/** The shape a Node resolve hook must return. */
export type SelfResolved = {
    url: string;
    format?: string | null;
    shortCircuit?: boolean;
};
/**
 * Resolve `vigiles` / `vigiles/<subpath>` against the CLI's OWN installation,
 * or `null` when this is not our specifier / we cannot serve it.
 *
 * `null` rather than a throw of its own: the caller is inside a `catch` and the
 * ORIGINAL resolution error is the accurate one to re-raise. An unknown subpath
 * (`vigiles/nope`) would otherwise surface as `ERR_PACKAGE_PATH_NOT_EXPORTED`
 * from our rescue, blaming the rescue for the author's typo.
 *
 * The root is read from the environment at CALL time, not at module load, so a
 * test can drive both branches in one process.
 */
export declare function resolveSelfSpecifier(specifier: string): SelfResolved | null;
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