/**
 * Conservatively identifies commands whose stdout is owned by a test runner.
 * Mixed shell expressions are deliberately excluded because their output has
 * more than one semantic owner and cannot be projected safely as test output.
 */
export declare function isProjectableTestCommand(command: string): boolean;
export interface ShellOutputProjection {
    kind: "test";
    content: string;
    inputLines: number;
    inputBytes: number;
    outputLines: number;
    outputBytes: number;
    omittedLines: number;
    collapsedPassingLines: number;
}
export type ShellOutputProjectionDetails = Omit<ShellOutputProjection, "content">;
/**
 * Incremental, bounded projector for recognized test-runner output. It retains
 * failure identity, nearby diagnostics, summaries, and final context while
 * counting passing/progress chatter instead of retaining it. The caller owns
 * exact raw-output persistence and must fall back to raw output if that handoff
 * cannot be created.
 */
export declare class ShellOutputProjector {
    private readonly decoder;
    private readonly selected;
    private readonly recent;
    private currentHead;
    private currentTail;
    private currentChars;
    private hasOpenLine;
    private totalBytes;
    private totalLines;
    private collapsedPassingLines;
    private failureSignals;
    private followFailureLines;
    private finished;
    private cachedProjection;
    append(data: Buffer): void;
    finish(exitCode: number | null): ShellOutputProjection | undefined;
    private appendDecodedText;
    private appendToCurrentLine;
    private completeLine;
    private select;
    private renderSelected;
}
export declare function createShellOutputProjector(command: string): ShellOutputProjector | undefined;
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