implemented a lot of features

types/yencode.d.ts

@@ -0,0 +1,15 @@
+declare module 'yencode' {
+  export function decode(data: Buffer, stripDots?: boolean): Buffer
+  export function encode(data: Buffer, lineSize?: number, column?: number): Buffer
+  /** Returns the CRC32 as a 4-byte big-endian buffer. */
+  export function crc32(data: Buffer, initial?: Buffer): Buffer
+  /** CRC32 of A+B from crc(A), crc(B) and the length of B. */
+  export function crc32_combine(crc1: Buffer, crc2: Buffer, len2: number): Buffer
+  const yencode: {
+    decode: typeof decode
+    encode: typeof encode
+    crc32: typeof crc32
+    crc32_combine: typeof crc32_combine
+  }
+  export default yencode
+}