stringzy/dist/transformations/maskSegment.js

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

"use strict";
/**
 * Hides a segment of a string by replacing it with a specified character.
 * @param text The input string.
 * @param maskStart The start index of the segment to mask (inclusive). Defaults to 0.
 * @param maskEnd The end index of the segment to mask (exclusive). Defaults to text.length.
 * @param maskChar The character to use for masking. Defaults to '*'.
 * @returns The string with the specified segment masked.
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.maskSegment = maskSegment;
function maskSegment(text, maskStart = 0, maskEnd = text.length, maskChar = "*") {
    if (maskStart < 0 || maskEnd > text.length || maskStart >= maskEnd) {
        throw new Error("Invalid mask segment range");
    }
    if (maskChar.length !== 1) {
        throw new Error("Mask character must be a single character");
    }
    if (maskStart === 0 && maskEnd === text.length) {
        return maskChar.repeat(text.length);
    }
    return (text.slice(0, maskStart) +
        maskChar.repeat(maskEnd - maskStart) +
        text.slice(maskEnd));
}