import type { EnvShell } from "../platform/base.js";
export interface EnvVar {
    key: string;
    value: string;
}
/** Format a single env assignment for the target shell. */
export declare function formatExport(v: EnvVar, shell: EnvShell): string;
export declare function formatUnset(key: string, shell: EnvShell): string;
/**
 * Insert or replace the aih-managed block for `scope` in a shell profile.
 *
 * Idempotent by construction: the region between the begin/end markers is
 * replaced wholesale, so re-running with the same vars yields byte-identical
 * output and lines outside the markers are never touched. Preserves the file's
 * existing EOL style (CRLF vs LF).
 */
export declare function upsertManagedBlock(existing: string, scope: string, vars: EnvVar[], shell: EnvShell, unsetKeys?: readonly string[]): string;
/**
 * Insert or replace the aih-managed `scope` block carrying arbitrary `body` text
 * (the format-agnostic core of {@link upsertManagedBlock}). The `#`-comment markers
 * are valid in any `#`-commented format — shell profiles AND TOML — so `aih mcp`
 * reuses this to fold its `[mcp_servers.*]` tables into Codex's `~/.codex/config.toml`
 * without clobbering the rest of the file. Idempotent: the region between the markers
 * is replaced wholesale, content outside is untouched, and the file's EOL style
 * (CRLF vs LF) is preserved.
 */
export declare function upsertTextBlock(existing: string, scope: string, body: string): string;
/** Remove the managed block for `scope` if present (used by uninstall paths). */
export declare function removeManagedBlock(existing: string, scope: string): string;