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 + ' --json "QUERIES"\n' +
|
13 | ' ' + pkg.name + ' --config="path/to/browserlist/file"\n' +
|
14 | ' ' + pkg.name + ' --coverage "QUERIES"\n' +
|
15 | ' ' + pkg.name + ' --coverage=US "QUERIES"\n' +
|
16 | ' ' + pkg.name + ' --coverage=US,RU,world "QUERIES"\n' +
|
17 | ' ' + pkg.name + ' --env="environment name defined in config"\n' +
|
18 | ' ' + pkg.name + ' --stats="path/to/browserlist/stats/file"'
|
19 |
|
20 | function isArg (arg) {
|
21 | return args.some(function (str) {
|
22 | return str === arg || str.indexOf(arg + '=') === 0
|
23 | })
|
24 | }
|
25 |
|
26 | function error (msg) {
|
27 | process.stderr.write(pkg.name + ': ' + msg + '\n')
|
28 | process.exit(1)
|
29 | }
|
30 |
|
31 | if (isArg('--help') || isArg('-h')) {
|
32 | process.stdout.write(pkg.description + '.\n\n' + USAGE + '\n')
|
33 | } else if (isArg('--version') || isArg('-v')) {
|
34 | process.stdout.write(pkg.name + ' ' + pkg.version + '\n')
|
35 | } else {
|
36 | var mode = 'browsers'
|
37 | var opts = { }
|
38 | var queries
|
39 | var areas
|
40 |
|
41 | for (var i = 0; i < args.length; i++) {
|
42 | if (args[i][0] !== '-') {
|
43 | queries = args[i].replace(/^["']|["']$/g, '')
|
44 | continue
|
45 | }
|
46 |
|
47 | var arg = args[i].split('=')
|
48 | var name = arg[0]
|
49 | var value = arg[1]
|
50 |
|
51 | if (value) value = value.replace(/^["']|["']$/g, '')
|
52 |
|
53 | if (name === '--config' || name === '-b') {
|
54 | opts.config = value
|
55 | } else if (name === '--env' || name === '-e') {
|
56 | opts.env = value
|
57 | } else if (name === '--stats' || name === '-s') {
|
58 | opts.stats = value
|
59 | } else if (name === '--coverage' || name === '-c') {
|
60 | if (mode !== 'json') mode = 'coverage'
|
61 | if (value) {
|
62 | areas = value.split(',')
|
63 | } else {
|
64 | areas = ['global']
|
65 | }
|
66 | } else if (name === '--json') {
|
67 | mode = 'json'
|
68 | } else {
|
69 | error('Unknown arguments ' + args[i] + '.\n\n' + USAGE)
|
70 | }
|
71 | }
|
72 |
|
73 | var browsers
|
74 | try {
|
75 | if (!queries && !opts.config) {
|
76 | if (browserslist.findConfig(process.cwd())) {
|
77 | opts.path = process.cwd()
|
78 | } else {
|
79 | error(
|
80 | 'Browserslist config was not found. ' +
|
81 | 'Define queries or config path.' +
|
82 | '\n\n' + USAGE
|
83 | )
|
84 | }
|
85 | }
|
86 | browsers = browserslist(queries, opts)
|
87 | } catch (e) {
|
88 | if (e.name === 'BrowserslistError') {
|
89 | error(e.message)
|
90 | } else {
|
91 | throw e
|
92 | }
|
93 | }
|
94 |
|
95 | var coverage
|
96 | if (mode === 'browsers') {
|
97 | browsers.forEach(function (browser) {
|
98 | process.stdout.write(browser + '\n')
|
99 | })
|
100 | } else if (areas) {
|
101 | coverage = areas.map(function (area) {
|
102 | var stats
|
103 | if (area !== 'global') {
|
104 | stats = area
|
105 | } else if (opts.stats) {
|
106 | stats = JSON.parse(fs.readFileSync(opts.stats))
|
107 | }
|
108 | var result = browserslist.coverage(browsers, stats)
|
109 | var round = Math.round(result * 100) / 100.0
|
110 |
|
111 | return [area, round]
|
112 | })
|
113 |
|
114 | if (mode === 'coverage') {
|
115 | var prefix = 'These browsers account for '
|
116 | process.stdout.write(prefix)
|
117 | coverage.forEach(function (data, index) {
|
118 | var area = data[0]
|
119 | var round = data[1]
|
120 | var end = 'globally'
|
121 | if (area && area !== 'global') {
|
122 | end = 'in the ' + area.toUpperCase()
|
123 | } else if (opts.stats) {
|
124 | end = 'in custom statistics'
|
125 | }
|
126 |
|
127 | if (index !== 0) {
|
128 | process.stdout.write(prefix.replace(/./g, ' '))
|
129 | }
|
130 |
|
131 | process.stdout.write(round + '% of all users ' + end + '\n')
|
132 | })
|
133 | }
|
134 | }
|
135 |
|
136 | if (mode === 'json') {
|
137 | var data = { browsers: browsers }
|
138 | if (coverage) {
|
139 | data.coverage = coverage.reduce(function (object, j) {
|
140 | object[j[0]] = j[1]
|
141 | return object
|
142 | }, { })
|
143 | }
|
144 | process.stdout.write(JSON.stringify(data, null, ' ') + '\n')
|
145 | }
|
146 | }
|