Expose esbuild keepNames option (experimental)

Author: nicktrn

.changeset/gold-insects-invite.md

@@ -0,0 +1,6 @@
+---
+"trigger.dev": patch
+"@trigger.dev/core": patch
+---
+
+Expose esbuild `keepNames` option (experimental)

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

@@ -174,9 +174,10 @@ async function createBuildOptions(
   options: BundleOptions & { entryPoints: string[]; buildResultPlugin?: esbuild.Plugin }
 ): Promise<esbuild.BuildOptions & { metafile: true }> {
   const customConditions = options.resolvedConfig.build?.conditions ?? [];
-
   const conditions = [...customConditions, "trigger.dev", "module", "node"];
 
+  const keepNames = options.resolvedConfig.build?.experimental_keepNames ?? false;
+
   const $buildPlugins = await buildPlugins(options.target, options.resolvedConfig);
 
   return {
@@ -193,6 +194,7 @@ async function createBuildOptions(
     sourcemap: true,
     sourcesContent: options.target === "dev",
     conditions,
+    keepNames,
     format: "esm",
     target: ["node20", "es2022"],
     loader: {

packages/core/src/v3/config.ts

@@ -183,6 +183,19 @@ export type TriggerConfig = {
      */
     experimental_autoDetectExternal?: boolean;
 
+    /**
+     * **WARNING: This is an experimental feature and might be removed in a future version.**
+     *
+     * Preserve the original names of functions and classes in the bundle. This can fix issues with frameworks that rely on the original names for registration and binding, for example MikroORM.
+     *
+     * @link https://esbuild.github.io/api/#keep-names
+     *
+     * @default false
+     *
+     * @deprecated (experimental)
+     */
+    experimental_keepNames?: boolean;
+
     jsx?: {
       /**
        * @default "React.createElement"