import * as Effect from "effect/Effect";
import * as FileSystem from "effect/FileSystem";
import * as Path from "effect/Path";
import { type AppError } from "../app-error/index.js";
import type { ExtensionFqnParts, ExtensionName, ExtensionType } from "./common.js";
import type { Handle } from "./handle.js";
export interface ForkExtensionPackageArgs {
    readonly sourceDir: string;
    readonly targetDir: string;
    readonly sourceIdentity: {
        readonly owner: Handle;
        readonly type: ExtensionType;
        readonly name: ExtensionName;
        readonly version: string;
    };
    readonly target: ExtensionFqnParts;
}
export declare const forkExtensionPackage: (args: ForkExtensionPackageArgs) => Effect.Effect<void, AppError, FileSystem.FileSystem | Path.Path>;
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