forked from qgustavor/mega
-
Notifications
You must be signed in to change notification settings - Fork 0
/
build.js
192 lines (175 loc) · 5.57 KB
/
build.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
const rollup = require('rollup')
const babel = require('rollup-plugin-babel')
const builtins = require('rollup-plugin-node-builtins')
const commonjs = require('rollup-plugin-commonjs')
const globals = require('rollup-plugin-node-globals')
const json = require('rollup-plugin-json')
const nodeResolve = require('rollup-plugin-node-resolve')
const replace = require('rollup-plugin-replace')
const babelTransform = require('@babel/core').transform
const fs = require('fs')
// to aid debugging
const sourceMapEnabled = process.argv.includes('--generate-sourcemap')
const formatFilters = process.argv.filter(e => e.startsWith('--only=')).map(e => e.substr(7))
const formats = [{
// to be loaded with <script>
name: 'browser-umd',
bundleExternals: true,
bundlePolyfills: true,
minifyResult: true,
entryPoint: 'lib/mega.js',
bundleConfig: { format: 'umd', name: 'mega' },
targets: { browsers: 'defaults' }
}, {
// to be loaded with ES Module compatible loader
name: 'browser-es',
bundleExternals: true,
bundlePolyfills: true,
minifyResult: true,
entryPoint: 'lib/mega-es.js',
bundleConfig: { format: 'es' },
targets: {
// Only browsers that support <script type="module"> are supported because
// usually when ES modules are loaded in older browsers a transpiler is used.
// Data from https://caniuse.com/#feat=es6-module
browsers: [
'Edge >= 16',
'Firefox >= 60',
'Chrome >= 64',
'Safari >= 11'
]
}
}, {
// to allow the old commonjs usage
name: 'node-cjs',
bundleExternals: false,
bundlePolyfills: false,
minifyResult: false,
entryPoint: 'lib/mega.js',
bundleConfig: { format: 'cjs' },
targets: { node: 6 }
}, {
// to be loaded with ES Module compatible loader
name: 'node-es',
bundleExternals: false,
bundlePolyfills: false,
minifyResult: false,
entryPoint: 'lib/mega-es.js',
bundleConfig: { format: 'es' },
targets: { node: 6 }
}]
const warnings = []
const handleWarning = (warning) => {
// https://github.com/calvinmetcalf/rollup-plugin-node-builtins/issues/39#issuecomment-378276979
if (warning.code === 'CIRCULAR_DEPENDENCY') return
warnings.push(warning)
}
const doBundle = (format) => {
const externalConfig = format.bundleExternals ? [] : [
'zlib', 'https', 'http', 'crypto', 'fs', 'tls',
'net', 'string_decoder', 'assert', 'punycode',
'dns', 'dgram', 'request', 'combined-stream',
'url', 'through', 'stream-combiner', 'events',
'secure-random', 'querystring', 'stream',
'stream-skip'
]
return rollup.rollup({
input: format.entryPoint,
external: externalConfig,
onwarn: handleWarning,
plugins: [
format.bundlePolyfills && replace({
values: {
"from 'request'": "from '../browser/request.js'",
"from './crypto/rsa'": "from '../browser/rsa.js'",
"from './aes'": "from '../../browser/aes.js'"
},
delimiters: ['', '']
}),
commonjs(),
format.bundleExternals && builtins(),
format.bundleExternals && globals(),
replace({ values: {
'process.env.IS_BROWSER_BUILD': '' + format.name.includes('browser')
}}),
format.bundleExternals && nodeResolve({
jsnext: true,
main: true,
browser: true
}),
json(),
babel({
exclude: 'node_modules/**',
// .babelrc is used only on tests
babelrc: false,
presets: [
['@babel/preset-env', {
modules: false,
targets: format.targets
}]
]
})
]
}).then((bundle) => {
const options = format.bundleConfig
return bundle.generate(Object.assign({
sourcemap: sourceMapEnabled && 'inline'
}, options))
}).then((result) => {
const options = format.bundleConfig
if (format.minifyResult) {
// Minify using babel-minify
result.code = babelTransform(result.code, {
// Keep pure annotations on ES modules
shouldPrintComment: options.format === 'es' ? comment => {
return comment === '#__PURE__'
} : undefined,
babelrc: false,
presets: [['minify', {
mangle: {
// Usually minifiers don't minify top level because it's the global scope on browsers
// But it don't applies to ES6 modules
topLevel: options.format === 'es'
}
}]]
}).code
}
return writeFilePromise('dist/main.' + format.name + '.js', result.code)
})
}
function doBuild () {
console.error('Starting build...')
console.error('Building 0 of %d', formats.length)
return formats.reduce((last, format, index) => last.then(() => {
// Filter formats if --only=format arguments were used
if (formatFilters.length > 0 && !formatFilters.includes(format.name)) return
// return the previous line (A), then to the first character (G), clean the line (2K) and print state
console.log('\x1b[A\x1b[G\x1b[2KBuilding %d of %d: %s', index + 1, formats.length, format.name)
return doBundle(format)
}), Promise.resolve())
}
function afterBuilding () {
if (warnings.length) {
console.log('Build completed with warnings')
console.log(Array.from(new Set(warnings)).join('\n'))
process.exit(1)
}
console.log('Build completed with success')
}
function handleBuildErrors (error) {
console.error(error.stack || error)
process.exit(1)
}
function writeFilePromise (...argv) {
return new Promise((resolve, reject) => {
fs.writeFile(...argv, (err) => {
if (err) {
reject(err)
} else {
resolve()
}
})
})
}
// Init build
doBuild().then(afterBuilding).catch(handleBuildErrors)