58 lines
1.7 KiB
JavaScript
58 lines
1.7 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = unpackFeature;
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var _statuses = require('../lib/statuses');
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var _statuses2 = _interopRequireDefault(_statuses);
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var _supported = require('../lib/supported');
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var _supported2 = _interopRequireDefault(_supported);
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var _browsers = require('./browsers');
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var _browserVersions = require('./browserVersions');
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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var MATH2LOG = Math.log(2);
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function unpackSupport(cipher) {
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// bit flags
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var stats = Object.keys(_supported2.default).reduce(function (list, support) {
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if (cipher & _supported2.default[support]) list.push(support);
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return list;
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}, []);
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// notes
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var notes = cipher >> 7;
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var notesArray = [];
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while (notes) {
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var note = Math.floor(Math.log(notes) / MATH2LOG) + 1;
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notesArray.unshift('#' + note);
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notes -= Math.pow(2, note - 1);
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}
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return stats.concat(notesArray).join(' ');
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}
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function unpackFeature(packed) {
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var unpacked = { status: _statuses2.default[packed.B], title: packed.C };
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unpacked.stats = Object.keys(packed.A).reduce(function (browserStats, key) {
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var browser = packed.A[key];
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browserStats[_browsers.browsers[key]] = Object.keys(browser).reduce(function (stats, support) {
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var packedVersions = browser[support].split(' ');
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var unpacked = unpackSupport(support);
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packedVersions.forEach(function (v) {
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return stats[_browserVersions.browserVersions[v]] = unpacked;
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});
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return stats;
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}, {});
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return browserStats;
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}, {});
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return unpacked;
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} |