/**
 * Copyright 2020 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *     http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * Changes from source code:
 * - Added defaultOptions
 * - Added `optimiseAlpha` option
 */
export interface OptimiseOptions {
    level: number;
    interlace: boolean;
    optimiseAlpha: boolean;
}
export declare const label = "OXIPNG";
export declare const mimeType = "image/png";
export declare const extension = "png";
export declare const defaultOptions: OptimiseOptions;
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