/**
 * Whether a tool's result says it failed.
 *
 * A module of its own, and one function long, for a measured reason: it lived in tools.ts, and
 * tui.ts imported it — so printing anything through the terminal helper pulled in the entire tool
 * suite, execa and all. Timed on a Raspberry Pi, importing tools.js costs 941ms and tui.js 701ms of
 * that, which every invocation paid, `koneck --version` included. Nothing here needs a dependency:
 * it reads a string.
 */
export declare function isToolFailure(result: string): boolean;
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