fix: remove blob folder in pre-dev (#430)

* fix: remove blob folder in pre-dev

* fix: no need to resolve from package path twice

Co-authored-by: Michal Piechowiak <misiek.piechowiak@gmail.com>

---------

Co-authored-by: Michal Piechowiak <misiek.piechowiak@gmail.com>

Author: mrstork

src/index.ts

@@ -1,3 +1,5 @@
+import { rm } from 'fs/promises'
+
 import type { NetlifyPluginOptions } from '@netlify/build'
 import { trace } from '@opentelemetry/api'
 import { wrapTracer } from '@opentelemetry/api/experimental'
@@ -23,6 +25,15 @@ import {
 
 const tracer = wrapTracer(trace.getTracer('Next.js runtime'))
 
+export const onPreDev = async (options: NetlifyPluginOptions) => {
+  await tracer.withActiveSpan('onPreDev', async () => {
+    const context = new PluginContext(options)
+
+    // Blob files left over from `ntl build` interfere with `ntl dev` when working with regional blobs
+    await rm(context.blobDir, { recursive: true, force: true })
+  })
+}
+
 export const onPreBuild = async (options: NetlifyPluginOptions) => {
   await tracer.withActiveSpan('onPreBuild', async () => {
     // Enable Next.js standalone mode at build time