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
|
const {format} = require('util')
const semver = require('semver')
const checkEngine = (target, npmVer, nodeVer, force = false) => {
const nodev = force ? null : nodeVer
const eng = target.engines
const opt = { includePrerelease: true }
if (!eng) {
return
}
const nodeFail = nodev && eng.node && !semver.satisfies(nodev, eng.node, opt)
const npmFail = npmVer && eng.npm && !semver.satisfies(npmVer, eng.npm, opt)
if (nodeFail || npmFail) {
throw Object.assign(new Error('Unsupported engine'), {
pkgid: target._id,
current: { node: nodeVer, npm: npmVer },
required: eng,
code: 'EBADENGINE'
})
}
}
const checkPlatform = (target, force = false) => {
if (force) {
return
}
const platform = process.platform
const arch = process.arch
const osOk = target.os ? checkList(platform, target.os) : true
const cpuOk = target.cpu ? checkList(arch, target.cpu) : true
if (!osOk || !cpuOk) {
throw Object.assign(new Error('Unsupported platform'), {
pkgid: target._id,
current: {
os: platform,
cpu: arch
},
required: {
os: target.os,
cpu: target.cpu
},
code: 'EBADPLATFORM'
})
}
}
const checkList = (value, list) => {
if (typeof list === 'string') {
list = [list]
}
if (list.length === 1 && list[0] === 'any') {
return true
}
// match none of the negated values, and at least one of the
// non-negated values, if any are present.
let negated = 0
let match = false
for (const entry of list) {
const negate = entry.charAt(0) === '!'
const test = negate ? entry.slice(1) : entry
if (negate) {
negated ++
if (value === test) {
return false
}
} else {
match = match || value === test
}
}
return match || negated === list.length
}
module.exports = {
checkEngine,
checkPlatform
}
|
