diff --git a/op_crates/web/08_text_encoding.js b/op_crates/web/08_text_encoding.js
index f759fb66ce..060d4879bb 100644
--- a/op_crates/web/08_text_encoding.js
+++ b/op_crates/web/08_text_encoding.js
@@ -142,10 +142,7 @@
     #index = [];
     #fatal = false;
 
-    constructor(
-      index,
-      { ignoreBOM = false, fatal = false } = {},
-    ) {
+    constructor(index, { ignoreBOM = false, fatal = false } = {}) {
       if (ignoreBOM) {
         throw new TypeError("Ignoring the BOM is available only with utf-8.");
       }
@@ -192,6 +189,146 @@
       "x-cp1252",
     ],
     "utf-8": ["unicode-1-1-utf-8", "utf-8", "utf8"],
+    ibm866: ["866", "cp866", "csibm866", "ibm866"],
+    "iso-8859-2": [
+      "csisolatin2",
+      "iso-8859-2",
+      "iso-ir-101",
+      "iso8859-2",
+      "iso88592",
+      "iso_8859-2",
+      "iso_8859-2:1987",
+      "l2",
+      "latin2",
+    ],
+    "iso-8859-3": [
+      "csisolatin3",
+      "iso-8859-3",
+      "iso-ir-109",
+      "iso8859-3",
+      "iso88593",
+      "iso_8859-3",
+      "iso_8859-3:1988",
+      "l3",
+      "latin3",
+    ],
+    "iso-8859-4": [
+      "csisolatin4",
+      "iso-8859-4",
+      "iso-ir-110",
+      "iso8859-4",
+      "iso88594",
+      "iso_8859-4",
+      "iso_8859-4:1988",
+      "l4",
+      "latin4",
+    ],
+    "iso-8859-5": [
+      "csisolatincyrillic",
+      "cyrillic",
+      "iso-8859-5",
+      "iso-ir-144",
+      "iso8859-5",
+      "iso88595",
+      "iso_8859-5",
+      "iso_8859-5:1988",
+    ],
+    "iso-8859-6": [
+      "arabic",
+      "asmo-708",
+      "csiso88596e",
+      "csiso88596i",
+      "csisolatinarabic",
+      "ecma-114",
+      "iso-8859-6",
+      "iso-8859-6-e",
+      "iso-8859-6-i",
+      "iso-ir-127",
+      "iso8859-6",
+      "iso88596",
+      "iso_8859-6",
+      "iso_8859-6:1987",
+    ],
+    "iso-8859-7": [
+      "csisolatingreek",
+      "ecma-118",
+      "elot_928",
+      "greek",
+      "greek8",
+      "iso-8859-7",
+      "iso-ir-126",
+      "iso8859-7",
+      "iso88597",
+      "iso_8859-7",
+      "iso_8859-7:1987",
+      "sun_eu_greek",
+    ],
+    "iso-8859-8": [
+      "csiso88598e",
+      "csisolatinhebrew",
+      "hebrew",
+      "iso-8859-8",
+      "iso-8859-8-e",
+      "iso-ir-138",
+      "iso8859-8",
+      "iso88598",
+      "iso_8859-8",
+      "iso_8859-8:1988",
+      "visual",
+    ],
+    "iso-8859-10": [
+      "csisolatin6",
+      "iso-8859-10",
+      "iso-ir-157",
+      "iso8859-10",
+      "iso885910",
+      "l6",
+      "latin6",
+    ],
+    "iso-8859-13": ["iso-8859-13", "iso8859-13", "iso885913"],
+    "iso-8859-14": ["iso-8859-14", "iso8859-14", "iso885914"],
+    "iso-8859-15": [
+      "csisolatin9",
+      "iso-8859-15",
+      "iso8859-15",
+      "iso885915",
+      "iso_8859-15",
+      "l9",
+    ],
+    "iso-8859-16": ["iso-8859-16"],
+    "koi8-r": ["cskoi8r", "koi", "koi8", "koi8-r", "koi8_r"],
+    "koi8-u": ["koi8-ru", "koi8-u"],
+    macintosh: ["csmacintosh", "mac", "macintosh", "x-mac-roman"],
+    "windows-874": [
+      "dos-874",
+      "iso-8859-11",
+      "iso8859-11",
+      "iso885911",
+      "tis-620",
+      "windows-874",
+    ],
+    "windows-1250": ["cp1250", "windows-1250", "x-cp1250"],
+    "windows-1251": ["cp1251", "windows-1251", "x-cp1251"],
+    "windows-1253": ["cp1253", "windows-1253", "x-cp1253"],
+    "windows-1254": [
+      "cp1254",
+      "csisolatin5",
+      "iso-8859-9",
+      "iso-ir-148",
+      "iso8859-9",
+      "iso88599",
+      "iso_8859-9",
+      "iso_8859-9:1989",
+      "l5",
+      "latin5",
+      "windows-1254",
+      "x-cp1254",
+    ],
+    "windows-1255": ["cp1255", "windows-1255", "x-cp1255"],
+    "windows-1256": ["cp1256", "windows-1256", "x-cp1256"],
+    "windows-1257": ["cp1257", "windows-1257", "x-cp1257"],
+    "windows-1258": ["cp1258", "windows-1258", "x-cp1258"],
+    "x-mac-cyrillic": ["x-mac-cyrillic", "x-mac-ukrainian"],
   };
   // We convert these into a Map where every label resolves to its canonical
   // encoding type.
@@ -211,142 +348,548 @@
   const encodingIndexes = new Map();
   // deno-fmt-ignore
   encodingIndexes.set("windows-1252", [
-    8364,
-    129,
-    8218,
-    402,
-    8222,
-    8230,
-    8224,
-    8225,
-    710,
-    8240,
-    352,
-    8249,
-    338,
-    141,
-    381,
-    143,
-    144,
-    8216,
-    8217,
-    8220,
-    8221,
-    8226,
-    8211,
-    8212,
-    732,
-    8482,
-    353,
-    8250,
-    339,
-    157,
-    382,
-    376,
-    160,
-    161,
-    162,
-    163,
-    164,
-    165,
-    166,
-    167,
-    168,
-    169,
-    170,
-    171,
-    172,
-    173,
-    174,
-    175,
-    176,
-    177,
-    178,
-    179,
-    180,
-    181,
-    182,
-    183,
-    184,
-    185,
-    186,
-    187,
-    188,
-    189,
-    190,
-    191,
-    192,
-    193,
-    194,
-    195,
-    196,
-    197,
-    198,
-    199,
-    200,
-    201,
-    202,
-    203,
-    204,
-    205,
-    206,
-    207,
-    208,
-    209,
-    210,
-    211,
-    212,
-    213,
-    214,
-    215,
-    216,
-    217,
-    218,
-    219,
-    220,
-    221,
-    222,
-    223,
-    224,
-    225,
-    226,
-    227,
-    228,
-    229,
-    230,
-    231,
-    232,
-    233,
-    234,
-    235,
-    236,
-    237,
-    238,
-    239,
-    240,
-    241,
-    242,
-    243,
-    244,
-    245,
-    246,
-    247,
-    248,
-    249,
-    250,
-    251,
-    252,
-    253,
-    254,
-    255,
+    8364, 129, 8218, 402, 8222, 8230, 8224, 8225, 710, 
+    8240, 352, 8249, 338, 141, 381, 143, 144, 
+    8216, 8217, 8220, 8221, 8226, 8211, 8212, 732, 
+    8482, 353, 8250, 339, 157, 382, 376, 160, 
+    161, 162, 163, 164, 165, 166, 167, 168, 
+    169, 170, 171, 172, 173, 174, 175, 176, 
+    177, 178, 179, 180, 181, 182, 183, 184, 
+    185, 186, 187, 188, 189, 190, 191, 192,
+    193, 194, 195, 196, 197, 198, 199, 200, 
+    201, 202, 203, 204, 205, 206, 207, 208, 
+    209, 210, 211, 212, 213, 214, 215, 216, 
+    217, 218, 219, 220, 221, 222, 223, 224, 
+    225, 226, 227, 228, 229, 230, 231, 232, 
+    233, 234, 235, 236, 237, 238, 239, 240, 
+    241, 242, 243, 244, 245, 246, 247, 248, 
+    249, 250, 251, 252, 253, 254, 255,
   ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("ibm866", [
+    1040, 1041, 1042, 1043, 1044, 1045, 1046, 1047,
+    1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055,
+    1056, 1057, 1058, 1059, 1060, 1061, 1062, 1063,
+    1064, 1065, 1066, 1067, 1068, 1069, 1070, 1071,
+    1072, 1073, 1074, 1075, 1076, 1077, 1078, 1079,
+    1080, 1081, 1082, 1083, 1084, 1085, 1086, 1087,
+    9617, 9618, 9619, 9474, 9508, 9569, 9570, 9558,
+    9557, 9571, 9553, 9559, 9565, 9564, 9563, 9488,
+    9492, 9524, 9516, 9500, 9472, 9532, 9566, 9567,
+    9562, 9556, 9577, 9574, 9568, 9552, 9580, 9575,
+    9576, 9572, 9573, 9561, 9560, 9554, 9555, 9579,
+    9578, 9496, 9484, 9608, 9604, 9612, 9616, 9600,
+    1088, 1089, 1090, 1091, 1092, 1093, 1094, 1095,
+    1096, 1097, 1098, 1099, 1100, 1101, 1102, 1103,
+    1025, 1105, 1028, 1108, 1031, 1111, 1038, 1118,
+    176, 8729, 183, 8730, 8470, 164, 9632, 160,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("iso-8859-2", [
+    128, 129, 130, 131, 132, 133, 134, 135,
+    136, 137, 138, 139, 140, 141, 142, 143,
+    144, 145, 146, 147, 148, 149, 150, 151,
+    152, 153, 154, 155, 156, 157, 158, 159,
+    160, 260, 728, 321, 164, 317, 346, 167,
+    168, 352, 350, 356, 377, 173, 381, 379,
+    176, 261, 731, 322, 180, 318, 347, 711,
+    184, 353, 351, 357, 378, 733, 382, 380,
+    340, 193, 194, 258, 196, 313, 262, 199,
+    268, 201, 280, 203, 282, 205, 206, 270,
+    272, 323, 327, 211, 212, 336, 214, 215,
+    344, 366, 218, 368, 220, 221, 354, 223,
+    341, 225, 226, 259, 228, 314, 263, 231,
+    269, 233, 281, 235, 283, 237, 238, 271,
+    273, 324, 328, 243, 244, 337, 246, 247,
+    345, 367, 250, 369, 252, 253, 355, 729,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("iso-8859-3", [
+    128, 129, 130, 131, 132, 133, 134, 135,
+    136, 137, 138, 139, 140, 141, 142, 143,
+    144, 145, 146, 147, 148, 149, 150, 151,
+    152, 153, 154, 155, 156, 157, 158, 159,
+    160, 294, 728, 163, 164, null, 292, 167,
+    168, 304, 350, 286, 308, 173, null, 379,
+    176, 295, 178, 179, 180, 181, 293, 183,
+    184, 305, 351, 287, 309, 189, null, 380,
+    192, 193, 194, null, 196, 266, 264, 199,
+    200, 201, 202, 203, 204, 205, 206, 207,
+    null, 209, 210, 211, 212, 288, 214, 215,
+    284, 217, 218, 219, 220, 364, 348, 223,
+    224, 225, 226, null, 228, 267, 265, 231,
+    232, 233, 234, 235, 236, 237, 238, 239,
+    null, 241, 242, 243, 244, 289, 246, 247,
+    285, 249, 250, 251, 252, 365, 349, 729,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("iso-8859-4", [
+    128, 129, 130, 131, 132, 133, 134, 135,
+    136, 137, 138, 139, 140, 141, 142, 143,
+    144, 145, 146, 147, 148, 149, 150, 151,
+    152, 153, 154, 155, 156, 157, 158, 159,
+    160, 260, 312, 342, 164, 296, 315, 167,
+    168, 352, 274, 290, 358, 173, 381, 175,
+    176, 261, 731, 343, 180, 297, 316, 711,
+    184, 353, 275, 291, 359, 330, 382, 331,
+    256, 193, 194, 195, 196, 197, 198, 302,
+    268, 201, 280, 203, 278, 205, 206, 298,
+    272, 325, 332, 310, 212, 213, 214, 215,
+    216, 370, 218, 219, 220, 360, 362, 223,
+    257, 225, 226, 227, 228, 229, 230, 303,
+    269, 233, 281, 235, 279, 237, 238, 299,
+    273, 326, 333, 311, 244, 245, 246, 247,
