Set(groupA.map(referenceMask.maskReference));
  const maskedGroupB = new Set(groupB.map(referenceMask.maskReference));
  const intersection = [];
  for (const maskedGroupAReference of maskedGroupA) {
    if (maskedGroupB.has(maskedGroupAReference)) {
      intersection.push(referenceMask.unmaskReference(maskedGroupAReference));
    }
  }
  return intersection;
}
function referenceDifference(groupA, groupB) {
  if (groupA.length === 0 || groupB.length === 0) {
    return groupA;
  }
  const maskedGroupA = new Set(groupA.map(referenceMask.maskReference));
  const maskedGroupB = new Set(groupB.map(referenceMask.maskReference));
  const difference = [];
  for (const maskedGroupAReference of maskedGroupA) {
    if (!maskedGroupB.has(maskedGroupAReference)) {
      difference.push(referenceMask.unmaskReference(maskedGroupAReference));
    }
  }
  return difference;
}
exports.referenceDifference = referenceDifference;
exports.referenceIntersection = referenceIntersection;
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