validations-br/lib/validations/utils.cjs

A validator to BR informations

//#region src/validations/utils.ts
/**
* The function `isRepeated` checks if a given string consists of repeated characters.
* @param {string} ref - The `ref` parameter is a string that you want to check for repeated
* characters.
* @returns a boolean value.
*/
const isRepeated = (ref) => {
	return ref.replace(new RegExp(ref[0], "g"), "").trim().length === 0;
};
/**
* The `mod11` function calculates the MOD11 checksum for a given value with a specified limit.
* @param {string} clearValue - The `clearValue` parameter is a string that represents the numeric
* value for which you want to calculate the MOD11 checksum. It should not contain any non-digit
* characters.
* @param {number} limite - The `limite` parameter in the `mod11` function represents the upper limit
* for the multiplier used in the calculation. The multiplier starts at 2 and increments by 1 for each
* digit of the input `clearValue`. When the multiplier exceeds the `limite`, it resets back to 2.
* @returns The `mod11` function returns a number, which is the calculated check digit (DV).
*/
const mod11 = (clearValue, limite) => {
	const valor = String(clearValue).replace(/\D/g, "");
	let sum = 0;
	let mult = 2;
	for (let i = valor.length - 1; i >= 0; i--) {
		sum += mult * +valor[i];
		if (++mult > limite) mult = 2;
	}
	return sum * 10 % 11 % 10;
};

//#endregion
exports.isRepeated = isRepeated;
exports.mod11 = mod11;