export interface FileMutations {
    readonly filename: string;
    readonly mutations: TextMutations[];
}
export interface Span {
    readonly startLine: number;
    readonly endLine?: number;
}
export interface TextMutations extends Span {
    readonly newContent: string;
}
export declare function applyMutations(mutations: FileMutations[]): Promise<void>;
export declare function mutateFile(filename: string, mutations: TextMutations[]): Promise<void>;