diff --git a/debug/js.c b/debug/js.c
index 3d991c02..32b94ef2 100644
--- a/debug/js.c
+++ b/debug/js.c
@@ -39,20 +39,22 @@ JSC_CCALL(os_calc_mem,
 JSC_SSCALL(os_eval,
   if (!str2) return JS_ThrowReferenceError(js, "Second argument should be the script.");
   if (!str) return JS_ThrowReferenceError(js, "First argument should be the name of the script.");
-  ret = JS_Eval(js,str2,strlen(str2),str, 0);
+  JSValue bytecode = JS_Compile(js, str2, strlen(str2), str);
+  if (JS_IsException(bytecode)) return bytecode;
+  ret = JS_Integrate(js, bytecode, JS_NULL);
 )
 
 // Compile a string of JavaScript code into a function object.
 JSC_SSCALL(js_compile,
   if (!str2) return JS_ThrowReferenceError(js, "Second argument should be the script.");
   if (!str) return JS_ThrowReferenceError(js, "First argument should be the name of the script.");
-  ret = JS_Eval(js, str2, strlen(str2), str, JS_EVAL_FLAG_COMPILE_ONLY | JS_EVAL_FLAG_BACKTRACE_BARRIER);
+  ret = JS_Compile(js, str2, strlen(str2), str);
 )
 
-// Evaluate a function object in the current QuickJS context.
-JSC_CCALL(js_eval_compile,
-  JS_DupValue(js,argv[0]);
-  ret = JS_EvalFunction(js, argv[0]);
+// Link compiled bytecode with environment and execute.
+JSC_CCALL(js_integrate,
+  JSValue env = (argc > 1 && !JS_IsNull(argv[1])) ? argv[1] : JS_NULL;
+  ret = JS_Integrate(js, argv[0], env);
 )
 
 // Compile a function object into a bytecode blob.
@@ -92,7 +94,7 @@ static const JSCFunctionListEntry js_js_funcs[] = {
   MIST_FUNC_DEF(os, max_stacksize, 1),
   MIST_FUNC_DEF(os, eval, 2),
   MIST_FUNC_DEF(js, compile, 2),
-  MIST_FUNC_DEF(js, eval_compile, 1),
+  MIST_FUNC_DEF(js, integrate, 2),
   MIST_FUNC_DEF(js, compile_blob, 1),
   MIST_FUNC_DEF(js, compile_unblob, 1),
   MIST_FUNC_DEF(js, disassemble, 1),
diff --git a/internal/engine.cm b/internal/engine.cm
index 10f69856..e5f4d530 100644
--- a/internal/engine.cm
+++ b/internal/engine.cm
@@ -1,19 +1,12 @@
-(function engine() {  
-var _cell = globalThis.cell
-delete globalThis.cell
-var ACTORDATA = _cell.hidden.actorsym
+(function engine() {
+// Hidden vars (os, actorsym, init, core_path) come from env
+var ACTORDATA = actorsym
 var SYSYM = '__SYSTEM__'
 
-var hidden = _cell.hidden
-
-var os = hidden.os;
-
-_cell.os = null
+var _cell = {}
 
 var dylib_ext
 
-_cell.id ??= "newguy"
-
 switch(os.platform()) {
   case 'Windows': dylib_ext = '.dll'; break;
   case 'macOS': dylib_ext = '.dylib'; break;
@@ -28,8 +21,7 @@ function use_embed(name) {
   return load_internal("js_" + name + "_use")
 }
 
-globalThis.logical = function(val1)
-{
+function logical(val1) {
   if (val1 == 0 || val1 == false || val1 == "false" || val1 == null)
     return false;
   if (val1 == 1 || val1 == true || val1 == "true")
@@ -37,19 +29,19 @@ globalThis.logical = function(val1)
   return null;
 }
 
-globalThis.some = function(arr, pred) {
+function some(arr, pred) {
   return find(arr, pred) != null
 }
 
-globalThis.every = function(arr, pred) {
+function every(arr, pred) {
   return find(arr, x => not(pred(x))) == null
 }
 
-globalThis.starts_with = function(str, prefix) {
+function starts_with(str, prefix) {
   return search(str, prefix) == 0
 }
 
