@petamoriken/float16 - npm Package Compare versions

Comparing version 3.5.3 to 3.5.4

browser/float16.js

@@ -1,2 +0,2 @@
-/*! @petamoriken/float16 v3.5.3 | MIT License - https://git.io/float16 */
+/*! @petamoriken/float16 v3.5.4 | MIT License - https://git.io/float16 */
 
@@ -7,2 +7,3 @@ const float16 = (function (exports) {
   /* eslint-disable no-restricted-globals */
+  /* global SharedArrayBuffer */
 
@@ -85,3 +86,16 @@ const { bind, call } = Function.prototype;
   const NativeArrayBuffer = ArrayBuffer;
+  /** @type {(buffer: ArrayBuffer, begin: number, end?: number) => number} */
+  const ArrayBufferPrototypeSlice = uncurryThis(NativeArrayBuffer.prototype.slice);
+  /** @type {(buffer: ArrayBuffer) => ArrayBuffer} */
+  const ArrayBufferPrototypeGetByteLength = uncurryThisGetter(NativeArrayBuffer.prototype, "byteLength");
 
+  // SharedArrayBuffer
+  const NativeSharedArrayBuffer = typeof SharedArrayBuffer !== "undefined" ? SharedArrayBuffer : null;
+  /** @type {(buffer: SharedArrayBuffer, begin: number, end?: number) => number} */
+  const SharedArrayBufferPrototypeSlice = NativeSharedArrayBuffer
+    && uncurryThis(NativeSharedArrayBuffer.prototype.slice);
+  /** @type {(buffer: SharedArrayBuffer) => SharedArrayBuffer} */
+  const SharedArrayBufferPrototypeGetByteLength = NativeSharedArrayBuffer
+    && uncurryThisGetter(NativeSharedArrayBuffer.prototype, "byteLength");
+
   // TypedArray
@@ -323,2 +337,3 @@ /** @typedef {Uint8Array|Uint8ClampedArray|Uint16Array|Uint32Array|Int8Array|Int16Array|Int32Array|Float32Array|Float64Array|BigUint64Array|BigInt64Array} TypedArray */
     "Derived TypedArray constructor created an array which was too small";
+  const THIS_BUFFER_HAS_ALREADY_BEEN_DETACHED = "This buffer has already been detached";
   const CANNOT_CONVERT_UNDEFINED_OR_NULL_TO_OBJECT =
@@ -426,3 +441,8 @@ "Cannot convert undefined or null to object";
   function isArrayBuffer(value) {
-    return isObjectLike(value) && value[SymbolToStringTag] === "ArrayBuffer";
+    try {
+      ArrayBufferPrototypeGetByteLength(/** @type {any} */ (value));
+      return true;
+    } catch (e) {
+      return false;
+    }
   }
@@ -435,4 +455,12 @@
   function isSharedArrayBuffer(value) {
-    return isObjectLike(value) &&
-      value[SymbolToStringTag] === "SharedArrayBuffer";
+    if (NativeSharedArrayBuffer === null) {
+      return false;
+    }
+
+    try {
+      SharedArrayBufferPrototypeGetByteLength(/** @type {any} */ (value));
+      return true;
+    } catch (e) {
+      return false;
+    }
   }
@@ -584,2 +612,23 @@
   /**
+   * @see https://tc39.es/ecma262/#sec-isdetachedbuffer
+   * @param {ArrayBuffer | SharedArrayBuffer} buffer
+   * @returns {boolean}
+   */
+  function IsDetachedBuffer(buffer) {
+    try {
+      ArrayBufferPrototypeSlice(buffer, 0, 0);
+      return false;
+    } catch (e) {/* empty */}
+
+    if (NativeSharedArrayBuffer !== null) {
+      try {
+        SharedArrayBufferPrototypeSlice(/** @type {SharedArrayBuffer} */ (buffer), 0, 0);
+        return false;
+      } catch (e) {/* empty */}
+    }
+
+    return true;
+  }
+
+  /**
    * bigint comparisons are not supported
@@ -637,3 +686,3 @@ *
   /** @type {WeakMap<Float16Array, Uint16Array & { __float16bits: never }>} */
-  const targets = new NativeWeakMap();
+  const float16bitsArrays = new NativeWeakMap();
 
