| #!/usr/bin/env node |
| |
| var fs = require('fs') |
| |
| var browserslist = require('./') |
| var updateDb = require('./update-db') |
| var pkg = require('./package.json') |
| |
| var args = process.argv.slice(2) |
| |
| var USAGE = |
| 'Usage:\n' + |
| ' npx browserslist\n' + |
| ' npx browserslist "QUERIES"\n' + |
| ' npx browserslist --json "QUERIES"\n' + |
| ' npx browserslist --config="path/to/browserlist/file"\n' + |
| ' npx browserslist --coverage "QUERIES"\n' + |
| ' npx browserslist --coverage=US "QUERIES"\n' + |
| ' npx browserslist --coverage=US,RU,global "QUERIES"\n' + |
| ' npx browserslist --env="environment name defined in config"\n' + |
| ' npx browserslist --stats="path/to/browserlist/stats/file"\n' + |
| ' npx browserslist --mobile-to-desktop\n' + |
| ' npx browserslist --ignore-unknown-versions' + |
| ' npx browserslist --update-db' |
| |
| function isArg(arg) { |
| return args.some(function (str) { |
| return str === arg || str.indexOf(arg + '=') === 0 |
| }) |
| } |
| |
| function error(msg) { |
| process.stderr.write('browserslist: ' + msg + '\n') |
| process.exit(1) |
| } |
| |
| if (isArg('--help') || isArg('-h')) { |
| process.stdout.write(pkg.description + '.\n\n' + USAGE + '\n') |
| } else if (isArg('--version') || isArg('-v')) { |
| process.stdout.write('browserslist ' + pkg.version + '\n') |
| } else if (isArg('--update-db')) { |
| /* c8 ignore next 3 */ |
| updateDb(function (str) { |
| process.stdout.write(str) |
| }) |
| } else { |
| var mode = 'browsers' |
| var opts = {} |
| var queries |
| var areas |
| |
| for (var i = 0; i < args.length; i++) { |
| if (args[i][0] !== '-') { |
| queries = args[i].replace(/^["']|["']$/g, '') |
| continue |
| } |
| |
| var arg = args[i].split('=') |
| var name = arg[0] |
| var value = arg[1] |
| |
| if (value) value = value.replace(/^["']|["']$/g, '') |
| |
| if (name === '--config' || name === '-b') { |
| opts.config = value |
| } else if (name === '--env' || name === '-e') { |
| opts.env = value |
| } else if (name === '--stats' || name === '-s') { |
| opts.stats = value |
| } else if (name === '--coverage' || name === '-c') { |
| if (mode !== 'json') mode = 'coverage' |
| if (value) { |
| areas = value.split(',') |
| } else { |
| areas = ['global'] |
| } |
| } else if (name === '--json') { |
| mode = 'json' |
| } else if (name === '--mobile-to-desktop') { |
| /* c8 ignore next */ |
| opts.mobileToDesktop = true |
| } else if (name === '--ignore-unknown-versions') { |
| /* c8 ignore next */ |
| opts.ignoreUnknownVersions = true |
| } else { |
| error('Unknown arguments ' + args[i] + '.\n\n' + USAGE) |
| } |
| } |
| |
| var browsers |
| try { |
| browsers = browserslist(queries, opts) |
| } catch (e) { |
| if (e.name === 'BrowserslistError') { |
| error(e.message) |
| } else /* c8 ignore start */ { |
| throw e |
| } /* c8 ignore end */ |
| } |
| |
| var coverage |
| if (mode === 'browsers') { |
| browsers.forEach(function (browser) { |
| process.stdout.write(browser + '\n') |
| }) |
| } else if (areas) { |
| coverage = areas.map(function (area) { |
| var stats |
| if (area !== 'global') { |
| stats = area |
| } else if (opts.stats) { |
| stats = JSON.parse(fs.readFileSync(opts.stats)) |
| } |
| var result = browserslist.coverage(browsers, stats) |
| var round = Math.round(result * 100) / 100.0 |
| |
| return [area, round] |
| }) |
| |
| if (mode === 'coverage') { |
| var prefix = 'These browsers account for ' |
| process.stdout.write(prefix) |
| coverage.forEach(function (data, index) { |
| var area = data[0] |
| var round = data[1] |
| var end = 'globally' |
| if (area && area !== 'global') { |
| end = 'in the ' + area.toUpperCase() |
| } else if (opts.stats) { |
| end = 'in custom statistics' |
| } |
| |
| if (index !== 0) { |
| process.stdout.write(prefix.replace(/./g, ' ')) |
| } |
| |
| process.stdout.write(round + '% of all users ' + end + '\n') |
| }) |
| } |
| } |
| |
| if (mode === 'json') { |
| var data = { browsers: browsers } |
| if (coverage) { |
| data.coverage = coverage.reduce(function (object, j) { |
| object[j[0]] = j[1] |
| return object |
| }, {}) |
| } |
| process.stdout.write(JSON.stringify(data, null, ' ') + '\n') |
| } |
| } |