/**
 * apply-patch — 1:1 port of OpenAI Codex CLI apply_patch tool.
 *
 * Parses patch text into hunks, locates context via 4-stage fuzzy matching,
 * computes replacements, and applies them to the filesystem.
 */
export interface UpdateFileChunk {
    changeContext?: string;
    oldLines: string[];
    newLines: string[];
    isEndOfFile: boolean;
}
export type Hunk = {
    type: "add";
    path: string;
    contents: string;
} | {
    type: "delete";
    path: string;
} | {
    type: "update";
    path: string;
    movePath?: string;
    chunks: UpdateFileChunk[];
};
interface ApplyPatchArgs {
    patch: string;
    hunks: Hunk[];
    environmentId?: string;
}
export declare class ParseError extends Error {
    readonly kind: "invalid-patch" | "invalid-hunk";
    readonly lineNumber?: number | undefined;
    constructor(kind: "invalid-patch" | "invalid-hunk", message: string, lineNumber?: number | undefined);
}
export declare class ComputeReplacementsError extends Error {
    constructor(message: string);
}
export declare function parsePatch(patch: string): ApplyPatchArgs;
export declare function seekSequence(lines: string[], pattern: string[], start: number, eof: boolean): number | undefined;
export declare function computeReplacements(originalLines: string[], filePath: string, chunks: UpdateFileChunk[]): Array<{
    startIdx: number;
    oldLen: number;
    newLines: string[];
}>;
export declare function applyReplacements(lines: string[], replacements: Array<{
    startIdx: number;
    oldLen: number;
    newLines: string[];
}>): string[];
export interface AffectedPaths {
    added: string[];
    modified: string[];
    deleted: string[];
}
export declare function applyPatch(patchText: string, cwd: string): Promise<{
    affected: AffectedPaths;
    exact: boolean;
}>;
export {};
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