-globalThis.ends_with = function(str, suffix) {
+function ends_with(str, suffix) {
   return search(str, suffix, -length(suffix)) != null
 }
 
@@ -99,8 +91,7 @@ function use_core(path) {
 
 var blob = use_core('blob')
 
-globalThis.actor = function()
-{
+function actor() {
 
 }
 
@@ -108,7 +99,7 @@ var actor_mod = use_core('actor')
 var wota = use_core('wota')
 var nota = use_core('nota')
 
-globalThis.is_actor = function(value) {
+function is_actor(value) {
   return is_object(value) && value[ACTORDATA]
 }
 
@@ -138,10 +129,10 @@ function console_rec(line, file, msg) {
   // time: [${time.text("mb d yyyy h:nn:ss")}]
 }
 
-globalThis.log = function(name, args) {
+function log(name, args) {
   var caller = caller_data(1)
   var msg = args[0]
-  
+
   switch(name) {
     case 'console':
       os.print(console_rec(caller.line, caller.file, msg))
@@ -149,7 +140,7 @@ globalThis.log = function(name, args) {
     case 'error':
       msg = msg ?? Error()
       if (is_proto(msg, Error))
-        msg = msg.name + ": " + msg.message + "\n" + msg.stack 
+        msg = msg.name + ": " + msg.message + "\n" + msg.stack
       os.print(console_rec(caller.line, caller.file, msg))
       break
     case 'system':
@@ -201,9 +192,8 @@ function disrupt(err)
 
 actor_mod.on_exception(disrupt)
 
-_cell.args = _cell.hidden.init
-_cell.args ??= {}
-_cell.id ??= "newguy"
+_cell.args = init ?? {}
+_cell.id = "newguy"
 
 function create_actor(desc = {id:guid()}) {
   var actor = {}
@@ -224,10 +214,30 @@ var json = use_core('json')
 var time = use_core('time')
 
 var pronto = use_core('pronto')
-globalThis.fallback = pronto.fallback
-globalThis.parallel = pronto.parallel
-globalThis.race = pronto.race
-globalThis.sequence = pronto.sequence
+var fallback = pronto.fallback
+var parallel = pronto.parallel
+var race = pronto.race
+var sequence = pronto.sequence
+
+// Create runtime environment for modules
+var runtime_env = {
+  logical: logical,
+  some: some,
+  every: every,
+  starts_with: starts_with,
+  ends_with: ends_with,
+  actor: actor,
+  is_actor: is_actor,
+  log: log,
+  send: send,
+  fallback: fallback,
+  parallel: parallel,
+  race: race,
+  sequence: sequence
+}
+
+// Pass to os for shop to access
+os.runtime_env = runtime_env
 
 $_.time_limit = function(requestor, seconds)
 {
@@ -597,13 +607,13 @@ var need_stop = false
 
 var replies = {}
 
-globalThis.send = function send(actor, message, reply) {
+function send(actor, message, reply) {
   if (!is_object(actor))
     throw Error(`Must send to an actor object. Provided: ${actor}`);
-    
+
   if (!is_object(message))
     throw Error('Message must be an object')
-  var send = {type:"user", data: message}
+  var send_msg = {type:"user", data: message}
 
   if (actor[HEADER] && actor[HEADER].replycc) {
     var header = actor[HEADER]
@@ -611,7 +621,7 @@ globalThis.send = function send(actor, message, reply) {
       throw Error(`Supplied actor had a return, but it's not a valid actor! ${actor[HEADER]}`)
 
     actor = header.replycc
-    send.return = header.reply
+    send_msg.return = header.reply
   }
 
   if (reply) {
@@ -623,12 +633,12 @@ globalThis.send = function send(actor, message, reply) {
         delete replies[id]
       }
     }, REPLYTIMEOUT)
-    send.reply = id
-    send.replycc = $_.self 
+    send_msg.reply = id
+    send_msg.replycc = $_.self
   }
 
   // Instead of sending immediately, queue it
-  actor_prep(actor,send);
+  actor_prep(actor, send_msg);
 }
 
 stone(send)
@@ -785,8 +795,6 @@ if (!locator) {
 if (!locator)
   throw Error(`Main program ${_cell.args.program} could not be found`)
 