+    248, 371, 250, 251, 252, 361, 363, 729,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("iso-8859-5", [
+    128, 129, 130, 131, 132, 133, 134, 135,
+    136, 137, 138, 139, 140, 141, 142, 143,
+    144, 145, 146, 147, 148, 149, 150, 151,
+    152, 153, 154, 155, 156, 157, 158, 159,
+    160, 1025, 1026, 1027, 1028, 1029, 1030, 1031,
+    1032, 1033, 1034, 1035, 1036, 173, 1038, 1039,
+    1040, 1041, 1042, 1043, 1044, 1045, 1046, 1047,
+    1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055,
+    1056, 1057, 1058, 1059, 1060, 1061, 1062, 1063,
+    1064, 1065, 1066, 1067, 1068, 1069, 1070, 1071,
+    1072, 1073, 1074, 1075, 1076, 1077, 1078, 1079,
+    1080, 1081, 1082, 1083, 1084, 1085, 1086, 1087,
+    1088, 1089, 1090, 1091, 1092, 1093, 1094, 1095,
+    1096, 1097, 1098, 1099, 1100, 1101, 1102, 1103,
+    8470, 1105, 1106, 1107, 1108, 1109, 1110, 1111,
+    1112, 1113, 1114, 1115, 1116, 167, 1118, 1119,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("iso-8859-6", [
+    128, 129, 130, 131, 132, 133, 134, 135,
+    136, 137, 138, 139, 140, 141, 142, 143,
+    144, 145, 146, 147, 148, 149, 150, 151,
+    152, 153, 154, 155, 156, 157, 158, 159,
+    160, null, null, null, 164, null, null, null,
+    null, null, null, null, 1548, 173, null, null,
+    null, null, null, null, null, null, null, null,
+    null, null, null, 1563, null, null, null, 1567,
+    null, 1569, 1570, 1571, 1572, 1573, 1574, 1575,
+    1576, 1577, 1578, 1579, 1580, 1581, 1582, 1583,
+    1584, 1585, 1586, 1587, 1588, 1589, 1590, 1591,
+    1592, 1593, 1594, null, null, null, null, null,
+    1600, 1601, 1602, 1603, 1604, 1605, 1606, 1607,
+    1608, 1609, 1610, 1611, 1612, 1613, 1614, 1615,
+    1616, 1617, 1618, null, null, null, null, null,
+    null, null, null, null, null, null, null, null,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("iso-8859-7", [
+    128, 129, 130, 131, 132, 133, 134, 135,
+    136, 137, 138, 139, 140, 141, 142, 143,
+    144, 145, 146, 147, 148, 149, 150, 151,
+    152, 153, 154, 155, 156, 157, 158, 159,
+    160, 8216, 8217, 163, 8364, 8367, 166, 167,
+    168, 169, 890, 171, 172, 173, null, 8213,
+    176, 177, 178, 179, 900, 901, 902, 183,
+    904, 905, 906, 187, 908, 189, 910, 911,
+    912, 913, 914, 915, 916, 917, 918, 919,
+    920, 921, 922, 923, 924, 925, 926, 927,
+    928, 929, null, 931, 932, 933, 934, 935,
+    936, 937, 938, 939, 940, 941, 942, 943,
+    944, 945, 946, 947, 948, 949, 950, 951,
+    952, 953, 954, 955, 956, 957, 958, 959,
+    960, 961, 962, 963, 964, 965, 966, 967,
+    968, 969, 970, 971, 972, 973, 974, null,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("iso-8859-8", [
+    128, 129, 130, 131, 132, 133, 134, 135,
+    136, 137, 138, 139, 140, 141, 142, 143,
+    144, 145, 146, 147, 148, 149, 150, 151,
+    152, 153, 154, 155, 156, 157, 158, 159,
+    160, null, 162, 163, 164, 165, 166, 167,
+    168, 169, 215, 171, 172, 173, 174, 175,
+    176, 177, 178, 179, 180, 181, 182, 183,
+    184, 185, 247, 187, 188, 189, 190, null,
+    null, null, null, null, null, null, null, null,
+    null, null, null, null, null, null, null, null,
+    null, null, null, null, null, null, null, null,
+    null, null, null, null, null, null, null, 8215,
+    1488, 1489, 1490, 1491, 1492, 1493, 1494, 1495,
+    1496, 1497, 1498, 1499, 1500, 1501, 1502, 1503,
+    1504, 1505, 1506, 1507, 1508, 1509, 1510, 1511,
+    1512, 1513, 1514, null, null, 8206, 8207, null,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("iso-8859-10", [
+    128, 129, 130, 131, 132, 133, 134, 135,
+    136, 137, 138, 139, 140, 141, 142, 143,
+    144, 145, 146, 147, 148, 149, 150, 151,
+    152, 153, 154, 155, 156, 157, 158, 159,
+    160, 260, 274, 290, 298, 296, 310, 167,
+    315, 272, 352, 358, 381, 173, 362, 330,
+    176, 261, 275, 291, 299, 297, 311, 183,
+    316, 273, 353, 359, 382, 8213, 363, 331,
+    256, 193, 194, 195, 196, 197, 198, 302,
+    268, 201, 280, 203, 278, 205, 206, 207,
+    208, 325, 332, 211, 212, 213, 214, 360,
+    216, 370, 218, 219, 220, 221, 222, 223,
+    257, 225, 226, 227, 228, 229, 230, 303,
+    269, 233, 281, 235, 279, 237, 238, 239,
+    240, 326, 333, 243, 244, 245, 246, 361,
+    248, 371, 250, 251, 252, 253, 254, 312,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("iso-8859-13", [
+    128, 129, 130, 131, 132, 133, 134, 135,
+    136, 137, 138, 139, 140, 141, 142, 143,
+    144, 145, 146, 147, 148, 149, 150, 151,
+    152, 153, 154, 155, 156, 157, 158, 159,
+    160, 8221, 162, 163, 164, 8222, 166, 167,
+    216, 169, 342, 171, 172, 173, 174, 198,
+    176, 177, 178, 179, 8220, 181, 182, 183,
+    248, 185, 343, 187, 188, 189, 190, 230,
+    260, 302, 256, 262, 196, 197, 280, 274,
+    268, 201, 377, 278, 290, 310, 298, 315,
+    352, 323, 325, 211, 332, 213, 214, 215,
+    370, 321, 346, 362, 220, 379, 381, 223,
+    261, 303, 257, 263, 228, 229, 281, 275,
+    269, 233, 378, 279, 291, 311, 299, 316,
+    353, 324, 326, 243, 333, 245, 246, 247,
+    371, 322, 347, 363, 252, 380, 382, 8217,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("iso-8859-14", [
+    128, 129, 130, 131, 132, 133, 134, 135,
+    136, 137, 138, 139, 140, 141, 142, 143,
+    144, 145, 146, 147, 148, 149, 150, 151,
+    152, 153, 154, 155, 156, 157, 158, 159,
+    160, 7682, 7683, 163, 266, 267, 7690, 167,
+    7808, 169, 7810, 7691, 7922, 173, 174, 376,
+    7710, 7711, 288, 289, 7744, 7745, 182, 7766,
+    7809, 7767, 7811, 7776, 7923, 7812, 7813, 7777,
+    192, 193, 194, 195, 196, 197, 198, 199,
+    200, 201, 202, 203, 204, 205, 206, 207,
+    372, 209, 210, 211, 212, 213, 214, 7786,
+    216, 217, 218, 219, 220, 221, 374, 223,
+    224, 225, 226, 227, 228, 229, 230, 231,
+    232, 233, 234, 235, 236, 237, 238, 239,
+    373, 241, 242, 243, 244, 245, 246, 7787,
+    248, 249, 250, 251, 252, 253, 375, 255,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("iso-8859-15", [
+    128, 129, 130, 131, 132, 133, 134, 135,
+    136, 137, 138, 139, 140, 141, 142, 143,
+    144, 145, 146, 147, 148, 149, 150, 151,
+    152, 153, 154, 155, 156, 157, 158, 159,
+    160, 161, 162, 163, 8364, 165, 352, 167,
+    353, 169, 170, 171, 172, 173, 174, 175,
+    176, 177, 178, 179, 381, 181, 182, 183,
+    382, 185, 186, 187, 338, 339, 376, 191,
+    192, 193, 194, 195, 196, 197, 198, 199,
+    200, 201, 202, 203, 204, 205, 206, 207,
+    208, 209, 210, 211, 212, 213, 214, 215,
+    216, 217, 218, 219, 220, 221, 222, 223,
+    224, 225, 226, 227, 228, 229, 230, 231,
+    232, 233, 234, 235, 236, 237, 238, 239,
+    240, 241, 242, 243, 244, 245, 246, 247,
+    248, 249, 250, 251, 252, 253, 254, 255,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("iso-8859-16", [
+    128, 129, 130, 131, 132, 133, 134, 135,
+    136, 137, 138, 139, 140, 141, 142, 143,
+    144, 145, 146, 147, 148, 149, 150, 151,
+    152, 153, 154, 155, 156, 157, 158, 159,
+    160, 260, 261, 321, 8364, 8222, 352, 167,
+    353, 169, 536, 171, 377, 173, 378, 379,
+    176, 177, 268, 322, 381, 8221, 182, 183,
+    382, 269, 537, 187, 338, 339, 376, 380,
+    192, 193, 194, 258, 196, 262, 198, 199,
+    200, 201, 202, 203, 204, 205, 206, 207,
+    272, 323, 210, 211, 212, 336, 214, 346,
+    368, 217, 218, 219, 220, 280, 538, 223,
+    224, 225, 226, 259, 228, 263, 230, 231,
+    232, 233, 234, 235, 236, 237, 238, 239,
+    273, 324, 242, 243, 244, 337, 246, 347,
+    369, 249, 250, 251, 252, 281, 539, 255,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("koi8-r", [
+    9472, 9474, 9484, 9488, 9492, 9496, 9500, 9508,
+    9516, 9524, 9532, 9600, 9604, 9608, 9612, 9616,
+    9617, 9618, 9619, 8992, 9632, 8729, 8730, 8776,
+    8804, 8805, 160, 8993, 176, 178, 183, 247,
+    9552, 9553, 9554, 1105, 9555, 9556, 9557, 9558,
+    9559, 9560, 9561, 9562, 9563, 9564, 9565, 9566,
+    9567, 9568, 9569, 1025, 9570, 9571, 9572, 9573,
+    9574, 9575, 9576, 9577, 9578, 9579, 9580, 169,
+    1102, 1072, 1073, 1094, 1076, 1077, 1092, 1075,
+    1093, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
+    1087, 1103, 1088, 1089, 1090, 1091, 1078, 1074,
+    1100, 1099, 1079, 1096, 1101, 1097, 1095, 1098,
+    1070, 1040, 1041, 1062, 1044, 1045, 1060, 1043,
+    1061, 1048, 1049, 1050, 1051, 1052, 1053, 1054,
+    1055, 1071, 1056, 1057, 1058, 1059, 1046, 1042,
+    1068, 1067, 1047, 1064, 1069, 1065, 1063, 1066,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("koi8-u", [
+    9472, 9474, 9484, 9488, 9492, 9496, 9500, 9508,
+    9516, 9524, 9532, 9600, 9604, 9608, 9612, 9616,
+    9617, 9618, 9619, 8992, 9632, 8729, 8730, 8776,
+    8804, 8805, 160, 8993, 176, 178, 183, 247,
+    9552, 9553, 9554, 1105, 1108, 9556, 1110, 1111,
+    9559, 9560, 9561, 9562, 9563, 1169, 1118, 9566,
+    9567, 9568, 9569, 1025, 1028, 9571, 1030, 1031,
+    9574, 9575, 9576, 9577, 9578, 1168, 1038, 169,
+    1102, 1072, 1073, 1094, 1076, 1077, 1092, 1075,
+    1093, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
+    1087, 1103, 1088, 1089, 1090, 1091, 1078, 1074,
+    1100, 1099, 1079, 1096, 1101, 1097, 1095, 1098,
+    1070, 1040, 1041, 1062, 1044, 1045, 1060, 1043,
+    1061, 1048, 1049, 1050, 1051, 1052, 1053, 1054,
+    1055, 1071, 1056, 1057, 1058, 1059, 1046, 1042,
+    1068, 1067, 1047, 1064, 1069, 1065, 1063, 1066,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("macintosh", [
+    196, 197, 199, 201, 209, 214, 220, 225,
+    224, 226, 228, 227, 229, 231, 233, 232,
+    234, 235, 237, 236, 238, 239, 241, 243,
+    242, 244, 246, 245, 250, 249, 251, 252,
