refactor(cli,build,core): parse-based createRequire scanner, scoped install-command suppression

Replaces the hand-rolled lexer and regex scanner with a @babel/parser scan
(typescript/jsx with fallbacks, parse failures skip the file), eliminating
the comment/string/regex/JSX misparse class outright; template-literal
specifiers now also match. Cross-file require functions resolve through
the metafile's own import records, so index files and path aliases work.
Build-layer install commands suppress only the packages they actually
name instead of silencing the whole feature, first-party extensions that
install no node packages declare that so dev warnings stay active for
them, extension matchers are computed before internal extensions are
prepended, deploy warning output honors plain mode and keeps
location-less messages with a segment-exact node_modules filter, and
additionalPackages only claims packages for the deploy target.

Author: matt-aitken

packages/build/src/extensions/audioWaveform.ts

@@ -17,6 +17,10 @@ export function audioWaveform(options: AudioWaveformOptions = {}): BuildExtensio
 class AudioWaveformExtension implements BuildExtension {
   public readonly name = "AudioWaveformExtension";
 
+  installedPackagesForTarget() {
+    return [];
+  }
+
   constructor(private options: AudioWaveformOptions = {}) {}
 
   async onBuildComplete(context: BuildContext, manifest: BuildManifest) {

packages/build/src/extensions/core/additionalFiles.ts

@@ -8,6 +8,7 @@ export type AdditionalFilesOptions = {
 export function additionalFiles(options: AdditionalFilesOptions): BuildExtension {
   return {
     name: "additionalFiles",
+    installedPackagesForTarget: () => [],
     async onBuildComplete(context, manifest) {
       await addAdditionalFilesToBuild("additionalFiles", options, context, manifest);
     },

packages/build/src/extensions/core/additionalPackages.ts

@@ -20,7 +20,7 @@ export function additionalPackages(options: AdditionalPackagesOptions): BuildExt
   return {
     name: "additionalPackages",
     installedPackagesForTarget(target) {
-      if (target === "dev") {
+      if (target !== "deploy") {
         return [];
       }
 

packages/build/src/extensions/core/aptGet.ts

@@ -7,6 +7,7 @@ export type AptGetOptions = {
 export function aptGet(options: AptGetOptions): BuildExtension {
   return {
     name: "aptGet",
+    installedPackagesForTarget: () => [],
     onBuildComplete(context) {
       if (context.target === "dev") {
         return;

packages/build/src/extensions/core/ffmpeg.ts

@@ -24,6 +24,7 @@ export type FfmpegOptions = {
 export function ffmpeg(options: FfmpegOptions = {}): BuildExtension {
   return {
     name: "ffmpeg",
+    installedPackagesForTarget: () => [],
     onBuildComplete(context) {
       if (context.target === "dev") {
         return;

packages/build/src/extensions/core/syncEnvVars.ts

@@ -77,6 +77,7 @@ export type SyncEnvVarsOptions = {
 export function syncEnvVars(fn: SyncEnvVarsFunction, options?: SyncEnvVarsOptions): BuildExtension {
   return {
     name: "SyncEnvVarsExtension",
+    installedPackagesForTarget: () => [],
     async onBuildComplete(context, manifest) {
       if (context.target === "dev") {
         return;

packages/build/src/extensions/lightpanda.ts

@@ -10,6 +10,7 @@ export const lightpanda = ({
   disableTelemetry = false,
 }: LightpandaOpts = {}): BuildExtension => ({
   name: "lightpanda",
+  installedPackagesForTarget: () => [],
   onBuildComplete: async (context) => {
     if (context.target === "dev") {
       return;

packages/build/src/extensions/puppeteer.ts

@@ -8,6 +8,10 @@ export function puppeteer() {
 class PuppeteerExtension implements BuildExtension {
   public readonly name = "PuppeteerExtension";
 
+  installedPackagesForTarget() {
+    return [];
+  }
+
   async onBuildComplete(context: BuildContext, manifest: BuildManifest) {
     if (context.target === "dev") {
       return;

packages/build/src/extensions/typescript.ts

@@ -8,6 +8,7 @@ const decoratorMatcher = new RegExp(/((?<![(\s]\s*['"])@\w[.[\]\w\d]*\s*(?![;])[
 export function emitDecoratorMetadata(): BuildExtension {
   return {
     name: "emitDecoratorMetadata",
+    installedPackagesForTarget: () => [],
     onBuildStart(context) {
       const { convertCompilerOptionsFromJson, transpileModule, ModuleKind } = loadTypescript(
         context.workingDir

packages/cli-v3/package.json

@@ -107,6 +107,7 @@
     "ini": "^5.0.0",
     "json-stable-stringify": "^1.3.0",
     "jsonc-parser": "3.2.1",
+    "@babel/parser": "^7.29.7",
     "magicast": "^0.3.4",
     "minimatch": "^10.0.1",
     "mlly": "^1.7.1",