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@opra/common

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import { Readable, Stream } from 'stream'; export declare function isStream(x: any): x is Stream; export declare function isReadable(x: any): x is Readable; export declare function isWritable(x: any): x is Readable; export declare function isReadableStream(x: any): x is ReadableStream; export declare function isBlob(x: any): x is Blob; export declare function isFormData(x: any): x is FormData; export declare function isURL(x: any): x is URL;