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@bufbuild/protobuf

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A complete implementation of Protocol Buffers in TypeScript, suitable for web browsers and Node.js.

github.com/bufbuild/protobuf-es

bufbuild/protobuf-es

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import type { MessageShape } from "./types.js"; import type { DescMessage } from "./descriptors.js"; /** * Determine whether the given `arg` is a message. * If `desc` is set, determine whether `arg` is this specific message. */ export declare function isMessage<Desc extends DescMessage>(arg: unknown, schema?: Desc): arg is MessageShape<Desc>;