MCP Agent TypeScript Port

/** * @fileoverview Utilities to operate on strings. * @author Stephen Wade */ "use strict"; //------------------------------------------------------------------------------ // Requirements //------------------------------------------------------------------------------ const Graphemer = require("graphemer").default; //------------------------------------------------------------------------------ // Helpers //------------------------------------------------------------------------------ // eslint-disable-next-line no-control-regex -- intentionally including control characters const ASCII_REGEX = /^[\u0000-\u007f]*$/u; /** @type {Graphemer | undefined} */ let splitter; //------------------------------------------------------------------------------ // Public Interface //------------------------------------------------------------------------------ /** * Converts the first letter of a string to uppercase. * @param {string} string The string to operate on * @returns {string} The converted string */ function upperCaseFirst(string) { if (string.length <= 1) { return string.toUpperCase(); } return string[0].toUpperCase() + string.slice(1); } /** * Counts graphemes in a given string. * @param {string} value A string to count graphemes. * @returns {number} The number of graphemes in `value`. */ function getGraphemeCount(value) { if (ASCII_REGEX.test(value)) { return value.length; } if (!splitter) { splitter = new Graphemer(); } return splitter.countGraphemes(value); } module.exports = { upperCaseFirst, getGraphemeCount };