+    8224, 176, 162, 163, 167, 8226, 182, 223,
+    174, 169, 8482, 180, 168, 8800, 198, 216,
+    8734, 177, 8804, 8805, 165, 181, 8706, 8721,
+    8719, 960, 8747, 170, 186, 937, 230, 248,
+    191, 161, 172, 8730, 402, 8776, 8710, 171,
+    187, 8230, 160, 192, 195, 213, 338, 339,
+    8211, 8212, 8220, 8221, 8216, 8217, 247, 9674,
+    255, 376, 8260, 8364, 8249, 8250, 64257, 64258,
+    8225, 183, 8218, 8222, 8240, 194, 202, 193,
+    203, 200, 205, 206, 207, 204, 211, 212,
+    63743, 210, 218, 219, 217, 305, 710, 732,
+    175, 728, 729, 730, 184, 733, 731, 711,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("windows-874", [
+    8364, 129, 130, 131, 132, 8230, 134, 135,
+    136, 137, 138, 139, 140, 141, 142, 143,
+    144, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+    152, 153, 154, 155, 156, 157, 158, 159,
+    160, 3585, 3586, 3587, 3588, 3589, 3590, 3591,
+    3592, 3593, 3594, 3595, 3596, 3597, 3598, 3599,
+    3600, 3601, 3602, 3603, 3604, 3605, 3606, 3607,
+    3608, 3609, 3610, 3611, 3612, 3613, 3614, 3615,
+    3616, 3617, 3618, 3619, 3620, 3621, 3622, 3623,
+    3624, 3625, 3626, 3627, 3628, 3629, 3630, 3631,
+    3632, 3633, 3634, 3635, 3636, 3637, 3638, 3639,
+    3640, 3641, 3642, null, null, null, null, 3647,
+    3648, 3649, 3650, 3651, 3652, 3653, 3654, 3655,
+    3656, 3657, 3658, 3659, 3660, 3661, 3662, 3663,
+    3664, 3665, 3666, 3667, 3668, 3669, 3670, 3671,
+    3672, 3673, 3674, 3675, null, null, null, null,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("windows-1250", [
+    8364, 129, 8218, 131, 8222, 8230, 8224, 8225,
+    136, 8240, 352, 8249, 346, 356, 381, 377,
+    144, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+    152, 8482, 353, 8250, 347, 357, 382, 378,
+    160, 711, 728, 321, 164, 260, 166, 167,
+    168, 169, 350, 171, 172, 173, 174, 379,
+    176, 177, 731, 322, 180, 181, 182, 183,
+    184, 261, 351, 187, 317, 733, 318, 380,
+    340, 193, 194, 258, 196, 313, 262, 199,
+    268, 201, 280, 203, 282, 205, 206, 270,
+    272, 323, 327, 211, 212, 336, 214, 215,
+    344, 366, 218, 368, 220, 221, 354, 223,
+    341, 225, 226, 259, 228, 314, 263, 231,
+    269, 233, 281, 235, 283, 237, 238, 271,
+    273, 324, 328, 243, 244, 337, 246, 247,
+    345, 367, 250, 369, 252, 253, 355, 729,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("windows-1251", [
+    1026, 1027, 8218, 1107, 8222, 8230, 8224, 8225,
+    8364, 8240, 1033, 8249, 1034, 1036, 1035, 1039,
+    1106, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+    152, 8482, 1113, 8250, 1114, 1116, 1115, 1119,
+    160, 1038, 1118, 1032, 164, 1168, 166, 167,
+    1025, 169, 1028, 171, 172, 173, 174, 1031,
+    176, 177, 1030, 1110, 1169, 181, 182, 183,
+    1105, 8470, 1108, 187, 1112, 1029, 1109, 1111,
+    1040, 1041, 1042, 1043, 1044, 1045, 1046, 1047,
+    1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055,
+    1056, 1057, 1058, 1059, 1060, 1061, 1062, 1063,
+    1064, 1065, 1066, 1067, 1068, 1069, 1070, 1071,
+    1072, 1073, 1074, 1075, 1076, 1077, 1078, 1079,
+    1080, 1081, 1082, 1083, 1084, 1085, 1086, 1087,
+    1088, 1089, 1090, 1091, 1092, 1093, 1094, 1095,
+    1096, 1097, 1098, 1099, 1100, 1101, 1102, 1103,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("windows-1253", [
+    8364, 129, 8218, 402, 8222, 8230, 8224, 8225,
+    136, 8240, 138, 8249, 140, 141, 142, 143,
+    144, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+    152, 8482, 154, 8250, 156, 157, 158, 159,
+    160, 901, 902, 163, 164, 165, 166, 167,
+    168, 169, null, 171, 172, 173, 174, 8213,
+    176, 177, 178, 179, 900, 181, 182, 183,
+    904, 905, 906, 187, 908, 189, 910, 911,
+    912, 913, 914, 915, 916, 917, 918, 919,
+    920, 921, 922, 923, 924, 925, 926, 927,
+    928, 929, null, 931, 932, 933, 934, 935,
+    936, 937, 938, 939, 940, 941, 942, 943,
+    944, 945, 946, 947, 948, 949, 950, 951,
+    952, 953, 954, 955, 956, 957, 958, 959,
+    960, 961, 962, 963, 964, 965, 966, 967,
+    968, 969, 970, 971, 972, 973, 974, null,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("windows-1254", [
+    8364, 129, 8218, 402, 8222, 8230, 8224, 8225,
+    710, 8240, 352, 8249, 338, 141, 142, 143,
+    144, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+    732, 8482, 353, 8250, 339, 157, 158, 376,
+    160, 161, 162, 163, 164, 165, 166, 167,
+    168, 169, 170, 171, 172, 173, 174, 175,
+    176, 177, 178, 179, 180, 181, 182, 183,
+    184, 185, 186, 187, 188, 189, 190, 191,
+    192, 193, 194, 195, 196, 197, 198, 199,
+    200, 201, 202, 203, 204, 205, 206, 207,
+    286, 209, 210, 211, 212, 213, 214, 215,
+    216, 217, 218, 219, 220, 304, 350, 223,
+    224, 225, 226, 227, 228, 229, 230, 231,
+    232, 233, 234, 235, 236, 237, 238, 239,
+    287, 241, 242, 243, 244, 245, 246, 247,
+    248, 249, 250, 251, 252, 305, 351, 255,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("windows-1255", [
+    8364, 129, 8218, 402, 8222, 8230, 8224, 8225,
+    710, 8240, 138, 8249, 140, 141, 142, 143,
+    144, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+    732, 8482, 154, 8250, 156, 157, 158, 159,
+    160, 161, 162, 163, 8362, 165, 166, 167,
+    168, 169, 215, 171, 172, 173, 174, 175,
+    176, 177, 178, 179, 180, 181, 182, 183,
+    184, 185, 247, 187, 188, 189, 190, 191,
+    1456, 1457, 1458, 1459, 1460, 1461, 1462, 1463,
+    1464, 1465, 1466, 1467, 1468, 1469, 1470, 1471,
+    1472, 1473, 1474, 1475, 1520, 1521, 1522, 1523,
+    1524, null, null, null, null, null, null, null,
+    1488, 1489, 1490, 1491, 1492, 1493, 1494, 1495,
+    1496, 1497, 1498, 1499, 1500, 1501, 1502, 1503,
+    1504, 1505, 1506, 1507, 1508, 1509, 1510, 1511,
+    1512, 1513, 1514, null, null, 8206, 8207, null,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("windows-1256", [
+    8364, 1662, 8218, 402, 8222, 8230, 8224, 8225,
+    710, 8240, 1657, 8249, 338, 1670, 1688, 1672,
+    1711, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+    1705, 8482, 1681, 8250, 339, 8204, 8205, 1722,
+    160, 1548, 162, 163, 164, 165, 166, 167,
+    168, 169, 1726, 171, 172, 173, 174, 175,
+    176, 177, 178, 179, 180, 181, 182, 183,
+    184, 185, 1563, 187, 188, 189, 190, 1567,
+    1729, 1569, 1570, 1571, 1572, 1573, 1574, 1575,
+    1576, 1577, 1578, 1579, 1580, 1581, 1582, 1583,
+    1584, 1585, 1586, 1587, 1588, 1589, 1590, 215,
+    1591, 1592, 1593, 1594, 1600, 1601, 1602, 1603,
+    224, 1604, 226, 1605, 1606, 1607, 1608, 231,
+    232, 233, 234, 235, 1609, 1610, 238, 239,
+    1611, 1612, 1613, 1614, 244, 1615, 1616, 247,
+    1617, 249, 1618, 251, 252, 8206, 8207, 1746,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("windows-1257", [
+    8364, 129, 8218, 131, 8222, 8230, 8224, 8225,
+    136, 8240, 138, 8249, 140, 168, 711, 184,
+    144, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+    152, 8482, 154, 8250, 156, 175, 731, 159,
+    160, null, 162, 163, 164, null, 166, 167,
+    216, 169, 342, 171, 172, 173, 174, 198,
+    176, 177, 178, 179, 180, 181, 182, 183,
+    248, 185, 343, 187, 188, 189, 190, 230,
+    260, 302, 256, 262, 196, 197, 280, 274,
+    268, 201, 377, 278, 290, 310, 298, 315,
+    352, 323, 325, 211, 332, 213, 214, 215,
+    370, 321, 346, 362, 220, 379, 381, 223,
+    261, 303, 257, 263, 228, 229, 281, 275,
+    269, 233, 378, 279, 291, 311, 299, 316,
+    353, 324, 326, 243, 333, 245, 246, 247,
+    371, 322, 347, 363, 252, 380, 382, 729,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("windows-1258", [
+    8364, 129, 8218, 402, 8222, 8230, 8224, 8225,
+    710, 8240, 138, 8249, 338, 141, 142, 143,
+    144, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+    732, 8482, 154, 8250, 339, 157, 158, 376,
+    160, 161, 162, 163, 164, 165, 166, 167,
+    168, 169, 170, 171, 172, 173, 174, 175,
+    176, 177, 178, 179, 180, 181, 182, 183,
+    184, 185, 186, 187, 188, 189, 190, 191,
+    192, 193, 194, 258, 196, 197, 198, 199,
+    200, 201, 202, 203, 768, 205, 206, 207,
+    272, 209, 777, 211, 212, 416, 214, 215,
+    216, 217, 218, 219, 220, 431, 771, 223,
+    224, 225, 226, 259, 228, 229, 230, 231,
+    232, 233, 234, 235, 769, 237, 238, 239,
+    273, 241, 803, 243, 244, 417, 246, 247,
+    248, 249, 250, 251, 252, 432, 8363, 255,
+  ]);
+
+  // deno-fmt-ignore
+  encodingIndexes.set("x-mac-cyrillic", [
+    1040, 1041, 1042, 1043, 1044, 1045, 1046, 1047,
+    1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055,
+    1056, 1057, 1058, 1059, 1060, 1061, 1062, 1063,
+    1064, 1065, 1066, 1067, 1068, 1069, 1070, 1071,
+    8224, 176, 1168, 163, 167, 8226, 182, 1030,
+    174, 169, 8482, 1026, 1106, 8800, 1027, 1107,
+    8734, 177, 8804, 8805, 1110, 181, 1169, 1032,
+    1028, 1108, 1031, 1111, 1033, 1113, 1034, 1114,
+    1112, 1029, 172, 8730, 402, 8776, 8710, 171,
+    187, 8230, 160, 1035, 1115, 1036, 1116, 1109,
+    8211, 8212, 8220, 8221, 8216, 8217, 247, 8222,
+    1038, 1118, 1039, 1119, 8470, 1025, 1105, 1103,
+    1072, 1073, 1074, 1075, 1076, 1077, 1078, 1079,
+    1080, 1081, 1082, 1083, 1084, 1085, 1086, 1087,
+    1088, 1089, 1090, 1091, 1092, 1093, 1094, 1095,
+    1096, 1097, 1098, 1099, 1100, 1101, 1102, 8364,
+  ]);
+
   for (const [key, index] of encodingIndexes) {
-    decoders.set(
-      key,
-      (options) => {
-        return new SingleByteDecoder(index, options);
-      },
-    );
+    decoders.set(key, (options) => {
+      return new SingleByteDecoder(index, options);
+    });
   }
 
