export declare function toSentenceCase(str: string): string;
export declare function addTrailingPeriod(str: string): string;
export declare function removeTrailingPeriod(str: string): string;
/**
 * Example: FOO => Foo, foo => Foo
 */
export declare function capitalizeOnlyFirstLetter(str: string): string;
export declare function sanitizeMarkdownTable(text: readonly (readonly string[])[]): readonly (readonly string[])[];