diff --git a/std/portable/index.js b/std/portable/index.js
index 98f0487ef1..d027d8d967 100644
--- a/std/portable/index.js
+++ b/std/portable/index.js
@@ -1,442 +1,446 @@
 /** @module std/portable *//***/
 
 var globalScope = typeof window !== "undefined" && window || typeof global !== "undefined" && global || self;
+if (typeof globalScope.ASC_TARGET === "undefined") {
+
+  globalScope.ASC_TARGET = 0; // Target.JS
+  globalScope.ASC_NO_ASSERT = false;
+  globalScope.ASC_MEMORY_BASE = 0;
+  globalScope.ASC_OPTIMIZE_LEVEL = 3;
+  globalScope.ASC_SHRINK_LEVEL = 0;
+  globalScope.ASC_FEATURE_MUTABLE_GLOBAL = false;
+  globalScope.ASC_FEATURE_SIGN_EXTENSION = false;
+  globalScope.ASC_FEATURE_BULK_MEMORY = false;
+  globalScope.ASC_FEATURE_SIMD = false;
+  globalScope.ASC_FEATURE_THREADS = false;
+
+  var F64 = new Float64Array(1);
+  var U64 = new Uint32Array(F64.buffer);
+
+  Object.defineProperties(
+    globalScope["i8"] = function i8(value) { return value << 24 >> 24; },
+    {
+      "MIN_VALUE": { value: -128, writable: false },
+      "MAX_VALUE": { value:  127, writable: false }
+    }
+  );
 
-globalScope.ASC_TARGET = 0; // Target.JS
-globalScope.ASC_NO_ASSERT = false;
-globalScope.ASC_MEMORY_BASE = 0;
-globalScope.ASC_OPTIMIZE_LEVEL = 3;
-globalScope.ASC_SHRINK_LEVEL = 0;
-globalScope.ASC_FEATURE_MUTABLE_GLOBAL = false;
-globalScope.ASC_FEATURE_SIGN_EXTENSION = false;
-globalScope.ASC_FEATURE_BULK_MEMORY = false;
-globalScope.ASC_FEATURE_SIMD = false;
-globalScope.ASC_FEATURE_THREADS = false;
-
-var F64 = new Float64Array(1);
-var U64 = new Uint32Array(F64.buffer);
-
-Object.defineProperties(
-  globalScope["i8"] = function i8(value) { return value << 24 >> 24; },
-  {
-    "MIN_VALUE": { value: -128, writable: false },
-    "MAX_VALUE": { value:  127, writable: false }
-  }
-);
-
-Object.defineProperties(
-  globalScope["i16"] = function i16(value) { return value << 16 >> 16; },
-  {
-    "MIN_VALUE": { value: -32768, writable: false },
-    "MAX_VALUE": { value:  32767, writable: false }
-  }
-);
+  Object.defineProperties(
+    globalScope["i16"] = function i16(value) { return value << 16 >> 16; },
+    {
+      "MIN_VALUE": { value: -32768, writable: false },
+      "MAX_VALUE": { value:  32767, writable: false }
+    }
+  );
 
-Object.defineProperties(
-  globalScope["i32"] = globalScope["isize"] = function i32(value) { return value | 0; },
-  {
-    "MIN_VALUE": { value: -2147483648, writable: false },
-    "MAX_VALUE": { value:  2147483647, writable: false }
-  }
-);
+  Object.defineProperties(
+    globalScope["i32"] = globalScope["isize"] = function i32(value) { return value | 0; },
+    {
+      "MIN_VALUE": { value: -2147483648, writable: false },
+      "MAX_VALUE": { value:  2147483647, writable: false }
+    }
+  );
 
-Object.defineProperties(
-  globalScope["u8"] = function u8(value) { return value & 0xff; },
-  {
-    "MIN_VALUE": { value:   0, writable: false },
-    "MAX_VALUE": { value: 255, writable: false }
-  }
-);
+  Object.defineProperties(
+    globalScope["u8"] = function u8(value) { return value & 0xff; },
+    {
+      "MIN_VALUE": { value:   0, writable: false },
+      "MAX_VALUE": { value: 255, writable: false }
+    }
+  );
 
