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Add generic <TArrayBuffer> overloads to TypedArray constructors (#61680) #65376

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9 changes: 9 additions & 0 deletions tsc/internal/bundled/libs/lib.es2015.iterable.d.ts
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Expand Up @@ -290,6 +290,7 @@ interface Int8Array<TArrayBuffer extends ArrayBufferLike> {

interface Int8ArrayConstructor {
new (elements: Iterable<number>): Int8Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(elements: Iterable<number>): Int8Array<TArrayBuffer>;

/**
* Creates an array from an array-like or iterable object.
Expand Down Expand Up @@ -327,6 +328,7 @@ interface Uint8Array<TArrayBuffer extends ArrayBufferLike> {

interface Uint8ArrayConstructor {
new (elements: Iterable<number>): Uint8Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(elements: Iterable<number>): Uint8Array<TArrayBuffer>;

/**
* Creates an array from an array-like or iterable object.
Expand Down Expand Up @@ -364,6 +366,7 @@ interface Uint8ClampedArray<TArrayBuffer extends ArrayBufferLike> {

interface Uint8ClampedArrayConstructor {
new (elements: Iterable<number>): Uint8ClampedArray<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(elements: Iterable<number>): Uint8ClampedArray<TArrayBuffer>;

/**
* Creates an array from an array-like or iterable object.
Expand Down Expand Up @@ -400,6 +403,7 @@ interface Int16Array<TArrayBuffer extends ArrayBufferLike> {

interface Int16ArrayConstructor {
new (elements: Iterable<number>): Int16Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(elements: Iterable<number>): Int16Array<TArrayBuffer>;

/**
* Creates an array from an array-like or iterable object.
Expand Down Expand Up @@ -437,6 +441,7 @@ interface Uint16Array<TArrayBuffer extends ArrayBufferLike> {

interface Uint16ArrayConstructor {
new (elements: Iterable<number>): Uint16Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(elements: Iterable<number>): Uint16Array<TArrayBuffer>;

/**
* Creates an array from an array-like or iterable object.
Expand Down Expand Up @@ -474,6 +479,7 @@ interface Int32Array<TArrayBuffer extends ArrayBufferLike> {

interface Int32ArrayConstructor {
new (elements: Iterable<number>): Int32Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(elements: Iterable<number>): Int32Array<TArrayBuffer>;

/**
* Creates an array from an array-like or iterable object.
Expand Down Expand Up @@ -511,6 +517,7 @@ interface Uint32Array<TArrayBuffer extends ArrayBufferLike> {

interface Uint32ArrayConstructor {
new (elements: Iterable<number>): Uint32Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(elements: Iterable<number>): Uint32Array<TArrayBuffer>;

/**
* Creates an array from an array-like or iterable object.
Expand Down Expand Up @@ -548,6 +555,7 @@ interface Float32Array<TArrayBuffer extends ArrayBufferLike> {

interface Float32ArrayConstructor {
new (elements: Iterable<number>): Float32Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(elements: Iterable<number>): Float32Array<TArrayBuffer>;

/**
* Creates an array from an array-like or iterable object.
Expand Down Expand Up @@ -585,6 +593,7 @@ interface Float64Array<TArrayBuffer extends ArrayBufferLike> {

interface Float64ArrayConstructor {
new (elements: Iterable<number>): Float64Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(elements: Iterable<number>): Float64Array<TArrayBuffer>;

/**
* Creates an array from an array-like or iterable object.
Expand Down
9 changes: 9 additions & 0 deletions tsc/internal/bundled/libs/lib.es2017.typedarrays.d.ts
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Expand Up @@ -15,36 +15,45 @@ and limitations under the License.

interface Int8ArrayConstructor {
new (): Int8Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(): Int8Array<TArrayBuffer>;
}

interface Uint8ArrayConstructor {
new (): Uint8Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(): Uint8Array<TArrayBuffer>;
}

interface Uint8ClampedArrayConstructor {
new (): Uint8ClampedArray<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(): Uint8ClampedArray<TArrayBuffer>;
}

interface Int16ArrayConstructor {
new (): Int16Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(): Int16Array<TArrayBuffer>;
}

interface Uint16ArrayConstructor {
new (): Uint16Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(): Uint16Array<TArrayBuffer>;
}

interface Int32ArrayConstructor {
new (): Int32Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(): Int32Array<TArrayBuffer>;
}

interface Uint32ArrayConstructor {
new (): Uint32Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(): Uint32Array<TArrayBuffer>;
}

