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const semver = require('semver')
const currentEnv = require('./current-env')
const { checkDevEngines } = require('./dev-engines')
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, environment = {}) => {
if (force) {
return
}
const os = environment.os || currentEnv.os()
const cpu = environment.cpu || currentEnv.cpu()
const libc = environment.libc || currentEnv.libc(os)
const osOk = target.os ? checkList(os, target.os) : true
const cpuOk = target.cpu ? checkList(cpu, target.cpu) : true
let libcOk = target.libc ? checkList(libc, target.libc) : true
if (target.libc && !libc) {
libcOk = false
}
if (!osOk || !cpuOk || !libcOk) {
throw Object.assign(new Error('Unsupported platform'), {
pkgid: target._id,
current: {
os,
cpu,
libc,
},
required: {
os: target.os,
cpu: target.cpu,
libc: target.libc,
},
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,
checkDevEngines,
currentEnv,
}