-Object.defineProperties(
-  globalScope["u16"] = function u16(value) { return value & 0xffff; },
-  {
-    "MIN_VALUE": { value:     0, writable: false },
-    "MAX_VALUE": { value: 65535, writable: false }
-  }
-);
+  Object.defineProperties(
+    globalScope["u16"] = function u16(value) { return value & 0xffff; },
+    {
+      "MIN_VALUE": { value:     0, writable: false },
+      "MAX_VALUE": { value: 65535, writable: false }
+    }
+  );
 
-Object.defineProperties(
-  globalScope["u32"] = globalScope["usize"] = function u32(value) { return value >>> 0; },
-  {
-    "MIN_VALUE": { value:          0, writable: false },
-    "MAX_VALUE": { value: 4294967295, writable: false }
-  }
-);
+  Object.defineProperties(
+    globalScope["u32"] = globalScope["usize"] = function u32(value) { return value >>> 0; },
+    {
+      "MIN_VALUE": { value:          0, writable: false },
+      "MAX_VALUE": { value: 4294967295, writable: false }
+    }
+  );
 
-Object.defineProperties(
-  globalScope["bool"] = function bool(value) { return !!value; },
-  {
-    "MIN_VALUE": { value: false, writable: false },
-    "MAX_VALUE": { value: true,  writable: false }
-  }
-);
-
-Object.defineProperties(
-  globalScope["f32"] = function f32(value) { return Math.fround(value); },
-  {
-    "EPSILON":   { value: 1.1920928955078125e-07, writable: false },
-    "MIN_VALUE": { value: 1.4012984643248170e-45, writable: false },
-    "MAX_VALUE": { value: 3.4028234663852886e+38, writable: false },
-    "MIN_NORMAL_VALUE":  { value:  1.1754943508222875e-38, writable: false },
-    "MIN_SAFE_INTEGER":  { value: -16777215, writable: false },
-    "MAX_SAFE_INTEGER":  { value:  16777215, writable: false },
-    "POSITIVE_INFINITY": { value:  Infinity, writable: false },
-    "NEGATIVE_INFINITY": { value: -Infinity, writable: false },
-    "NaN": { value: NaN, writable: false }
-  }
-);
-
-Object.defineProperties(
-  globalScope["f64"] = function f64(value) { return +value; },
-  {
-    "EPSILON":   { value: 2.2204460492503131e-016, writable: false },
-    "MIN_VALUE": { value:                  5e-324, writable: false },
-    "MAX_VALUE": { value: 1.7976931348623157e+308, writable: false },
-    "MIN_NORMAL_VALUE":  { value:  2.2250738585072014e-308, writable: false },
-    "MIN_SAFE_INTEGER":  { value: -9007199254740991, writable: false },
-    "MAX_SAFE_INTEGER":  { value:  9007199254740991, writable: false },
-    "POSITIVE_INFINITY": { value:  Infinity, writable: false },
-    "NEGATIVE_INFINITY": { value: -Infinity, writable: false },
-    "NaN": { value: NaN, writable: false }
-  }
-);
+  Object.defineProperties(
+    globalScope["bool"] = function bool(value) { return !!value; },
+    {
+      "MIN_VALUE": { value: false, writable: false },
+      "MAX_VALUE": { value: true,  writable: false }
+    }
+  );
+
+  Object.defineProperties(
+    globalScope["f32"] = function f32(value) { return Math.fround(value); },
+    {
+      "EPSILON":   { value: 1.1920928955078125e-07, writable: false },
+      "MIN_VALUE": { value: 1.4012984643248170e-45, writable: false },
+      "MAX_VALUE": { value: 3.4028234663852886e+38, writable: false },
+      "MIN_NORMAL_VALUE":  { value:  1.1754943508222875e-38, writable: false },
+      "MIN_SAFE_INTEGER":  { value: -16777215, writable: false },
+      "MAX_SAFE_INTEGER":  { value:  16777215, writable: false },
+      "POSITIVE_INFINITY": { value:  Infinity, writable: false },
+      "NEGATIVE_INFINITY": { value: -Infinity, writable: false },
+      "NaN": { value: NaN, writable: false }
+    }
+  );
+
+  Object.defineProperties(
+    globalScope["f64"] = function f64(value) { return +value; },
+    {
+      "EPSILON":   { value: 2.2204460492503131e-016, writable: false },
+      "MIN_VALUE": { value:                  5e-324, writable: false },
+      "MAX_VALUE": { value: 1.7976931348623157e+308, writable: false },
+      "MIN_NORMAL_VALUE":  { value:  2.2250738585072014e-308, writable: false },
+      "MIN_SAFE_INTEGER":  { value: -9007199254740991, writable: false },
+      "MAX_SAFE_INTEGER":  { value:  9007199254740991, writable: false },
+      "POSITIVE_INFINITY": { value:  Infinity, writable: false },
+      "NEGATIVE_INFINITY": { value: -Infinity, writable: false },
+      "NaN": { value: NaN, writable: false }
+    }
+  );
 
