foreach-prop
Version:
Array-like methods for objects
377 lines (289 loc) • 8.63 kB
JavaScript
import toArray from 'args-to-arr';
import isFunction from 'is-function';
function _unsupportedIterableToArray(o, minLen) {
if (!o) return;
if (typeof o === "string") return _arrayLikeToArray(o, minLen);
var n = Object.prototype.toString.call(o).slice(8, -1);
if (n === "Object" && o.constructor) n = o.constructor.name;
if (n === "Map" || n === "Set") return Array.from(o);
if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
}
function _arrayLikeToArray(arr, len) {
if (len == null || len > arr.length) len = arr.length;
for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
return arr2;
}
function _createForOfIteratorHelperLoose(o, allowArrayLike) {
var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"];
if (it) return (it = it.call(o)).next.bind(it);
if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
if (it) o = it;
var i = 0;
return function () {
if (i >= o.length) return {
done: true
};
return {
done: false,
value: o[i++]
};
};
}
throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
function createErrorFactory(template) {
return function () {
// eslint-disable-next-line prefer-rest-params
const args = arguments;
return new TypeError(template.replace(/\$(\d+)/g, (_, i) => {
// eslint-disable-next-line @typescript-eslint/restrict-template-expressions
return `${args[+i]}`;
}));
};
}
const notEnoughArgs = createErrorFactory('expected $1 arguments, got $0.');
const invalidObject = createErrorFactory('$0 is not an object.');
const invalidCallback = createErrorFactory('$0 is not a function.');
const invalidArray = createErrorFactory('$0 is not an array.');
function create(keys, value) {
if (!Array.isArray(keys)) {
throw invalidArray(keys);
}
const result = {};
for (var _iterator = _createForOfIteratorHelperLoose(keys), _step; !(_step = _iterator()).done;) {
const key = _step.value;
result[key] = value;
}
return result;
}
// eslint-disable-next-line @typescript-eslint/unbound-method
const hasOwn = {}.hasOwnProperty;
function isObject(param) {
return !!param && typeof param === 'object';
}
function wrapFilterCallback(callback, thisArg, object, args, argsLen) {
if (!isFunction(callback)) {
throw invalidCallback(callback);
}
if (argsLen === 2) {
return key => callback.call(thisArg, object[key], key);
}
if (argsLen === 3) {
const extra = args[2];
return key => callback.call(thisArg, object[key], key, extra);
}
const extra = toArray(args, 2);
return key => callback.call(thisArg, object[key], key, ...extra);
}
function wrapReduceCallback(callback, thisArg, object, args, argsLen) {
if (!isFunction(callback)) {
throw invalidCallback(callback);
}
if (argsLen === 3) {
return (key, result) => callback.call(thisArg, result, object[key], key);
}
if (argsLen === 4) {
const extra = args[3];
return (key, result) => callback.call(thisArg, result, object[key], key, extra);
}
const extra = toArray(args, 3);
return (key, result) => callback.call(thisArg, result, object[key], key, ...extra);
}
function every(object, callback) {
// eslint-disable-next-line prefer-rest-params
const args = arguments;
const argsLen = args.length;
if (argsLen < 2) {
throw notEnoughArgs(argsLen, 2);
}
if (!isObject(object)) {
throw invalidObject(object);
}
const wrapped = wrapFilterCallback(callback, this, object, args, argsLen);
for (const key in object) {
if (hasOwn.call(object, key) && !wrapped(key)) {
return false;
}
}
return true;
}
function fill(object, value) {
// eslint-disable-next-line prefer-rest-params
const argsLen = arguments.length;
if (argsLen < 2) {
throw notEnoughArgs(argsLen, 2);
}
if (!isObject(object)) {
throw invalidObject(object);
}
const result = {};
for (const key in object) {
if (hasOwn.call(object, key)) {
result[key] = value;
}
}
return result;
}
function filter(object, callback) {
