�PNG  IHDR��;���IDATx��ܻn�0���K�� �)(�pA��� ���7�LeG{�� �§㻢|��ذaÆ 6lذaÆ 6lذaÆ 6lom��$^�y���ذag�5bÆ 6lذaÆ 6lذa{���� 6lذaÆ �`����}H�Fkm�,�m����Ӫ���ô�ô!� �x�|'ܢ˟;�E:���9�&ᶒ�}�{�v]�n&�6� �h��_��t�ڠ͵-ҫ���Z;��Z$�.�P���k�ž)�!��o���>}l�eQfJ�T��u і���چ��\��X=8��Rن4`Vw�l�>����n�G�^��i�s��"ms�$�u��i��?w�bs[m�6�K4���O���.�4��%����/����b�C%��t ��M�ז� �-l�G6�mrz2���s�%�9��s@���-�k�9�=���)������k�B5����\��+͂�Zsٲ ��Rn��~G���R���C����� �wIcI��n7jJ���hۛNCS|���j0��8y�iHKֶۛ�k�Ɉ+;Sz������L/��F�*\��Ԕ�#"5��m�2��[S��������=�g��n�a�P�e�ғ�L�� lذaÆ 6l�^k��̱aÆ 6lذaÆ 6lذa;���� �_��ذaÆ 6lذaÆ 6lذaÆ ���R���IEND�B` /* MIT License http://www.opensource.org/licenses/mit-license.php Author Tobias Koppers @sokra */ "use strict"; /** @typedef {import("../Cache").Etag} Etag */ class MergedEtag { /** * @param {Etag} a first * @param {Etag} b second */ constructor(a, b) { this.a = a; this.b = b; } toString() { return `${this.a.toString()}|${this.b.toString()}`; } } const dualObjectMap = new WeakMap(); const objectStringMap = new WeakMap(); /** * @param {Etag} a first * @param {Etag} b second * @returns {Etag} result */ const mergeEtags = (a, b) => { if (typeof a === "string") { if (typeof b === "string") { return `${a}|${b}`; } else { const temp = b; b = a; a = temp; } } else { if (typeof b !== "string") { // both a and b are objects let map = dualObjectMap.get(a); if (map === undefined) { dualObjectMap.set(a, (map = new WeakMap())); } const mergedEtag = map.get(b); if (mergedEtag === undefined) { const newMergedEtag = new MergedEtag(a, b); map.set(b, newMergedEtag); return newMergedEtag; } else { return mergedEtag; } } } // a is object, b is string let map = objectStringMap.get(a); if (map === undefined) { objectStringMap.set(a, (map = new Map())); } const mergedEtag = map.get(b); if (mergedEtag === undefined) { const newMergedEtag = new MergedEtag(a, b); map.set(b, newMergedEtag); return newMergedEtag; } else { return mergedEtag; } }; module.exports = mergeEtags;