-stone(globalThis)
-
 $_.clock(_ => {
   // Get capabilities for the main program
   var file_info = shop.file_info ? shop.file_info(locator.path) : null
diff --git a/internal/shop.cm b/internal/shop.cm
index 60926b2f..6b5fd360 100644
--- a/internal/shop.cm
+++ b/internal/shop.cm
@@ -379,7 +379,16 @@ Shop.get_script_capabilities = function(path) {
 }
 
 function inject_env(inject) {
+  // Start with runtime functions from engine
   var env = {}
+  var rt = my$_.os ? my$_.os.runtime_env : null
+  if (rt) {
+    for (var k in rt) {
+      env[k] = rt[k]
+    }
+  }
+
+  // Add capability injections
   for (var i = 0; i < length(inject); i++) {
     var inj = inject[i]
     var key = trim(inj, '$')
@@ -391,6 +400,17 @@ function inject_env(inject) {
 
 function inject_bindings_code(inject) {
   var lines = []
+
+  // Runtime function bindings
+  var runtime_fns = ['logical', 'some', 'every', 'starts_with', 'ends_with',
+                     'actor', 'is_actor', 'log', 'send',
+                     'fallback', 'parallel', 'race', 'sequence']
+  for (var i = 0; i < length(runtime_fns); i++) {
+    var fn = runtime_fns[i]
+    push(lines, `var ${fn} = env["${fn}"];`)
+  }
+
+  // Capability bindings ($delay, $start, etc.)
   for (var i = 0; i < length(inject); i++) {
     var inj = inject[i]
     var key = trim(inj, '$')
@@ -428,22 +448,21 @@ function resolve_mod_fn(path, pkg) {
   var inject = Shop.script_inject_for(file_info)
   var content = text(fd.slurp(path))
   var script = script_form(path, content, file_pkg, inject);
-  
+
   var obj = pull_from_cache(stone(blob(script)))
   if (obj) {
     var fn = js.compile_unblob(obj)
-    return js.eval_compile(fn)
+    return js.integrate(fn, null)
   }
-  
+
   // Compile name is just for debug/stack traces
-//  var compile_name = pkg ? pkg + ':' + path : 'local:' + path
   var compile_name = path
-  
+
   var fn = js.compile(compile_name, script)
-  
+
   put_into_cache(stone(blob(script)), js.compile_blob(fn))
-  
-  return js.eval_compile(fn)
+
+  return js.integrate(fn, null)
 }
 
 // given a path and a package context
diff --git a/source/cell.c b/source/cell.c
index 57df65e9..a27f8280 100644
--- a/source/cell.c
+++ b/source/cell.c
@@ -121,13 +121,10 @@ JSValue js_math_use(JSContext *js);
 
 void script_startup(cell_rt *prt)
 {
-  JSRuntime *rt;
-
-  rt = JS_NewRuntime();
-
+  JSRuntime *rt = JS_NewRuntime();
   JSContext *js = JS_NewContextRaw(rt);
   JS_SetInterruptHandler(rt, (JSInterruptHandler *)actor_interrupt_cb, prt);
-  
+
   JS_AddIntrinsicBaseObjects(js);
   JS_AddIntrinsicEval(js);
   JS_AddIntrinsicRegExp(js);
@@ -139,38 +136,7 @@ void script_startup(cell_rt *prt)
   cell_rt *crt = JS_GetContextOpaque(js);
   JS_FreeValue(js, js_blob_use(js));
 
