7-bit GSM 03.38 <-> Unicode Map in JS

example.js

// Unicode to 7-bit GSM
const write = 'Hello, Faisalman!';
const msgSubmit = Array.from(write)
  .map(char => Unicode2GSM[char].toString(16))
  .join(' ');
console.log(msgSubmit);     // "48 65 6C 6C 6F 2C 20 46 61 69 73 61 6C 6D 61 6E 21"

// 7-bit GSM to Unicode
const read = "48 65 6C 6C 6F 2C 20 46 61 69 73 61 6C 6D 61 6E 21";
const msgReceived = read.split(' ')
  .map(hex => GSM2Unicode[parseInt(hex, 16)] || '')
  .join('');
console.log(msgReceived);   // "Hello, Faisalman!"

gsm-unicode.js

/**
 *  Convert From/To GSM03.38/Unicode in JavaScript
 *  Mapping source: ftp://ftp.unicode.org/Public/MAPPINGS/ETSI/GSM0338.TXT
 *  https://gist.github.com/faisalman
 *
 *  Copyright 2013, Faisalman <fyzlman@gmail.com>
 *  Licensed under The MIT License
 *  http://www.opensource.org/licenses/mit-license
 *
 *  Modified by Adi Li to adopt modern JavaScript style
 */


const GSM2Unicode = {
  0x00 : "\u0040", // COMMERCIAL AT
  0x01 : "\u00A3", // POUND SIGN
  0x02 : "\u0024", // DOLLAR SIGN
  0x03 : "\u00A5", // YEN SIGN
  0x04 : "\u00E8", // LATIN SMALL LETTER E WITH GRAVE
  0x05 : "\u00E9", // LATIN SMALL LETTER E WITH ACUTE
  0x06 : "\u00F9", // LATIN SMALL LETTER U WITH GRAVE
  0x07 : "\u00EC", // LATIN SMALL LETTER I WITH GRAVE
  0x08 : "\u00F2", // LATIN SMALL LETTER O WITH GRAVE
  0x09 : "\u00E7", // LATIN SMALL LETTER C WITH CEDILLA
  0x0A : "\u000A", // LINE FEED
  0x0B : "\u00D8", // LATIN CAPITAL LETTER O WITH STROKE
  0x0C : "\u00F8", // LATIN SMALL LETTER O WITH STROKE
  0x0D : "\u000D", // CARRIAGE RETURN
  0x0E : "\u00C5", // LATIN CAPITAL LETTER A WITH RING ABOVE
  0x0F : "\u00E5", // LATIN SMALL LETTER A WITH RING ABOVE
  0x10 : "\u0394", // GREEK CAPITAL LETTER DELTA
  0x11 : "\u005F", // LOW LINE
  0x12 : "\u03A6", // GREEK CAPITAL LETTER PHI
  0x13 : "\u0393", // GREEK CAPITAL LETTER GAMMA
  0x14 : "\u039B", // GREEK CAPITAL LETTER LAMDA
  0x15 : "\u03A9", // GREEK CAPITAL LETTER OMEGA
  0x16 : "\u03A0", // GREEK CAPITAL LETTER PI
  0x17 : "\u03A8", // GREEK CAPITAL LETTER PSI
  0x18 : "\u03A3", // GREEK CAPITAL LETTER SIGMA
  0x19 : "\u0398", // GREEK CAPITAL LETTER THETA
  0x1A : "\u039E", // GREEK CAPITAL LETTER XI
  0x1B : "\u00A0", // ESCAPE TO EXTENSION TABLE
  0x1C : "\u00C6", // LATIN CAPITAL LETTER AE
  0x1D : "\u00E6", // LATIN SMALL LETTER AE
  0x1E : "\u00DF", // LATIN SMALL LETTER SHARP S (German)
  0x1F : "\u00C9", // LATIN CAPITAL LETTER E WITH ACUTE
  0x20 : "\u0020", // SPACE
  0x21 : "\u0021", // EXCLAMATION MARK
  0x22 : "\u0022", // QUOTATION MARK
  0x23 : "\u0023", // NUMBER SIGN
  0x24 : "\u00A4", // CURRENCY SIGN
  0x25 : "\u0025", // PERCENT SIGN
  0x26 : "\u0026", // AMPERSAND
  0x27 : "\u0027", // APOSTROPHE
  0x28 : "\u0028", // LEFT PARENTHESIS
  0x29 : "\u0029", // RIGHT PARENTHESIS
  0x2A : "\u002A", // ASTERISK
  0x2B : "\u002B", // PLUS SIGN
  0x2C : "\u002C", // COMMA
  0x2D : "\u002D", // HYPHEN-MINUS
  0x2E : "\u002E", // FULL STOP
  0x2F : "\u002F", // SOLIDUS
  0x30 : "\u0030", // DIGIT ZERO
  0x31 : "\u0031", // DIGIT ONE
  0x32 : "\u0032", // DIGIT TWO
  0x33 : "\u0033", // DIGIT THREE
  0x34 : "\u0034", // DIGIT FOUR
  0x35 : "\u0035", // DIGIT FIVE
  0x36 : "\u0036", // DIGIT SIX
  0x37 : "\u0037", // DIGIT SEVEN
  0x38 : "\u0038", // DIGIT EIGHT
