opusdev/vector-similarity-api

1'use strict';2 3import utils from '../utils.js';4 5/**6 * It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z']7 *8 * @param {string} name - The name of the property to get.9 *10 * @returns An array of strings.11 */12function parsePropPath(name) {13  // foo[x][y][z]14  // foo.x.y.z15  // foo-x-y-z16  // foo x y z17  return utils.matchAll(/\w+|\[(\w*)]/g, name).map(match => {18    return match[0] === '[]' ? '' : match[1] || match[0];19  });20}21 22/**23 * Convert an array to an object.24 *25 * @param {Array<any>} arr - The array to convert to an object.26 *27 * @returns An object with the same keys and values as the array.28 */29function arrayToObject(arr) {30  const obj = {};31  const keys = Object.keys(arr);32  let i;33  const len = keys.length;34  let key;35  for (i = 0; i < len; i++) {36    key = keys[i];37    obj[key] = arr[key];38  }39  return obj;40}41 42/**43 * It takes a FormData object and returns a JavaScript object44 *45 * @param {string} formData The FormData object to convert to JSON.46 *47 * @returns {Object<string, any> | null} The converted object.48 */49function formDataToJSON(formData) {50  function buildPath(path, value, target, index) {51    let name = path[index++];52 53    if (name === '__proto__') return true;54 55    const isNumericKey = Number.isFinite(+name);56    const isLast = index >= path.length;57    name = !name && utils.isArray(target) ? target.length : name;58 59    if (isLast) {60      if (utils.hasOwnProp(target, name)) {61        target[name] = [target[name], value];62      } else {63        target[name] = value;64      }65 66      return !isNumericKey;67    }68 69    if (!target[name] || !utils.isObject(target[name])) {70      target[name] = [];71    }72 73    const result = buildPath(path, value, target[name], index);74 75    if (result && utils.isArray(target[name])) {76      target[name] = arrayToObject(target[name]);77    }78 79    return !isNumericKey;80  }81 82  if (utils.isFormData(formData) && utils.isFunction(formData.entries)) {83    const obj = {};84 85    utils.forEachEntry(formData, (name, value) => {86      buildPath(parsePropPath(name), value, obj, 0);87    });88 89    return obj;90  }91 92  return null;93}94 95export default formDataToJSON;96