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'use strict'
var path = require('path')
var moduleName = require('../utils/module-name.js')
module.exports = reportOptionalFailure
function top (tree) {
if (tree.parent) return top(tree.parent)
return tree
}
function reportOptionalFailure (tree, what, error) {
var topTree = top(tree)
if (!topTree.warnings) topTree.warnings = []
var id
if (what) {
var depVer = tree.package.dependencies && tree.package.dependencies[what]
var optDepVer = tree.package.optionalDependencies && tree.package.optionalDependencies[what]
var devDepVer = tree.package.devDependencies && tree.package.devDependencies[what]
var version = depVer || optDepVer || devDepVer
id = what + (version ? '@' + version : '')
} else {
id = tree._id || moduleName(tree) + (tree.package.version ? '@' + tree.package.version : '')
}
var location = path.relative(topTree.path, tree.path)
if (what) location = path.join(location, 'node_modules', what)
error.optional = id
error.location = location
topTree.warnings.push(error)
}