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'use strict'
var validate = require('aproba')
var moduleName = require('../utils/module-name.js')
module.exports = flattenTree
module.exports.flatName = flatName
module.exports.flatNameFromTree = flatNameFromTree
function flattenTree (tree) {
validate('O', arguments)
var seen = new Set()
var flat = {}
var todo = [[tree, '/']]
while (todo.length) {
var next = todo.shift()
var pkg = next[0]
seen.add(pkg)
var path = next[1]
flat[path] = pkg
if (path !== '/') path += '/'
for (var ii = 0; ii < pkg.children.length; ++ii) {
var child = pkg.children[ii]
if (!seen.has(child)) {
todo.push([child, flatName(path, child)])
}
}
}
return flat
}
function flatName (path, child) {
validate('SO', arguments)
return path + (moduleName(child) || 'TOP')
}
function flatNameFromTree (tree) {
validate('O', arguments)
if (tree.isTop) return '/'
var path = flatNameFromTree(tree.parent)
if (path !== '/') path += '/'
return flatName(path, tree)
}