fix: replace tsconfck with native typescript config parsing

Author: Rahul Chaudhary

.changeset/afraid-bags-pretend.md

@@ -0,0 +1,5 @@
+---
+"@trigger.dev/build": patch
+---
+
+Remove deprecated tsconfck dependency and replace with native typescript compiler api to resolve typescript 6 peer dependency installation issues

packages/build/package.json

@@ -82,8 +82,7 @@
     "mlly": "^1.7.1",
     "pkg-types": "^1.1.3",
     "resolve": "^1.22.8",
-    "tinyglobby": "^0.2.2",
-    "tsconfck": "3.1.3"
+    "tinyglobby": "^0.2.2"
   },
   "devDependencies": {
     "@arethetypeswrong/cli": "^0.15.4",

packages/build/src/extensions/typescript.ts

@@ -1,8 +1,9 @@
+import { dirname } from "node:path";
 import { BuildExtension } from "@trigger.dev/core/v3/build";
 import { readFile } from "node:fs/promises";
 import typescriptPkg from "typescript";
 
-const { transpileModule, ModuleKind } = typescriptPkg;
+const { transpileModule, ModuleKind, findConfigFile, readConfigFile, parseJsonConfigFileContent, sys } = typescriptPkg;
 
 const decoratorMatcher = new RegExp(/((?<![(\s]\s*['"])@\w[.[\]\w\d]*\s*(?![;])[((?=\s)])/);
 
@@ -13,27 +14,42 @@ export function emitDecoratorMetadata(): BuildExtension {
       context.registerPlugin({
         name: "emitDecoratorMetadata",
         async setup(build) {
-          const { parseNative, TSConfckCache } = await import("tsconfck");
-          const cache = new TSConfckCache<any>();
+          const configCache = new Map<string, any>();
 
           build.onLoad({ filter: /\.ts$/ }, async (args) => {
             context.logger.debug("emitDecoratorMetadata onLoad", { args });
 
-            const { tsconfigFile, tsconfig } = await parseNative(args.path, {
-              ignoreNodeModules: true,
-              cache,
-            });
+            const searchPath = dirname(args.path);
+            const tsconfigFile = findConfigFile(searchPath, sys.fileExists, "tsconfig.json");
 
-            context.logger.debug("emitDecoratorMetadata parsed native tsconfig", {
-              tsconfig,
+            context.logger.debug("emitDecoratorMetadata resolved tsconfig file", {
               tsconfigFile,
               args,
             });
 
-            if (tsconfig.compilerOptions?.emitDecoratorMetadata !== true) {
+            let compilerOptions: any = {};
+
+            if (tsconfigFile) {
+              if (configCache.has(tsconfigFile)) {
+                compilerOptions = configCache.get(tsconfigFile);
+              } else {
+                const configFile = readConfigFile(tsconfigFile, sys.readFile);
+                if (configFile.config) {
+                  const parsedConfig = parseJsonConfigFileContent(
+                    configFile.config,
+                    sys,
+                    dirname(tsconfigFile)
+                  );
+                  compilerOptions = parsedConfig.options || {};
+                }
+                configCache.set(tsconfigFile, compilerOptions);
+              }
+            }
+
+            if (compilerOptions.emitDecoratorMetadata !== true) {
               context.logger.debug("emitDecoratorMetadata skipping", {
                 args,
-                tsconfig,
+                compilerOptions,
               });
 
               return undefined;
@@ -55,7 +71,7 @@ export function emitDecoratorMetadata(): BuildExtension {
             const program = transpileModule(ts, {
               fileName: args.path,
               compilerOptions: {
-                ...tsconfig.compilerOptions,
+                ...compilerOptions,
                 module: ModuleKind.ES2022,
               },
             });
@@ -67,3 +83,4 @@ export function emitDecoratorMetadata(): BuildExtension {
     },
   };
 }
+