export interface SandboxConfigResult {
    /** The evaluated configuration, as plain JSON. Interpreted (default/config/namespace selection already applied in the child; Zod validation still to come) by `../../config.ts`'s `normalizeConfig`, in the parent, unchanged. */
    config: unknown;
    /** esbuild bundling wall-clock time. */
    bundleMs: number;
    /** Bundle size in bytes. */
    bundleBytes: number;
}
/**
 * Evaluate `configPath` in a sandboxed child and return its configuration as
 * plain data.
 *
 * Throws — rather than degrading to an in-process import or to defaults — when
 * the config cannot be evaluated inside the boundary or cannot cross it as
 * JSON. Under `--sandbox` a config that "almost" loaded is not a safe thing to
 * proceed with, and quietly falling back would give away the property the flag
 * exists to provide.
 *
 * @param configPath - Absolute path to the project's `chant.config.ts`.
 * @param projectRoot - Directory the child is granted `--allow-fs-read` for
 *   (the config's own project root, i.e. `findProjectConfig`'s `dir`).
 */
export declare function evaluateConfigSandboxed(configPath: string, projectRoot: string): Promise<SandboxConfigResult>;
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