logitar-validation/dist/rules/uniqueCharacters.js

JavaScript validation library distributed by Logitar.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * A validation rule that checks if a string contains a minimum number of unique characters.
 * @param value The value to validate.
 * @param args The minimum number of unique characters.
 * @returns The result of the validation rule execution.
 */
const uniqueCharacters = (value, args) => {
    const uniqueCharacters = Number(args);
    if (isNaN(uniqueCharacters) || uniqueCharacters <= 0) {
        return { severity: "warning", message: "The arguments should be a positive number." };
    }
    if (typeof value !== "string") {
        return { severity: "error", message: "{{name}} must be a string." };
    }
    else if (value.length > 0) {
        const count = [...new Set(value)].length;
        if (count < uniqueCharacters) {
            return { severity: "error", message: "{{name}} must contain at least {{uniqueCharacters}} unique character(s)." };
        }
    }
    return { severity: "information" };
};
exports.default = uniqueCharacters;