135   readInstalled_(folder, null, null, null, 0, opts, function (er, obj) {  argument
139     resolveInheritance(obj, opts)
140     obj.root = true
141     unmarkExtraneous(obj, opts)
142     cb(null, obj)
148     , obj
161     obj = copy(data)
164       obj = obj || true
191     debug('next', installed, obj && typeof obj, name, real)
192     if (!installed || !obj || !real || called) return
195     if (obj === true) {
196       obj = {dependencies:{}, path:folder}  variable
197       installed.forEach(function (i) { obj.dependencies[i] = ANY })
199     if (name && obj.name !== name) obj.invalid = true
200     obj.realName = name || obj.name
201     obj.dependencies = obj.dependencies || {}
204     obj._dependencies = copy(obj.dependencies)
211       reqver = obj.version;
217         && !semver.satisfies(obj.version, reqver, true)) {
218       obj.invalid = true  field
225     obj.extraneous = true
227     obj.path = obj.path || folder
228     obj.realPath = real
229     obj.link = link
230     if (parent && !obj.link) obj.parent = parent
231     realpathSeen[real] = obj
232     obj.depth = depth
235       var rv = obj.dependencies[pkg]
236       if (!rv && obj.devDependencies && opts.dev)
237         rv = obj.devDependencies[pkg]
240         obj.dependencies = {}
241         return cb(null, obj)
245                     , obj, pkg, obj.dependencies[pkg], depth + 1, opts
251         obj.dependencies[dep.realName] = dep
256       if (obj.optionalDependencies) {
257         Object.keys(obj.optionalDependencies).forEach(function (dep) {
258           if (typeof obj.dependencies[dep] === "string") {
259             delete obj.dependencies[dep]
263       return cb(null, obj)
270 function resolveInheritance (obj, opts) {  argument
271   if (typeof obj !== "object") return
272   if (riSeen.indexOf(obj) !== -1) return
273   riSeen.push(obj)
274   if (typeof obj.dependencies !== "object") {
275     obj.dependencies = {}
277   Object.keys(obj.dependencies).forEach(function (dep) {
278     findUnmet(obj.dependencies[dep], opts)
280   Object.keys(obj.dependencies).forEach(function (dep) {
281     if (typeof obj.dependencies[dep] === "object") {
282       resolveInheritance(obj.dependencies[dep], opts)
284       debug("unmet dep! %s %s@%s", obj.name, dep, obj.dependencies[dep])
287   findUnmet(obj, opts)
292 function findUnmet (obj, opts) {  argument
294   if (findUnmetSeen.indexOf(obj) !== -1) return
295   findUnmetSeen.push(obj)
296   debug("find unmet parent=%s obj=", obj.parent && obj.parent.name, obj.name || obj)
297   var deps = obj.dependencies = obj.dependencies || {}
303       var found = findDep(obj, d)
312                 , obj.path + " requires "+d+"@'"+deps[d]
322   var peerDeps = obj.peerDependencies = obj.peerDependencies || {}
326     if (!obj.parent) {
327       dependency = obj.dependencies[d]
331         obj.dependencies[d] = peerDeps[d]
334       var r = obj.parent
343       obj.dependencies[d] = peerDeps[d]
349   return obj
352 function unmarkExtraneous (obj, opts) {  argument
358   obj.extraneous = false
360   var deps = obj._dependencies || []
361   if (opts.dev && obj.devDependencies && (obj.root || obj.link)) {
362     Object.keys(obj.devDependencies).forEach(function (k) {
363       deps[k] = obj.devDependencies[k]
367   if (obj.peerDependencies) {
368     Object.keys(obj.peerDependencies).forEach(function (k) {
369       deps[k] = obj.peerDependencies[k]
373   debug("not extraneous", obj._id, deps)
375     var dep = findDep(obj, d)
384 function findDep (obj, d) {  argument
385   var r = obj
400 function copy (obj) {  argument
401   if (!obj || typeof obj !== 'object') return obj
402   if (Array.isArray(obj)) return obj.map(copy)
405   for (var i in obj) o[i] = copy(obj[i])