-  JSValue globalThis = JS_GetGlobalObject(js);
-
-  JSValue cell = JS_NewObject(js);
-  JS_SetPropertyStr(js,globalThis,"cell", cell);
-
-  JSValue hidden_fn = JS_NewObject(js);
-
-  JS_SetPropertyStr(js, cell, "hidden", hidden_fn);
-  JS_SetPropertyStr(js, hidden_fn, "os", js_os_use(js));
-
-  crt->actor_sym = JS_NewObject(js);
-  JS_SetPropertyStr(js, hidden_fn, "actorsym", JS_DupValue(js,crt->actor_sym));
-  
-  if (crt->init_wota) {
-    JS_SetPropertyStr(js, hidden_fn, "init", wota2value(js, crt->init_wota));
-    // init wota can now be freed
-    free(crt->init_wota);
-    crt->init_wota = NULL;
-  }
-
-  // Store the core path for scripts to use
-  JSValue js_cell = JS_GetPropertyStr(js, globalThis, "cell");
-  JSValue hidden = JS_GetPropertyStr(js, js_cell, "hidden");
-  if (core_path) {
-    JS_SetPropertyStr(js, hidden, "core_path", JS_NewString(js, core_path));
-  }
-  JS_FreeValue(js, hidden);
-  JS_FreeValue(js, js_cell);
-
-  JS_FreeValue(js, globalThis);
-
-  // Load engine.cm from the core directory
+  // Load and compile engine.cm
   size_t engine_size;
   char *data = load_core_file(ENGINE, &engine_size);
   if (!data) {
@@ -178,9 +144,39 @@ void script_startup(cell_rt *prt)
     return;
   }
 
-  crt->state = ACTOR_RUNNING;
-  JSValue v = JS_Eval(js, data, engine_size, ENGINE, 0);
+  JSValue bytecode = JS_Compile(js, data, engine_size, ENGINE);
   free(data);
+  if (JS_IsException(bytecode)) {
+    uncaught_exception(js, bytecode);
+    return;
+  }
+
+  // Create hidden environment
+  JSValue hidden_env = JS_NewObject(js);
+  JS_SetPropertyStr(js, hidden_env, "os", js_os_use(js));
+
+  crt->actor_sym = JS_NewObject(js);
+  JS_SetPropertyStr(js, hidden_env, "actorsym", JS_DupValue(js, crt->actor_sym));
+
+  // Always set init (even if null)
+  if (crt->init_wota) {
+    JS_SetPropertyStr(js, hidden_env, "init", wota2value(js, crt->init_wota));
+    free(crt->init_wota);
+    crt->init_wota = NULL;
+  } else {
+    JS_SetPropertyStr(js, hidden_env, "init", JS_NULL);
+  }
+
+  if (core_path) {
+    JS_SetPropertyStr(js, hidden_env, "core_path", JS_NewString(js, core_path));
+  }
+
+  // Stone the environment
+  hidden_env = JS_Stone(js, hidden_env);
+
+  // Integrate and run
+  crt->state = ACTOR_RUNNING;
+  JSValue v = JS_Integrate(js, bytecode, hidden_env);
   uncaught_exception(js, v);
   crt->state = ACTOR_IDLE;
   set_actor_state(crt);
@@ -286,55 +282,21 @@ static int run_eval(const char *script_or_file, int print_bytecode)
 
   int result = 0;
 
-  if (print_bytecode) {
-    /* Compile only, then dump and optionally execute */
-    JSValue func = JS_Eval(ctx, script, strlen(script), filename, JS_EVAL_FLAG_COMPILE_ONLY);
-    if (JS_IsException(func)) {
-      uncaught_exception(ctx, func);
-      result = 1;
-    } else {
-      printf("=== Compiled Bytecode ===\n");
-      JS_DumpFunctionBytecode(ctx, func);
-
-      /* Link - resolve global references */
-      JSValue linked = JS_LinkFunction(ctx, func);
-      if (JS_IsException(linked)) {
-        uncaught_exception(ctx, linked);
-        result = 1;
-      } else {
-        printf("\n=== Linked Bytecode ===\n");
-        JS_DumpFunctionBytecode(ctx, linked);
-
-        /* Now execute the linked bytecode */
-        JSValue v = JS_EvalFunction(ctx, linked);
-        if (JS_IsException(v)) {
-          uncaught_exception(ctx, v);
-          result = 1;
-        } else {
-          JS_FreeValue(ctx, v);
-        }
-      }
-    }
+  JSValue bytecode = JS_Compile(ctx, script, strlen(script), filename);
+  if (JS_IsException(bytecode)) {
+    uncaught_exception(ctx, bytecode);
+    result = 1;
   } else {
-    /* Compile, link, execute */
-    JSValue func = JS_Eval(ctx, script, strlen(script), filename, JS_EVAL_FLAG_COMPILE_ONLY);
-    if (JS_IsException(func)) {
-      uncaught_exception(ctx, func);
+    if (print_bytecode) {
+      printf("=== Compiled Bytecode ===\n");
+      JS_DumpFunctionBytecode(ctx, bytecode);
+    }
+    JSValue v = JS_Integrate(ctx, bytecode, JS_NULL);
+    if (JS_IsException(v)) {
+      uncaught_exception(ctx, v);
       result = 1;
     } else {
-      JSValue linked = JS_LinkFunction(ctx, func);
-      if (JS_IsException(linked)) {
-        uncaught_exception(ctx, linked);
-        result = 1;
-      } else {
-        JSValue v = JS_EvalFunction(ctx, linked);
-        if (JS_IsException(v)) {
-          uncaught_exception(ctx, v);
-          result = 1;
-        } else {
-          JS_FreeValue(ctx, v);
-        }
-      }
+      JS_FreeValue(ctx, v);
     }
   }
 