   function codePointsToString(codePoints) {
@@ -394,8 +937,11 @@
   }
 
   function isEitherArrayBuffer(x) {
-    return x instanceof SharedArrayBuffer || x instanceof ArrayBuffer ||
-      typeof x === "undefined";
+    return (
+      x instanceof SharedArrayBuffer ||
+      x instanceof ArrayBuffer ||
+      typeof x === "undefined"
+    );
   }
 
   class TextDecoder {
@@ -427,10 +973,7 @@
       this.#encoding = encoding;
     }
 
-    decode(
-      input,
-      options = { stream: false },
-    ) {
+    decode(input, options = { stream: false }) {
       if (options.stream) {
         throw new TypeError("Stream not supported.");
       }
@@ -580,11 +1123,7 @@
   // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   // SOFTWARE.
-  function decodeUtf8(
-    input,
-    fatal,
-    ignoreBOM,
-  ) {
+  function decodeUtf8(input, fatal, ignoreBOM) {
     let outString = "";
 
     // Prepare a buffer so that we don't have to do a lot of string concats, which
@@ -618,6 +1157,7 @@
         state = 0;
       }
 
+      // deno-fmt-ignore
       // deno-fmt-ignore
       type = [
          0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
@@ -633,6 +1173,7 @@
         ? (input[i] & 0x3f) | (codepoint << 6)
         : (0xff >> type) & input[i];
       // deno-fmt-ignore
+      // deno-fmt-ignore
       state = [
          0,12,24,36,60,96,84,12,12,12,48,72, 12,12,12,12,12,12,12,12,12,12,12,12,
         12, 0,12,12,12,12,12, 0,12, 0,12,12, 12,24,12,12,12,12,12,24,12,24,12,12,
@@ -723,11 +1264,7 @@
     return ((validLen + placeHoldersLen) * 3) / 4 - placeHoldersLen;
   }
 
-  function _byteLength(
-    b64,
-    validLen,
-    placeHoldersLen,
-  ) {
+  function _byteLength(b64, validLen, placeHoldersLen) {
     return ((validLen + placeHoldersLen) * 3) / 4 - placeHoldersLen;
   }
 
@@ -838,6 +1375,6 @@
   window.TextDecoder = TextDecoder;
   window.atob = atob;
   window.btoa = btoa;
-  window.__bootstrap = (window.__bootstrap || {});
+  window.__bootstrap = window.__bootstrap || {};
   window.__bootstrap.base64 = base64;
 })(this);
diff --git a/op_crates/web/text_encoding_test.js b/op_crates/web/text_encoding_test.js
index 06537df246..b51122f901 100644
--- a/op_crates/web/text_encoding_test.js
+++ b/op_crates/web/text_encoding_test.js
@@ -79,10 +79,22 @@ function btoaFailed() {
 function textDecoder2() {
   // deno-fmt-ignore
   const fixture = new Uint8Array([
-    0xf0, 0x9d, 0x93, 0xbd,
-    0xf0, 0x9d, 0x93, 0xae,
-    0xf0, 0x9d, 0x94, 0x81,
-    0xf0, 0x9d, 0x93, 0xbd
+    0xf0,
+    0x9d,
+    0x93,
+    0xbd,
+    0xf0,
+    0x9d,
+    0x93,
+    0xae,
+    0xf0,
+    0x9d,
+    0x94,
+    0x81,
+    0xf0,
+    0x9d,
+    0x93,
+    0xbd,
   ]);
   const decoder = new TextDecoder();
   assert(decoder.decode(fixture) === "𝓽𝓮𝔁𝓽");
@@ -91,11 +103,25 @@ function textDecoder2() {
 function textDecoderIgnoreBOM() {
   // deno-fmt-ignore
   const fixture = new Uint8Array([
-    0xef, 0xbb, 0xbf,
-    0xf0, 0x9d, 0x93, 0xbd,
-    0xf0, 0x9d, 0x93, 0xae,
-    0xf0, 0x9d, 0x94, 0x81,
-    0xf0, 0x9d, 0x93, 0xbd
+    0xef,
+    0xbb,
+    0xbf,
+    0xf0,
+    0x9d,
+    0x93,
+    0xbd,
+    0xf0,
+    0x9d,
+    0x93,
+    0xae,
+    0xf0,
+    0x9d,
+    0x94,
+    0x81,
+    0xf0,
+    0x9d,
+    0x93,
+    0xbd,
   ]);
   const decoder = new TextDecoder("utf-8", { ignoreBOM: true });
   assert(decoder.decode(fixture) === "𝓽𝓮𝔁𝓽");
@@ -104,11 +130,25 @@ function textDecoderIgnoreBOM() {
 function textDecoderNotBOM() {
   // deno-fmt-ignore
   const fixture = new Uint8Array([
-    0xef, 0xbb, 0x89,
-    0xf0, 0x9d, 0x93, 0xbd,
-    0xf0, 0x9d, 0x93, 0xae,
-    0xf0, 0x9d, 0x94, 0x81,
-    0xf0, 0x9d, 0x93, 0xbd
+    0xef,
+    0xbb,
+    0x89,
+    0xf0,
+    0x9d,
+    0x93,
+    0xbd,
+    0xf0,
+    0x9d,
+    0x93,
+    0xae,
+    0xf0,
+    0x9d,
+    0x94,
+    0x81,
+    0xf0,
+    0x9d,
+    0x93,
+    0xbd,
   ]);
   const decoder = new TextDecoder("utf-8", { ignoreBOM: true });
   assert(decoder.decode(fixture) === "ﻉ𝓽𝓮𝔁𝓽");
@@ -174,10 +214,22 @@ function textEncoder() {
   const encoder = new TextEncoder();
   // deno-fmt-ignore
   assertArrayEquals(Array.from(encoder.encode(fixture)), [
-    0xf0, 0x9d, 0x93, 0xbd,
-    0xf0, 0x9d, 0x93, 0xae,
-    0xf0, 0x9d, 0x94, 0x81,
-    0xf0, 0x9d, 0x93, 0xbd
+    0xf0,
+    0x9d,
+    0x93,
+    0xbd,
+    0xf0,
+    0x9d,
+    0x93,
+    0xae,
+    0xf0,
+    0x9d,
+    0x94,
+    0x81,
+    0xf0,
+    0x9d,
+    0x93,
+    0xbd,
   ]);
 }
 
