polyfill.ts

// FIXME: Remove polyfills when Expo SDK 51 drops which has TextEncoder and TextDecoder built-in
// https://discord.com/channels/795981131316985866/1151827019684905000/1233104222954852454
(function (window) {
	"use strict";
	var log = Math.log;
	var LN2 = Math.LN2;
	var clz32 =
		Math.clz32 ||
		function (x) {
			return (31 - log(x >>> 0) / LN2) | 0;
		};
	var fromCharCode = String.fromCharCode;
	var Object_prototype_toString = {}.toString;
	var NativeSharedArrayBuffer = window["SharedArrayBuffer"];
	var sharedArrayBufferString = NativeSharedArrayBuffer
		? Object_prototype_toString.call(NativeSharedArrayBuffer)
		: "";
	var NativeUint8Array = window.Uint8Array;
	var patchedU8Array = NativeUint8Array || Array;
	var arrayBufferString = Object_prototype_toString.call(
		(NativeUint8Array ? ArrayBuffer : patchedU8Array).prototype,
	);
	function decoderReplacer(encoded) {
		var cp0 = encoded.charCodeAt(0),
			codePoint = 0x110000,
			i = 0,
			stringLen = encoded.length | 0,
			result = "";
		switch (cp0 >>> 4) {
			// no 1 byte sequences
			case 12:
			case 13:
				codePoint = ((cp0 & 0x1f) << 6) | (encoded.charCodeAt(1) & 0x3f);
				i = codePoint < 0x80 ? 0 : 2;
				break;
			case 14:
				codePoint =
					((cp0 & 0x0f) << 12) |
					((encoded.charCodeAt(1) & 0x3f) << 6) |
					(encoded.charCodeAt(2) & 0x3f);
				i = codePoint < 0x800 ? 0 : 3;
				break;
			case 15:
				if (cp0 >>> 3 === 30) {
					codePoint =
						((cp0 & 0x07) << 18) |
						((encoded.charCodeAt(1) & 0x3f) << 12) |
						((encoded.charCodeAt(2) & 0x3f) << 6) |
						encoded.charCodeAt(3);
					i = codePoint < 0x10000 ? 0 : 4;
				}
		}
		if (i) {
			if (stringLen < i) {
				i = 0;
			} else if (codePoint < 0x10000) {
				// BMP code point
				result = fromCharCode(codePoint);
			} else if (codePoint < 0x110000) {
				codePoint = (codePoint - 0x10080) | 0; //- 0x10000|0;
				result = fromCharCode(
					((codePoint >>> 10) + 0xd800) | 0, // highSurrogate
					((codePoint & 0x3ff) + 0xdc00) | 0, // lowSurrogate
				);
			} else i = 0; // to fill it in with INVALIDs
		}

		for (; i < stringLen; i = (i + 1) | 0) result += "\ufffd"; // fill rest with replacement character

		return result;
	}
	function TextDecoder(_, opts) {
		/*this["ignoreBOM"] = !!opts && !!opts["ignoreBOM"]*/
	}
	TextDecoder["prototype"]["decode"] = function (inputArrayOrBuffer) {
		var buffer =
			(inputArrayOrBuffer && inputArrayOrBuffer.buffer) || inputArrayOrBuffer;
		var asObjectString = Object_prototype_toString.call(buffer);
		if (
			asObjectString !== arrayBufferString &&
			asObjectString !== sharedArrayBufferString &&
			inputArrayOrBuffer !== undefined
		)
			throw TypeError(
				"Failed to execute 'decode' on 'TextDecoder': The provided value is not of type '(ArrayBuffer or ArrayBufferView)'",
			);
		var inputAs8 = NativeUint8Array ? new patchedU8Array(buffer) : buffer;
		var resultingString = "";
		for (
			var index = 0 /*inputAs8[0]!==0xEF||inputAs8[1]!==0xBB||inputAs8[2]!==0xBF||this["ignoreBOM"]?0:3*/,
				len = inputAs8.length | 0;
			index < len;
			index = (index + 32768) | 0
		)
			resultingString += fromCharCode.apply(
				0,
				inputAs8[NativeUint8Array ? "subarray" : "slice"](
					index,
					(index + 32768) | 0,
				),
			);

		return resultingString.replace(
			/[\xc0-\xff][\x80-\xbf]+|[\x80-\xff]/g,
			decoderReplacer,
		);
	};
	if (!window["TextDecoder"]) window["TextDecoder"] = TextDecoder;
	// })(typeof global == "" + void 0 ? typeof self == "" + void 0 ? this : self : global);
})(globalThis);