aaac7fed
 liuqimichale
add
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'use strict';
var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();
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); } }
var isEqual = require('lodash.isequal');
var mergeWith = require('lodash.mergewith');
var unionWith = require('lodash.unionwith');
var differenceWith = require('lodash.differencewith');
var isArray = Array.isArray;
module.exports = function uniteRules(newRule, rule, prepend) {
if (String(rule.test) !== String(newRule.test) || newRule.enforce && rule.enforce !== newRule.enforce || newRule.include && !isSameValue(rule.include, newRule.include) || newRule.exclude && !isSameValue(rule.exclude, newRule.exclude)) {
return false;
}
// webpack 2 nested rules support
if (rule.rules) {
rule.rules = prepend ? [].concat(_toConsumableArray(differenceWith(newRule.rules, rule.rules, function (b, a) {
return uniteRules(b, a, true);
})), _toConsumableArray(rule.rules)) : unionWith(rule.rules, newRule.rules, uniteRules);
}
// newRule.loader should always override
if (newRule.loader) {
var optionsKey = newRule.options ? 'options' : newRule.query && 'query';
delete rule.use;
delete rule.loaders;
rule.loader = newRule.loader;
if (optionsKey) {
rule[optionsKey] = newRule[optionsKey];
}
} else if ((rule.use || rule.loaders || rule.loader) && (newRule.use || newRule.loaders)) {
var expandEntry = function expandEntry(loader) {
return typeof loader === 'string' ? { loader: loader } : loader;
};
// this is only here to avoid breaking existing tests
var unwrapEntry = function unwrapEntry(entry) {
return !entry.options && !entry.query ? entry.loader : entry;
};
var entries = void 0;
if (rule.loader) {
var _optionsKey = rule.options ? 'options' : rule.query && 'query';
entries = [{ loader: rule.loader }];
if (_optionsKey) {
entries[0][_optionsKey] = rule[_optionsKey];
}
delete rule.loader;
if (_optionsKey) {
delete rule[_optionsKey];
}
} else {
entries = [].concat(rule.use || rule.loaders).map(expandEntry);
}
var newEntries = [].concat(newRule.use || newRule.loaders).map(expandEntry);
var loadersKey = rule.use || newRule.use ? 'use' : 'loaders';
rule[loadersKey] = prepend ? [].concat(_toConsumableArray(differenceWith(newEntries, entries, uniteEntries)), _toConsumableArray(entries)).map(unwrapEntry) : unionWith(entries, newEntries, uniteEntries).map(unwrapEntry);
}
if (newRule.include) {
rule.include = newRule.include;
}
if (newRule.exclude) {
rule.exclude = newRule.exclude;
}
return true;
};
/**
* Check equality of two values using lodash's isEqual
* Arrays need to be sorted for equality checking
* but clone them first so as not to disrupt the sort order in tests
*/
function isSameValue(a, b) {
var _map = [a, b].map(function (value) {
return isArray(value) ? [].concat(_toConsumableArray(value)).sort() : value;
}),
_map2 = _slicedToArray(_map, 2),
propA = _map2[0],
propB = _map2[1];
return isEqual(propA, propB);
}
function uniteEntries(newEntry, entry) {
var loaderNameRe = /^([^?]+)/ig;
var _entry$loader$match = entry.loader.match(loaderNameRe),
_entry$loader$match2 = _slicedToArray(_entry$loader$match, 1),
loaderName = _entry$loader$match2[0];
var _newEntry$loader$matc = newEntry.loader.match(loaderNameRe),
_newEntry$loader$matc2 = _slicedToArray(_newEntry$loader$matc, 1),
newLoaderName = _newEntry$loader$matc2[0];
if (loaderName !== newLoaderName) {
return false;
}
// Replace query values with newer ones
mergeWith(entry, newEntry);
return true;
}
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