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@@ -107,23 +107,26 @@
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* Calculate browser version weight
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*
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* @example
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* compareVersions(['1.10.2.1', '1.8.2.1.90']) // 1
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* compareVersions(['1.010.2.1', '1.09.2.1.90']); // 1
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* compareVersions(['1.10.2.1', '1.10.2.1']); // 0
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* compareVersions(['1.10.2.1', '1.0800.2']); // -1
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* compareVersions('1.10.2.1', '1.8.2.1.90') // 1
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* compareVersions('1.010.2.1', '1.09.2.1.90'); // 1
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* compareVersions('1.10.2.1', '1.10.2.1'); // 0
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* compareVersions('1.10.2.1', '1.0800.2'); // -1
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* compareVersions('1.10.2.1', '1.10', true); // 0
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*
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* @param {String} versionA versions versions to compare
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* @param {String} versionB versions versions to compare
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* @param {boolean} [isLoose] enable loose comparison
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* @return {Number} comparison result: -1 when versionA is lower,
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* 1 when versionA is bigger, 0 when both equal
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*/
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/* eslint consistent-return: 1 */
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static compareVersions(versionA, versionB) {
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static compareVersions(versionA, versionB, isLoose = false) {
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// 1) get common precision for both versions, for example for "10.0" and "9" it should be 2
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let precision = Math.max(
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Utils.getVersionPrecision(versionA),
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Utils.getVersionPrecision(versionB),
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);
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const versionAPrecision = Utils.getVersionPrecision(versionA);
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const versionBPrecision = Utils.getVersionPrecision(versionB);
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let precision = Math.max(versionAPrecision, versionBPrecision);
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let lastPrecision = 0;
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const chunks = Utils.map([versionA, versionB], (version) => {
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const delta = precision - Utils.getVersionPrecision(version);
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@@ -135,14 +138,19 @@
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return Utils.map(_version.split('.'), chunk => new Array(20 - chunk.length).join('0') + chunk).reverse();
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});
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// adjust precision for loose comparison
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if (isLoose) {
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lastPrecision = precision - Math.min(versionAPrecision, versionBPrecision);
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}
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// iterate in reverse order by reversed chunks array
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precision -= 1;
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while (precision >= 0) {
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while (precision >= lastPrecision) {
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// 4) compare: "000000009" > "000000010" = false (but "9" > "10" = true)
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if (chunks[0][precision] > chunks[1][precision]) {
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return 1;
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} else if (chunks[0][precision] === chunks[1][precision]) {
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if (precision === 0) {
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if (precision === lastPrecision) {
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// all version chunks are same
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return 0;
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}
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@@ -186,7 +194,7 @@ module.exports = Utils;
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<br class="clear">
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<footer>
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.5.5</a> on Sun Jul 22 2018 19:42:18 GMT+0300 (EEST) using the <a href="https://github.com/clenemt/docdash">docdash</a> theme.
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.5.5</a> on Sat Aug 18 2018 14:14:47 GMT+0300 (EEST) using the <a href="https://github.com/clenemt/docdash">docdash</a> theme.
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</footer>
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<script>prettyPrint();</script>
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