-globalScope["clz"] = Math.clz32;
+  globalScope["clz"] = Math.clz32;
 
-globalScope["ctz"] = function ctz(value) {
-  var c = Math.clz32(value & -value);
-  return value ? 31 - c : c;
-};
+  globalScope["ctz"] = function ctz(value) {
+    var c = Math.clz32(value & -value);
+    return value ? 31 - c : c;
+  };
 
-globalScope["popcnt"] = function popcnt(value) {
-  value -= value >>> 1 & 0x55555555;
-  value = (value & 0x33333333) + (value >>> 2 & 0x33333333);
-  return (((value + (value >>> 4)) & 0x0F0F0F0F) * 0x01010101) >>> 24;
-};
+  globalScope["popcnt"] = function popcnt(value) {
+    value -= value >>> 1 & 0x55555555;
+    value = (value & 0x33333333) + (value >>> 2 & 0x33333333);
+    return (((value + (value >>> 4)) & 0x0F0F0F0F) * 0x01010101) >>> 24;
+  };
 
-globalScope["rotl"] = function rotl(value, shift) {
-  shift &= 31;
-  return (value << shift) | (value >>> (32 - shift));
-};
+  globalScope["rotl"] = function rotl(value, shift) {
+    shift &= 31;
+    return (value << shift) | (value >>> (32 - shift));
+  };
 
-globalScope["rotr"] = function rotr(value, shift) {
-  shift &= 31;
-  return (value >>> shift) | (value << (32 - shift));
-};
+  globalScope["rotr"] = function rotr(value, shift) {
+    shift &= 31;
+    return (value >>> shift) | (value << (32 - shift));
+  };
 
-globalScope["abs"] = Math.abs;
+  globalScope["abs"] = Math.abs;
 
-globalScope["max"] = Math.max;
+  globalScope["max"] = Math.max;
 
-globalScope["min"] = Math.min;
+  globalScope["min"] = Math.min;
 
-globalScope["ceil"] = Math.ceil;
+  globalScope["ceil"] = Math.ceil;
 
-globalScope["floor"] = Math.floor;
+  globalScope["floor"] = Math.floor;
 