interface Float32ArrayConstructor {
new (): Float32Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(): Float32Array<TArrayBuffer>;
}

interface Float64ArrayConstructor {
new (): Float64Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(): Float64Array<TArrayBuffer>;
}
6 changes: 6 additions & 0 deletions tsc/internal/bundled/libs/lib.es2020.bigint.d.ts
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Expand Up @@ -390,6 +390,9 @@ interface BigInt64ArrayConstructor {
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(buffer: TArrayBuffer, byteOffset?: number, length?: number): BigInt64Array<TArrayBuffer>;
new (buffer: ArrayBuffer, byteOffset?: number, length?: number): BigInt64Array<ArrayBuffer>;
new (array: ArrayLike<bigint> | ArrayBuffer): BigInt64Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(length?: number): BigInt64Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<bigint> | Iterable<bigint>): BigInt64Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<bigint> | ArrayBuffer): BigInt64Array<TArrayBuffer>;

/** The size in bytes of each element in the array. */
readonly BYTES_PER_ELEMENT: number;
Expand Down Expand Up @@ -681,6 +684,9 @@ interface BigUint64ArrayConstructor {
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(buffer: TArrayBuffer, byteOffset?: number, length?: number): BigUint64Array<TArrayBuffer>;
new (buffer: ArrayBuffer, byteOffset?: number, length?: number): BigUint64Array<ArrayBuffer>;
new (array: ArrayLike<bigint> | ArrayBuffer): BigUint64Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(length?: number): BigUint64Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<bigint> | Iterable<bigint>): BigUint64Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<bigint> | ArrayBuffer): BigUint64Array<TArrayBuffer>;

/** The size in bytes of each element in the array. */
readonly BYTES_PER_ELEMENT: number;
Expand Down
3 changes: 3 additions & 0 deletions tsc/internal/bundled/libs/lib.es2025.float16.d.ts
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Expand Up @@ -373,6 +373,9 @@ interface Float16ArrayConstructor {
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(buffer: TArrayBuffer, byteOffset?: number, length?: number): Float16Array<TArrayBuffer>;
new (buffer: ArrayBuffer, byteOffset?: number, length?: number): Float16Array<ArrayBuffer>;
new (array: ArrayLike<number> | ArrayBuffer): Float16Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(length?: number): Float16Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number> | Iterable<number>): Float16Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number> | ArrayBuffer): Float16Array<TArrayBuffer>;

/**
* The size in bytes of each element in the array.
Expand Down
27 changes: 27 additions & 0 deletions tsc/internal/bundled/libs/lib.es5.d.ts
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Expand Up @@ -2127,6 +2127,9 @@ interface Int8ArrayConstructor {
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(buffer: TArrayBuffer, byteOffset?: number, length?: number): Int8Array<TArrayBuffer>;
new (buffer: ArrayBuffer, byteOffset?: number, length?: number): Int8Array<ArrayBuffer>;
new (array: ArrayLike<number> | ArrayBuffer): Int8Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(length: number): Int8Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number>): Int8Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number> | ArrayBuffer): Int8Array<TArrayBuffer>;

/**
* The size in bytes of each element in the array.
Expand Down Expand Up @@ -2409,6 +2412,9 @@ interface Uint8ArrayConstructor {
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(buffer: TArrayBuffer, byteOffset?: number, length?: number): Uint8Array<TArrayBuffer>;
new (buffer: ArrayBuffer, byteOffset?: number, length?: number): Uint8Array<ArrayBuffer>;
new (array: ArrayLike<number> | ArrayBuffer): Uint8Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(length: number): Uint8Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number>): Uint8Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number> | ArrayBuffer): Uint8Array<TArrayBuffer>;

/**
* The size in bytes of each element in the array.
Expand Down Expand Up @@ -2691,6 +2697,9 @@ interface Uint8ClampedArrayConstructor {
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(buffer: TArrayBuffer, byteOffset?: number, length?: number): Uint8ClampedArray<TArrayBuffer>;
new (buffer: ArrayBuffer, byteOffset?: number, length?: number): Uint8ClampedArray<ArrayBuffer>;
new (array: ArrayLike<number> | ArrayBuffer): Uint8ClampedArray<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(length: number): Uint8ClampedArray<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number>): Uint8ClampedArray<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number> | ArrayBuffer): Uint8ClampedArray<TArrayBuffer>;

