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node_modules/@serialport/parser-packet-length/dist/index.d.ts

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+/// <reference types="node" />
+/// <reference types="node" />
+import { Transform, TransformCallback, TransformOptions } from 'stream';
+export interface PacketLengthOptions extends TransformOptions {
+    /** delimiter to use defaults to 0xaa */
+    delimiter?: number;
+    /** overhead of packet (including length, delimiter and any checksum / packet footer) defaults to 2 */
+    packetOverhead?: number;
+    /** number of bytes containing length defaults to 1 */
+    lengthBytes?: number;
+    /** offset of length field defaults to 1 */
+    lengthOffset?: number;
+    /**  max packet length defaults to 0xff */
+    maxLen?: number;
+}
+/**
+ * A transform stream that decodes packets with a delimiter and length of payload
+ * specified within the data stream.
+ * @extends Transform
+ * @summary Decodes packets of the general form:
+ *       [delimiter][len][payload0] ... [payload0 + len]
+ *
+ * The length field can be up to 4 bytes and can be at any offset within the packet
+ *       [delimiter][header0][header1][len0][len1[payload0] ... [payload0 + len]
+ *
+ * The offset and number of bytes of the length field need to be provided in options
+ * if not 1 byte immediately following the delimiter.
+ */
+export declare class PacketLengthParser extends Transform {
+    buffer: Buffer;
+    start: boolean;
+    opts: {
+        delimiter: number;
+        packetOverhead: number;
+        lengthBytes: number;
+        lengthOffset: number;
+        maxLen: number;
+    };
+    constructor(options?: PacketLengthOptions);
+    _transform(chunk: Buffer, encoding: BufferEncoding, cb: TransformCallback): void;
+    _flush(cb: TransformCallback): void;
+}