Add components

slider/node_modules/eslint/lib/shared/string-utils.js

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+/**
+ * @fileoverview Utilities to operate on strings.
+ * @author Stephen Wade
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+// eslint-disable-next-line no-control-regex -- intentionally including control characters
+const ASCII_REGEX = /^[\u0000-\u007f]*$/u;
+
+/** @type {Intl.Segmenter | undefined} */
+let segmenter;
+
+//------------------------------------------------------------------------------
+// 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;
+	}
+
+	segmenter ??= new Intl.Segmenter("en-US"); // en-US locale should be supported everywhere
+	let graphemeCount = 0;
+
+	// eslint-disable-next-line no-unused-vars -- for-of needs a variable
+	for (const unused of segmenter.segment(value)) {
+		graphemeCount++;
+	}
+
+	return graphemeCount;
+}
+
+module.exports = {
+	upperCaseFirst,
+	getGraphemeCount,
+};