diff --git a/source/quickjs.c b/source/quickjs.c
index e2f3ffc1..564ba28f 100644
--- a/source/quickjs.c
+++ b/source/quickjs.c
@@ -17254,18 +17254,24 @@ static JSValue JS_EvalFunctionInternal (JSContext *ctx, JSValue fun_obj, JSValue
   return ret_val;
 }
 
-JSValue JS_EvalFunction (JSContext *ctx, JSValue fun_obj) {
-  return JS_EvalFunctionInternal (ctx, fun_obj, ctx->global_obj, NULL);
+/* Compile source code to bytecode without executing.
+   Returns unlinked bytecode on success, JS_EXCEPTION on error.
+   'input' must be zero terminated i.e. input[input_len] = '\0'. */
+JSValue JS_Compile (JSContext *ctx, const char *input, size_t input_len,
+                    const char *filename) {
+  return JS_EvalInternal (ctx, ctx->global_obj, input, input_len, filename,
+                          JS_EVAL_FLAG_COMPILE_ONLY | JS_EVAL_FLAG_BACKTRACE_BARRIER, -1);
 }
 
-/* Eval function with environment record for variable resolution.
-   The env must be a stoned record. Variables are resolved env first,
-   then global intrinsics. */
-JSValue JS_EvalFunctionEnv (JSContext *ctx, JSValue fun_obj, JSValue env) {
+/* Link compiled bytecode with environment and execute.
+   The env should be a stoned record (or null for no env).
+   Variables resolve: env first, then global intrinsics. */
+JSValue JS_Integrate (JSContext *ctx, JSValue fun_obj, JSValue env) {
   JSValue ret_val;
   JSValue saved_env;
   uint32_t tag;
   JSGCRef env_ref, fun_ref;
+  JSFunctionBytecode *tpl, *linked_bc;
 
   tag = JS_VALUE_GET_TAG (fun_obj);
   /* JSFunctionBytecode uses OBJ_CODE type with JS_TAG_PTR */
@@ -17279,13 +17285,15 @@ JSValue JS_EvalFunctionEnv (JSContext *ctx, JSValue fun_obj, JSValue env) {
   JS_AddGCRef (ctx, &fun_ref);
   fun_ref.val = fun_obj;
 
-  /* Link with environment */
-  JSValue linked = JS_LinkFunctionEnv (ctx, fun_ref.val, env_ref.val);
-  if (JS_IsException (linked)) {
+  /* Link bytecode with environment */
+  tpl = (JSFunctionBytecode *)JS_VALUE_GET_PTR (fun_ref.val);
+  linked_bc = js_link_bytecode (ctx, tpl, env_ref.val);
+  if (!linked_bc) {
     JS_DeleteGCRef (ctx, &fun_ref);
     JS_DeleteGCRef (ctx, &env_ref);
     return JS_EXCEPTION;
   }
+  JSValue linked = JS_MKPTR (linked_bc);
 
   /* Update env from GC ref (may have moved) */
   env = env_ref.val;
@@ -17306,32 +17314,6 @@ JSValue JS_EvalFunctionEnv (JSContext *ctx, JSValue fun_obj, JSValue env) {
   return ret_val;
 }
 