@@ -189,9 +241,7 @@ function textEncodeInto() {
   assert(result.read === 4);
   assert(result.written === 4);
   // deno-fmt-ignore
-  assertArrayEquals(Array.from(bytes), [
-    0x74, 0x65, 0x78, 0x74, 0x00,
-  ]);
+  assertArrayEquals(Array.from(bytes), [0x74, 0x65, 0x78, 0x74, 0x00]);
 }
 
 function textEncodeInto2() {
@@ -203,10 +253,23 @@ function textEncodeInto2() {
   assert(result.written === 16);
   // deno-fmt-ignore
   assertArrayEquals(Array.from(bytes), [
-    0xf0, 0x9d, 0x93, 0xbd,
-    0xf0, 0x9d, 0x93, 0xae,
-    0xf0, 0x9d, 0x94, 0x81,
-    0xf0, 0x9d, 0x93, 0xbd, 0x00,
+    0xf0,
+    0x9d,
+    0x93,
+    0xbd,
+    0xf0,
+    0x9d,
+    0x93,
+    0xae,
+    0xf0,
+    0x9d,
+    0x94,
+    0x81,
+    0xf0,
+    0x9d,
+    0x93,
+    0xbd,
+    0x00,
   ]);
 }
 
@@ -218,9 +281,7 @@ function textEncodeInto3() {
   assert(result.read === 2);
   assert(result.written === 4);
   // deno-fmt-ignore
-  assertArrayEquals(Array.from(bytes), [
-    0xf0, 0x9d, 0x93, 0xbd, 0x00,
-  ]);
+  assertArrayEquals(Array.from(bytes), [0xf0, 0x9d, 0x93, 0xbd, 0x00]);
 }
 
 function textDecoderSharedUint8Array() {
@@ -257,6 +318,921 @@ function toStringShouldBeWebCompatibility() {
   assert(decoder.toString() === "[object TextDecoder]");
 }
 
