/**
 * ONNX weight parser for paddleocr-webgpu.
 *
 * The hand-rolled protobuf walker used to fail on PaddleOCRv6 exports
 * because of subtle field-number / wire-type edge cases in attribute and
 * TensorProto encoding.  This version enforces strict bounds and
 * short-circuits on any anomaly.
 */
export interface OnnxTensor {
    name: string;
    dims: number[];
    dataType: number;
    rawData: Uint8Array;
}
/**
 * Minimal ONNX protobuf parser.  Reads only what we need (initializer
 * TensorProtos) and discards everything else after recording it for sanity.
 */
export declare class OnnxParser {
    private buffer;
    private view;
    constructor(buffer: ArrayBuffer);
    /** Parse all initializer tensors from the ONNX model. */
    parseInitializers(): Map<string, OnnxTensor>;
    /**
     * Decode a TensorProto between [start, end).  Strictly bound-checked and
     * resilient to malformed payloads.
     */
    private parseTensorProto;
    /** Read a LEB128 varint starting at offset. Returns { value, end }. */
    private readVarint;
    /** Read a protobuf tag (field + wire-type) at offset. Backwards compat. */
    private readTag;
    /**
     * Backwards-compatible alias of skipWireType that accepts a tag-shape with
     * `{ fieldNumber, wireType, dataStart }` — what's used by the engine's
     * NodeProto / AttributeProto walk.
     */
    private skipField;
    /** Skip a single field's value at dataStart for the given wire type. */
    private skipWireType;
    /** Skip a top-level field encoded at `offset`. */
    private skipVarintField;
    private findField;
}
/** Float16 → float32 conversion. */
export declare function float16ToFloat32(f16: Uint16Array): Float32Array;
/** Static typed-array body copy. */
export declare function copyTypedArray(src: Float32Array, dst: Float32Array): void;
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