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author | 2020-11-18 23:26:45 +0100 | |
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committer | 2020-11-18 23:26:45 +0100 | |
commit | 81ddf9b700bc48a1f8e472209f080f9c1d9a9b09 (patch) | |
tree | 8b959d50c5a614cbf9fcb346ed556140374d4b6d /node_modules/webpack/lib/util/cleverMerge.js | |
parent | 1870f3fdf43707a15fda0f609a021f516f45eb63 (diff) | |
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rm node_modules
Diffstat (limited to 'node_modules/webpack/lib/util/cleverMerge.js')
-rw-r--r-- | node_modules/webpack/lib/util/cleverMerge.js | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/node_modules/webpack/lib/util/cleverMerge.js b/node_modules/webpack/lib/util/cleverMerge.js deleted file mode 100644 index 23060ce..0000000 --- a/node_modules/webpack/lib/util/cleverMerge.js +++ /dev/null @@ -1,77 +0,0 @@ -/* - MIT License http://www.opensource.org/licenses/mit-license.php - Author Tobias Koppers @sokra -*/ - -"use strict"; - -const mergeCache = new WeakMap(); - -/** - * Merges two given objects and caches the result to avoid computation if same objects passed as arguments again. - * @example - * // performs cleverMerge(first, second), stores the result in WeakMap and returns result - * cachedCleverMerge({a: 1}, {a: 2}) - * {a: 2} - * // when same arguments passed, gets the result from WeakMap and returns it. - * cachedCleverMerge({a: 1}, {a: 2}) - * {a: 2} - * @param {object} first first object - * @param {object} second second object - * @returns {object} merged object of first and second object - */ -const cachedCleverMerge = (first, second) => { - let innerCache = mergeCache.get(first); - if (innerCache === undefined) { - innerCache = new WeakMap(); - mergeCache.set(first, innerCache); - } - const prevMerge = innerCache.get(second); - if (prevMerge !== undefined) return prevMerge; - const newMerge = cleverMerge(first, second); - innerCache.set(second, newMerge); - return newMerge; -}; - -/** - * Merges two objects. Objects are not deeply merged. - * TODO webpack 5: merge objects deeply clever. - * Arrays might reference the old value with "..." - * @param {object} first first object - * @param {object} second second object - * @returns {object} merged object of first and second object - */ -const cleverMerge = (first, second) => { - const newObject = Object.assign({}, first); - for (const key of Object.keys(second)) { - if (!(key in newObject)) { - newObject[key] = second[key]; - continue; - } - const secondValue = second[key]; - if (!Array.isArray(secondValue)) { - newObject[key] = secondValue; - continue; - } - const firstValue = newObject[key]; - if (Array.isArray(firstValue)) { - const newArray = []; - for (const item of secondValue) { - if (item === "...") { - for (const item of firstValue) { - newArray.push(item); - } - } else { - newArray.push(item); - } - } - newObject[key] = newArray; - } else { - newObject[key] = secondValue; - } - } - return newObject; -}; - -exports.cachedCleverMerge = cachedCleverMerge; -exports.cleverMerge = cleverMerge; |