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'use strict'
var validate = require('aproba')
var asyncMap = require('slide').asyncMap
var chain = require('slide').chain
var npmInstallChecks = require('npm-install-checks')
var iferr = require('iferr')
var checkEngine = npmInstallChecks.checkEngine
var checkPlatform = npmInstallChecks.checkPlatform
var npm = require('../npm.js')
module.exports = function (idealTree, args, next) {
validate('OAF', arguments)
var force = npm.config.get('force')
asyncMap(args, function (pkg, done) {
chain([
[checkSelf, idealTree, pkg, force],
[isInstallable, pkg]
], done)
}, next)
}
function getWarnings (pkg) {
while (pkg.parent) pkg = pkg.parent
if (!pkg.warnings) pkg.warnings = []
return pkg.warnings
}
var isInstallable = module.exports.isInstallable = function (pkg, next) {
var force = npm.config.get('force')
var nodeVersion = npm.config.get('node-version')
if (/-/.test(nodeVersion)) {
// for the purposes of validation, if the node version is a prerelease,
// strip that. We check and warn about this sceanrio over in validate-tree.
nodeVersion = nodeVersion.replace(/-.*/, '')
}
var strict = npm.config.get('engine-strict')
checkEngine(pkg, npm.version, nodeVersion, force, strict, iferr(next, thenWarnEngineIssues))
function thenWarnEngineIssues (warn) {
if (warn) getWarnings(pkg).push(warn)
checkPlatform(pkg, force, next)
}
}
function checkSelf (idealTree, pkg, force, next) {
if (idealTree.package && idealTree.package.name !== pkg.name) return next()
if (force) {
var warn = new Error("Wouldn't install " + pkg.name + ' as a dependency of itself, but being forced')
warn.code = 'ENOSELF'
idealTree.warnings.push(warn)
next()
} else {
var er = new Error('Refusing to install ' + pkg.name + ' as a dependency of itself')
er.code = 'ENOSELF'
next(er)
}
}