-// Adopt code from https://github.com/rfk/wasm-polyfill
-globalScope["nearest"] = function nearest(value) {
-  if (Math.abs(value - Math.trunc(value)) === 0.5) {
-    return 2.0 * Math.round(value * 0.5);
-  }
-  return Math.round(value);
-};
-
-globalScope["select"] = function select(ifTrue, ifFalse, condition) {
-  return condition ? ifTrue : ifFalse;
-};
-
-globalScope["sqrt"] = Math.sqrt;
-
-globalScope["trunc"] = Math.trunc;
-
-globalScope["copysign"] = function copysign(x, y) {
-  return Math.abs(x) * Math.sign(y);
-};
-
-globalScope["bswap"] = function bswap(value) {
-  var a = value >> 8 & 0x00FF00FF;
-  var b = (value & 0x00FF00FF) << 8;
-  value = a | b;
-  a = value >> 16 & 0x0000FFFF;
-  b = (value & 0x0000FFFF) << 16;
-  return a | b;
-};
-
-globalScope["bswap16"] = function bswap16(value) {
-  return ((value << 8) & 0xFF00) | ((value >> 8) & 0x00FF) | (value & 0xFFFF0000);
-};
-
-function UnreachableError() {
-  if (Error.captureStackTrace) {
-    Error.captureStackTrace(this, UnreachableError);
-  } else {
-    this.stack = this.name + ": " + this.message + "\n" + new Error().stack;
-  }
-}
-UnreachableError.prototype = Object.create(Error.prototype);
-UnreachableError.prototype.name = "UnreachableError";
-UnreachableError.prototype.message = "unreachable";
-
-globalScope["unreachable"] = function unreachable() {
-  throw new UnreachableError();
-};
-
-function AssertionError(message) {
-  this.message = message || "assertion failed";
-  if (Error.captureStackTrace) {
-    Error.captureStackTrace(this, AssertionError);
-  } else {
-    this.stack = this.name + ": " + this.message + "\n" + new Error().stack;
-  }
-}
-AssertionError.prototype = Object.create(Error.prototype);
-AssertionError.prototype.name = "AssertionError";
-
-globalScope["assert"] = function assert(isTrueish, message) {
-  if (isTrueish) return isTrueish;
-  throw new AssertionError(message);
-};
-
-globalScope["changetype"] = function changetype(value) {
-  return value;
-};
-
-String["fromCharCodes"] = function fromCharCodes(arr) {
-  const CHUNKSIZE = 1 << 13;
-  const len = arr.length;
-  if (len <= CHUNKSIZE) {
-    return String.fromCharCode.apply(String, arr);
-  }
-  let index = 0;
-  let parts = '';
-  while (index < len) {
-    parts += String.fromCharCode.apply(
-      String,
-      arr.slice(index, Math.min(index + CHUNKSIZE, len))
-    );
-    index += CHUNKSIZE;
-  }
-  return parts;
-};
-
-String["fromCodePoints"] = function fromCodePoints(arr) {
-  const CHUNKSIZE = 1 << 13;
-  const len = arr.length;
-  if (len <= CHUNKSIZE) {
-    return String.fromCodePoint.apply(String, arr);
-  }
-  let index = 0;
-  let parts = '';
-  while (index < len) {
-    parts += String.fromCodePoint.apply(
-      String,
-      arr.slice(index, Math.min(index + CHUNKSIZE, len))
-    );
-    index += CHUNKSIZE;
+  // Adopt code from https://github.com/rfk/wasm-polyfill
+  globalScope["nearest"] = function nearest(value) {
+    if (Math.abs(value - Math.trunc(value)) === 0.5) {
+      return 2.0 * Math.round(value * 0.5);
+    }
+    return Math.round(value);
+  };
+
+  globalScope["select"] = function select(ifTrue, ifFalse, condition) {
+    return condition ? ifTrue : ifFalse;
+  };
+
+  globalScope["sqrt"] = Math.sqrt;
+
+  globalScope["trunc"] = Math.trunc;
+
+  globalScope["copysign"] = function copysign(x, y) {
+    return Math.abs(x) * Math.sign(y);
