Add tsconfig.json for @babel/helpers/src/helpers

Makefile.source.mjs

@@ -299,6 +299,11 @@ target["prepublish-prepare-dts-no-clean"] = function () {
 target["tscheck"] = function () {
   target["generate-tsconfig"]();
   node(["scripts/parallel-tsc/tsc.js", "."]);
+  target["tscheck-helpers"]();
+};
+
+target["tscheck-helpers"] = function () {
+  yarn(["tsc", "-p", "./packages/babel-helpers/src/helpers/tsconfig.json"]);
 };
 
 target["clean-ts"] = function () {

packages/babel-helpers/scripts/generate-helpers.js

@@ -8,7 +8,7 @@ import { gzipSync } from "zlib";
 import { IS_BABEL_8 } from "$repo-utils";
 
 const HELPERS_FOLDER = new URL("../src/helpers", import.meta.url);
-const IGNORED_FILES = new Set(["package.json"]);
+const IGNORED_FILES = new Set(["package.json", "tsconfig.json"]);
 
 export default async function generateHelpers() {
   let output = `/*

packages/babel-helpers/src/helpers/tsconfig.json

@@ -0,0 +1,23 @@
+{
+  "compilerOptions": {
+    "rootDir": ".",
+    "target": "ESNext",
+    "module": "preserve",
+    "lib": ["ESNext"],
+    "declaration": false,
+    "noEmit": true,
+    "moduleResolution": "Bundler",
+    "esModuleInterop": true,
+    "isolatedModules": true,
+    "allowImportingTsExtensions": true,
+    "strict": true
+  },
+  "include": ["./*.ts"],
+  "exclude": [
+    "./applyDecs2305.ts",
+    "./applyDecs2311.ts",
+    "./construct.ts",
+    "./setFunctionName.ts",
+    "./usingCtx.ts"
+  ]
+}

tsconfig.base.json

@@ -19,5 +19,9 @@
     "noImplicitAny": true,
     "strictBindCallApply": true,
     "incremental": true
-  }
+  },
+  "exclude": ["./packages/babel-helpers/src/helpers/**/*"],
+  "references": [{
+    "path": "./packages/babel-helpers/src/helpers/**/tsconfig.json"
+  }]
 }