import { postcss } from "opticss";
import { BEMProcessor } from "./util/BEMProcessor";
import cssBlocks = require("./util/postcss-helper");
export declare class BlockInterfaceTests extends BEMProcessor {
    assertError(errorType: typeof cssBlocks.CssBlockError, message: string, promise: postcss.LazyResult | Promise<postcss.Result>): Promise<void>;
    "can detect missing surface area"(): Promise<void>;
    "can import another block"(): Promise<void>;
}
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