inserted "undefined" variable into generated es5 lib

src/generate-stdlibs.ts

@@ -2,6 +2,7 @@ import TS from "typescript";
 import fs from "node:fs/promises";
 import { pretty_print } from "./pprint";
 import stringify from "json-stable-stringify";
+import { assert } from "./assert";
 
 const libdir = "./node_modules/typescript/lib";
 
@@ -83,7 +84,7 @@ async function get_libs(start: string) {
     const content = await fs.readFile(`${libdir}/lib.${libname}.d.ts`, {
       encoding: "utf8",
     });
-    const src = TS.createSourceFile("test.ts", content, {
+    const src = TS.createSourceFile("lib.ts", content, {
       languageVersion: TS.ScriptTarget.ESNext,
     });
     src.statements.forEach((x) => dostmt(x, libname));
@@ -96,6 +97,13 @@ async function get_libs(start: string) {
 
   async function get_libs(start: string) {
     await readit(start);
+    assert(libs["es5"] !== undefined);
+    assert(libs["es5"].type !== undefined);
+    assert(libs["es5"].value !== undefined);
+    assert(!libs["es5"].value.includes("undefined"));
+    assert(!libs["es5"].type.includes("undefined"));
+    libs["es5"].type.unshift("undefined");
+    libs["es5"].value.unshift("undefined");
     return libs;
   }
 
@@ -106,7 +114,7 @@ export async function generate_libs_file(start: string) {
   const libs = await get_libs(start);
   const file = `
 
-/* this file is automatically generated.  do not edit. */
+/* This file is automatically generated.  do not edit. */
 
 /* one more reason why macros are needed */
 

src/generated-stdlibs.ts

@@ -1,4 +1,4 @@
-/* this file is automatically generated.  do not edit. */
+/* This file is automatically generated.  do not edit. */
 
 /* one more reason why macros are needed */
 
@@ -2949,6 +2949,7 @@ export const stdlibs: libs = {
     ],
     module: ["Intl"],
     type: [
+      "undefined",
       "PropertyKey",
       "ThisParameterType",
       "OmitThisParameter",
@@ -2976,6 +2977,7 @@ export const stdlibs: libs = {
       "ArrayBufferLike",
     ],
     value: [
+      "undefined",
       "NaN",
       "Infinity",
       "eval",