1 | #!/usr/bin/env node
|
2 |
|
3 | var fs = require('fs')
|
4 |
|
5 | var browserslist = require('./')
|
6 | var pkg = require('./package.json')
|
7 | var args = process.argv.slice(2)
|
8 |
|
9 | var USAGE = 'Usage:\n' +
|
10 | ' ' + pkg.name + '\n' +
|
11 | ' ' + pkg.name + ' "QUERIES"\n' +
|
12 | ' ' + pkg.name + ' --config="path/to/browserlist/file"\n' +
|
13 | ' ' + pkg.name + ' --coverage "QUERIES"\n' +
|
14 | ' ' + pkg.name + ' --coverage=US "QUERIES"\n' +
|
15 | ' ' + pkg.name + ' --env="environment name defined in config"\n' +
|
16 | ' ' + pkg.name + ' --stats="path/to/browserlist/stats/file"'
|
17 |
|
18 | function isArg (arg) {
|
19 | return args.some(function (str) {
|
20 | return str === arg || str.indexOf(arg + '=') === 0
|
21 | })
|
22 | }
|
23 |
|
24 | function error (msg) {
|
25 | process.stderr.write(pkg.name + ': ' + msg + '\n')
|
26 | process.exit(1)
|
27 | }
|
28 |
|
29 | if (isArg('--help') || isArg('-h')) {
|
30 | process.stdout.write(pkg.description + '.\n\n' + USAGE + '\n')
|
31 | } else if (isArg('--version') || isArg('-v')) {
|
32 | process.stdout.write(pkg.name + ' ' + pkg.version + '\n')
|
33 | } else {
|
34 | var mode = 'browsers'
|
35 | var opts = { }
|
36 | var queries
|
37 | var country
|
38 |
|
39 | for (var i = 0; i < args.length; i++) {
|
40 | if (args[i][0] !== '-') {
|
41 | queries = args[i].replace(/^['"]|['"]$/g, '')
|
42 | continue
|
43 | }
|
44 |
|
45 | var arg = args[i].split('=')
|
46 | var name = arg[0]
|
47 | var value = arg[1]
|
48 |
|
49 | if (value) value = value.replace(/^['"]|['"]$/g, '')
|
50 |
|
51 | if (name === '--config' || name === '-b') {
|
52 | opts.config = value
|
53 | } else if (name === '--env' || name === '-e') {
|
54 | opts.env = value
|
55 | } else if (name === '--stats' || name === '-s') {
|
56 | opts.stats = value
|
57 | } else if (name === '--coverage' || name === '-c') {
|
58 | mode = 'coverage'
|
59 | if (value) country = value
|
60 | } else {
|
61 | error('Unknown arguments ' + args[i] + '.\n\n' + USAGE)
|
62 | }
|
63 | }
|
64 |
|
65 | if (!queries && !opts.config) {
|
66 | if (browserslist.findConfig(process.cwd())) {
|
67 | opts.path = process.cwd()
|
68 | } else {
|
69 | error(
|
70 | 'Browserslist config did not found. ' +
|
71 | 'Define queries or config path.' +
|
72 | '\n\n' + USAGE
|
73 | )
|
74 | }
|
75 | }
|
76 |
|
77 | var browsers
|
78 | try {
|
79 | browsers = browserslist(queries, opts)
|
80 | } catch (e) {
|
81 | if (e.name === 'BrowserslistError') {
|
82 | error(e.message)
|
83 | } else {
|
84 | throw e
|
85 | }
|
86 | }
|
87 |
|
88 | if (mode === 'browsers') {
|
89 | browsers.forEach(function (browser) {
|
90 | process.stdout.write(browser + '\n')
|
91 | })
|
92 | } else {
|
93 | var stats
|
94 | if (country) {
|
95 | stats = country
|
96 | } else if (opts.stats) {
|
97 | stats = JSON.parse(fs.readFileSync(opts.stats))
|
98 | }
|
99 | var result = browserslist.coverage(browsers, stats)
|
100 | var round = Math.round(result * 100) / 100.0
|
101 |
|
102 | var end = 'globally'
|
103 | if (country && country !== 'global') {
|
104 | end = 'in the ' + country.toUpperCase()
|
105 | } else if (opts.stats) {
|
106 | end = 'in custom statistics'
|
107 | }
|
108 |
|
109 | process.stdout.write(
|
110 | 'These browsers account for ' + round + '% of all users ' +
|
111 | end + '\n')
|
112 | }
|
113 | }
|