+function singleByteEncodings() {
+  // Straight from https://encoding.spec.whatwg.org/encodings.json
+  const encodingsTable = [
+    {
+      encodings: [
+        {
+          labels: [
+            "unicode-1-1-utf-8",
+            "unicode11utf8",
+            "unicode20utf8",
+            "utf-8",
+            "utf8",
+            "x-unicode20utf8",
+          ],
+          name: "UTF-8",
+        },
+      ],
+      heading: "The Encoding",
+    },
+    {
+      encodings: [
+        {
+          labels: ["866", "cp866", "csibm866", "ibm866"],
+          name: "IBM866",
+        },
+        {
+          labels: [
+            "csisolatin2",
+            "iso-8859-2",
+            "iso-ir-101",
+            "iso8859-2",
+            "iso88592",
+            "iso_8859-2",
+            "iso_8859-2:1987",
+            "l2",
+            "latin2",
+          ],
+          name: "ISO-8859-2",
+        },
+        {
+          labels: [
+            "csisolatin3",
+            "iso-8859-3",
+            "iso-ir-109",
+            "iso8859-3",
+            "iso88593",
+            "iso_8859-3",
+            "iso_8859-3:1988",
+            "l3",
+            "latin3",
+          ],
+          name: "ISO-8859-3",
+        },
+        {
+          labels: [
+            "csisolatin4",
+            "iso-8859-4",
+            "iso-ir-110",
+            "iso8859-4",
+            "iso88594",
+            "iso_8859-4",
+            "iso_8859-4:1988",
+            "l4",
+            "latin4",
+          ],
+          name: "ISO-8859-4",
+        },
+        {
+          labels: [
+            "csisolatincyrillic",
+            "cyrillic",
+            "iso-8859-5",
+            "iso-ir-144",
+            "iso8859-5",
+            "iso88595",
+            "iso_8859-5",
+            "iso_8859-5:1988",
+          ],
+          name: "ISO-8859-5",
+        },
+        {
+          labels: [
+            "arabic",
+            "asmo-708",
+            "csiso88596e",
+            "csiso88596i",
+            "csisolatinarabic",
+            "ecma-114",
+            "iso-8859-6",
+            "iso-8859-6-e",
+            "iso-8859-6-i",
+            "iso-ir-127",
+            "iso8859-6",
+            "iso88596",
+            "iso_8859-6",
+            "iso_8859-6:1987",
+          ],
+          name: "ISO-8859-6",
+        },
+        {
+          labels: [
+            "csisolatingreek",
+            "ecma-118",
+            "elot_928",
+            "greek",
+            "greek8",
+            "iso-8859-7",
+            "iso-ir-126",
+            "iso8859-7",
+            "iso88597",
+            "iso_8859-7",
+            "iso_8859-7:1987",
+            "sun_eu_greek",
+          ],
+          name: "ISO-8859-7",
+        },
+        {
+          labels: [
+            "csiso88598e",
+            "csisolatinhebrew",
+            "hebrew",
+            "iso-8859-8",
+            "iso-8859-8-e",
+            "iso-ir-138",
+            "iso8859-8",
+            "iso88598",
+            "iso_8859-8",
+            "iso_8859-8:1988",
+            "visual",
+          ],
+          name: "ISO-8859-8",
+        },
+        // ignored because iso-8859-8-i is not supported
+        // {
+        //   labels: ["csiso88598i", "iso-8859-8-i", "logical"],
+        //   name: "ISO-8859-8-I",
+        // },
+        {
+          labels: [
+            "csisolatin6",
+            "iso-8859-10",
+            "iso-ir-157",
+            "iso8859-10",
+            "iso885910",
+            "l6",
+            "latin6",
+          ],
+          name: "ISO-8859-10",
+        },
+        {
+          labels: ["iso-8859-13", "iso8859-13", "iso885913"],
+          name: "ISO-8859-13",
+        },
+        {
+          labels: ["iso-8859-14", "iso8859-14", "iso885914"],
+          name: "ISO-8859-14",
+        },
+        {
+          labels: [
+            "csisolatin9",
+            "iso-8859-15",
+            "iso8859-15",
+            "iso885915",
+            "iso_8859-15",
+            "l9",
+          ],
+          name: "ISO-8859-15",
+        },
+        {
+          labels: ["iso-8859-16"],
+          name: "ISO-8859-16",
+        },
+        {
+          labels: ["cskoi8r", "koi", "koi8", "koi8-r", "koi8_r"],
+          name: "KOI8-R",
+        },
+        {
+          labels: ["koi8-ru", "koi8-u"],
+          name: "KOI8-U",
+        },
+        {
+          labels: ["csmacintosh", "mac", "macintosh", "x-mac-roman"],
+          name: "macintosh",
+        },
+        {
+          labels: [
+            "dos-874",
+            "iso-8859-11",
+            "iso8859-11",
+            "iso885911",
+            "tis-620",
+            "windows-874",
+          ],
+          name: "windows-874",
+        },
+        {
+          labels: ["cp1250", "windows-1250", "x-cp1250"],
+          name: "windows-1250",
+        },
+        {
+          labels: ["cp1251", "windows-1251", "x-cp1251"],
+          name: "windows-1251",
+        },
+        {
+          labels: [
+            "ansi_x3.4-1968",
+            "ascii",
+            "cp1252",
+            "cp819",
+            "csisolatin1",
+            "ibm819",
+            "iso-8859-1",
+            "iso-ir-100",
+            "iso8859-1",
+            "iso88591",
+            "iso_8859-1",
+            "iso_8859-1:1987",
+            "l1",
+            "latin1",
+            "us-ascii",
+            "windows-1252",
+            "x-cp1252",
+          ],
+          name: "windows-1252",
+        },
+        {
+          labels: ["cp1253", "windows-1253", "x-cp1253"],
+          name: "windows-1253",
+        },
+        {
+          labels: [
+            "cp1254",
+            "csisolatin5",
+            "iso-8859-9",
+            "iso-ir-148",
+            "iso8859-9",
+            "iso88599",
+            "iso_8859-9",
+            "iso_8859-9:1989",
+            "l5",
+            "latin5",
+            "windows-1254",
+            "x-cp1254",
+          ],
+          name: "windows-1254",
+        },
+        {
+          labels: ["cp1255", "windows-1255", "x-cp1255"],
+          name: "windows-1255",
+        },
+        {
+          labels: ["cp1256", "windows-1256", "x-cp1256"],
+          name: "windows-1256",
+        },
+        {
+          labels: ["cp1257", "windows-1257", "x-cp1257"],
+          name: "windows-1257",
+        },
+        {
+          labels: ["cp1258", "windows-1258", "x-cp1258"],
+          name: "windows-1258",
+        },
+        {
+          labels: ["x-mac-cyrillic", "x-mac-ukrainian"],
+          name: "x-mac-cyrillic",
+        },
+      ],
+      heading: "Legacy single-byte encodings",
+    },
+    {
+      encodings: [
+        {
+          labels: [
+            "chinese",
+            "csgb2312",
+            "csiso58gb231280",
+            "gb2312",
+            "gb_2312",
+            "gb_2312-80",
+            "gbk",
+            "iso-ir-58",
+            "x-gbk",
+          ],
+          name: "GBK",
+        },
+        {
+          labels: ["gb18030"],
+          name: "gb18030",
+        },
+      ],
+      heading: "Legacy multi-byte Chinese (simplified) encodings",
+    },
+    {
+      encodings: [
+        {
+          labels: ["big5", "big5-hkscs", "cn-big5", "csbig5", "x-x-big5"],
+          name: "Big5",
+        },
+      ],
+      heading: "Legacy multi-byte Chinese (traditional) encodings",
+    },
+    {
+      encodings: [
+        {
+          labels: ["cseucpkdfmtjapanese", "euc-jp", "x-euc-jp"],
+          name: "EUC-JP",
+        },
+        {
+          labels: ["csiso2022jp", "iso-2022-jp"],
+          name: "ISO-2022-JP",
+        },
+        {
+          labels: [
+            "csshiftjis",
+            "ms932",
+            "ms_kanji",
+            "shift-jis",
+            "shift_jis",
+            "sjis",
+            "windows-31j",
+            "x-sjis",
+          ],
+          name: "Shift_JIS",
+        },
+      ],
+      heading: "Legacy multi-byte Japanese encodings",
+    },
+    {
+      encodings: [
+        {
+          labels: [
+            "cseuckr",
+            "csksc56011987",
+            "euc-kr",
+            "iso-ir-149",
+            "korean",
+            "ks_c_5601-1987",
+            "ks_c_5601-1989",
+            "ksc5601",
+            "ksc_5601",
+            "windows-949",
+          ],
+          name: "EUC-KR",
+        },
+      ],
+      heading: "Legacy multi-byte Korean encodings",
+    },
+    {
+      encodings: [
+        {
+          labels: [
+            "csiso2022kr",
+            "hz-gb-2312",
+            "iso-2022-cn",
+            "iso-2022-cn-ext",
+            "iso-2022-kr",
+            "replacement",
+          ],
+          name: "replacement",
+        },
+        {
+          labels: ["unicodefffe", "utf-16be"],
+          name: "UTF-16BE",
+        },
+        {
+          labels: [
+            "csunicode",
+            "iso-10646-ucs-2",
+            "ucs-2",
+            "unicode",
+            "unicodefeff",
+            "utf-16",
+            "utf-16le",
+          ],
+          name: "UTF-16LE",
+        },
+        {
+          labels: ["x-user-defined"],
+          name: "x-user-defined",
+        },
+      ],
+      heading: "Legacy miscellaneous encodings",
+    },
+  ];
+
+  const singleByteEncodings = encodingsTable.filter((group) => {
+    return group.heading === "Legacy single-byte encodings";
+  })[0].encodings;
+
+  // https://encoding.spec.whatwg.org/indexes.json
+  // deno-fmt-ignore
+  const singleByteIndexes = {
+    "IBM866": [
+      1040, 1041, 1042, 1043, 1044, 1045, 1046, 1047,
+      1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055,
+      1056, 1057, 1058, 1059, 1060, 1061, 1062, 1063,
+      1064, 1065, 1066, 1067, 1068, 1069, 1070, 1071,
+      1072, 1073, 1074, 1075, 1076, 1077, 1078, 1079,
+      1080, 1081, 1082, 1083, 1084, 1085, 1086, 1087,
+      9617, 9618, 9619, 9474, 9508, 9569, 9570, 9558,
+      9557, 9571, 9553, 9559, 9565, 9564, 9563, 9488,
+      9492, 9524, 9516, 9500, 9472, 9532, 9566, 9567,
+      9562, 9556, 9577, 9574, 9568, 9552, 9580, 9575,
+      9576, 9572, 9573, 9561, 9560, 9554, 9555, 9579,
+      9578, 9496, 9484, 9608, 9604, 9612, 9616, 9600,
+      1088, 1089, 1090, 1091, 1092, 1093, 1094, 1095,
+      1096, 1097, 1098, 1099, 1100, 1101, 1102, 1103,
+      1025, 1105, 1028, 1108, 1031, 1111, 1038, 1118,
+      176, 8729, 183, 8730, 8470, 164, 9632, 160
+    ],
+    "ISO-8859-2": [
+      128, 129, 130, 131, 132, 133, 134, 135,
+      136, 137, 138, 139, 140, 141, 142, 143,
+      144, 145, 146, 147, 148, 149, 150, 151,
+      152, 153, 154, 155, 156, 157, 158, 159,
+      160, 260, 728, 321, 164, 317, 346, 167,
+      168, 352, 350, 356, 377, 173, 381, 379,
+      176, 261, 731, 322, 180, 318, 347, 711,
+      184, 353, 351, 357, 378, 733, 382, 380,
+      340, 193, 194, 258, 196, 313, 262, 199,
+      268, 201, 280, 203, 282, 205, 206, 270,
+      272, 323, 327, 211, 212, 336, 214, 215,
+      344, 366, 218, 368, 220, 221, 354, 223,
+      341, 225, 226, 259, 228, 314, 263, 231,
+      269, 233, 281, 235, 283, 237, 238, 271,
