Files F99405577

formDataToJSON.js
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Created: Fri, Jan 24, 06:45

formDataToJSON.js
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	'use strict';

	import utils from '../utils.js';

	/**
	* It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z']
	*
	* @param {string} name - The name of the property to get.
	*
	* @returns An array of strings.
	*/
	function parsePropPath(name) {
	// foo[x][y][z]
	// foo.x.y.z
	// foo-x-y-z
	// foo x y z
	return utils.matchAll(/\w+\|\[(\w*)]/g, name).map(match => {
	return match[0] === '[]' ? '' : match[1] \|\| match[0];
	});
	}

	/**
	* Convert an array to an object.
	*
	* @param {Array<any>} arr - The array to convert to an object.
	*
	* @returns An object with the same keys and values as the array.
	*/
	function arrayToObject(arr) {
	const obj = {};
	const keys = Object.keys(arr);
	let i;
	const len = keys.length;
	let key;
	for (i = 0; i < len; i++) {
	key = keys[i];
	obj[key] = arr[key];
	}
	return obj;
	}

	/**
	* It takes a FormData object and returns a JavaScript object
	*
	* @param {string} formData The FormData object to convert to JSON.
	*
	* @returns {Object<string, any> \| null} The converted object.
	*/
	function formDataToJSON(formData) {
	function buildPath(path, value, target, index) {
	let name = path[index++];
	const isNumericKey = Number.isFinite(+name);
	const isLast = index >= path.length;
	name = !name && utils.isArray(target) ? target.length : name;

	if (isLast) {
	if (utils.hasOwnProp(target, name)) {
	target[name] = [target[name], value];
	} else {
	target[name] = value;
	}

	return !isNumericKey;
	}

	if (!target[name] \|\| !utils.isObject(target[name])) {
	target[name] = [];
	}

	const result = buildPath(path, value, target[name], index);

	if (result && utils.isArray(target[name])) {
	target[name] = arrayToObject(target[name]);
	}

	return !isNumericKey;
	}

	if (utils.isFormData(formData) && utils.isFunction(formData.entries)) {
	const obj = {};

	utils.forEachEntry(formData, (name, value) => {
	buildPath(parsePropPath(name), value, obj, 0);
	});

	return obj;
	}

	return null;
	}

	export default formDataToJSON;

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