feat: add package count summary to pnpm list tree output

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

reviewing/list/src/index.ts

@@ -117,6 +117,7 @@ export async function listForPackages (
     modulesDir?: string
     virtualStoreDirMaxLength: number
     finders?: Finder[]
+    showSummary?: boolean
   }
 ): Promise<string> {
   const opts = { ...DEFAULTS, ...maybeOpts }
@@ -130,6 +131,7 @@ export async function listForPackages (
     long: opts.long,
     search: Boolean(packages.length),
     showExtraneous: opts.showExtraneous,
+    showSummary: opts.showSummary,
   })
 }
 
@@ -150,6 +152,7 @@ export async function list (
     modulesDir?: string
     virtualStoreDirMaxLength: number
     finders?: Finder[]
+    showSummary?: boolean
   }
 ): Promise<string> {
   const opts = { ...DEFAULTS, ...maybeOpts }
@@ -193,6 +196,7 @@ export async function list (
     long: opts.long,
     search: false,
     showExtraneous: opts.showExtraneous,
+    showSummary: opts.showSummary,
   })
 }
 
@@ -202,6 +206,7 @@ type Printer = (packages: PackageDependencyHierarchy[], opts: {
   long: boolean
   search: boolean
   showExtraneous: boolean
+  showSummary?: boolean
 }) => Promise<string>
 
 function getPrinter (reportAs: 'parseable' | 'tree' | 'json'): Printer {

reviewing/list/src/renderTree.ts

@@ -21,6 +21,7 @@ export interface RenderTreeOptions {
   long: boolean
   search: boolean
   showExtraneous: boolean
+  showSummary?: boolean
 }
 
 export async function renderTree (
@@ -33,7 +34,9 @@ export async function renderTree (
   )
     .filter(Boolean)
     .join('\n\n')
-  return `${(opts.depth > -1 && output ? LEGEND : '')}${output}`
+  const legend = opts.depth > -1 && output ? LEGEND : ''
+  const summary = opts.showSummary && opts.depth > -1 && output ? `\n\n${listSummary(packages)}` : ''
+  return `${legend}${output}${summary}`
 }
 
 async function renderTreeForPackage (
@@ -206,3 +209,30 @@ function findMultiPeerPackages (packages: PackageDependencyHierarchy[]): Map<str
 
   return filterMultiPeerEntries(hashesPerPkg)
 }
+
+function listSummary (packages: PackageDependencyHierarchy[]): string {
+  let total = 0
+
+  function walk (nodes: PackageNode[]): void {
+    for (const node of nodes) {
+      total++
+      if (node.dependencies) {
+        walk(node.dependencies)
+      }
+    }
+  }
+
+  for (const pkg of packages) {
+    for (const field of DEPENDENCIES_FIELDS) {
+      if (pkg[field]) {
+        walk(pkg[field])
+      }
+    }
+  }
+
+  const parts: string[] = [`${total} package${total === 1 ? '' : 's'}`]
+  if (packages.length > 1) {
+    parts.push(`${packages.length} projects`)
+  }
+  return chalk.dim(parts.join(' in '))
+}

reviewing/plugin-commands-listing/src/list.ts

@@ -214,6 +214,7 @@ export async function render (
     onlyProjects: opts.onlyProjects,
     reportAs: (opts.parseable ? 'parseable' : (opts.json ? 'json' : 'tree')) as ('parseable' | 'json' | 'tree'),
     showExtraneous: false,
+    showSummary: true,
     modulesDir: opts.modulesDir,
     virtualStoreDirMaxLength: opts.virtualStoreDirMaxLength,
     finders,