+      273, 324, 328, 243, 244, 337, 246, 247,
+      345, 367, 250, 369, 252, 253, 355, 729
+    ],
+    "ISO-8859-3": [
+      128, 129, 130, 131, 132, 133, 134, 135,
+      136, 137, 138, 139, 140, 141, 142, 143,
+      144, 145, 146, 147, 148, 149, 150, 151,
+      152, 153, 154, 155, 156, 157, 158, 159,
+      160, 294, 728, 163, 164, null, 292, 167,
+      168, 304, 350, 286, 308, 173, null, 379,
+      176, 295, 178, 179, 180, 181, 293, 183,
+      184, 305, 351, 287, 309, 189, null, 380,
+      192, 193, 194, null, 196, 266, 264, 199,
+      200, 201, 202, 203, 204, 205, 206, 207,
+      null, 209, 210, 211, 212, 288, 214, 215,
+      284, 217, 218, 219, 220, 364, 348, 223,
+      224, 225, 226, null, 228, 267, 265, 231,
+      232, 233, 234, 235, 236, 237, 238, 239,
+      null, 241, 242, 243, 244, 289, 246, 247,
+      285, 249, 250, 251, 252, 365, 349, 729
+    ],
+    "ISO-8859-4": [
+      128, 129, 130, 131, 132, 133, 134, 135,
+      136, 137, 138, 139, 140, 141, 142, 143,
+      144, 145, 146, 147, 148, 149, 150, 151,
+      152, 153, 154, 155, 156, 157, 158, 159,
+      160, 260, 312, 342, 164, 296, 315, 167,
+      168, 352, 274, 290, 358, 173, 381, 175,
+      176, 261, 731, 343, 180, 297, 316, 711,
+      184, 353, 275, 291, 359, 330, 382, 331,
+      256, 193, 194, 195, 196, 197, 198, 302,
+      268, 201, 280, 203, 278, 205, 206, 298,
+      272, 325, 332, 310, 212, 213, 214, 215,
+      216, 370, 218, 219, 220, 360, 362, 223,
+      257, 225, 226, 227, 228, 229, 230, 303,
+      269, 233, 281, 235, 279, 237, 238, 299,
+      273, 326, 333, 311, 244, 245, 246, 247,
+      248, 371, 250, 251, 252, 361, 363, 729
+    ],
+    "ISO-8859-5": [
+      128, 129, 130, 131, 132, 133, 134, 135,
+      136, 137, 138, 139, 140, 141, 142, 143,
+      144, 145, 146, 147, 148, 149, 150, 151,
+      152, 153, 154, 155, 156, 157, 158, 159,
+      160, 1025, 1026, 1027, 1028, 1029, 1030, 1031,
+      1032, 1033, 1034, 1035, 1036, 173, 1038, 1039,
+      1040, 1041, 1042, 1043, 1044, 1045, 1046, 1047,
+      1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055,
+      1056, 1057, 1058, 1059, 1060, 1061, 1062, 1063,
+      1064, 1065, 1066, 1067, 1068, 1069, 1070, 1071,
+      1072, 1073, 1074, 1075, 1076, 1077, 1078, 1079,
+      1080, 1081, 1082, 1083, 1084, 1085, 1086, 1087,
+      1088, 1089, 1090, 1091, 1092, 1093, 1094, 1095,
+      1096, 1097, 1098, 1099, 1100, 1101, 1102, 1103,
+      8470, 1105, 1106, 1107, 1108, 1109, 1110, 1111,
+      1112, 1113, 1114, 1115, 1116, 167, 1118, 1119
+    ],
+    "ISO-8859-6": [
+      128, 129, 130, 131, 132, 133, 134, 135,
+      136, 137, 138, 139, 140, 141, 142, 143,
+      144, 145, 146, 147, 148, 149, 150, 151,
+      152, 153, 154, 155, 156, 157, 158, 159,
+      160, null, null, null, 164, null, null, null,
+      null, null, null, null, 1548, 173, null, null,
+      null, null, null, null, null, null, null, null,
+      null, null, null, 1563, null, null, null, 1567,
+      null, 1569, 1570, 1571, 1572, 1573, 1574, 1575,
+      1576, 1577, 1578, 1579, 1580, 1581, 1582, 1583,
+      1584, 1585, 1586, 1587, 1588, 1589, 1590, 1591,
+      1592, 1593, 1594, null, null, null, null, null,
+      1600, 1601, 1602, 1603, 1604, 1605, 1606, 1607,
+      1608, 1609, 1610, 1611, 1612, 1613, 1614, 1615,
+      1616, 1617, 1618, null, null, null, null, null,
+      null, null, null, null, null, null, null, null
+    ],
+    "ISO-8859-7": [
+      128, 129, 130, 131, 132, 133, 134, 135,
+      136, 137, 138, 139, 140, 141, 142, 143,
+      144, 145, 146, 147, 148, 149, 150, 151,
+      152, 153, 154, 155, 156, 157, 158, 159,
+      160, 8216, 8217, 163, 8364, 8367, 166, 167,
+      168, 169, 890, 171, 172, 173, null, 8213,
+      176, 177, 178, 179, 900, 901, 902, 183,
+      904, 905, 906, 187, 908, 189, 910, 911,
+      912, 913, 914, 915, 916, 917, 918, 919,
+      920, 921, 922, 923, 924, 925, 926, 927,
+      928, 929, null, 931, 932, 933, 934, 935,
+      936, 937, 938, 939, 940, 941, 942, 943,
+      944, 945, 946, 947, 948, 949, 950, 951,
+      952, 953, 954, 955, 956, 957, 958, 959,
+      960, 961, 962, 963, 964, 965, 966, 967,
+      968, 969, 970, 971, 972, 973, 974, null
+    ],
+    "ISO-8859-8": [
+      128, 129, 130, 131, 132, 133, 134, 135,
+      136, 137, 138, 139, 140, 141, 142, 143,
+      144, 145, 146, 147, 148, 149, 150, 151,
+      152, 153, 154, 155, 156, 157, 158, 159,
+      160, null, 162, 163, 164, 165, 166, 167,
+      168, 169, 215, 171, 172, 173, 174, 175,
+      176, 177, 178, 179, 180, 181, 182, 183,
+      184, 185, 247, 187, 188, 189, 190, null,
+      null, null, null, null, null, null, null, null,
+      null, null, null, null, null, null, null, null,
+      null, null, null, null, null, null, null, null,
+      null, null, null, null, null, null, null, 8215,
+      1488, 1489, 1490, 1491, 1492, 1493, 1494, 1495,
+      1496, 1497, 1498, 1499, 1500, 1501, 1502, 1503,
+      1504, 1505, 1506, 1507, 1508, 1509, 1510, 1511,
+      1512, 1513, 1514, null, null, 8206, 8207, null
+    ],
+    "ISO-8859-10": [
+      128, 129, 130, 131, 132, 133, 134, 135,
+      136, 137, 138, 139, 140, 141, 142, 143,
+      144, 145, 146, 147, 148, 149, 150, 151,
+      152, 153, 154, 155, 156, 157, 158, 159,
+      160, 260, 274, 290, 298, 296, 310, 167,
+      315, 272, 352, 358, 381, 173, 362, 330,
+      176, 261, 275, 291, 299, 297, 311, 183,
+      316, 273, 353, 359, 382, 8213, 363, 331,
+      256, 193, 194, 195, 196, 197, 198, 302,
+      268, 201, 280, 203, 278, 205, 206, 207,
+      208, 325, 332, 211, 212, 213, 214, 360,
+      216, 370, 218, 219, 220, 221, 222, 223,
+      257, 225, 226, 227, 228, 229, 230, 303,
+      269, 233, 281, 235, 279, 237, 238, 239,
+      240, 326, 333, 243, 244, 245, 246, 361,
+      248, 371, 250, 251, 252, 253, 254, 312
+    ],
+    "ISO-8859-13": [
+      128, 129, 130, 131, 132, 133, 134, 135,
+      136, 137, 138, 139, 140, 141, 142, 143,
+      144, 145, 146, 147, 148, 149, 150, 151,
+      152, 153, 154, 155, 156, 157, 158, 159,
+      160, 8221, 162, 163, 164, 8222, 166, 167,
+      216, 169, 342, 171, 172, 173, 174, 198,
+      176, 177, 178, 179, 8220, 181, 182, 183,
+      248, 185, 343, 187, 188, 189, 190, 230,
+      260, 302, 256, 262, 196, 197, 280, 274,
+      268, 201, 377, 278, 290, 310, 298, 315,
+      352, 323, 325, 211, 332, 213, 214, 215,
+      370, 321, 346, 362, 220, 379, 381, 223,
+      261, 303, 257, 263, 228, 229, 281, 275,
+      269, 233, 378, 279, 291, 311, 299, 316,
+      353, 324, 326, 243, 333, 245, 246, 247,
+      371, 322, 347, 363, 252, 380, 382, 8217
+    ],
+    "ISO-8859-14": [
+      128, 129, 130, 131, 132, 133, 134, 135,
+      136, 137, 138, 139, 140, 141, 142, 143,
+      144, 145, 146, 147, 148, 149, 150, 151,
+      152, 153, 154, 155, 156, 157, 158, 159,
+      160, 7682, 7683, 163, 266, 267, 7690, 167,
+      7808, 169, 7810, 7691, 7922, 173, 174, 376,
+      7710, 7711, 288, 289, 7744, 7745, 182, 7766,
+      7809, 7767, 7811, 7776, 7923, 7812, 7813, 7777,
+      192, 193, 194, 195, 196, 197, 198, 199,
+      200, 201, 202, 203, 204, 205, 206, 207,
+      372, 209, 210, 211, 212, 213, 214, 7786,
+      216, 217, 218, 219, 220, 221, 374, 223,
+      224, 225, 226, 227, 228, 229, 230, 231,
+      232, 233, 234, 235, 236, 237, 238, 239,
+      373, 241, 242, 243, 244, 245, 246, 7787,
+      248, 249, 250, 251, 252, 253, 375, 255
+    ],
+    "ISO-8859-15": [
+      128, 129, 130, 131, 132, 133, 134, 135,
+      136, 137, 138, 139, 140, 141, 142, 143,
+      144, 145, 146, 147, 148, 149, 150, 151,
+      152, 153, 154, 155, 156, 157, 158, 159,
+      160, 161, 162, 163, 8364, 165, 352, 167,
+      353, 169, 170, 171, 172, 173, 174, 175,
+      176, 177, 178, 179, 381, 181, 182, 183,
+      382, 185, 186, 187, 338, 339, 376, 191,
+      192, 193, 194, 195, 196, 197, 198, 199,
+      200, 201, 202, 203, 204, 205, 206, 207,
+      208, 209, 210, 211, 212, 213, 214, 215,
+      216, 217, 218, 219, 220, 221, 222, 223,
+      224, 225, 226, 227, 228, 229, 230, 231,
+      232, 233, 234, 235, 236, 237, 238, 239,
+      240, 241, 242, 243, 244, 245, 246, 247,
+      248, 249, 250, 251, 252, 253, 254, 255
+    ],
+    "ISO-8859-16": [
+      128, 129, 130, 131, 132, 133, 134, 135,
+      136, 137, 138, 139, 140, 141, 142, 143,
+      144, 145, 146, 147, 148, 149, 150, 151,
+      152, 153, 154, 155, 156, 157, 158, 159,
+      160, 260, 261, 321, 8364, 8222, 352, 167,
+      353, 169, 536, 171, 377, 173, 378, 379,
+      176, 177, 268, 322, 381, 8221, 182, 183,
+      382, 269, 537, 187, 338, 339, 376, 380,
+      192, 193, 194, 258, 196, 262, 198, 199,
+      200, 201, 202, 203, 204, 205, 206, 207,
+      272, 323, 210, 211, 212, 336, 214, 346,
+      368, 217, 218, 219, 220, 280, 538, 223,
+      224, 225, 226, 259, 228, 263, 230, 231,
+      232, 233, 234, 235, 236, 237, 238, 239,
+      273, 324, 242, 243, 244, 337, 246, 347,
+      369, 249, 250, 251, 252, 281, 539, 255
+    ],
+    "KOI8-R": [
+      9472, 9474, 9484, 9488, 9492, 9496, 9500, 9508,
+      9516, 9524, 9532, 9600, 9604, 9608, 9612, 9616,
+      9617, 9618, 9619, 8992, 9632, 8729, 8730, 8776,
+      8804, 8805, 160, 8993, 176, 178, 183, 247, 
+      9552, 9553, 9554, 1105, 9555, 9556, 9557, 9558, 
+      9559, 9560, 9561, 9562, 9563, 9564, 9565, 9566,
+      9567, 9568, 9569, 1025, 9570, 9571, 9572, 9573,
+      9574, 9575, 9576, 9577, 9578, 9579, 9580, 169,
+      1102, 1072, 1073, 1094, 1076, 1077, 1092, 1075,
+      1093, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
+      1087, 1103, 1088, 1089, 1090, 1091, 1078, 1074,
+      1100, 1099, 1079, 1096, 1101, 1097, 1095, 1098,
+      1070, 1040, 1041, 1062, 1044, 1045, 1060, 1043,
+      1061, 1048, 1049, 1050, 1051, 1052, 1053, 1054,
+      1055, 1071, 1056, 1057, 1058, 1059, 1046, 1042,
+      1068, 1067, 1047, 1064, 1069, 1065, 1063, 1066
+    ],
+    "KOI8-U": [
+      9472, 9474, 9484, 9488, 9492, 9496, 9500, 9508,
+      9516, 9524, 9532, 9600, 9604, 9608, 9612, 9616,
+      9617, 9618, 9619, 8992, 9632, 8729, 8730, 8776,
+      8804, 8805, 160, 8993, 176, 178, 183, 247,
+      9552, 9553, 9554, 1105, 1108, 9556, 1110, 1111,
+      9559, 9560, 9561, 9562, 9563, 1169, 1118, 9566,
+      9567, 9568, 9569, 1025, 1028, 9571, 1030, 1031,
+      9574, 9575, 9576, 9577, 9578, 1168, 1038, 169,
+      1102, 1072, 1073, 1094, 1076, 1077, 1092, 1075,
+      1093, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
+      1087, 1103, 1088, 1089, 1090, 1091, 1078, 1074,
+      1100, 1099, 1079, 1096, 1101, 1097, 1095, 1098,
+      1070, 1040, 1041, 1062, 1044, 1045, 1060, 1043,
+      1061, 1048, 1049, 1050, 1051, 1052, 1053, 1054,
+      1055, 1071, 1056, 1057, 1058, 1059, 1046, 1042,
+      1068, 1067, 1047, 1064, 1069, 1065, 1063, 1066
+    ],
+    "macintosh": [
+      196, 197, 199, 201, 209, 214, 220, 225,
+      224, 226, 228, 227, 229, 231, 233, 232,
+      234, 235, 237, 236, 238, 239, 241, 243,
+      242, 244, 246, 245, 250, 249, 251, 252,
+      8224, 176, 162, 163, 167, 8226, 182, 223,
+      174, 169, 8482, 180, 168, 8800, 198, 216,
