stringzy/dist/analyzing/complexity.js

A versatile string manipulation library providing a range of text utilities for JavaScript and Node.js applications.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.complexity = complexity;
function complexity(str) {
    if (!str)
        return { score: 0, uniqueness: 0, length: 0 };
    if (typeof str !== "string") {
        throw new TypeError("Input must be a string");
    }
    const length = str.length;
    const unique = new Set(str).size;
    const uniqueness = unique / length;
    let typeScore = 0;
    if (/[a-z]/.test(str))
        typeScore += 0.25;
    if (/[A-Z]/.test(str))
        typeScore += 0.25;
    if (/[0-9]/.test(str))
        typeScore += 0.25;
    if (/[^a-zA-Z0-9]/.test(str))
        typeScore += 0.25;
    // Calculate score based on length and character diversity
    const lengthScore = Math.min(1, length / 20); // Max score at 20 chars
    const score = uniqueness * 0.4 + typeScore * 0.4 + lengthScore * 0.2;
    return {
        score: parseFloat(score.toFixed(2)),
        uniqueness: parseFloat(uniqueness.toFixed(2)),
        length,
    };
}