+  };
+
+  globalScope["bswap"] = function bswap(value) {
+    var a = value >> 8 & 0x00FF00FF;
+    var b = (value & 0x00FF00FF) << 8;
+    value = a | b;
+    a = value >> 16 & 0x0000FFFF;
+    b = (value & 0x0000FFFF) << 16;
+    return a | b;
+  };
+
+  globalScope["bswap16"] = function bswap16(value) {
+    return ((value << 8) & 0xFF00) | ((value >> 8) & 0x00FF) | (value & 0xFFFF0000);
+  };
+
+  function UnreachableError() {
+    if (Error.captureStackTrace) {
+      Error.captureStackTrace(this, UnreachableError);
+    } else {
+      this.stack = this.name + ": " + this.message + "\n" + new Error().stack;
+    }
   }
-  return parts;
-};
-
-if (!String.prototype.at) {
-  Object.defineProperty(String.prototype, "at", {
-    value: function at(index) {
-      return this.charAt(index >= 0 ? index : index + this.length);
-    },
-    configurable: true
-  });
-}
-
-if (!String.prototype.replaceAll) {
-  Object.defineProperty(String.prototype, "replaceAll", {
-    value: function replaceAll(search, replacment) {
-      var res = this.split(search).join(replacment);
-      if (!search.length) res = replacment + res + replacment;
-      return res;
-    },
-    configurable: true
-  });
-}
-
-function defaultComparator(a, b) {
-  if (a === b) {
-    if (a !== 0) return 0;
-    a = 1 / a, b = 1 / b;
-  } else {
-    var nanA = a != a, nanB = b != b;
-    if (nanA | nanB) return nanA - nanB;
-    if (a == null) a = String(a);
-    if (b == null) b = String(b);
+  UnreachableError.prototype = Object.create(Error.prototype);
+  UnreachableError.prototype.name = "UnreachableError";
+  UnreachableError.prototype.message = "unreachable";
+
+  globalScope["unreachable"] = function unreachable() {
+    throw new UnreachableError();
+  };
+
+  function AssertionError(message) {
+    this.message = message || "assertion failed";
+    if (Error.captureStackTrace) {
+      Error.captureStackTrace(this, AssertionError);
+    } else {
+      this.stack = this.name + ": " + this.message + "\n" + new Error().stack;
+    }
   }
-  return a > b ? 1 : -1;
-}
+  AssertionError.prototype = Object.create(Error.prototype);
+  AssertionError.prototype.name = "AssertionError";
+
+  globalScope["assert"] = function assert(isTrueish, message) {
+    if (isTrueish) return isTrueish;
+    throw new AssertionError(message);
+  };
+
+  globalScope["changetype"] = function changetype(value) {
+    return value;
+  };
+
+  String["fromCharCodes"] = function fromCharCodes(arr) {
+    const CHUNKSIZE = 1 << 13;
+    const len = arr.length;
+    if (len <= CHUNKSIZE) {
+      return String.fromCharCode.apply(String, arr);
+    }
+    let index = 0;
+    let parts = '';
+    while (index < len) {
+      parts += String.fromCharCode.apply(
+        String,
+        arr.slice(index, Math.min(index + CHUNKSIZE, len))
+      );
+      index += CHUNKSIZE;
+    }
+    return parts;
+  };
+
+  String["fromCodePoints"] = function fromCodePoints(arr) {
+    const CHUNKSIZE = 1 << 13;
+    const len = arr.length;
+    if (len <= CHUNKSIZE) {
+      return String.fromCodePoint.apply(String, arr);
+    }
+    let index = 0;
+    let parts = '';
+    while (index < len) {
+      parts += String.fromCodePoint.apply(
+        String,
+        arr.slice(index, Math.min(index + CHUNKSIZE, len))
+      );
+      index += CHUNKSIZE;
+    }
+    return parts;
+  };
 