+      8734, 177, 8804, 8805, 165, 181, 8706, 8721,
+      8719, 960, 8747, 170, 186, 937, 230, 248,
+      191, 161, 172, 8730, 402, 8776, 8710, 171,
+      187, 8230, 160, 192, 195, 213, 338, 339,
+      8211, 8212, 8220, 8221, 8216, 8217, 247, 9674,
+      255, 376, 8260, 8364, 8249, 8250, 64257, 64258,
+      8225, 183, 8218, 8222, 8240, 194, 202, 193,
+      203, 200, 205, 206, 207, 204, 211, 212,
+      63743, 210, 218, 219, 217, 305, 710, 732,
+      175, 728, 729, 730, 184, 733, 731, 711
+    ],
+    "windows-874": [
+      8364, 129, 130, 131, 132, 8230, 134, 135,
+      136, 137, 138, 139, 140, 141, 142, 143,
+      144, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+      152, 153, 154, 155, 156, 157, 158, 159,
+      160, 3585, 3586, 3587, 3588, 3589, 3590, 3591,
+      3592, 3593, 3594, 3595, 3596, 3597, 3598, 3599,
+      3600, 3601, 3602, 3603, 3604, 3605, 3606, 3607,
+      3608, 3609, 3610, 3611, 3612, 3613, 3614, 3615,
+      3616, 3617, 3618, 3619, 3620, 3621, 3622, 3623,
+      3624, 3625, 3626, 3627, 3628, 3629, 3630, 3631,
+      3632, 3633, 3634, 3635, 3636, 3637, 3638, 3639,
+      3640, 3641, 3642, null, null, null, null, 3647,
+      3648, 3649, 3650, 3651, 3652, 3653, 3654, 3655,
+      3656, 3657, 3658, 3659, 3660, 3661, 3662, 3663,
+      3664, 3665, 3666, 3667, 3668, 3669, 3670, 3671,
+      3672, 3673, 3674, 3675, null, null, null, null
+    ],
+    "windows-1250": [
+      8364, 129, 8218, 131, 8222, 8230, 8224, 8225,
+      136, 8240, 352, 8249, 346, 356, 381, 377,
+      144, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+      152, 8482, 353, 8250, 347, 357, 382, 378,
+      160, 711, 728, 321, 164, 260, 166, 167,
+      168, 169, 350, 171, 172, 173, 174, 379,
+      176, 177, 731, 322, 180, 181, 182, 183,
+      184, 261, 351, 187, 317, 733, 318, 380,
+      340, 193, 194, 258, 196, 313, 262, 199,
+      268, 201, 280, 203, 282, 205, 206, 270,
+      272, 323, 327, 211, 212, 336, 214, 215,
+      344, 366, 218, 368, 220, 221, 354, 223,
+      341, 225, 226, 259, 228, 314, 263, 231,
+      269, 233, 281, 235, 283, 237, 238, 271,
+      273, 324, 328, 243, 244, 337, 246, 247,
+      345, 367, 250, 369, 252, 253, 355, 729
+    ],
+    "windows-1251": [
+      1026, 1027, 8218, 1107, 8222, 8230, 8224, 8225,
+      8364, 8240, 1033, 8249, 1034, 1036, 1035, 1039,
+      1106, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+      152, 8482, 1113, 8250, 1114, 1116, 1115, 1119,
+      160, 1038, 1118, 1032, 164, 1168, 166, 167,
+      1025, 169, 1028, 171, 172, 173, 174, 1031,
+      176, 177, 1030, 1110, 1169, 181, 182, 183,
+      1105, 8470, 1108, 187, 1112, 1029, 1109, 1111,
+      1040, 1041, 1042, 1043, 1044, 1045, 1046, 1047,
+      1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055,
+      1056, 1057, 1058, 1059, 1060, 1061, 1062, 1063,
+      1064, 1065, 1066, 1067, 1068, 1069, 1070, 1071,
+      1072, 1073, 1074, 1075, 1076, 1077, 1078, 1079,
+      1080, 1081, 1082, 1083, 1084, 1085, 1086, 1087,
+      1088, 1089, 1090, 1091, 1092, 1093, 1094, 1095,
+      1096, 1097, 1098, 1099, 1100, 1101, 1102, 1103
+    ],
+    "windows-1252": [
+      8364, 129, 8218, 402, 8222, 8230, 8224, 8225,
+      710, 8240, 352, 8249, 338, 141, 381, 143,
+      144, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+      732, 8482, 353, 8250, 339, 157, 382, 376,
+      160, 161, 162, 163, 164, 165, 166, 167,
+      168, 169, 170, 171, 172, 173, 174, 175,
+      176, 177, 178, 179, 180, 181, 182, 183,
+      184, 185, 186, 187, 188, 189, 190, 191,
+      192, 193, 194, 195, 196, 197, 198, 199,
+      200, 201, 202, 203, 204, 205, 206, 207,
+      208, 209, 210, 211, 212, 213, 214, 215,
+      216, 217, 218, 219, 220, 221, 222, 223,
+      224, 225, 226, 227, 228, 229, 230, 231,
+      232, 233, 234, 235, 236, 237, 238, 239,
+      240, 241, 242, 243, 244, 245, 246, 247,
+      248, 249, 250, 251, 252, 253, 254, 255
+    ],
+    "windows-1253": [
+      8364, 129, 8218, 402, 8222, 8230, 8224, 8225,
+      136, 8240, 138, 8249, 140, 141, 142, 143,
+      144, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+      152, 8482, 154, 8250, 156, 157, 158, 159,
+      160, 901, 902, 163, 164, 165, 166, 167,
+      168, 169, null, 171, 172, 173, 174, 8213,
+      176, 177, 178, 179, 900, 181, 182, 183,
+      904, 905, 906, 187, 908, 189, 910, 911,
+      912, 913, 914, 915, 916, 917, 918, 919,
+      920, 921, 922, 923, 924, 925, 926, 927,
+      928, 929, null, 931, 932, 933, 934, 935,
+      936, 937, 938, 939, 940, 941, 942, 943,
+      944, 945, 946, 947, 948, 949, 950, 951,
+      952, 953, 954, 955, 956, 957, 958, 959,
+      960, 961, 962, 963, 964, 965, 966, 967,
+      968, 969, 970, 971, 972, 973, 974, null
+    ],
+    "windows-1254": [
+      8364, 129, 8218, 402, 8222, 8230, 8224, 8225,
+      710, 8240, 352, 8249, 338, 141, 142, 143,
+      144, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+      732, 8482, 353, 8250, 339, 157, 158, 376,
+      160, 161, 162, 163, 164, 165, 166, 167,
+      168, 169, 170, 171, 172, 173, 174, 175,
+      176, 177, 178, 179, 180, 181, 182, 183,
+      184, 185, 186, 187, 188, 189, 190, 191,
+      192, 193, 194, 195, 196, 197, 198, 199,
+      200, 201, 202, 203, 204, 205, 206, 207,
+      286, 209, 210, 211, 212, 213, 214, 215,
+      216, 217, 218, 219, 220, 304, 350, 223,
+      224, 225, 226, 227, 228, 229, 230, 231,
+      232, 233, 234, 235, 236, 237, 238, 239,
+      287, 241, 242, 243, 244, 245, 246, 247,
+      248, 249, 250, 251, 252, 305, 351, 255
+    ],
+    "windows-1255": [
+      8364, 129, 8218, 402, 8222, 8230, 8224, 8225,
+      710, 8240, 138, 8249, 140, 141, 142, 143,
+      144, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+      732, 8482, 154, 8250, 156, 157, 158, 159,
+      160, 161, 162, 163, 8362, 165, 166, 167,
+      168, 169, 215, 171, 172, 173, 174, 175,
+      176, 177, 178, 179, 180, 181, 182, 183,
+      184, 185, 247, 187, 188, 189, 190, 191,
+      1456, 1457, 1458, 1459, 1460, 1461, 1462, 1463,
+      1464, 1465, 1466, 1467, 1468, 1469, 1470, 1471,
+      1472, 1473, 1474, 1475, 1520, 1521, 1522, 1523,
+      1524, null, null, null, null, null, null, null,
+      1488, 1489, 1490, 1491, 1492, 1493, 1494, 1495,
+      1496, 1497, 1498, 1499, 1500, 1501, 1502, 1503,
+      1504, 1505, 1506, 1507, 1508, 1509, 1510, 1511,
+      1512, 1513, 1514, null, null, 8206, 8207, null
+    ],
+    "windows-1256": [
+      8364, 1662, 8218, 402, 8222, 8230, 8224, 8225,
+      710, 8240, 1657, 8249, 338, 1670, 1688, 1672,
+      1711, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+      1705, 8482, 1681, 8250, 339, 8204, 8205, 1722,
+      160, 1548, 162, 163, 164, 165, 166, 167,
+      168, 169, 1726, 171, 172, 173, 174, 175,
+      176, 177, 178, 179, 180, 181, 182, 183,
+      184, 185, 1563, 187, 188, 189, 190, 1567,
+      1729, 1569, 1570, 1571, 1572, 1573, 1574, 1575,
+      1576, 1577, 1578, 1579, 1580, 1581, 1582, 1583,
+      1584, 1585, 1586, 1587, 1588, 1589, 1590, 215,
+      1591, 1592, 1593, 1594, 1600, 1601, 1602, 1603,
+      224, 1604, 226, 1605, 1606, 1607, 1608, 231,
+      232, 233, 234, 235, 1609, 1610, 238, 239,
+      1611, 1612, 1613, 1614, 244, 1615, 1616, 247,
+      1617, 249, 1618, 251, 252, 8206, 8207, 1746
+    ],
+    "windows-1257": [
+      8364, 129, 8218, 131, 8222, 8230, 8224, 8225,
+      136, 8240, 138, 8249, 140, 168, 711, 184, 144,
+      8216, 8217, 8220, 8221, 8226, 8211, 8212, 152,
+      8482, 154, 8250, 156, 175, 731, 159, 160,
+      null, 162, 163, 164, null, 166, 167, 216,
+      169, 342, 171, 172, 173, 174, 198, 176,
+      177, 178, 179, 180, 181, 182, 183, 248,
+      185, 343, 187, 188, 189, 190, 230, 260,
+      302, 256, 262, 196, 197, 280, 274, 268,
+      201, 377, 278, 290, 310, 298, 315, 352,
+      323, 325, 211, 332, 213, 214, 215, 370,
+      321, 346, 362, 220, 379, 381, 223, 261,
+      303, 257, 263, 228, 229, 281, 275, 269,
+      233, 378, 279, 291, 311, 299, 316, 353,
+      324, 326, 243, 333, 245, 246, 247, 371,
+      322, 347, 363, 252, 380, 382, 729
+    ],
+    "windows-1258": [
+      8364, 129, 8218, 402, 8222, 8230, 8224, 8225,
+      710, 8240, 138, 8249, 338, 141, 142, 143,
+      144, 8216, 8217, 8220, 8221, 8226, 8211, 8212,
+      732, 8482, 154, 8250, 339, 157, 158, 376,
+      160, 161, 162, 163, 164, 165, 166, 167,
+      168, 169, 170, 171, 172, 173, 174, 175,
+      176, 177, 178, 179, 180, 181, 182, 183,
+      184, 185, 186, 187, 188, 189, 190, 191,
+      192, 193, 194, 258, 196, 197, 198, 199,
+      200, 201, 202, 203, 768, 205, 206, 207,
+      272, 209, 777, 211, 212, 416, 214, 215,
+      216, 217, 218, 219, 220, 431, 771, 223,
+      224, 225, 226, 259, 228, 229, 230, 231,
+      232, 233, 234, 235, 769, 237, 238, 239,
+      273, 241, 803, 243, 244, 417, 246, 247,
+      248, 249, 250, 251, 252, 432, 8363, 255
+    ],
+    "x-mac-cyrillic": [
+      1040, 1041, 1042, 1043, 1044, 1045, 1046, 1047,
+      1048, 1049, 1050, 1051, 1052, 1053, 1054, 1055,
+      1056, 1057, 1058, 1059, 1060, 1061, 1062, 1063,
+      1064, 1065, 1066, 1067, 1068, 1069, 1070, 1071,
+      8224, 176, 1168, 163, 167, 8226, 182, 1030,
+      174, 169, 8482, 1026, 1106, 8800, 1027, 1107,
+      8734, 177, 8804, 8805, 1110, 181, 1169, 1032,
+      1028, 1108, 1031, 1111, 1033, 1113, 1034, 1114,
+      1112, 1029, 172, 8730, 402, 8776, 8710, 171,
+      187, 8230, 160, 1035, 1115, 1036, 1116, 1109,
+      8211, 8212, 8220, 8221, 8216, 8217, 247, 8222,
+      1038, 1118, 1039, 1119, 8470, 1025, 1105, 1103,
+      1072, 1073, 1074, 1075, 1076, 1077, 1078, 1079,
+      1080, 1081, 1082, 1083, 1084, 1085, 1086, 1087,
+      1088, 1089, 1090, 1091, 1092, 1093, 1094, 1095,
+      1096, 1097, 1098, 1099, 1100, 1101, 1102, 8364
+    ],
+  }
+
+  function assertDecode(data, encoding) {
+    if (encoding == "ISO-8859-8-I") {
+      encoding = "ISO-8859-8";
+    }
+    for (let i = 0, l = data.length; i < l; i++) {
+      const cp = data.charCodeAt(i);
+      let expectedCp = i < 0x80 ? i : singleByteIndexes[encoding][i - 0x80];
+      if (expectedCp == null) {
+        expectedCp = 0xfffd;
+      }
+      // assertEquals(cp, expectedCp, encoding + ":" + i);
+      assert(cp === expectedCp);
+    }
+  }
+
+  const buffer = new ArrayBuffer(255);
+  const view = new Uint8Array(buffer);
+
+  for (let i = 0, l = view.byteLength; i < l; i++) {
+    view[i] = i;
+  }
+
+  for (let i = 0, l = singleByteEncodings.length; i < l; i++) {
+    const encoding = singleByteEncodings[i];
+    for (let i2 = 0, l2 = encoding.labels.length; i2 < l2; i2++) {
+      const label = encoding.labels[i2];
+      const decoder = new TextDecoder(label);
+      const data = decoder.decode(view);
+
+      assert(decoder.encoding === encoding.name.toLowerCase());
+      assertDecode(data, encoding.name);
+    }
+  }
+}
+
 function main() {
   btoaSuccess();
   atobSuccess();
@@ -279,6 +1255,7 @@ function main() {
   textDecoderSharedUint8Array();
   textDecoderSharedInt32Array();
   toStringShouldBeWebCompatibility();
+  singleByteEncodings();
 }
 
 main();