117 lines
3.7 KiB
JavaScript
117 lines
3.7 KiB
JavaScript
"use strict";
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.STATUS_REMOVED = exports.STATUS_REMOVE = exports.STATUS_KEEP = exports.STATUS_ADD = void 0;
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exports.diffKeys = diffKeys;
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exports.parseKeys = parseKeys;
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exports.wrapKeyToObject = wrapKeyToObject;
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var _objectSpread2 = _interopRequireDefault(require("@babel/runtime/helpers/objectSpread2"));
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var _typeof2 = _interopRequireDefault(require("@babel/runtime/helpers/typeof"));
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var STATUS_ADD = 'add';
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exports.STATUS_ADD = STATUS_ADD;
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var STATUS_KEEP = 'keep';
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exports.STATUS_KEEP = STATUS_KEEP;
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var STATUS_REMOVE = 'remove';
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exports.STATUS_REMOVE = STATUS_REMOVE;
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var STATUS_REMOVED = 'removed';
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exports.STATUS_REMOVED = STATUS_REMOVED;
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function wrapKeyToObject(key) {
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var keyObj;
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if (key && (0, _typeof2.default)(key) === 'object' && 'key' in key) {
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keyObj = key;
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} else {
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keyObj = {
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key: key
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};
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}
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return (0, _objectSpread2.default)((0, _objectSpread2.default)({}, keyObj), {}, {
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key: String(keyObj.key)
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});
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}
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function parseKeys() {
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var keys = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
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return keys.map(wrapKeyToObject);
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}
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function diffKeys() {
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var prevKeys = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
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var currentKeys = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
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var list = [];
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var currentIndex = 0;
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var currentLen = currentKeys.length;
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var prevKeyObjects = parseKeys(prevKeys);
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var currentKeyObjects = parseKeys(currentKeys);
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// Check prev keys to insert or keep
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prevKeyObjects.forEach(function (keyObj) {
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var hit = false;
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for (var i = currentIndex; i < currentLen; i += 1) {
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var currentKeyObj = currentKeyObjects[i];
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if (currentKeyObj.key === keyObj.key) {
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// New added keys should add before current key
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if (currentIndex < i) {
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list = list.concat(currentKeyObjects.slice(currentIndex, i).map(function (obj) {
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return (0, _objectSpread2.default)((0, _objectSpread2.default)({}, obj), {}, {
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status: STATUS_ADD
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});
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}));
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currentIndex = i;
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}
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list.push((0, _objectSpread2.default)((0, _objectSpread2.default)({}, currentKeyObj), {}, {
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status: STATUS_KEEP
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}));
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currentIndex += 1;
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hit = true;
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break;
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}
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}
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// If not hit, it means key is removed
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if (!hit) {
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list.push((0, _objectSpread2.default)((0, _objectSpread2.default)({}, keyObj), {}, {
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status: STATUS_REMOVE
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}));
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}
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});
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// Add rest to the list
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if (currentIndex < currentLen) {
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list = list.concat(currentKeyObjects.slice(currentIndex).map(function (obj) {
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return (0, _objectSpread2.default)((0, _objectSpread2.default)({}, obj), {}, {
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status: STATUS_ADD
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});
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}));
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}
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/**
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* Merge same key when it remove and add again:
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* [1 - add, 2 - keep, 1 - remove] -> [1 - keep, 2 - keep]
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*/
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var keys = {};
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list.forEach(function (_ref) {
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var key = _ref.key;
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keys[key] = (keys[key] || 0) + 1;
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});
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var duplicatedKeys = Object.keys(keys).filter(function (key) {
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return keys[key] > 1;
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});
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duplicatedKeys.forEach(function (matchKey) {
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// Remove `STATUS_REMOVE` node.
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list = list.filter(function (_ref2) {
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var key = _ref2.key,
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status = _ref2.status;
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return key !== matchKey || status !== STATUS_REMOVE;
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});
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// Update `STATUS_ADD` to `STATUS_KEEP`
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list.forEach(function (node) {
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if (node.key === matchKey) {
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// eslint-disable-next-line no-param-reassign
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node.status = STATUS_KEEP;
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}
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});
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});
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return list;
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} |