feat: add watch-ignore flag

src/commands/dev/dev.ts

@@ -319,6 +319,7 @@ export const dev = async (options: OptionValues, command: BaseCommand) => {
     accountId,
     functionsRegistry,
     repositoryRoot,
+    watchIgnore: devConfig.watchIgnore ?? [],
     deployEnvironment,
   })
 

src/commands/dev/types.d.ts

@@ -18,4 +18,5 @@ export type DevConfig = NonNullable<NetlifyTOML['dev']> & {
   jwtSecret?: string | undefined
   jwtRolePath?: string | undefined
   pollingStrategies?: string[] | undefined
+  watchIgnore?: string[] | undefined
 }

src/commands/serve/serve.ts

@@ -210,6 +210,7 @@ export const serve = async (options: OptionValues, command: BaseCommand) => {
     siteInfo,
     state,
     accountId,
+    watchIgnore: devConfig.watchIgnore ?? [],
     deployEnvironment: [],
   })
 

src/lib/edge-functions/proxy.ts

@@ -95,6 +95,7 @@ export const initializeProxy = async ({
   settings,
   siteInfo,
   state,
+  watchIgnore,
   deployEnvironment,
 }: {
   accountId: string
@@ -117,6 +118,7 @@ export const initializeProxy = async ({
   settings: ServerSettings
   siteInfo: $TSFixMe
   state: LocalState
+  watchIgnore: string[]
   deployEnvironment: { key: string; value: string; isSecret: boolean; scopes: string[] }[]
 }) => {
   const isolatePort = await getAvailablePort()
@@ -139,7 +141,9 @@ export const initializeProxy = async ({
     inspectSettings,
     port: isolatePort,
     projectDir,
+    publishDir: settings.dist,
     repositoryRoot,
+    watchIgnore,
     deployEnvironment,
   })
   return async (req: ExtendedIncomingMessage) => {
@@ -214,7 +218,9 @@ const prepareServer = async ({
   inspectSettings,
   port,
   projectDir,
+  publishDir,
   repositoryRoot,
+  watchIgnore,
   deployEnvironment,
 }: {
   aiGatewayContext?: AIGatewayContext | null
@@ -228,7 +234,9 @@ const prepareServer = async ({
   inspectSettings: Parameters<typeof bundler.serve>[0]['inspectSettings']
   port: number
   projectDir: string
+  publishDir: string
   repositoryRoot?: string
+  watchIgnore: string[]
   deployEnvironment: { key: string; value: string; isSecret: boolean; scopes: string[] }[]
 }) => {
   try {
@@ -267,8 +275,10 @@ const prepareServer = async ({
       getUpdatedConfig,
       importMapFromTOML: config.functions?.['*'].deno_import_map,
       projectDir,
+      publishDir,
       runIsolate,
       servePath,
+      watchIgnore,
       deployEnvironment: deployEnvironment
         .filter(({ scopes }) => scopes.includes('functions'))
         // Scopes should be opaque to the functions registry: We just filtered down to only variables

src/lib/edge-functions/registry.ts

@@ -1,5 +1,6 @@
 import { readFile } from 'fs/promises'
-import { join } from 'path'
+import { statSync } from 'fs'
+import { join, resolve } from 'path'
 import { fileURLToPath } from 'url'
 
 import type { Declaration, EdgeFunction, FunctionConfig, Manifest, ModuleGraph } from '@netlify/edge-bundler'
@@ -48,8 +49,10 @@ interface EdgeFunctionsRegistryOptions {
   getUpdatedConfig: () => Promise<NormalizedCachedConfigConfig>
   importMapFromTOML?: string
   projectDir: string
+  publishDir: string
   runIsolate: RunIsolate
   servePath: string
+  watchIgnore: string[]
   deployEnvironment: { key: string; value: string; isSecret: boolean }[]
 }
 
@@ -143,6 +146,8 @@ export class EdgeFunctionsRegistryImpl implements EdgeFunctionsRegistry {
   private routes: Route[] = []
   private runIsolate: RunIsolate
   private servePath: string
+  private publishDir: string
+  private watchIgnore: string[]
   private projectDir: string
   private command: BaseCommand
 
@@ -157,8 +162,10 @@ export class EdgeFunctionsRegistryImpl implements EdgeFunctionsRegistry {
     getUpdatedConfig,
     importMapFromTOML,
     projectDir,
+    publishDir,
     runIsolate,
     servePath,
+    watchIgnore,
     deployEnvironment,
   }: EdgeFunctionsRegistryOptions) {
     this.aiGatewayContext = aiGatewayContext
@@ -169,6 +176,8 @@ export class EdgeFunctionsRegistryImpl implements EdgeFunctionsRegistry {
     this.getUpdatedConfig = getUpdatedConfig
     this.runIsolate = runIsolate
     this.servePath = servePath
+    this.publishDir = resolve(projectDir, publishDir)
+    this.watchIgnore = watchIgnore.map((p) => resolve(projectDir, p))
     this.projectDir = projectDir
 
     this.importMapFromTOML = importMapFromTOML
@@ -719,7 +728,23 @@ export class EdgeFunctionsRegistryImpl implements EdgeFunctionsRegistry {
   }
 
   private async setupWatcherForDirectory() {
-    const ignored = [`${this.servePath}/**`, this.internalImportMapPath]
+    const toIgnoredRegex = (dir: string) => new RegExp(`^${dir.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}(/|$)`)
+
+    const toIgnoredEntry = (p: string): string | RegExp => {
+      try {
+        if (statSync(p).isFile()) return p
+      } catch {
+        // path doesn't exist yet (e.g. publish dir before first build) — treat as directory
+      }
+      return toIgnoredRegex(p)
+    }
+
+    const ignored: (string | RegExp)[] = [
+      toIgnoredRegex(this.servePath),
+      ...(this.publishDir !== this.projectDir ? [toIgnoredRegex(this.publishDir)] : []),
+      ...this.watchIgnore.map(toIgnoredEntry),
+      this.internalImportMapPath,
+    ]
     const watcher = await watchDebounced(this.projectDir, {
       ignored,
       onAdd: () => this.checkForAddedOrDeletedFunctions(),

src/utils/proxy-server.ts

@@ -65,6 +65,7 @@ export const startProxyServer = async ({
   site,
   siteInfo,
   state,
+  watchIgnore,
   deployEnvironment,
 }: {
   accountId: string | undefined
@@ -90,6 +91,7 @@ export const startProxyServer = async ({
   projectDir: string
   repositoryRoot?: string
   state: LocalState
+  watchIgnore: string[]
   functionsRegistry?: FunctionsRegistry
   deployEnvironment: { key: string; value: string; isSecret: boolean; scopes: string[] }[]
 }) => {
@@ -116,6 +118,7 @@ export const startProxyServer = async ({
     accountId,
     repositoryRoot,
     api,
+    watchIgnore,
     deployEnvironment,
   })
   if (!url) {