static guessEncoding(bytes, hints) {
			if (hints !== null && hints !== undefined && undefined !== hints.get(DecodeHintType$1.CHARACTER_SET)) {
				return hints.get(DecodeHintType$1.CHARACTER_SET).toString();
			}
			// For now, merely tries to distinguish ISO-8859-1, UTF-8 and Shift_JIS,
			// which should be by far the most common encodings.
			const length = bytes.length;
			let canBeISO88591 = true;
			let canBeShiftJIS = true;
			let canBeUTF8 = true;
			let utf8BytesLeft = 0;
			// int utf8LowChars = 0
			let utf2BytesChars = 0;
			let utf3BytesChars = 0;
			let utf4BytesChars = 0;
			let sjisBytesLeft = 0;
			// int sjisLowChars = 0
			let sjisKatakanaChars = 0;
			// int sjisDoubleBytesChars = 0
			let sjisCurKatakanaWordLength = 0;
			let sjisCurDoubleBytesWordLength = 0;
			let sjisMaxKatakanaWordLength = 0;
			let sjisMaxDoubleBytesWordLength = 0;
			// int isoLowChars = 0
			// int isoHighChars = 0
			let isoHighOther = 0;
			const utf8bom = bytes.length > 3 &&
				bytes[0] === /*(byte) */ 0xEF &&
				bytes[1] === /*(byte) */ 0xBB &&
				bytes[2] === /*(byte) */ 0xBF;
			for (let i = 0; i < length && (canBeISO88591 || canBeShiftJIS || canBeUTF8); i++) {
				const value = bytes[i] & 0xFF;
				// UTF-8 stuff
				if (canBeUTF8) {
					if (utf8BytesLeft > 0) {
						if ((value & 0x80) === 0) {
							canBeUTF8 = false;
						}
						else {
							utf8BytesLeft--;
						}
					}
					else if ((value & 0x80) !== 0) {
						if ((value & 0x40) === 0) {
							canBeUTF8 = false;
						}
						else {
							utf8BytesLeft++;
							if ((value & 0x20) === 0) {
								utf2BytesChars++;
							}
							else {
								utf8BytesLeft++;
								if ((value & 0x10) === 0) {
									utf3BytesChars++;
								}
								else {
									utf8BytesLeft++;
									if ((value & 0x08) === 0) {
										utf4BytesChars++;
									}
									else {
										canBeUTF8 = false;
									}
								}
							}
						}
					} // else {
					// utf8LowChars++
					// }
				}
				// ISO-8859-1 stuff
				if (canBeISO88591) {
					if (value > 0x7F && value < 0xA0) {
						canBeISO88591 = false;
					}
					else if (value > 0x9F) {
						if (value < 0xC0 || value === 0xD7 || value === 0xF7) {
							isoHighOther++;
						} // else {
						// isoHighChars++
						// }
					} // else {
					// isoLowChars++
					// }
				}
				// Shift_JIS stuff
				if (canBeShiftJIS) {
					if (sjisBytesLeft > 0) {
						if (value < 0x40 || value === 0x7F || value > 0xFC) {
							canBeShiftJIS = false;
						}
						else {
							sjisBytesLeft--;
						}
					}
					else if (value === 0x80 || value === 0xA0 || value > 0xEF) {
						canBeShiftJIS = false;
					}
					else if (value > 0xA0 && value < 0xE0) {
						sjisKatakanaChars++;
						sjisCurDoubleBytesWordLength = 0;
						sjisCurKatakanaWordLength++;
						if (sjisCurKatakanaWordLength > sjisMaxKatakanaWordLength) {
							sjisMaxKatakanaWordLength = sjisCurKatakanaWordLength;
						}
					}
					else if (value > 0x7F) {
						sjisBytesLeft++;
						// sjisDoubleBytesChars++
						sjisCurKatakanaWordLength = 0;
						sjisCurDoubleBytesWordLength++;
						if (sjisCurDoubleBytesWordLength > sjisMaxDoubleBytesWordLength) {
							sjisMaxDoubleBytesWordLength = sjisCurDoubleBytesWordLength;
						}
					}
					else {
						// sjisLowChars++
						sjisCurKatakanaWordLength = 0;
						sjisCurDoubleBytesWordLength = 0;
					}
				}
			}
			if (canBeUTF8 && utf8BytesLeft > 0) {
				canBeUTF8 = false;
			}
			if (canBeShiftJIS && sjisBytesLeft > 0) {
				canBeShiftJIS = false;
			}
			// Easy -- if there is BOM or at least 1 valid not-single byte character (and no evidence it can't be UTF-8), done
			if (canBeUTF8 && (utf8bom || utf2BytesChars + utf3BytesChars + utf4BytesChars > 0)) {
				return StringUtils.UTF8;
			}
			// Easy -- if assuming Shift_JIS or at least 3 valid consecutive not-ascii characters (and no evidence it can't be), done
			if (canBeShiftJIS && (StringUtils.ASSUME_SHIFT_JIS || sjisMaxKatakanaWordLength >= 3 || sjisMaxDoubleBytesWordLength >= 3)) {
				return StringUtils.SHIFT_JIS;
			}
			// Distinguishing Shift_JIS and ISO-8859-1 can be a little tough for short words. The crude heuristic is:
			// - If we saw
			//   - only two consecutive katakana chars in the whole text, or
			//   - at least 10% of bytes that could be "upper" not-alphanumeric Latin1,
			// - then we conclude Shift_JIS, else ISO-8859-1
			if (canBeISO88591 && canBeShiftJIS) {
				return (sjisMaxKatakanaWordLength === 2 && sjisKatakanaChars === 2) || isoHighOther * 10 >= length
					? StringUtils.SHIFT_JIS : StringUtils.ISO88591;
			}
			// Otherwise, try in order ISO-8859-1, Shift JIS, UTF-8 and fall back to default platform encoding
			if (canBeISO88591) {
				return StringUtils.ISO88591;
			}
			if (canBeShiftJIS) {
				return StringUtils.SHIFT_JIS;
			}
			if (canBeUTF8) {
				return StringUtils.UTF8;
			}
			// Otherwise, we take a wild guess with platform encoding
			return StringUtils.PLATFORM_DEFAULT_ENCODING;
		}
@param bytes bytes encoding a string, whose encoding should be guessed
@param hints decode hints if applicable
@return name of guessed encoding; at the moment will only guess one of:
 {@link #SHIFT_JIS}, {@link #UTF8}, {@link #ISO88591}, or the platform
 default encoding if none of these can possibly be correct