feat(core): pruneLockfileImporters is true by default

.changeset/giant-forks-trade.md

@@ -0,0 +1,5 @@
+---
+"@pnpm/core": major
+---
+
+pruneLockfileImporters is true by default.

packages/core/src/install/extendInstallOptions.ts

@@ -141,7 +141,7 @@ const defaults = async (opts: InstallOptions) => {
     preferFrozenLockfile: true,
     preferWorkspacePackages: false,
     preserveWorkspaceProtocol: true,
-    pruneLockfileImporters: false,
+    pruneLockfileImporters: true,
     pruneStore: false,
     rawConfig: {},
     registries: DEFAULT_REGISTRIES,

packages/core/test/install/multipleImporters.ts

@@ -249,6 +249,7 @@ test('dependencies of other importers are not pruned when installing for a subse
     dir: path.resolve('project-1'),
     lockfileDir: process.cwd(),
     modulesCacheMaxAge: 0,
+    pruneLockfileImporters: false,
   }))
 
   await projects['project-1'].has('is-positive')
@@ -313,10 +314,12 @@ test('dependencies of other importers are not pruned when (headless) installing
     dir: path.resolve('project-1'),
     lockfileDir: process.cwd(),
     lockfileOnly: true,
+    pruneLockfileImporters: false,
   }))
   await mutateModules(importers.slice(0, 1), await testDefaults({
     frozenLockfile: true,
     modulesCacheMaxAge: 0,
+    pruneLockfileImporters: false,
   }))
 
   await projects['project-1'].has('is-positive')

packages/core/test/lockfile.ts

@@ -842,7 +842,12 @@ test('lockfile file has correct format when lockfile directory does not equal th
 
   process.chdir('project-2')
 
-  await addDependenciesToPackage(manifest, ['is-positive'], await testDefaults({ save: true, lockfileDir: path.resolve('..'), storeDir }))
+  await addDependenciesToPackage(manifest, ['is-positive'], await testDefaults({
+    save: true,
+    lockfileDir: path.resolve('..'),
+    storeDir,
+    pruneLockfileImporters: false,
+  }))
 
   {
     const lockfile = await readYamlFile<Lockfile>(path.join('..', WANTED_LOCKFILE))

packages/core/test/uninstall.ts

@@ -317,6 +317,7 @@ test('uninstalling a dependency from package that uses shared lockfile', async (
   ], await testDefaults({
     lockfileDir: process.cwd(),
     store,
+    pruneLockfileImporters: false,
   }))
 
   await projects['project-1'].hasNot('is-positive')