Update TypedArray and DataView externs to support BigInt

PiperOrigin-RevId: 325246846

Author: JohnLuck77

externs/es6.js

@@ -992,6 +992,71 @@ Float64Array.from = function(source, opt_mapFn, opt_this) {};
 Float64Array.of = function(var_args) {};
 
 
+/**
+ * @param {number|ArrayBufferView|Array<bigint>|ArrayBuffer|SharedArrayBuffer}
+ *     lengthOrArrayOrBuffer
+ * @param {number=} byteOffset
+ * @param {number=} bufferLength
+ * @constructor
+ * @extends {TypedArray}
+ * @throws {Error}
+ * @modifies {arguments}
+ */
+function BigInt64Array(lengthOrArrayOrBuffer, byteOffset, bufferLength) {}
+
+/** @const {number} */
+BigInt64Array.BYTES_PER_ELEMENT;
+
+/**
+ * @param {string|!IArrayLike<bigint>|!Iterable<bigint>} source
+ * @param {function(this:S, bigint): bigint=} mapFn
+ * @param {S=} thisArg
+ * @template S
+ * @return {!BigInt64Array}
+ * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/from
+ */
+BigInt64Array.from = function(source, mapFn, thisArg) {};
+
+/**
+ * @param {...bigint} var_args
+ * @return {!BigInt64Array}
+ * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/of
+ */
+BigInt64Array.of = function(var_args) {};
+
+
+/**
+ * @param {number|ArrayBufferView|Array<bigint>|ArrayBuffer|SharedArrayBuffer}
+ *     lengthOrArrayOrBuffer
+ * @param {number=} byteOffset
+ * @param {number=} bufferLength
+ * @constructor
+ * @extends {TypedArray}
+ * @throws {Error}
+ * @modifies {arguments}
+ */
+function BigUint64Array(lengthOrArrayOrBuffer, byteOffset, bufferLength) {}
+
+/** @const {number} */
+BigUint64Array.BYTES_PER_ELEMENT;
+
+/**
+ * @param {string|!IArrayLike<bigint>|!Iterable<bigint>} source
+ * @param {function(this:S, bigint): bigint=} mapFn
+ * @param {S=} thisArg
+ * @template S
+ * @return {!BigUint64Array}
+ * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/from
+ */
+BigUint64Array.from = function(source, mapFn, thisArg) {};
+
+/**
+ * @param {...bigint} var_args
+ * @return {!BigUint64Array}
+ * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/of
+ */
+BigUint64Array.of = function(var_args) {};
+
 /**
  * @param {ArrayBuffer|SharedArrayBuffer} buffer
  * @param {number=} opt_byteOffset
@@ -1065,6 +1130,22 @@ DataView.prototype.getFloat32 = function(byteOffset, opt_littleEndian) {};
  */
 DataView.prototype.getFloat64 = function(byteOffset, opt_littleEndian) {};
 
+/**
+ * @param {number} byteOffset
+ * @param {boolean=} littleEndian
+ * @return {bigint}
+ * @throws {Error}
+ */
+DataView.prototype.getBigInt64 = function(byteOffset, littleEndian) {};
+
+/**
+ * @param {number} byteOffset
+ * @param {boolean=} littleEndian
+ * @return {bigint}
+ * @throws {Error}
+ */
+DataView.prototype.getBigUint64 = function(byteOffset, littleEndian) {};
+
 /**
  * @param {number} byteOffset
  * @param {number} value
@@ -1137,6 +1218,24 @@ DataView.prototype.setFloat32 = function(
 DataView.prototype.setFloat64 = function(
     byteOffset, value, opt_littleEndian) {};
 
+/**
+ * @param {number} byteOffset
+ * @param {number} value
+ * @param {boolean=} littleEndian
+ * @throws {Error}
+ * @return {undefined}
+ */
+DataView.prototype.setBigInt64 = function(byteOffset, value, littleEndian) {};
+
+/**
+ * @param {number} byteOffset
+ * @param {number} value
+ * @param {boolean=} littleEndian
+ * @throws {Error}
+ * @return {undefined}
+ */
+DataView.prototype.setBigUint64 = function(byteOffset, value, littleEndian) {};
+
 
 /**
  * @see https://github.com/promises-aplus/promises-spec