/**
 * Managed-block markers. The `paws` shell function is written between these so
 * `padua profile --install` can replace it in place (idempotently) instead of
 * appending a duplicate on every upgrade.
 */
export declare const PAWS_MARKER_START = "# >>> padua paws >>> (managed by `padua profile --install` \u2014 do not edit)";
export declare const PAWS_MARKER_END = "# <<< padua paws <<<";
/** Resolved shell target, as produced by `getShellFunction()` in ./index.ts. */
export interface ShellTarget {
    content: string;
    shellType: string;
    configFile: string;
}
export interface InstallResult {
    shellType: string;
    /** Absolute rc path written, or the raw `$PROFILE` token for PowerShell. */
    configPath: string;
    /** `installed` (fresh), `updated` (replaced existing), `manual` (PowerShell). */
    action: 'installed' | 'updated' | 'manual';
    /** The marker-wrapped block that was (or should be) written. */
    block: string;
}
/** Wrap the emitted shell function in the managed-block markers. */
export declare function buildManagedBlock(fnContent: string): string;
/**
 * Return `existing` with exactly one managed `paws` block. Any prior managed
 * block (marker pair) and any legacy un-marked `# Padua AWS Profile Switcher`
 * block are removed first, then a fresh marker-wrapped block is appended.
 * Idempotent: applying twice yields the same result.
 */
export declare function applyManagedBlock(existing: string, fnContent: string): string;
/**
 * Install or upgrade the `paws` shell function in the user's shell rc file.
 * For bash/zsh the rc file is rewritten with a single managed block. PowerShell
 * is not auto-written (resolving `$PROFILE` from Node is unreliable); the caller
 * should print `result.block` and the manual instruction instead.
 */
export declare function installPawsFunction(target: ShellTarget): InstallResult;
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