fix: summary reporting (#5031)

.changeset/lemon-numbers-hug.md

@@ -0,0 +1,6 @@
+---
+"@pnpm/default-reporter": patch
+"pnpm": patch
+---
+
+Do not print a package with unchanged version in the installation summary.

packages/default-reporter/package.json

@@ -11,7 +11,6 @@
   "scripts": {
     "start": "tsc --watch",
     "lint": "eslint src/**/*.ts test/**/*.ts",
-    "pretty-test": "ts-node test | tap-diff",
     "just-test-preview": "ts-node test --type-check",
     "_test": "jest",
     "test": "pnpm run compile && pnpm run _test",

packages/default-reporter/src/reporterForClient/pkgsDiff.ts

@@ -56,26 +56,33 @@ export default function (
     scan((pkgsDiff, args) => {
       const rootLog = args[0]
       const deprecationSet = args[1] as Set<string>
+      let action: '-' | '+' | undefined
+      let log!: any // eslint-disable-line
       if (rootLog['added']) {
-        pkgsDiff[rootLog['added'].dependencyType || 'nodeModulesOnly'][`+${rootLog['added'].name as string}`] = {
-          added: true,
-          deprecated: deprecationSet.has(rootLog['added'].id),
-          from: rootLog['added'].linkedFrom,
-          latest: rootLog['added'].latest,
-          name: rootLog['added'].name,
-          realName: rootLog['added'].realName,
-          version: rootLog['added'].version,
-        }
+        action = '+'
+        log = rootLog['added']
+      } else if (rootLog['removed']) {
+        action = '-'
+        log = rootLog['removed']
+      } else {
         return pkgsDiff
       }
-      if (rootLog['removed']) {
-        pkgsDiff[rootLog['removed'].dependencyType || 'nodeModulesOnly'][`-${rootLog['removed'].name as string}`] = {
-          added: false,
-          name: rootLog['removed'].name,
-          version: rootLog['removed'].version,
-        }
+      const depType = log.dependencyType || 'nodeModulesOnly'
+      const oppositeKey = `${action === '-' ? '+' : '-'}${log.name as string}`
+      const previous = pkgsDiff[depType][oppositeKey]
+      if (previous && previous.version === log.version) {
+        delete pkgsDiff[depType][oppositeKey]
         return pkgsDiff
       }
+      pkgsDiff[depType][`${action}${log.name as string}`] = {
+        added: action === '+',
+        deprecated: deprecationSet.has(log.id),
+        from: log.linkedFrom,
+        latest: log.latest,
+        name: log.name,
+        realName: log.realName,
+        version: log.version,
+      }
       return pkgsDiff
     }, {
       dev: {},

packages/default-reporter/test/index.ts

@@ -34,7 +34,7 @@ const h1 = chalk.cyanBright
 
 const EOL = '\n'
 
-test('prints summary (of current package only)', (done) => {
+test.only('prints summary (of current package only)', (done) => {
   const prefix = '/home/jane/project'
   const output$ = toOutput$({
     context: {
@@ -98,6 +98,24 @@ test('prints summary (of current package only)', (done) => {
       version: '0.1.0',
     },
   })
+  rootLogger.debug({
+    prefix,
+    removed: {
+      dependencyType: 'prod',
+      name: 'no-changes',
+      version: '1.0.0',
+    },
+  })
+  rootLogger.debug({
+    added: {
+      dependencyType: 'prod',
+      id: 'registry.npmjs.org/no-changes/2.0.0',
+      name: 'no-changes',
+      realName: 'no-changes',
+      version: '1.0.0',
+    },
+    prefix,
+  })
   rootLogger.debug({
     added: {
       dependencyType: 'dev',