feat: print a summary about deprecated subdeps

close #6707

cli/default-reporter/src/reporterForClient/index.ts

@@ -115,7 +115,10 @@ export function reporterForClient (
   if (logLevelNumber >= LOG_LEVEL_NUMBER.warn) {
     outputs.push(
       reportPeerDependencyIssues(log$),
-      reportDeprecations(log$.deprecation, { cwd, isRecursive: opts.isRecursive }),
+      reportDeprecations({
+        deprecation: log$.deprecation,
+        stage: log$.stage,
+      }, { cwd, isRecursive: opts.isRecursive }),
       reportRequestRetry(log$.requestRetry)
     )
   }

cli/default-reporter/src/reporterForClient/reportDeprecations.ts

@@ -1,27 +1,47 @@
-import { type DeprecationLog } from '@pnpm/core-loggers'
+import { type DeprecationLog, type StageLog } from '@pnpm/core-loggers'
 import * as Rx from 'rxjs'
-import { map } from 'rxjs/operators'
+import { map, filter, buffer, switchMap } from 'rxjs/operators'
 import chalk from 'chalk'
 import { formatWarn } from './utils/formatWarn'
 import { zoomOut } from './utils/zooming'
 
 export function reportDeprecations (
-  deprecation$: Rx.Observable<DeprecationLog>,
+  log$: {
+    deprecation: Rx.Observable<DeprecationLog>
+    stage: Rx.Observable<StageLog>
+  },
   opts: {
     cwd: string
     isRecursive: boolean
   }
 ) {
-  return deprecation$.pipe(
-    map((log) => {
-      if (!opts.isRecursive && log.prefix === opts.cwd) {
+  const [deprecatedDirectDeps$, deprecatedSubdeps$] = Rx.partition(log$.deprecation, (log) => log.depth === 0)
+  const resolutionDone$ = log$.stage.pipe(
+    filter((log) => log.stage === 'resolution_done')
+  )
+  return Rx.merge(
+    deprecatedDirectDeps$.pipe(
+      map((log) => {
+        if (!opts.isRecursive && log.prefix === opts.cwd) {
+          return Rx.of({
+            msg: formatWarn(`${chalk.red('deprecated')} ${log.pkgName}@${log.pkgVersion}: ${log.deprecated}`),
+          })
+        }
         return Rx.of({
-          msg: formatWarn(`${chalk.red('deprecated')} ${log.pkgName}@${log.pkgVersion}: ${log.deprecated}`),
+          msg: zoomOut(opts.cwd, log.prefix, formatWarn(`${chalk.red('deprecated')} ${log.pkgName}@${log.pkgVersion}`)),
         })
-      }
-      return Rx.of({
-        msg: zoomOut(opts.cwd, log.prefix, formatWarn(`${chalk.red('deprecated')} ${log.pkgName}@${log.pkgVersion}`)),
       })
-    })
+    ),
+    deprecatedSubdeps$.pipe(
+      buffer(resolutionDone$),
+      switchMap(deprecatedSubdeps => {
+        if (deprecatedSubdeps.length > 0) {
+          return Rx.of(Rx.of({
+            msg: `${chalk.red('deprecated subdeps')}: ${deprecatedSubdeps.map(log => `${log.pkgName}@${log.pkgVersion}`).join(', ')}`,
+          }))
+        }
+        return Rx.EMPTY
+      })
+    )
   )
 }