fix: pnpm config get <key> -g returns empty when the value is a boolean (#6360)

.changeset/little-badgers-sort.md

@@ -0,0 +1,5 @@
+---
+"@pnpm/plugin-commands-config": patch
+---
+
+`pnpm config get <key>` returns empty when the value is a boolean

config/plugin-commands-config/src/configGet.ts

@@ -1,5 +1,6 @@
 import { type ConfigCommandOptions } from './ConfigCommandOptions'
 
 export function configGet (opts: ConfigCommandOptions, key: string) {
-  return opts.rawConfig[key]
+  const config = opts.rawConfig[key]
+  return typeof config === 'boolean' ? config.toString() : config
 }

config/plugin-commands-config/test/configGet.test.ts

@@ -13,3 +13,17 @@ test('config get', async () => {
 
   expect(configKey).toEqual('~/store')
 })
+
+test('config get a boolean should return string format', async () => {
+  const configKey = await config.handler({
+    dir: process.cwd(),
+    cliOptions: {},
+    configDir: process.cwd(),
+    global: true,
+    rawConfig: {
+      'update-notifier': true,
+    },
+  }, ['get', 'update-notifier'])
+
+  expect(configKey).toEqual('true')
+})