source: trip-planner-front/node_modules/npm-install-checks/index.js@ 76712b2

Last change on this file since 76712b2 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 1.9 KB
Line 
1const {format} = require('util')
2const semver = require('semver')
3
4const checkEngine = (target, npmVer, nodeVer, force = false) => {
5 const nodev = force ? null : nodeVer
6 const eng = target.engines
7 const opt = { includePrerelease: true }
8 if (!eng) {
9 return
10 }
11
12 const nodeFail = nodev && eng.node && !semver.satisfies(nodev, eng.node, opt)
13 const npmFail = npmVer && eng.npm && !semver.satisfies(npmVer, eng.npm, opt)
14 if (nodeFail || npmFail) {
15 throw Object.assign(new Error('Unsupported engine'), {
16 pkgid: target._id,
17 current: { node: nodeVer, npm: npmVer },
18 required: eng,
19 code: 'EBADENGINE'
20 })
21 }
22}
23
24const checkPlatform = (target, force = false) => {
25 if (force) {
26 return
27 }
28
29 const platform = process.platform
30 const arch = process.arch
31 const osOk = target.os ? checkList(platform, target.os) : true
32 const cpuOk = target.cpu ? checkList(arch, target.cpu) : true
33
34 if (!osOk || !cpuOk) {
35 throw Object.assign(new Error('Unsupported platform'), {
36 pkgid: target._id,
37 current: {
38 os: platform,
39 cpu: arch
40 },
41 required: {
42 os: target.os,
43 cpu: target.cpu
44 },
45 code: 'EBADPLATFORM'
46 })
47 }
48}
49
50const checkList = (value, list) => {
51 if (typeof list === 'string') {
52 list = [list]
53 }
54 if (list.length === 1 && list[0] === 'any') {
55 return true
56 }
57 // match none of the negated values, and at least one of the
58 // non-negated values, if any are present.
59 let negated = 0
60 let match = false
61 for (const entry of list) {
62 const negate = entry.charAt(0) === '!'
63 const test = negate ? entry.slice(1) : entry
64 if (negate) {
65 negated ++
66 if (value === test) {
67 return false
68 }
69 } else {
70 match = match || value === test
71 }
72 }
73 return match || negated === list.length
74}
75
76module.exports = {
77 checkEngine,
78 checkPlatform
79}
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