// eslint-disable-next-line prefer-rest-params
const args = arguments;
const argsLen = args.length;
if (argsLen < 2) {
throw notEnoughArgs(argsLen, 2);
}
if (!isObject(object)) {
throw invalidObject(object);
}
const wrapped = wrapFilterCallback(callback, this, object, args, argsLen);
const result = {};
for (const key in object) {
if (hasOwn.call(object, key) && wrapped(key)) {
result[key] = object[key];
}
}
return result;
}
function find(object, callback) {
// eslint-disable-next-line prefer-rest-params
const args = arguments;
const argsLen = args.length;
if (argsLen < 2) {
throw notEnoughArgs(argsLen, 2);
}
if (!isObject(object)) {
throw invalidObject(object);
}
const wrapped = wrapFilterCallback(callback, this, object, args, argsLen);
for (const key in object) {
if (hasOwn.call(object, key) && wrapped(key)) {
return object[key];
}
}
}
function findKey(object, callback) {
// eslint-disable-next-line prefer-rest-params
const args = arguments;
const argsLen = args.length;
if (argsLen < 2) {
throw notEnoughArgs(argsLen, 2);
}
if (!isObject(object)) {
throw invalidObject(object);
}
const wrapped = wrapFilterCallback(callback, this, object, args, argsLen);
for (const key in object) {
if (hasOwn.call(object, key) && wrapped(key)) {
return key;
}
}
return null;
}
function forEach(object, callback) {
// eslint-disable-next-line prefer-rest-params
const args = arguments;
const argsLen = args.length;
if (argsLen < 2) {
throw notEnoughArgs(argsLen, 2);
}
if (!isObject(object)) {
throw invalidObject(object);
}
const wrapped = wrapFilterCallback(callback, this, object, args, argsLen);
for (const key in object) {
if (hasOwn.call(object, key)) {
wrapped(key);
}
}
}
function keyOf(object, value) {
const argsLen = arguments.length;
if (argsLen < 2) {
throw notEnoughArgs(argsLen, 2);
}
if (!isObject(object)) {
throw invalidObject(object);
}
for (const key in object) {
if (hasOwn.call(object, key) && object[key] === value) {
return key;
}
}
return null;
}
function includes(object, value) {
return keyOf(object, value) !== null;
}
function lastKeyOf(object, value) {
const argsLen = arguments.length;
if (argsLen < 2) {
throw notEnoughArgs(argsLen, 2);
}
if (!isObject(object)) {
throw invalidObject(object);
}
let result = null;
for (const key in object) {
if (hasOwn.call(object, key) && object[key] === value) {
result = key;
}
}
return result;
}
function map(object, callback) {
// eslint-disable-next-line prefer-rest-params
const args = arguments;
const argsLen = args.length;
if (argsLen < 2) {
throw notEnoughArgs(argsLen, 2);
}
if (!isObject(object)) {
throw invalidObject(object);
}
const wrapped = wrapFilterCallback(callback, this, object, args, argsLen);
const result = {};
for (const key in object) {
if (hasOwn.call(object, key)) {
result[key] = wrapped(key);
}
}
return result;
}
function reduce(object, callback, initial) {
// eslint-disable-next-line prefer-rest-params
const args = arguments;
const argsLen = args.length;
if (argsLen < 2) {
throw notEnoughArgs(argsLen, 2);
}
if (!isObject(object)) {
throw invalidObject(object);
}
const wrapped = wrapReduceCallback(callback, this, object, args, argsLen);
let result = initial;
for (const key in object) {
if (hasOwn.call(object, key)) {
result = wrapped(key, result);
}
}
return result;
}
function some(object, callback) {
// eslint-disable-next-line prefer-rest-params
const args = arguments;
const argsLen = args.length;
if (argsLen < 2) {
throw notEnoughArgs(argsLen, 2);
}
if (!isObject(object)) {
throw invalidObject(object);
}
const wrapped = wrapFilterCallback(callback, this, object, args, argsLen);
for (const key in object) {
if (hasOwn.call(object, key) && wrapped(key)) {
return true;
}
}
return false;
}
export { create, every, fill, filter, find, findKey, forEach, includes, keyOf, lastKeyOf, map, reduce, some };
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