export declare const XusePkceSchema: import("@scalar/typebox").TObject<{
    /**
     * Use x-usePkce to enable Proof Key for Code Exchange (PKCE) for the Oauth2 authorization code flow.
     */
    'x-usePkce': import("@scalar/typebox").TUnion<[import("@scalar/typebox").TLiteral<"SHA-256">, import("@scalar/typebox").TLiteral<"plain">, import("@scalar/typebox").TLiteral<"no">]>;
}>;
export type XusePkce = {
    /**
     * Use x-usePkce to enable Proof Key for Code Exchange (PKCE) for the Oauth2 authorization code flow.
     */
    'x-usePkce': 'SHA-256' | 'plain' | 'no';
};
export declare const XusePkce: import("@scalar/validation").ObjectSchema<{
    'x-usePkce': import("@scalar/validation").UnionSchema<readonly [import("@scalar/validation").LiteralSchema<"SHA-256">, import("@scalar/validation").LiteralSchema<"plain">, import("@scalar/validation").LiteralSchema<"no">]>;
}>;
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