feat: hide modified config in temp dir

Author: orinokai

src/helpers/config.ts

@@ -1,18 +1,25 @@
+import { readFileSync } from 'fs'
+
 import type { NetlifyConfig } from '@netlify/build'
 import { copySync, moveSync } from 'fs-extra/esm'
 
-import { __dirname, NETLIFY_PUBLISH_DIR } from './constants.js'
+import { __dirname, NETLIFY_PUBLISH_DIR, NETLIFY_TEMP_DIR } from './constants.js'
 
 /**
  * Modify the user's next.config.js to use standalone mode
  */
 export const modifyNextConfig = () => {
-  moveSync('next.config.js', 'next.config.js.orig')
+  // revert any previous changes
+  revertNextConfig()
+
+  moveSync('next.config.js', `${NETLIFY_TEMP_DIR}/next.config.js`)
   copySync(`${__dirname}/../templates/next.config.cjs`, 'next.config.js')
 }
 
 export const revertNextConfig = () => {
-  moveSync('next.config.js.orig', 'next.config.js', { overwrite: true })
+  if (readFileSync('next.config.js').includes('Netlify generated code')) {
+    moveSync(`${NETLIFY_TEMP_DIR}/next.config.js`, 'next.config.js', { overwrite: true })
+  }
 }
 
 /**

src/helpers/constants.ts

@@ -3,6 +3,7 @@ import { fileURLToPath } from 'node:url'
 export const __dirname = fileURLToPath(new URL('.', import.meta.url))
 
 export const NETLIFY_PUBLISH_DIR = '.netlify/publish'
+export const NETLIFY_TEMP_DIR = '.netlify/temp'
 
 export const FUNCTIONS_INTERNAL_DIR = '.netlify/functions-internal'
 export const FUNCTIONS_URL = '/.netlify/functions'