Run pnpm store prune post action

src/pnpm-store-prune/index.ts

@@ -0,0 +1,27 @@
+import { spawnSync } from 'child_process'
+import { setFailed } from '@actions/core'
+import { Inputs } from '../inputs'
+
+export function pruneStore(inputs: Inputs) {
+  if (inputs.runInstall.length === 0) {
+    console.log('Pruning is unnecessary.')
+    return
+  }
+
+  console.log('Running pnpm store prune')
+  const { error, status } = spawnSync('pnpm', ['store', 'prune'], {
+    stdio: 'inherit',
+  })
+
+  if (error) {
+    setFailed(error)
+    return
+  }
+
+  if (status) {
+    setFailed(`command pnpm store prune exits with code ${status}`)
+    return
+  }
+}
+
+export default pruneStore