-const arraySort = Array.prototype.sort;
-Array.prototype.sort = function sort(comparator) {
-  return arraySort.call(this, comparator || defaultComparator);
-};
-
-[ Array,
-  Uint8ClampedArray,
-  Uint8Array, Int8Array,
-  Uint16Array, Int16Array,
-  Uint32Array, Int32Array,
-  Float32Array, Float64Array
-].forEach(Ctr => {
-  if (!Ctr.prototype.at) {
-    Object.defineProperty(Ctr.prototype, "at", {
+  if (!String.prototype.at) {
+    Object.defineProperty(String.prototype, "at", {
       value: function at(index) {
-        return this[index >= 0 ? index : index + this.length];
+        return this.charAt(index >= 0 ? index : index + this.length);
       },
       configurable: true
     });
   }
 
-  if (!Ctr.prototype.findLastIndex) {
-    Object.defineProperty(Ctr.prototype, "findLastIndex", {
-      value: function findLastIndex(fn) {
-        for (let i = this.length - 1; i >= 0; --i) {
-          if (fn(this[i], i, this)) return i;
-        }
-        return -1;
+  if (!String.prototype.replaceAll) {
+    Object.defineProperty(String.prototype, "replaceAll", {
+      value: function replaceAll(search, replacment) {
+        var res = this.split(search).join(replacment);
+        if (!search.length) res = replacment + res + replacment;
+        return res;
       },
       configurable: true
     });
   }
-});
-
-globalScope["isInteger"] = Number.isInteger;
-
-globalScope["isFloat"] = function isFloat(arg) {
-  return typeof arg === "number";
-};
-
-globalScope["isNullable"] = function isNullable(arg) {
-  return true;
-};
-
-globalScope["isReference"] = function isReference(arg) {
-  return typeof arg === "object" || typeof arg === "string";
-};
-
-globalScope["isFunction"] = function isFunction(arg) {
-  return typeof arg === "function";
-};
-
-globalScope["isString"] = function isString(arg) {
-  return typeof arg === "string" || arg instanceof String;
-};
-
-globalScope["isArray"] = Array.isArray;
-globalScope["isArrayLike"] = function isArrayLike(expr) {
-  return expr
-    && typeof expr === 'object'
-    && typeof expr.length === 'number'
-    && expr.length >= 0
-    && Math.trunc(expr.length) === expr.length;
-};
-
-globalScope["isDefined"] = function isDefined(expr) {
-  return typeof expr !== "undefined";
-};
-
-globalScope["isConstant"] = function isConstant(expr) {
-  return false;
-};
-
-globalScope["unchecked"] = function unchecked(expr) {
-  return expr;
-};
-
-globalScope["fmod"] = function fmod(x, y) {
-  return x % y;
-};
-
-globalScope["fmodf"] = function fmodf(x, y) {
-  return Math.fround(x % y);
-};
-
-globalScope["JSMath"] = Math;
-
-Object.defineProperties(globalScope["JSMath"], {
-  sincos_sin: { value: 0.0, writable: true },
-  sincos_cos: { value: 0.0, writable: true },
-  signbit: {
-    value: function signbit(x) {
-      F64[0] = x; return Boolean(U64[1] >>> 31);
+
+  function defaultComparator(a, b) {
+    if (a === b) {
+      if (a !== 0) return 0;
+      a = 1 / a, b = 1 / b;
+    } else {
+      var nanA = a != a, nanB = b != b;
+      if (nanA | nanB) return nanA - nanB;
+      if (a == null) a = String(a);
+      if (b == null) b = String(b);
     }
-  },
-  sincos: {
-    value: function sincos(x) {
-      this.sincos_sin = Math.sin(x);
-      this.sincos_cos = Math.cos(x);
+    return a > b ? 1 : -1;
+  }
+
+  const arraySort = Array.prototype.sort;
+  Array.prototype.sort = function sort(comparator) {
+    return arraySort.call(this, comparator || defaultComparator);
+  };
+
+  [ Array,
+    Uint8ClampedArray,
+    Uint8Array, Int8Array,
+    Uint16Array, Int16Array,
+    Uint32Array, Int32Array,
+    Float32Array, Float64Array
+  ].forEach(Ctr => {
+    if (!Ctr.prototype.at) {
+      Object.defineProperty(Ctr.prototype, "at", {
+        value: function at(index) {
+          return this[index >= 0 ? index : index + this.length];
+        },
+        configurable: true
+      });
     }
-  },
-  exp2: {
-    value: function exp2(x) {
-      return Math.pow(2, x);
+
+    if (!Ctr.prototype.findLastIndex) {
+      Object.defineProperty(Ctr.prototype, "findLastIndex", {
+        value: function findLastIndex(fn) {
+          for (let i = this.length - 1; i >= 0; --i) {
+            if (fn(this[i], i, this)) return i;
+          }
+          return -1;
+        },
+        configurable: true
+      });
     }
-  }
-});
+  });
 
-globalScope["unmanaged"] = function() { /* nop */ };
+  globalScope["isInteger"] = Number.isInteger;
+
+  globalScope["isFloat"] = function isFloat(arg) {
+    return typeof arg === "number";
+  };
+
+  globalScope["isNullable"] = function isNullable(arg) {
+    return true;
+  };
+
+  globalScope["isReference"] = function isReference(arg) {
+    return typeof arg === "object" || typeof arg === "string";
+  };
+
+  globalScope["isFunction"] = function isFunction(arg) {
+    return typeof arg === "function";
+  };
+
+  globalScope["isString"] = function isString(arg) {
+    return typeof arg === "string" || arg instanceof String;
+  };
+
+  globalScope["isArray"] = Array.isArray;
+  globalScope["isArrayLike"] = function isArrayLike(expr) {
+    return expr
+      && typeof expr === 'object'
+      && typeof expr.length === 'number'
+      && expr.length >= 0
+      && Math.trunc(expr.length) === expr.length;
+  };
+
+  globalScope["isDefined"] = function isDefined(expr) {
+    return typeof expr !== "undefined";
+  };
+
+  globalScope["isConstant"] = function isConstant(expr) {
+    return false;
+  };
+
+  globalScope["unchecked"] = function unchecked(expr) {
+    return expr;
+  };
+
+  globalScope["fmod"] = function fmod(x, y) {
+    return x % y;
+  };
+
+  globalScope["fmodf"] = function fmodf(x, y) {
+    return Math.fround(x % y);
+  };
+
+  globalScope["JSMath"] = Math;
+
+  Object.defineProperties(globalScope["JSMath"], {
+    sincos_sin: { value: 0.0, writable: true },
+    sincos_cos: { value: 0.0, writable: true },
+    signbit: {
+      value: function signbit(x) {
+        F64[0] = x; return Boolean(U64[1] >>> 31);
+      }
+    },
+    sincos: {
+      value: function sincos(x) {
+        this.sincos_sin = Math.sin(x);
+        this.sincos_cos = Math.cos(x);
+      }
+    },
+    exp2: {
+      value: function exp2(x) {
+        return Math.pow(2, x);
+      }
+    }
+  });
 