@@ -725,7 +774,16 @@ /**
   function getFloat16BitsArray(float16) {
-    const target = WeakMapPrototypeGet(targets, float16);
-    if (target !== undefined) {
-      return target;
+    const float16bitsArray = WeakMapPrototypeGet(float16bitsArrays, float16);
+    if (float16bitsArray !== undefined) {
+      const buffer = TypedArrayPrototypeGetBuffer(float16bitsArray);
+      if (IsDetachedBuffer(buffer)) {
+        throw NativeTypeError(THIS_BUFFER_HAS_ALREADY_BEEN_DETACHED);
+      }
+      return float16bitsArray;
     }
 
+    // @ts-ignore
+    if (IsDetachedBuffer(float16.buffer)) {
+      throw NativeTypeError(THIS_BUFFER_HAS_ALREADY_BEEN_DETACHED);
+    }
+
     // from another Float16Array instance (a different version?)
@@ -740,3 +798,3 @@ const cloned = ReflectConstruct(Float16Array, [
     ], float16.constructor);
-    return WeakMapPrototypeGet(targets, cloned);
+    return WeakMapPrototypeGet(float16bitsArrays, cloned);
   }
@@ -812,8 +870,2 @@
         if (isTypedArray(input)) { // TypedArray
-          if (isBigIntTypedArray(input)) {
-            throw NativeTypeError(
-              CANNOT_MIX_BIGINT_AND_OTHER_TYPES
-            );
-          }
-
           list = input;
@@ -829,2 +881,11 @@ length = TypedArrayPrototypeGetLength(input);
             : NativeArrayBuffer;
+
+          if (IsDetachedBuffer(buffer)) {
+            throw NativeTypeError(THIS_BUFFER_HAS_ALREADY_BEEN_DETACHED);
+          }
+
+          if (isBigIntTypedArray(input)) {
+            throw NativeTypeError(CANNOT_MIX_BIGINT_AND_OTHER_TYPES);
+          }
+
           const data = new BufferConstructor(
@@ -862,3 +923,3 @@ length * BYTES_PER_ELEMENT
       // proxy private storage
-      WeakMapPrototypeSet(targets, proxy, float16bitsArray);
+      WeakMapPrototypeSet(float16bitsArrays, proxy, float16bitsArray);
 
@@ -1334,2 +1395,9 @@ return proxy;
 
+      if (isTypedArray(input)) {
+        const buffer = TypedArrayPrototypeGetBuffer(input);
+        if (IsDetachedBuffer(buffer)) {
+          throw NativeTypeError(THIS_BUFFER_HAS_ALREADY_BEEN_DETACHED);
+        }
+      }
+
       const targetLength = TypedArrayPrototypeGetLength(float16bitsArray);
@@ -1447,2 +1515,7 @@
 
+      const buffer = TypedArrayPrototypeGetBuffer(float16bitsArray);
+      if (IsDetachedBuffer(buffer)) {
+        throw NativeTypeError(THIS_BUFFER_HAS_ALREADY_BEEN_DETACHED);
+      }
+
       let n = 0;
@@ -1449,0 +1522,0 @@ while (k < final) {

package.json

 {
   "name": "@petamoriken/float16",
-  "version": "3.5.3",
+  "version": "3.5.4",
   "description": "half precision floating point for JavaScript",
@@ -5,0 +5,0 @@ "keywords": [

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Improved metrics

Total package byte prevSize

241757

increased by4.9%

Lines of code

6355

increased by4.54%

No dependency changes