Bug fix

bjspell_creator_node.js

var fs = require('fs');
var file_name = 'ru_RU'

BJSpell = {
    create: function() {
        files = {
            dic: fs.readFileSync('dictionary/' + file_name + '.dic', 'utf8'),
            aff: fs.readFileSync('dictionary/' + file_name + '.aff', 'utf8'),
        }

        var global = 'BJSpell.' + file_name + '=' + this.dic(files.dic.split(/\r\n|\r|\n/));
        fs.writeFileSync('dictionary.js/' + file_name + '.js', global.substring(0, global.length - 1).concat(",rules:",
            this.aff(files.aff.split(/\r\n|\r|\n/)), "}"), {
            flag: 'w'
        });

    },
    aff: function(lines) {
        for (var rules = {
                PFX: [],
                SFX: []
            },
                i = 0,
                length = lines.length,
                line; i < length; i++
        ) {
            line = lines[i];
            switch (line.substr(0, 3)) {
                case "PFX":
                case "SFX":
                    var type = line.substr(0, 3),
                        name = line.substr(4, 1),
                        product = line.substr(6, 1) === "Y",
                        many = i + (line.substring(8) >> 0),
                        referer = rules[type],
                        j = i,
                        info;
                    while (j++ < many)
                        referer[referer.length] = lines[j].substring(8).split(/\s+/).slice(0, 3).concat([name]);
                    i = j;
                    break;
            }
        };
        return JSON.stringify(rules);
    },
    dic: function(lines) {
        for (var ignore = String.fromCharCode(65533),
                dictionary = {},
                alphabet = {},
                i = 1,
                length = lines.length,
                re = "/\\b[",
                line, split, key; i < length; i++
        ) {
            line = lines[i].replace(/^\s+|\s+$/g, "");
            if (line.length) {
                split = line.split("/");
                line = split[0].toLowerCase();
                if (line !== ignore) {
                    dictionary[line] = split[1] || true;
                    for (var j = 0, c; j < line.length; j++)
                        alphabet[line.charAt(j)] = true;
                }
            }
        };
        for (key in alphabet) {
            if (key !== ignore && /[^\.\-\_\,\/\:\;\@\?\=\+\-\*£$^\(\)\[\]\{\}~<>]/.test(key))
                re += key;
        };
        re += "]+\\b/ig";
        alphabet = {
            words: dictionary,
            alphabet: null
        };
        line = JSON.stringify(alphabet);
        return line.substring(0, line.length - 5).concat(re, "}");
    },
};

BJSpell.create();

Original script:
https://code.google.com/archive/p/bjspell/issues/4
maheshmurag/bjspell#4