/**
 * Removes line breaks and consecutive white spaces from a given string
 * @param str
 * @returns
 */
export declare const cleanString: (str: string) => string;
/**
 * Get the first character of a string
 * @param str The string to get the first character from
 * @returns The first character
 */
export declare const getFirstChar: (str: string) => string;
/**
 * Get the last character of a string
 * @param str The string to get the last character from
 * @returns The last character
 */
export declare const getLastChar: (str: string) => string;
/**
 * Check if the first character of a string is numeric
 * @param str The string to check
 * @returns Whether the first character is numeric or not
 */
export declare const isFirstCharNumeric: (str: string) => boolean;
/**
 * Convert a string to camelCase, keeps the first alphabet character as it is.
 * @param str The string to convert
 * @returns The converted string
 */
export declare const camelCase: (str: string) => string;
/**
 * Convert a string to `lowerCamelCase`
 * @param str The string to convert
 * @returns The converted string
 */
export declare const lowerCamelCase: (str: string) => string;
/**
 * Convert a string to `PascalCase`
 * @param str The string to convert
 * @returns The converted string
 */
export declare const pascalCase: (str: string) => string;
/** Alias for {@link pascalCase} */
export declare const upperCamelCase: (str: string) => string;
/**
 * Convert a string to `snake_case`
 * @param str The string to convert
 * @returns The converted string
 */
export declare const snakeCase: (str: string) => string;
/**
 * Convert a string to `kebab-case`
 * @param str The string to convert
 * @returns The converted string
 */
export declare const kebabCase: (str: string) => string;
/** Alias for {@link kebabCase} */
export declare const slugCase: (str: string) => string;
export declare const underscores: (str: string) => string;
/**
 * Add indents to a string
 * @param indents The number of indents
 * @param spaceForIndent The number of spaces for each indent
 * @returns The indented string
 */
export declare const generateIndent: (indents?: number, spaceForIndent?: number) => string;
/**
 * Merge a large array of strings by using a smaller chunk size
 * @param target The target array to merge into
 * @param source The source array to merge from
 * @param chunkSize The size of the chunks to merge
 * @returns The merged array
 */
export declare const mergeLargeStringArray: (target: string[], source: string[], chunkSize?: number) => string[];