codekingpro/portable-devtools

1const semver = require('semver')
2const currentEnv = require('./current-env')
3const { checkDevEngines } = require('./dev-engines')
4
5const checkEngine = (target, npmVer, nodeVer, force = false) => {
6  const nodev = force ? null : nodeVer
7  const eng = target.engines
8  const opt = { includePrerelease: true }
9  if (!eng) {
10    return
11  }
12
13  const nodeFail = nodev && eng.node && !semver.satisfies(nodev, eng.node, opt)
14  const npmFail = npmVer && eng.npm && !semver.satisfies(npmVer, eng.npm, opt)
15  if (nodeFail || npmFail) {
16    throw Object.assign(new Error('Unsupported engine'), {
17      pkgid: target._id,
18      current: { node: nodeVer, npm: npmVer },
19      required: eng,
20      code: 'EBADENGINE',
21    })
22  }
23}
24
25const checkPlatform = (target, force = false, environment = {}) => {
26  if (force) {
27    return
28  }
29
30  const os = environment.os || currentEnv.os()
31  const cpu = environment.cpu || currentEnv.cpu()
32  const libc = environment.libc || currentEnv.libc(os)
33
34  const osOk = target.os ? checkList(os, target.os) : true
35  const cpuOk = target.cpu ? checkList(cpu, target.cpu) : true
36  let libcOk = target.libc ? checkList(libc, target.libc) : true
37  if (target.libc && !libc) {
38    libcOk = false
39  }
40
41  if (!osOk || !cpuOk || !libcOk) {
42    throw Object.assign(new Error('Unsupported platform'), {
43      pkgid: target._id,
44      current: {
45        os,
46        cpu,
47        libc,
48      },
49      required: {
50        os: target.os,
51        cpu: target.cpu,
52        libc: target.libc,
53      },
54      code: 'EBADPLATFORM',
55    })
56  }
57}
58
59const checkList = (value, list) => {
60  if (typeof list === 'string') {
61    list = [list]
62  }
63  if (list.length === 1 && list[0] === 'any') {
64    return true
65  }
66  // match none of the negated values, and at least one of the
67  // non-negated values, if any are present.
68  let negated = 0
69  let match = false
70  for (const entry of list) {
71    const negate = entry.charAt(0) === '!'
72    const test = negate ? entry.slice(1) : entry
73    if (negate) {
74      negated++
75      if (value === test) {
76        return false
77      }
78    } else {
79      match = match || value === test
80    }
81  }
82  return match || negated === list.length
83}
84
85module.exports = {
86  checkEngine,
87  checkPlatform,
88  checkDevEngines,
89  currentEnv,
90}
91