/**
* The size in bytes of each element in the array.
Expand Down Expand Up @@ -2972,6 +2981,9 @@ interface Int16ArrayConstructor {
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(buffer: TArrayBuffer, byteOffset?: number, length?: number): Int16Array<TArrayBuffer>;
new (buffer: ArrayBuffer, byteOffset?: number, length?: number): Int16Array<ArrayBuffer>;
new (array: ArrayLike<number> | ArrayBuffer): Int16Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(length: number): Int16Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number>): Int16Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number> | ArrayBuffer): Int16Array<TArrayBuffer>;

/**
* The size in bytes of each element in the array.
Expand Down Expand Up @@ -3254,6 +3266,9 @@ interface Uint16ArrayConstructor {
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(buffer: TArrayBuffer, byteOffset?: number, length?: number): Uint16Array<TArrayBuffer>;
new (buffer: ArrayBuffer, byteOffset?: number, length?: number): Uint16Array<ArrayBuffer>;
new (array: ArrayLike<number> | ArrayBuffer): Uint16Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(length: number): Uint16Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number>): Uint16Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number> | ArrayBuffer): Uint16Array<TArrayBuffer>;

/**
* The size in bytes of each element in the array.
Expand Down Expand Up @@ -3535,6 +3550,9 @@ interface Int32ArrayConstructor {
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(buffer: TArrayBuffer, byteOffset?: number, length?: number): Int32Array<TArrayBuffer>;
new (buffer: ArrayBuffer, byteOffset?: number, length?: number): Int32Array<ArrayBuffer>;
new (array: ArrayLike<number> | ArrayBuffer): Int32Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(length: number): Int32Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number>): Int32Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number> | ArrayBuffer): Int32Array<TArrayBuffer>;

/**
* The size in bytes of each element in the array.
Expand Down Expand Up @@ -3816,6 +3834,9 @@ interface Uint32ArrayConstructor {
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(buffer: TArrayBuffer, byteOffset?: number, length?: number): Uint32Array<TArrayBuffer>;
new (buffer: ArrayBuffer, byteOffset?: number, length?: number): Uint32Array<ArrayBuffer>;
new (array: ArrayLike<number> | ArrayBuffer): Uint32Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(length: number): Uint32Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number>): Uint32Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number> | ArrayBuffer): Uint32Array<TArrayBuffer>;

/**
* The size in bytes of each element in the array.
Expand Down Expand Up @@ -4098,6 +4119,9 @@ interface Float32ArrayConstructor {
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(buffer: TArrayBuffer, byteOffset?: number, length?: number): Float32Array<TArrayBuffer>;
new (buffer: ArrayBuffer, byteOffset?: number, length?: number): Float32Array<ArrayBuffer>;
new (array: ArrayLike<number> | ArrayBuffer): Float32Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(length: number): Float32Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number>): Float32Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number> | ArrayBuffer): Float32Array<TArrayBuffer>;

/**
* The size in bytes of each element in the array.
Expand Down Expand Up @@ -4380,6 +4404,9 @@ interface Float64ArrayConstructor {
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(buffer: TArrayBuffer, byteOffset?: number, length?: number): Float64Array<TArrayBuffer>;
new (buffer: ArrayBuffer, byteOffset?: number, length?: number): Float64Array<ArrayBuffer>;
new (array: ArrayLike<number> | ArrayBuffer): Float64Array<ArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(length: number): Float64Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number>): Float64Array<TArrayBuffer>;
new <TArrayBuffer extends ArrayBufferLike = ArrayBuffer>(array: ArrayLike<number> | ArrayBuffer): Float64Array<TArrayBuffer>;

/**
* The size in bytes of each element in the array.
Expand Down
126 changes: 126 additions & 0 deletions tsc/testdata/tests/cases/compiler/typedArrayConstructorOverloads.ts
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Expand Up @@ -22,3 +22,129 @@ export function makeTypedArray(buffer: ArrayBuffer, ctr: TypedArrayConstructor)
new ctr(buffer);
new ctr(buffer, 0, 0);
}

// https://github.com/microsoft/TypeScript/issues/61680

export function makeGenericTypedArrays(
numIterable: Iterable<number>,
numUnion: ArrayLike<number> | ArrayBuffer,
bigintIterable: Iterable<bigint>,
bigintUnion: ArrayLike<bigint> | ArrayBuffer,
) {
const source = new Uint8Array(10);
const copy1: Uint8Array<ArrayBuffer> = new Uint8Array(source);
const copy2: Uint8Array<ArrayBufferLike> = new Uint8Array<ArrayBufferLike>(source);
const copy3: Uint8Array<ArrayBuffer> = new Uint8Array<ArrayBuffer>(source);

