kitsu-core/dist/deserialise.js

Simple, lightweight & framework agnostic JSON:API (de)serialsation components

'use strict';

var deattribute = require('./deattribute.js');
var linkRelationships = require('./linkRelationships.js');
require('./filterIncludes.js');
require('./error.js');

function hoistData(response) {
  const seen = new WeakMap();
  const hasOwn = Object.prototype.hasOwnProperty;
  function hoist(object) {
    if (object && typeof object === 'object') {
      if (seen.has(object)) {
        return seen.get(object);
      }
      let out;
      if (Array.isArray(object)) {
        out = [];
        seen.set(object, out);
        let i = 0;
        for (const item of object) {
          out[i] = hoist(item);
          i++;
        }
        return out;
      }
      let onlyData = false;
      for (const key in object) {
        if (!hasOwn.call(object, key)) continue;
        if (key === 'data' && !onlyData) {
          onlyData = true;
        } else {
          onlyData = false;
          break;
        }
      }
      if (onlyData) {
        return hoist(object.data);
      }
      out = {};
      seen.set(object, out);
      for (const key in object) {
        if (hasOwn.call(object, key)) {
          out[key] = hoist(object[key]);
        }
      }
      return out;
    }
    return object;
  }
  return hoist(response);
}
function deserialiseArray(response) {
  const previouslyLinked = {};
  const relationshipCache = {};
  const included = [...response.data.map(item => ({
    ...item,
    relationships: {
      ...item.relationships
    }
  })), ...(response.included || [])];
  for (let value of response.data) {
    value = linkRelationships.linkRelationships(value, included, previouslyLinked, relationshipCache);
    if (value.attributes) value = deattribute.deattribute(value);
    response.data[response.data.indexOf(value)] = value;
  }
  return response;
}
function deserialise(response, options = {
  hoistData: false
}) {
  if (!response) return;
  if (Array.isArray(response.data)) response = deserialiseArray(response);else if (response.included) response.data = linkRelationships.linkRelationships(response.data, response.included);else if (typeof response.data === 'object' && response.data !== null) response.data = linkRelationships.linkRelationships(response.data);
  delete response.included;
  if (response.data?.attributes) response.data = deattribute.deattribute(response.data);
  if (options.hoistData && response.data) {
    response = hoistData(response);
  }
  return response;
}

exports.deserialise = deserialise;