/** Shared or per-chain credentials. */
export type ChainCredential = string | Record<number, string>;
/** Parses shared or per-chain credentials from an environment value. */
export declare function parseCredential(value: ChainCredential | undefined): parseCredential.ReturnType;
export declare namespace parseCredential {
    /** Parsed shared or per-chain credentials. */
    type ReturnType = ChainCredential | undefined;
}
/** Resolves a chain credential and infers its HTTP authorization scheme. */
export declare function resolveCredential(options: resolveCredential.Options): resolveCredential.ReturnType;
export declare namespace resolveCredential {
    /** Options for resolving a chain credential. */
    type Options = {
        /** Chain id selecting a per-chain credential. */
        chainId: number;
        /** Shared or per-chain credentials. */
        value?: ChainCredential | undefined;
    };
    /** Resolved HTTP authorization credentials. */
    type ReturnType = {
        /** Basic credentials inferred from a value containing a colon. */
        basicAuth: string | undefined;
        /** Bearer credential inferred from a value without a colon. */
        bearerAuth?: string | undefined;
    };
}
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