add convertion string cases

src/index.ts

@@ -1,2 +1,3 @@
 export * from "./match-pattern";
-export * from "./optional-pattern";
+export * from "./optional-pattern";
+export * from "./string";

src/string/index.ts

@@ -0,0 +1 @@
+export * from "./naming-convention";

src/string/naming-convention.ts

@@ -0,0 +1,65 @@
+/**
+ * Converts a string from any case (camelCase, PascalCase, kebab-case, snake_case) to camelCase.
+ * @param str - The input string to be converted.
+ * @returns The converted string in camelCase.
+ */
+export function anyCaseToCamelCase(str: string): string {
+    return str
+      .replace(/[-_]+(.)?/g, (_, char) => (char ? char.toUpperCase() : ''))
+      .replace(/^[A-Z]/, (char) => char.toLowerCase());
+}
+
+/**
+ * Converts a string from any case (camelCase, PascalCase, kebab-case, snake_case) to kebab-case.
+ * @param str - The input string to be converted.
+ * @returns The converted string in kebab-case.
+ */
+export function anyCaseToKebabCase(str: string): string {
+    return str
+      .replace(/([a-z0-9])([A-Z])/g, '$1-$2') // Convert camelCase and PascalCase to kebab-case
+      .replace(/_/g, '-') // Convert snake_case to kebab-case
+      .toLowerCase(); // Ensure all characters are lowercase
+}
+
+/**
+ * Converts a string from any case (camelCase, PascalCase, kebab-case, snake_case) to PascalCase.
+ * @param str - The input string to be converted.
+ * @returns The converted string in PascalCase.
+ */
+export function anyCaseToPascalCase(str: string): string {
+    return str
+      .replace(/[-_]+(.)?/g, (_, char) => (char ? char.toUpperCase() : ''))
+      .replace(/^[a-z]/, (char) => char.toUpperCase());
+}
+
+/**
+ * Converts a string from any case (camelCase, PascalCase, kebab-case, snake_case) to snake_case.
+ * @param str - The input string to be converted.
+ * @returns The converted string in snake_case.
+ */
+export function anyCaseToSnakeCase(str: string): string {
+    return str
+      .replace(/([a-z0-9])([A-Z])/g, '$1_$2')
+      .replace(/[-]+/g, '_')
+      .toLowerCase();
+}
+
+/**
+ * Converts a string from any case (camelCase, PascalCase, kebab-case, snake_case) to UPPER CASE.
+ * @param str - The input string to be converted.
+ * @returns The converted string in UPPER CASE.
+ */
+export function anyCaseToUpperCase(str: string): string {
+    return str.replace(/[-_]+(.)?/g, (_, char) => (char ? char.toUpperCase() : '')).toUpperCase();
+}
+
+/**
+ * Converts a string from any case (camelCase, PascalCase, kebab-case, snake_case) to lower case.
+ * @param str - The input string to be converted.
+ * @returns The converted string in lower case.
+ */
+export function anyCaseToLowerCase(str: string): string {
+    return str.replace(/[-_]+(.)?/g, (_, char) => (char ? char.toLowerCase() : '')).toLowerCase();
+}
+
+