21   addDep (dep) {  argument
22     this.dependencies.set(dep.name, dep)
23     dep.requiredBy.add(this)
27   delDep (dep) {  argument
28     this.dependencies.delete(dep.name)
29     dep.requiredBy.delete(this)
57     for (let dep of this.dependencies.values()) {
58       if (_seen.has(dep)) { continue }
59       _seen.add(dep)
60       if (dep === _from || dep.hasCycle(_seen, _from)) {
78           dep => dep.forEachAsync(fn, opts, _pending),
92       for (let dep of this.dependencies.values()) {
93         dep.forEach(fn, _seen)
108     let dep = allDeps.get(name)
109     if (!dep) {
111       dep = makeNode(name, name, depNode)
113     addChild(dep, tree, allDeps, pkgLock)
123 function addChild (dep, tree, allDeps, pkgLock) {  argument
124   tree.addDep(dep)
125   allDeps.set(dep.address, dep)
126   const addr = dep.address
133       addChild(tdep, dep, allDeps, pkgLock)
135       dep.addDep(tdep)