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157 lines
4.8 KiB
157 lines
4.8 KiB
'use strict';
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var _values2 = require('lodash/values');
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var _values3 = _interopRequireDefault(_values2);
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var _unionWith2 = require('lodash/unionWith');
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var _unionWith3 = _interopRequireDefault(_unionWith2);
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var _mergeWith2 = require('lodash/mergeWith');
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var _mergeWith3 = _interopRequireDefault(_mergeWith2);
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var _differenceWith2 = require('lodash/differenceWith');
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var _differenceWith3 = _interopRequireDefault(_differenceWith2);
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var _joinArrays = require('./join-arrays');
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var _joinArrays2 = _interopRequireDefault(_joinArrays);
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var _joinArraysSmart = require('./join-arrays-smart');
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var _unique = require('./unique');
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var _unique2 = _interopRequireDefault(_unique);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }
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function merge() {
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for (var _len = arguments.length, sources = Array(_len), _key = 0; _key < _len; _key++) {
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sources[_key] = arguments[_key];
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}
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// This supports
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// merge([<object>] | ...<object>)
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// merge({ customizeArray: <fn>, customizeObject: <fn>})([<object>] | ...<object>)
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// where fn = (a, b, key)
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if (sources.length === 1) {
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if (Array.isArray(sources[0])) {
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return _mergeWith3.default.apply(undefined, [{}].concat(_toConsumableArray(sources[0]), [(0, _joinArrays2.default)(sources[0])]));
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}
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if (sources[0].customizeArray || sources[0].customizeObject) {
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return function () {
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for (var _len2 = arguments.length, structures = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
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structures[_key2] = arguments[_key2];
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}
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if (Array.isArray(structures[0])) {
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return _mergeWith3.default.apply(undefined, [{}].concat(_toConsumableArray(structures[0]), [(0, _joinArrays2.default)(sources[0])]));
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}
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return _mergeWith3.default.apply(undefined, [{}].concat(structures, [(0, _joinArrays2.default)(sources[0])]));
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};
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}
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return sources[0];
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}
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return _mergeWith3.default.apply(undefined, [{}].concat(sources, [(0, _joinArrays2.default)()]));
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}
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var mergeSmart = merge({
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customizeArray: function customizeArray(a, b, key) {
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if (isRule(key.split('.').slice(-1)[0])) {
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return (0, _unionWith3.default)(a, b, _joinArraysSmart.uniteRules.bind(null, {}, key));
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}
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return null;
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}
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});
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var mergeMultiple = function mergeMultiple() {
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for (var _len3 = arguments.length, sources = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
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sources[_key3] = arguments[_key3];
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}
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return (0, _values3.default)(merge(sources));
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};
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// rules: { <field>: <'append'|'prepend'|'replace'> }
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// All default to append but you can override here
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var mergeStrategy = function mergeStrategy() {
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var rules = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
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return merge({
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customizeArray: _customizeArray(rules),
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customizeObject: customizeObject(rules)
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});
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};
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var mergeSmartStrategy = function mergeSmartStrategy() {
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var rules = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
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return merge({
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customizeArray: function customizeArray(a, b, key) {
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var topKey = key.split('.').slice(-1)[0];
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if (isRule(topKey)) {
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switch (rules[key]) {
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case 'prepend':
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return [].concat(_toConsumableArray((0, _differenceWith3.default)(b, a, function (newRule, seenRule) {
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return (0, _joinArraysSmart.uniteRules)(rules, key, newRule, seenRule, 'prepend');
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})), _toConsumableArray(a));
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case 'replace':
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return b;
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default:
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// append
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return (0, _unionWith3.default)(a, b, _joinArraysSmart.uniteRules.bind(null, rules, key));
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}
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}
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return _customizeArray(rules)(a, b, key);
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},
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customizeObject: customizeObject(rules)
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});
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};
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function _customizeArray(rules) {
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return function (a, b, key) {
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switch (rules[key]) {
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case 'prepend':
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return [].concat(_toConsumableArray(b), _toConsumableArray(a));
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case 'replace':
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return b;
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default:
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// append
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return false;
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}
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};
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}
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function customizeObject(rules) {
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return function (a, b, key) {
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switch (rules[key]) {
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case 'prepend':
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return (0, _mergeWith3.default)({}, b, a, (0, _joinArrays2.default)());
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case 'replace':
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return b;
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default:
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// append
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return false;
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}
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};
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}
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function isRule(key) {
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return ['preLoaders', 'loaders', 'postLoaders', 'rules'].indexOf(key) >= 0;
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}
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module.exports = merge;
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module.exports.multiple = mergeMultiple;
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module.exports.smart = mergeSmart;
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module.exports.strategy = mergeStrategy;
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module.exports.smartStrategy = mergeSmartStrategy;
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module.exports.unique = _unique2.default;
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