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codeql-action/node_modules/caniuse-lite/dist/unpacker/feature.js
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'use strict' | |
const statuses = require('../lib/statuses') | |
const supported = require('../lib/supported') | |
const browsers = require('./browsers').browsers | |
const versions = require('./browserVersions').browserVersions | |
const MATH2LOG = Math.log(2) | |
function unpackSupport(cipher) { | |
// bit flags | |
let stats = Object.keys(supported).reduce((list, support) => { | |
if (cipher & supported[support]) list.push(support) | |
return list | |
}, []) | |
// notes | |
let notes = cipher >> 7 | |
let notesArray = [] | |
while (notes) { | |
let note = Math.floor(Math.log(notes) / MATH2LOG) + 1 | |
notesArray.unshift(`#${note}`) | |
notes -= Math.pow(2, note - 1) | |
} | |
return stats.concat(notesArray).join(' ') | |
} | |
function unpackFeature(packed) { | |
let unpacked = { status: statuses[packed.B], title: packed.C } | |
unpacked.stats = Object.keys(packed.A).reduce((browserStats, key) => { | |
let browser = packed.A[key] | |
browserStats[browsers[key]] = Object.keys(browser).reduce( | |
(stats, support) => { | |
let packedVersions = browser[support].split(' ') | |
let unpacked2 = unpackSupport(support) | |
packedVersions.forEach(v => (stats[versions[v]] = unpacked2)) | |
return stats | |
}, | |
{} | |
) | |
return browserStats | |
}, {}) | |
return unpacked | |
} | |
module.exports = unpackFeature | |
module.exports.default = unpackFeature |