testing out static file copying

Author: mrstork

adapters-notes.md

@@ -30,3 +30,5 @@
 - Can we export build time otel spans from adapter similarly how we do that now in a build plugin?
 - Expose some constants from build plugin to adapter - what's best way to do that? (things like
   packagePath, publishDir etc)
+- Looking forward - Platform change to accept a list of files to upload to cdn (avoids file system
+  operations such as `cp`)

src/adapter/adapter.ts

@@ -8,6 +8,7 @@ import {
   modifyConfig as modifyConfigForImageCDN,
   onBuildComplete as onBuildCompleteForImageCDN,
 } from './image-cdn.js'
+import { onBuildComplete as onBuildCompleteForStaticFiles } from './static.js'
 import { FrameworksAPIConfig } from './types.js'
 
 const NETLIFY_FRAMEWORKS_API_CONFIG_PATH = '.netlify/v1/config.json'
@@ -30,6 +31,10 @@ const adapter: NextAdapter = {
     let frameworksAPIConfig: FrameworksAPIConfig = null
 
     frameworksAPIConfig = onBuildCompleteForImageCDN(nextAdapterContext, frameworksAPIConfig)
+    frameworksAPIConfig = await onBuildCompleteForStaticFiles(
+      nextAdapterContext,
+      frameworksAPIConfig,
+    )
     frameworksAPIConfig = onBuildCompleteForHeaders(nextAdapterContext, frameworksAPIConfig)
 
     if (frameworksAPIConfig) {

src/adapter/static.ts

@@ -0,0 +1,23 @@
+import { cp } from 'node:fs/promises'
+import { join } from 'node:path/posix'
+
+import type { FrameworksAPIConfig, OnBuildCompleteContext } from './types.js'
+
+export async function onBuildComplete(
+  ctx: OnBuildCompleteContext,
+  frameworksAPIConfigArg: FrameworksAPIConfig,
+) {
+  const frameworksAPIConfig: FrameworksAPIConfig = frameworksAPIConfigArg ?? {}
+
+  for (const staticFile of ctx.outputs.staticFiles) {
+    try {
+      await cp(staticFile.filePath, join('./.netlify/static', staticFile.pathname), {
+        recursive: true,
+      })
+    } catch (error) {
+      throw new Error(`Failed copying static assets`, { cause: error })
+    }
+  }
+
+  return frameworksAPIConfig
+}

src/index.ts

@@ -8,7 +8,6 @@ import { wrapTracer } from '@opentelemetry/api/experimental'
 import { restoreBuildCache, saveBuildCache } from './build/cache.js'
 import { copyPrerenderedContent } from './build/content/prerendered.js'
 import {
-  copyStaticAssets,
   copyStaticContent,
   copyStaticExport,
   publishStaticDir,
@@ -94,7 +93,6 @@ export const onBuild = async (options: NetlifyPluginOptions) => {
     await verifyNetlifyFormsWorkaround(ctx)
 
     await Promise.all([
-      copyStaticAssets(ctx), // this
       copyStaticContent(ctx), // this
       copyPrerenderedContent(ctx), // maybe this
       createServerHandler(ctx), // not this while we use standalone