-globalScope["trace"] = function(message, n) {
-  if (n) message += Array.prototype.slice.call(arguments, 2, 2 + n);
-  console.error("trace: " + message);
-};
+  globalScope["unmanaged"] = function() { /* nop */ };
 
-Object.defineProperty(Int8Array, "wrap", {
-  value: function wrap(buffer, byteOffset, length) {
-    return new Int8Array(buffer, byteOffset, length);
-  }
-});
+  globalScope["trace"] = function(message, n) {
+    if (n) message += Array.prototype.slice.call(arguments, 2, 2 + n);
+    console.error("trace: " + message);
+  };
 
-Object.defineProperty(Uint8Array, "wrap", {
-  value: function wrap(buffer, byteOffset, length) {
-    return new Uint8Array(buffer, byteOffset, length);
-  }
-});
+  Object.defineProperty(Int8Array, "wrap", {
+    value: function wrap(buffer, byteOffset, length) {
+      return new Int8Array(buffer, byteOffset, length);
+    }
+  });
 
-Object.defineProperty(Uint8ClampedArray, "wrap", {
-  value: function wrap(buffer, byteOffset, length) {
-    return new Uint8ClampedArray(buffer, byteOffset, length);
-  }
-});
+  Object.defineProperty(Uint8Array, "wrap", {
+    value: function wrap(buffer, byteOffset, length) {
+      return new Uint8Array(buffer, byteOffset, length);
+    }
+  });
 
-Object.defineProperty(Int16Array, "wrap", {
-  value: function wrap(buffer, byteOffset, length) {
-    return new Int16Array(buffer, byteOffset, length);
-  }
-});
+  Object.defineProperty(Uint8ClampedArray, "wrap", {
+    value: function wrap(buffer, byteOffset, length) {
+      return new Uint8ClampedArray(buffer, byteOffset, length);
+    }
+  });
 
-Object.defineProperty(Uint16Array, "wrap", {
-  value: function wrap(buffer, byteOffset, length) {
-    return new Uint16Array(buffer, byteOffset, length);
-  }
-});
+  Object.defineProperty(Int16Array, "wrap", {
+    value: function wrap(buffer, byteOffset, length) {
+      return new Int16Array(buffer, byteOffset, length);
+    }
+  });
 
-Object.defineProperty(Int32Array, "wrap", {
-  value: function wrap(buffer, byteOffset, length) {
-    return new Int32Array(buffer, byteOffset, length);
-  }
-});
+  Object.defineProperty(Uint16Array, "wrap", {
+    value: function wrap(buffer, byteOffset, length) {
+      return new Uint16Array(buffer, byteOffset, length);
+    }
+  });
 
-Object.defineProperty(Uint32Array, "wrap", {
-  value: function wrap(buffer, byteOffset, length) {
-    return new Uint32Array(buffer, byteOffset, length);
-  }
-});
+  Object.defineProperty(Int32Array, "wrap", {
+    value: function wrap(buffer, byteOffset, length) {
+      return new Int32Array(buffer, byteOffset, length);
+    }
+  });
 
-Object.defineProperty(Float32Array, "wrap", {
-  value: function wrap(buffer, byteOffset, length) {
-    return new Float32Array(buffer, byteOffset, length);
-  }
-});
+  Object.defineProperty(Uint32Array, "wrap", {
+    value: function wrap(buffer, byteOffset, length) {
+      return new Uint32Array(buffer, byteOffset, length);
+    }
+  });
 
-Object.defineProperty(Float64Array, "wrap", {
-  value: function wrap(buffer, byteOffset, length) {
-    return new Float64Array(buffer, byteOffset, length);
-  }
-});
+  Object.defineProperty(Float32Array, "wrap", {
+    value: function wrap(buffer, byteOffset, length) {
+      return new Float32Array(buffer, byteOffset, length);
+    }
+  });
+
+  Object.defineProperty(Float64Array, "wrap", {
+    value: function wrap(buffer, byteOffset, length) {
+      return new Float64Array(buffer, byteOffset, length);
+    }
+  });
+} else {
+  console.warn("compiler mismatch: std/portable included twice");
+}