-/* Link compiled bytecode to context - resolves global references.
-   Returns linked bytecode on success, JS_EXCEPTION on link error.
-   The linked bytecode is a separate copy that can be modified. */
-JSValue JS_LinkFunction (JSContext *ctx, JSValue fun_obj) {
-  return JS_LinkFunctionEnv (ctx, fun_obj, JS_NULL);
-}
-
-/* Link compiled bytecode with environment record for variable resolution.
-   Variables are resolved: env first, then global intrinsics.
-   Returns linked bytecode on success, JS_EXCEPTION on link error. */
-JSValue JS_LinkFunctionEnv (JSContext *ctx, JSValue fun_obj, JSValue env) {
-  if (JS_VALUE_GET_TAG (fun_obj) != JS_TAG_PTR)
-    return JS_ThrowTypeError (ctx, "bytecode function expected");
-
-  objhdr_t *hdr = (objhdr_t *)JS_VALUE_GET_PTR (fun_obj);
-  if (objhdr_type (*hdr) != OBJ_CODE)
-    return JS_ThrowTypeError (ctx, "bytecode function expected");
-
-  JSFunctionBytecode *tpl = (JSFunctionBytecode *)hdr;
-  JSFunctionBytecode *linked = js_link_bytecode (ctx, tpl, env);
-  if (!linked)
-    return JS_EXCEPTION;
-
-  return JS_MKPTR (linked);
-}
-
 /* 'input' must be zero terminated i.e. input[input_len] = '\0'. */
 static JSValue __JS_EvalInternal (JSContext *ctx, JSValue this_obj, const char *input, size_t input_len, const char *filename, int flags, int scope_idx) {
   JSParseState s1, *s = &s1;
@@ -17410,19 +17392,6 @@ static JSValue JS_EvalObject (JSContext *ctx, JSValue this_obj, JSValue val, int
   return ret;
 }
 
-JSValue JS_EvalThis (JSContext *ctx, JSValue this_obj, const char *input, size_t input_len, const char *filename, int eval_flags) {
-  int eval_type = eval_flags & JS_EVAL_TYPE_MASK;
-  JSValue ret;
-
-  assert (eval_type == JS_EVAL_TYPE_GLOBAL);
-  ret = JS_EvalInternal (ctx, this_obj, input, input_len, filename, eval_flags, -1);
-  return ret;
-}
-
-JSValue JS_Eval (JSContext *ctx, const char *input, size_t input_len, const char *filename, int eval_flags) {
-  return JS_EvalThis (ctx, ctx->global_obj, input, input_len, filename, eval_flags);
-}
-
 /*******************************************************************/
 /* object list */
 
@@ -24211,7 +24180,7 @@ static JSValue js_cell_eval (JSContext *ctx, JSValue this_val, int argc, JSValue
   }
 
   /* Compile the text */
-  JSValue fun = JS_Eval (ctx, str, len, "<eval>", JS_EVAL_FLAG_COMPILE_ONLY);
+  JSValue fun = JS_Compile (ctx, str, len, "<eval>");
   JS_FreeCString (ctx, str);
   if (JS_IsException (fun)) {
     JS_DeleteGCRef (ctx, &env_ref);
@@ -24222,8 +24191,8 @@ static JSValue js_cell_eval (JSContext *ctx, JSValue this_val, int argc, JSValue
   env = env_ref.val;
   JS_DeleteGCRef (ctx, &env_ref);
 
-  /* Eval with environment */
-  result = JS_EvalFunctionEnv (ctx, fun, env);
+  /* Integrate with environment */
+  result = JS_Integrate (ctx, fun, env);
   return result;
 }
 
diff --git a/source/quickjs.h b/source/quickjs.h
index 825faee9..3dd5ec97 100644
--- a/source/quickjs.h
+++ b/source/quickjs.h
@@ -334,18 +334,13 @@ JS_IsShortFloat (JSValue v) {
 #define JS_DEFAULT_STACK_SIZE (1024 * 1024)
 #endif
 
