import { LinearClient } from "@linear/sdk";
declare const LINEAR_API_KEY_SOURCES: readonly ["GROUNDCREW_LINEAR_API_KEY", "LINEAR_API_KEY"];
export type LinearApiKeySource = (typeof LINEAR_API_KEY_SOURCES)[number];
export interface ResolvedLinearApiKey {
    value: string;
    source: LinearApiKeySource;
}
export declare function resolveLinearApiKey(): ResolvedLinearApiKey | undefined;
export declare function getLinearClient(): LinearClient;
/**
 * Returns a zero-arg getter that lazily constructs (and caches) a Linear
 * client on first call. Used by CLI entry points that may not need the
 * client at all (e.g. `--no-linear`), so we avoid blowing up on a missing
 * API key when no Linear call is actually made. The factory is taken as a
 * parameter (rather than calling `getLinearClient` directly) so callers can
 * pass their own module-level import of `getLinearClient` — that binding
 * respects `vi.mock` intercepts, whereas an intra-module reference would
 * not.
 */
export declare function lazyLinearClient(factory: () => LinearClient): () => LinearClient;
export {};
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