diff --git a/selfhosted/build.mjs b/selfhosted/build.mjs
index 6adfbd10..6e829ce7 100644
--- a/selfhosted/build.mjs
+++ b/selfhosted/build.mjs
@@ -12,7 +12,6 @@ export const readFileSync = fs.readFileSync;
 export const writeFileSync = fs.writeFileSync;
 export const statSync = fs.statSync;
 export const existsSync = fs.existsSync;
-export const unlinkSync = fs.unlinkSync;
 export const mkdtempSync = fs.mkdtempSync;
 export const rmSync = fs.rmSync;
 export const mkdirSync = fs.mkdirSync;
@@ -697,7 +696,7 @@ addModule('<entry>');
 
 let output = `// generated by selfhosted/build.mjs
 "use strict";
-var Prefs, argvChanged, Buffer, process, __porfforNode;
+var Prefs, argvChanged, process, __porfforNode;
 var version, porfforFile, typedInput, precompile, noi32F64CallConv;
 var pageSize, _uniqId = 0, funcBodies, precompileI32SignsFor;
 var importFuncs, importDelta;
@@ -736,7 +735,6 @@ output = output.replaceAll('globalThis.file', 'porfforFile');
 const optimizedGlobals = [
   'Prefs',
   'argvChanged',
-  'Buffer',
   'process',
   '__porfforNode',
   'version',
diff --git a/selfhosted/native.js b/selfhosted/native.js
index 38c37c78..aefa5369 100644
--- a/selfhosted/native.js
+++ b/selfhosted/native.js
@@ -350,16 +350,6 @@ if (path_owned) free(path_owned);
   return ok !== 0;
 };
 
-const unlinkSync = path => {
-  const pathType = Porffor.type(path);
-  Porffor.c`
-char *path_owned;
-char *path_ptr = __porffor_node_cstr(MEM, path, (i32)pathType.val, &path_owned);
-unlink(path_ptr);
-if (path_owned) free(path_owned);
-`;
-};
-
 const mkdtempSync = prefix => {
   const prefixType = Porffor.type(prefix);
   const out = Porffor.malloc(prefix.length + 12);
@@ -424,7 +414,6 @@ if (cmd_owned) free(cmd_owned);
   }
 
   if (status !== 0) throw new Error('execSync failed');
-  return '';
 };
 
 const mkdirSync = (path, options = undefined) => {
@@ -536,13 +525,13 @@ if (path_owned) free(path_owned);
   if (status != 0) throw new Error('symlinkSync failed');
 };
 
-const cpSync = (src, dest, options = undefined) => {
+const cpSync = (src, dest) => {
   const st = statSync(src);
   if (st.isDirectory()) {
     mkdirSync(dest, { recursive: true });
     const entries = readdirSync(src);
     for (let i = 0; i < entries.length; i++) {
-      cpSync(src + '/' + entries[i], dest + '/' + entries[i], options);
+      cpSync(src + '/' + entries[i], dest + '/' + entries[i]);
     }
     return;
   }
@@ -796,10 +785,6 @@ if (nativeArgc() > 0) argv.push(nativeArgv(0));
 argv.push('runtime/index.js');
 for (let i = 1; i < nativeArgc(); i++) argv.push(nativeArgv(i));
 
-globalThis.Buffer = {
-  from: value => value
-};
-
 globalThis.setInterval = () => 0;
 globalThis.clearInterval = () => {};
 
@@ -810,7 +795,6 @@ globalThis.process = {
   platform: nativePlatform(),
   version: 'porffor-native',
   stdin: {
-    isTTY: nativeIsTTY(0),
     readLine: nativeReadLine
   },
   stdout: {
@@ -823,8 +807,7 @@ globalThis.process = {
   },
   exit: (code = 0) => {
     Porffor.c`exit((int)code.val);`;
-  },
-  on: () => {}
+  }
 };
 
 globalThis.__porfforNode = {
@@ -833,7 +816,6 @@ globalThis.__porfforNode = {
     writeFileSync,
     statSync,
     existsSync,
-    unlinkSync,
     mkdtempSync,
     rmSync,
     mkdirSync,