-/* JS_Eval() flags */
+/* Internal eval flags */
 #define JS_EVAL_TYPE_GLOBAL (0 << 0)   /* global code (default) */
 #define JS_EVAL_TYPE_DIRECT (2 << 0)   /* direct call (internal use) */
 #define JS_EVAL_TYPE_INDIRECT (3 << 0) /* indirect call (internal use) */
 #define JS_EVAL_TYPE_MASK (3 << 0)
-
-/* compile but do not run. The result is an object with a
-   JS_TAG_FUNCTION_BYTECODE or JS_TAG_MODULE tag. It can be executed
-   with JS_EvalFunction(). */
-#define JS_EVAL_FLAG_COMPILE_ONLY (1 << 5)
-/* don't include the stack frames before this eval in the Error() backtraces */
-#define JS_EVAL_FLAG_BACKTRACE_BARRIER (1 << 6)
+#define JS_EVAL_FLAG_COMPILE_ONLY (1 << 5)      /* internal use */
+#define JS_EVAL_FLAG_BACKTRACE_BARRIER (1 << 6) /* internal use */
 
 typedef JSValue JSCFunction (JSContext *ctx, JSValue this_val, int argc,
                              JSValue *argv);
@@ -727,12 +722,17 @@ int JS_SetPropertyInt64 (JSContext *ctx, JSValue this_obj, int64_t idx, JSValue
 JSValue JS_GetOwnPropertyNames (JSContext *ctx, JSValue obj);
 
 JSValue JS_Call (JSContext *ctx, JSValue func_obj, JSValue this_obj, int argc, JSValue *argv);
-/* 'input' must be zero terminated i.e. input[input_len] = '\0'. */
-JSValue JS_Eval (JSContext *ctx, const char *input, size_t input_len,
-                 const char *filename, int eval_flags);
-/* same as JS_Eval() but with an explicit 'this_obj' parameter */
-JSValue JS_EvalThis (JSContext *ctx, JSValue this_obj, const char *input,
-                     size_t input_len, const char *filename, int eval_flags);
+
+/* Compile source code to bytecode without executing.
+   'input' must be zero terminated i.e. input[input_len] = '\0'.
+   Returns unlinked bytecode on success, JS_EXCEPTION on error. */
+JSValue JS_Compile (JSContext *ctx, const char *input, size_t input_len,
+                    const char *filename);
+
+/* Link compiled bytecode with environment and execute.
+   env should be stoned record or null.
+   Variables resolve: env first, then global intrinsics. */
+JSValue JS_Integrate (JSContext *ctx, JSValue bytecode, JSValue env);
 JSValue JS_GetGlobalObject (JSContext *ctx);
 void JS_SetOpaque (JSValue obj, void *opaque);
 void *JS_GetOpaque (JSValue obj, JSClassID class_id);
@@ -779,27 +779,9 @@ uint8_t *JS_WriteObject2 (JSContext *ctx, size_t *psize, JSValue obj,
 #define JS_READ_OBJ_REFERENCE (1 << 3) /* allow object references */
 JSValue JS_ReadObject (JSContext *ctx, const uint8_t *buf, size_t buf_len,
                        int flags);
-/* instantiate and evaluate a bytecode function. Only used when
-   reading a script or module with JS_ReadObject() */
-JSValue JS_EvalFunction (JSContext *ctx, JSValue fun_obj);
-
-/* Eval function with environment record for variable resolution.
-   The env must be a stoned record. Variables are resolved env first,
-   then global intrinsics. */
-JSValue JS_EvalFunctionEnv (JSContext *ctx, JSValue fun_obj, JSValue env);
-
 /* Dump bytecode of a compiled function (for debugging) */
 void JS_DumpFunctionBytecode (JSContext *ctx, JSValue func_val);
 
-/* Link compiled bytecode to context - resolves global references.
-   Returns linked bytecode on success, JS_EXCEPTION on link error. */
-JSValue JS_LinkFunction (JSContext *ctx, JSValue func_val);
-
-/* Link compiled bytecode with environment record for variable resolution.
-   Variables are resolved: env first, then global intrinsics.
-   Returns linked bytecode on success, JS_EXCEPTION on link error. */
-JSValue JS_LinkFunctionEnv (JSContext *ctx, JSValue func_val, JSValue env);
-
 /* C function definition */
 typedef enum JSCFunctionEnum {
   JS_CFUNC_generic,