Write esbuild metafile to output dir (#2087)

* write esbuild metafile to output dir

* add changeset

Author: nicktrn

.changeset/weak-parents-sip.md

@@ -0,0 +1,5 @@
+---
+"trigger.dev": patch
+---
+
+Output esbuild metafile, can be inspected after `deploy --dry run`

packages/cli-v3/src/build/buildWorker.ts

@@ -86,7 +86,12 @@ export async function buildWorker(options: BuildWorkerOptions) {
       ? rewriteBuildManifestPaths(buildManifest, options.destination)
       : buildManifest;
 
-    await writeDeployFiles(buildManifest, resolvedConfig, options.destination);
+    await writeDeployFiles({
+      buildManifest,
+      resolvedConfig,
+      outputPath: options.destination,
+      bundleResult,
+    });
   }
 
   return buildManifest;
@@ -140,11 +145,17 @@ function rewriteOutputPath(destinationDir: string, filePath: string) {
   }
 }
 
-async function writeDeployFiles(
-  buildManifest: BuildManifest,
-  resolvedConfig: ResolvedConfig,
-  outputPath: string
-) {
+async function writeDeployFiles({
+  buildManifest,
+  resolvedConfig,
+  outputPath,
+  bundleResult,
+}: {
+  buildManifest: BuildManifest;
+  resolvedConfig: ResolvedConfig;
+  outputPath: string;
+  bundleResult: BundleResult;
+}) {
   // Step 1. Read the package.json file
   const packageJson = await readProjectPackageJson(resolvedConfig.packageJsonPath);
 
@@ -176,6 +187,7 @@ async function writeDeployFiles(
   });
 
   await writeJSONFile(join(outputPath, "build.json"), buildManifestToJSON(buildManifest));
+  await writeJSONFile(join(outputPath, "metafile.json"), bundleResult.metafile);
   await writeContainerfile(outputPath, buildManifest);
 }
 

packages/cli-v3/src/build/bundle.ts

@@ -43,6 +43,7 @@ export type BundleResult = {
   contentHash: string;
   files: TaskFile[];
   configPath: string;
+  metafile: esbuild.Metafile;
   loaderEntryPoint: string | undefined;
   runWorkerEntryPoint: string | undefined;
   runControllerEntryPoint: string | undefined;
@@ -297,6 +298,7 @@ export async function getBundleResultFromBuild(
     indexControllerEntryPoint,
     initEntryPoint,
     contentHash: hasher.digest("hex"),
+    metafile: result.metafile,
   };
 }
 

packages/cli-v3/src/dev/backgroundWorker.ts

@@ -47,9 +47,6 @@ export class BackgroundWorker {
       throw new Error("Worker already initialized");
     }
 
-    // Write the build manifest to this.build.outputPath/build.json
-    await writeJSONFile(this.buildManifestPath, this.build, true);
-
     logger.debug("indexing worker manifest", { build: this.build, params: this.params });
 
     this.manifest = await indexWorkerManifest({