diff --git a/ts/build-dts.ts b/ts/build-dts.ts
new file mode 100644
index 0000000..cec210c
--- /dev/null
+++ b/ts/build-dts.ts
@@ -0,0 +1,156 @@
+import { readFileSync, writeFileSync } from "fs";
+import { resolve, dirname, relative } from "path";
+import ts from "typescript";
+
+const ENTRY = resolve("src/index.ts");
+const OUT = resolve("dist/index.d.ts");
+
+const configFile = ts.findConfigFile("./", ts.sys.fileExists, "tsconfig.json");
+const configHost: ts.ParseConfigFileHost = {
+  ...ts.sys,
+  onUnRecoverableConfigFileDiagnostic: (d) => {
+    throw new Error(ts.flattenDiagnosticMessageText(d.messageText, "\n"));
+  },
+};
+
+const parsed = ts.getParsedCommandLineOfConfigFile(
+  configFile!,
+  { emitDeclarationOnly: true, declaration: true, noEmit: false },
+  configHost
+)!;
+
+const program = ts.createProgram([ENTRY], parsed.options);
+const checker = program.getTypeChecker();
+
+const emitted = new Set<string>(); // dedupe across files
+const lines: string[] = ["// Auto-generated by build-dts.ts", ""];
+
+function relativePath(fullfilename: string): string {
+  return relative(process.cwd(), fullfilename);
+}
+
+function fileText(sf: ts.SourceFile, node: ts.Node): string {
+  return sf.text.slice(node.getFullStart(), node.getEnd()).trim();
+}
+
+function tryResolveType(sf: ts.SourceFile, node: ts.TypeAliasDeclaration): string | null {
+  try {
+    const type = checker.getTypeAtLocation(node.name);
+    const resolved = checker.typeToString(
+      type,
+      undefined,
+      ts.TypeFormatFlags.NoTruncation | ts.TypeFormatFlags.UseFullyQualifiedType
+    );
+    if (resolved === node.name.text) return null;
+    return `export type ${node.name.text} = ${resolved};`;
+  } catch {
+    return null;
+  }
+}
+
+function visitFile(sf: ts.SourceFile) {
+  function visit(node: ts.Node) {
+    const isExported = (n: ts.Node) =>
+      (n as any).modifiers?.some((m: ts.Modifier) => m.kind === ts.SyntaxKind.ExportKeyword);
+
+    // export * from "./x" or export type * from "./x" — follow and inline
+    if (ts.isExportDeclaration(node)) {
+      const modSpec = node.moduleSpecifier;
+      if (modSpec && ts.isStringLiteral(modSpec)) {
+        const resolved = ts.resolveModuleName(
+          modSpec.text,
+          sf.fileName,
+          parsed.options,
+          ts.sys
+        ).resolvedModule;
+
+        if (resolved && !resolved.isExternalLibraryImport) {
+          const targetSf = program.getSourceFile(resolved.resolvedFileName);
+          if (targetSf) {
+            visitFile(targetSf); // recurse into the re-exported file
+            return;
+          }
+        }
+      }
+      // external or unresolved — copy verbatim
+      const text = fileText(sf, node);
+      if (!emitted.has(text)) {
+        emitted.add(text);
+        lines.push(`// ${relativePath(sf.fileName)}\n`);
+        lines.push(text);
+      }
+      return;
+    }
+
+    // export type Foo = ...
+    if (ts.isTypeAliasDeclaration(node) && isExported(node)) {
+      const resolved = tryResolveType(sf, node);
+      const text = resolved ?? fileText(sf, node);
+      if (!emitted.has(node.name.text)) {
+        emitted.add(node.name.text);
+        lines.push(`// ${relativePath(sf.fileName)}\n`);
+        lines.push(text);
+      }
+      return;
+    }
+
+    // export interface, enum, const enum
+    if (
+      (ts.isInterfaceDeclaration(node) || ts.isEnumDeclaration(node)) &&
+      isExported(node)
+    ) {
+      const text = fileText(sf, node);
+      if (!emitted.has((node as any).name.text)) {
+        emitted.add((node as any).name.text);
+        lines.push(`// ${relativePath(sf.fileName)}\n`);
+        lines.push(text);
+      }
+      return;
+    }
+
+    // export class
+    if (ts.isClassDeclaration(node) && isExported(node) && node.name) {
+      const text = fileText(sf, node);
+      if (!emitted.has(node.name.text)) {
+        emitted.add(node.name.text);
+        lines.push(`// ${relativePath(sf.fileName)}\n`);
+        lines.push(text);
+      }
+      return;
+    }
+
+    // export function / export const
+    if (
+      (ts.isFunctionDeclaration(node) || ts.isVariableStatement(node)) &&
+      isExported(node)
+    ) {
+      try {
+        if (ts.isFunctionDeclaration(node) && node.name) {
+          const sym = checker.getSymbolAtLocation(node.name);
+          if (sym && !emitted.has(sym.name)) {
+            emitted.add(sym.name);
+            const type = checker.getTypeOfSymbolAtLocation(sym, node);
+            for (const sig of type.getCallSignatures()) {
+              lines.push(`export declare function ${sym.name}${checker.signatureToString(sig)};`);
+            }
+            return;
+          }
+        }
+      } catch { }
+      const text = fileText(sf, node);
+      if (!emitted.has(text)) { emitted.add(text); lines.push(text); }
+      return;
+    }
+
+    ts.forEachChild(node, visit);
+  }
+
+  ts.forEachChild(sf, visit);
+}
+
+const entryFile = program.getSourceFile(ENTRY)!;
+visitFile(entryFile);
+lines.push("");
+
+writeFileSync(OUT, lines.join("\n"));
+// console.log(`✓ wrote ${OUT}`);
\ No newline at end of file
diff --git a/ts/bun.lock b/ts/bun.lock
index 940f010..2fcf62b 100644
--- a/ts/bun.lock
+++ b/ts/bun.lock
@@ -21,7 +21,7 @@
 