  0x39 : "\u0039", // DIGIT NINE
  0x3A : "\u003A", // COLON
  0x3B : "\u003B", // SEMICOLON
  0x3C : "\u003C", // LESS-THAN SIGN
  0x3D : "\u003D", // EQUALS SIGN
  0x3E : "\u003E", // GREATER-THAN SIGN
  0x3F : "\u003F", // QUESTION MARK
  0x40 : "\u00A1", // INVERTED EXCLAMATION MARK
  0x41 : "\u0041", // LATIN CAPITAL LETTER A
  0x42 : "\u0042", // LATIN CAPITAL LETTER B
  0x43 : "\u0043", // LATIN CAPITAL LETTER C
  0x44 : "\u0044", // LATIN CAPITAL LETTER D
  0x45 : "\u0045", // LATIN CAPITAL LETTER E
  0x46 : "\u0046", // LATIN CAPITAL LETTER F
  0x47 : "\u0047", // LATIN CAPITAL LETTER G
  0x48 : "\u0048", // LATIN CAPITAL LETTER H
  0x49 : "\u0049", // LATIN CAPITAL LETTER I
  0x4A : "\u004A", // LATIN CAPITAL LETTER J
  0x4B : "\u004B", // LATIN CAPITAL LETTER K
  0x4C : "\u004C", // LATIN CAPITAL LETTER L
  0x4D : "\u004D", // LATIN CAPITAL LETTER M
  0x4E : "\u004E", // LATIN CAPITAL LETTER N
  0x4F : "\u004F", // LATIN CAPITAL LETTER O
  0x50 : "\u0050", // LATIN CAPITAL LETTER P
  0x51 : "\u0051", // LATIN CAPITAL LETTER Q
  0x52 : "\u0052", // LATIN CAPITAL LETTER R
  0x53 : "\u0053", // LATIN CAPITAL LETTER S
  0x54 : "\u0054", // LATIN CAPITAL LETTER T
  0x55 : "\u0055", // LATIN CAPITAL LETTER U
  0x56 : "\u0056", // LATIN CAPITAL LETTER V
  0x57 : "\u0057", // LATIN CAPITAL LETTER W
  0x58 : "\u0058", // LATIN CAPITAL LETTER X
  0x59 : "\u0059", // LATIN CAPITAL LETTER Y
  0x5A : "\u005A", // LATIN CAPITAL LETTER Z
  0x5B : "\u00C4", // LATIN CAPITAL LETTER A WITH DIAERESIS
  0x5C : "\u00D6", // LATIN CAPITAL LETTER O WITH DIAERESIS
  0x5D : "\u00D1", // LATIN CAPITAL LETTER N WITH TILDE
  0x5E : "\u00DC", // LATIN CAPITAL LETTER U WITH DIAERESIS
  0x5F : "\u00A7", // SECTION SIGN
  0x60 : "\u00BF", // INVERTED QUESTION MARK
  0x61 : "\u0061", // LATIN SMALL LETTER A
  0x62 : "\u0062", // LATIN SMALL LETTER B
  0x63 : "\u0063", // LATIN SMALL LETTER C
  0x64 : "\u0064", // LATIN SMALL LETTER D
  0x65 : "\u0065", // LATIN SMALL LETTER E
  0x66 : "\u0066", // LATIN SMALL LETTER F
  0x67 : "\u0067", // LATIN SMALL LETTER G
  0x68 : "\u0068", // LATIN SMALL LETTER H
  0x69 : "\u0069", // LATIN SMALL LETTER I
  0x6A : "\u006A", // LATIN SMALL LETTER J
  0x6B : "\u006B", // LATIN SMALL LETTER K
  0x6C : "\u006C", // LATIN SMALL LETTER L
  0x6D : "\u006D", // LATIN SMALL LETTER M
  0x6E : "\u006E", // LATIN SMALL LETTER N
  0x6F : "\u006F", // LATIN SMALL LETTER O
  0x70 : "\u0070", // LATIN SMALL LETTER P
  0x71 : "\u0071", // LATIN SMALL LETTER Q
  0x72 : "\u0072", // LATIN SMALL LETTER R
  0x73 : "\u0073", // LATIN SMALL LETTER S
  0x74 : "\u0074", // LATIN SMALL LETTER T
  0x75 : "\u0075", // LATIN SMALL LETTER U
  0x76 : "\u0076", // LATIN SMALL LETTER V
  0x77 : "\u0077", // LATIN SMALL LETTER W
  0x78 : "\u0078", // LATIN SMALL LETTER X
  0x79 : "\u0079", // LATIN SMALL LETTER Y
  0x7A : "\u007A", // LATIN SMALL LETTER Z
  0x7B : "\u00E4", // LATIN SMALL LETTER A WITH DIAERESIS
  0x7C : "\u00F6", // LATIN SMALL LETTER O WITH DIAERESIS
  0x7D : "\u00F1", // LATIN SMALL LETTER N WITH TILDE
  0x7E : "\u00FC", // LATIN SMALL LETTER U WITH DIAERESIS
  0x7F : "\u00E0", // LATIN SMALL LETTER A WITH GRAVE
};


const Unicode2GSM = Object.entries(GSM2Unicode)
  .reduce((acc, [key, value]) => ({
    ...acc, [value]: parseInt(key)
  }), {});