new Int8Array<ArrayBufferLike>();
new Int8Array<ArrayBufferLike>(10);
new Int8Array<ArrayBufferLike>(source);
new Int8Array<ArrayBufferLike>(numIterable);
new Int8Array<ArrayBufferLike>(numUnion);

new Uint8Array<ArrayBufferLike>();
new Uint8Array<ArrayBufferLike>(10);
new Uint8Array<ArrayBufferLike>(source);
new Uint8Array<ArrayBufferLike>(numIterable);
new Uint8Array<ArrayBufferLike>(numUnion);

new Uint8ClampedArray<ArrayBufferLike>();
new Uint8ClampedArray<ArrayBufferLike>(10);
new Uint8ClampedArray<ArrayBufferLike>(source);
new Uint8ClampedArray<ArrayBufferLike>(numIterable);
new Uint8ClampedArray<ArrayBufferLike>(numUnion);

new Int16Array<ArrayBufferLike>();
new Int16Array<ArrayBufferLike>(10);
new Int16Array<ArrayBufferLike>(source);
new Int16Array<ArrayBufferLike>(numIterable);
new Int16Array<ArrayBufferLike>(numUnion);

new Uint16Array<ArrayBufferLike>();
new Uint16Array<ArrayBufferLike>(10);
new Uint16Array<ArrayBufferLike>(source);
new Uint16Array<ArrayBufferLike>(numIterable);
new Uint16Array<ArrayBufferLike>(numUnion);

new Int32Array<ArrayBufferLike>();
new Int32Array<ArrayBufferLike>(10);
new Int32Array<ArrayBufferLike>(source);
new Int32Array<ArrayBufferLike>(numIterable);
new Int32Array<ArrayBufferLike>(numUnion);

new Uint32Array<ArrayBufferLike>();
new Uint32Array<ArrayBufferLike>(10);
new Uint32Array<ArrayBufferLike>(source);
new Uint32Array<ArrayBufferLike>(numIterable);
new Uint32Array<ArrayBufferLike>(numUnion);

new Float16Array<ArrayBufferLike>();
new Float16Array<ArrayBufferLike>(10);
new Float16Array<ArrayBufferLike>(source);
new Float16Array<ArrayBufferLike>(numIterable);
new Float16Array<ArrayBufferLike>(numUnion);

new Float32Array<ArrayBufferLike>();
new Float32Array<ArrayBufferLike>(10);
new Float32Array<ArrayBufferLike>(source);
new Float32Array<ArrayBufferLike>(numIterable);
new Float32Array<ArrayBufferLike>(numUnion);

new Float64Array<ArrayBufferLike>();
new Float64Array<ArrayBufferLike>(10);
new Float64Array<ArrayBufferLike>(source);
new Float64Array<ArrayBufferLike>(numIterable);
new Float64Array<ArrayBufferLike>(numUnion);

const bigintSource = new BigInt64Array(10);
new BigInt64Array<ArrayBufferLike>();
new BigInt64Array<ArrayBufferLike>(10);
new BigInt64Array<ArrayBufferLike>(bigintSource);
new BigInt64Array<ArrayBufferLike>(bigintIterable);
new BigInt64Array<ArrayBufferLike>(bigintUnion);

new BigUint64Array<ArrayBufferLike>();
new BigUint64Array<ArrayBufferLike>(10);
new BigUint64Array<ArrayBufferLike>(bigintSource);
new BigUint64Array<ArrayBufferLike>(bigintIterable);
new BigUint64Array<ArrayBufferLike>(bigintUnion);
}

export class EncodedString extends Uint8Array<ArrayBufferLike> {
static encode(value: string): Uint8Array<ArrayBuffer> {
return new Uint8Array(value.length);
}

constructor(value: string);
constructor(value: ArrayBufferLike, byteOffset?: number, byteLength?: number);
constructor(value: string | ArrayBufferLike, byteOffset?: number, byteLength?: number) {
if (typeof value === "string") {
const encoded = EncodedString.encode(value);
super(encoded);
}
else {
super(value, byteOffset, byteLength);
}
}
}

export class GenericSubUint8Array<TArrayBuffer extends ArrayBufferLike = ArrayBufferLike> extends Uint8Array<TArrayBuffer> {
constructor(value?: number | ArrayLike<number> | Iterable<number> | TArrayBuffer) {
if (value === undefined) {
super();
}
else if (typeof value === "number") {
super(value);
}
else if ("maxByteLength" in value) {
super(value);
}
else if (Symbol.iterator in value) {
super(value);
}
else {
super(value);
}
}
}