     "@types/mithril": ["@types/mithril@2.2.8", "", {}, "sha512-FN9Tv1+Nlr0LNPGnIL/xOxLJfu5WW2n8HAFeo4yxF+/O0per/8g080xlXoo+xj8baowAcfsNI3k80DxyLY34gQ=="],
 
-    "@types/node": ["@types/node@25.7.0", "", { "dependencies": { "undici-types": "~7.21.0" } }, "sha512-z+pdZyxE+RTQE9AcboAZCb4otwcrvgHD+GlBpPgn0emDVt0ohrTMhAwlr2Wd9nZ+nihhYFxO2pThz3C5qSu2Eg=="],
+    "@types/node": ["@types/node@25.9.1", "", { "dependencies": { "undici-types": ">=7.24.0 <7.24.7" } }, "sha512-xfrlY7UD5rMJk3ZVJP8BNzS28J36YJg+xp+LPXV1TdWxr8uMH5A860QNxYDGQe/ylDSgjxE52Q9VnO7p75tJxg=="],
 
     "bun-types": ["bun-types@1.3.14", "", { "dependencies": { "@types/node": "*" } }, "sha512-4N0ig0fEomHt5R0KCFWjovxow98rIoRwKolrYdCcknNwMekCXRnWEUvgu5soYV8QXtVsrUD8B95MBOZGPvr6KQ=="],
 
@@ -29,6 +29,6 @@
 
     "typescript": ["typescript@5.9.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw=="],
 
-    "undici-types": ["undici-types@7.21.0", "", {}, "sha512-w9IMgQrz4O0YN1LtB7K5P63vhlIOvC7opSmouCJ+ZywlPAlO9gIkJ+otk6LvGpAs2wg4econaCz3TvQ9xPoyuQ=="],
+    "undici-types": ["undici-types@7.24.6", "", {}, "sha512-WRNW+sJgj5OBN4/0JpHFqtqzhpbnV0GuB+OozA9gCL7a993SmU+1JBZCzLNxYsbMfIeDL+lTsphD5jN5N+n0zg=="],
   }
 }
diff --git a/ts/package.json b/ts/package.json
index 813f3d4..b9156a9 100644
--- a/ts/package.json
+++ b/ts/package.json
@@ -13,7 +13,7 @@
     "build": "bun run buildcjs && bun run buildmjs && bun run builddts",
     "buildcjs": "bun build src/index.ts --target browser --format cjs --outfile dist/index.cjs",
     "buildmjs": "bun build src/index.ts --target browser --format esm --outfile dist/index.mjs",
-    "builddts": "bun build src/index.ts --dts --outfile dist/index.d.ts",
+    "builddts": "bun run build-dts.ts",
     "test": "bun test"
   },
   "devDependencies": {
diff --git a/ts/src/index.ts b/ts/src/index.ts
index 744cb7b..65173bf 100644
--- a/ts/src/index.ts
+++ b/ts/src/index.ts
@@ -51,9 +51,16 @@
 
 
 export * from "./types";
-export { BinaryReader, packPixels, unpackPixels, packedSize, pad32 } from "./helper";
-export { MonoDisplayParser, MONOFORMAT_MAGIC_HEADER } from "./parser";
-export { MonoDisplayRenderer } from "./renderer";
-export { type MonoDisplayDriverOptions, MonoDisplayDriver } from "./driver";
-export { MonoDisplayFile, loadBinFile, buildBinBuffer } from "./file";
-export { cycleTheme } from "./themes"
\ No newline at end of file
+export type * from "./types";
+export * from "./helper";
+export type * from "./helper";
+export * from "./parser";
+export type * from "./parser";
+export * from "./renderer";
+export type * from "./renderer";
+export * from "./driver";
+export type * from "./driver";
+export * from "./file";
+export type * from "./file";
+export * from "./themes";
+export type * from "./themes";
\ No newline at end of file