js-awe/dist/mjs/anonymize.js

Awesome js utils including - plan: An Asynchronous control flow with a functional taste - Chrono: record and visualize timelines in the console

const dict = {
    upperLetters: ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'],
    lowerLetters: ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'],
    numbers: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
};
function anonymize(toAnonymize) {
    let changes = 0;
    const result = toAnonymize
        .split('')
        .map(char => {
        let toReturn;
        const type = getTypeDict(char);
        if (type)
            toReturn = type[getRandomInt(type.length - 1)];
        else
            toReturn = char;
        if (toReturn !== char)
            changes++;
        return toReturn;
    })
        .join('');
    if (changes < toAnonymize.length / 2)
        return Array.from({ length: result.length }).fill('*').join('');
    return result;
}
function getRandomInt(max) {
    return Math.floor(Math.random() * Math.floor(max));
}
function getTypeDict(char) {
    const type = char.charCodeAt();
    if (type > 47 && type < 58)
        return dict.numbers;
    if (type > 64 && type < 91)
        return dict.upperLetters;
    if (type > 96 && type < 123)
        return dict.lowerLetters;
    return undefined;
}
export { anonymize };