373 Buffer.alloc = function alloc(size, fill, encoding) {  argument
377     return _fill(buf, fill, 0, buf.length, encoding);
445 function fromString(string, encoding) {  argument
447   if (typeof encoding !== 'string' || encoding.length === 0) {
451     encoding = undefined;
453     ops = getEncodingOps(encoding);
455       throw new ERR_UNKNOWN_ENCODING(encoding);
543 Buffer.isEncoding = function isEncoding(encoding) {  argument
544   return typeof encoding === 'string' && encoding.length !== 0 &&
545          normalizeEncoding(encoding) !== undefined;
605     encoding: 'utf8',  property
614     encoding: 'ucs2',  property
623     encoding: 'utf16le',  property
632     encoding: 'latin1',  property
641     encoding: 'ascii',  property
654     encoding: 'base64',  property
667     encoding: 'base64url',  property
681     encoding: 'hex',  property
694 function getEncodingOps(encoding) {  argument
695   encoding += '';
696   switch (encoding.length) {
698       if (encoding === 'utf8') return encodingOps.utf8;
699       if (encoding === 'ucs2') return encodingOps.ucs2;
700       encoding = StringPrototypeToLowerCase(encoding);
701       if (encoding === 'utf8') return encodingOps.utf8;
702       if (encoding === 'ucs2') return encodingOps.ucs2;
705       if (encoding === 'utf-8') return encodingOps.utf8;
706       if (encoding === 'ascii') return encodingOps.ascii;
707       if (encoding === 'ucs-2') return encodingOps.ucs2;
708       encoding = StringPrototypeToLowerCase(encoding);
709       if (encoding === 'utf-8') return encodingOps.utf8;
710       if (encoding === 'ascii') return encodingOps.ascii;
711       if (encoding === 'ucs-2') return encodingOps.ucs2;
714       if (encoding === 'utf16le' ||
715           StringPrototypeToLowerCase(encoding) === 'utf16le')
719       if (encoding === 'utf-16le' ||
720           StringPrototypeToLowerCase(encoding) === 'utf-16le')
724       if (encoding === 'latin1' || encoding === 'binary')
726       if (encoding === 'base64') return encodingOps.base64;
727       encoding = StringPrototypeToLowerCase(encoding);
728       if (encoding === 'latin1' || encoding === 'binary')
730       if (encoding === 'base64') return encodingOps.base64;
733       if (encoding === 'hex' || StringPrototypeToLowerCase(encoding) === 'hex')
737       if (encoding === 'base64url' ||
738           StringPrototypeToLowerCase(encoding) === 'base64url')
744 function byteLength(string, encoding) {  argument
760   if (!encoding)
763   const ops = getEncodingOps(encoding);
798 Buffer.prototype.toString = function toString(encoding, start, end) {  argument
820   if (encoding === undefined)
823   const ops = getEncodingOps(encoding);
825     throw new ERR_UNKNOWN_ENCODING(encoding);
930 function bidirectionalIndexOf(buffer, val, byteOffset, encoding, dir) {  argument
934     encoding = byteOffset;
953   if (encoding === undefined)
956     ops = getEncodingOps(encoding);
960       throw new ERR_UNKNOWN_ENCODING(encoding);
975 Buffer.prototype.indexOf = function indexOf(val, byteOffset, encoding) {  argument
976   return bidirectionalIndexOf(this, val, byteOffset, encoding, true);
979 Buffer.prototype.lastIndexOf = function lastIndexOf(val, byteOffset, encoding) {  argument
980   return bidirectionalIndexOf(this, val, byteOffset, encoding, false);
983 Buffer.prototype.includes = function includes(val, byteOffset, encoding) {  argument
984   return this.indexOf(val, byteOffset, encoding) !== -1;
991 Buffer.prototype.fill = function fill(value, offset, end, encoding) {  argument
992   return _fill(this, value, offset, end, encoding);
995 function _fill(buf, value, offset, end, encoding) {  argument
998       encoding = offset;
1002       encoding = end;
1006     const normalizedEncoding = normalizeEncoding(encoding);
1008       validateString(encoding, 'encoding');
1009       throw new ERR_UNKNOWN_ENCODING(encoding);
1027     encoding = undefined;
1055     const res = bindingFill(buf, value, offset, end, encoding);
1066 Buffer.prototype.write = function write(string, offset, length, encoding) {  argument
1073     encoding = offset;
1086       encoding = length;
1095   if (!encoding)
1098   const ops = getEncodingOps(encoding);
1100     throw new ERR_UNKNOWN_ENCODING(encoding);