Add typings

main.d.ts

@@ -0,0 +1,57 @@
+declare namespace CompressJS {
+     export class Stream {
+          readByte(): number
+
+          read(buf: ByteArray, bufOffset: number, length: number): number
+
+          eof(): boolean
+
+          seek(pos: number): void
+
+          tell(): void 
+
+          writeByte(byte: number): void;
+     }
+
+     export class BitStream extends Stream {
+          readBits(n: number): number
+
+          writeBitns(n: number, value: number): void;
+     }
+
+     type ByteArray = Buffer | number[] | Uint8Array
+
+     type CompressionLevels = 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
+     interface CompressionMethod {
+          compressFile(input: ByteArray, output?: void | null, compressionLevel?: CompressionLevels | object): number[]
+          compressFile(input: ByteArray, output?: { writeByte: Stream["writeByte"] }, compressionLevel?: CompressionLevels | object): void
+
+          decompressFile(input: ByteArray, output?: void | null): ByteArray
+          decompressFile(input: ByteArray, output?: { writeByte: Stream["writeByte"] }): void
+     }
+
+     export const BWTC: CompressionMethod;
+     export const Bzip2: CompressionMethod;
+     export const Dmc: CompressionMethod;
+     export const Lzjb: CompressionMethod;
+     export const LzjbR: CompressionMethod;
+     export const Lzp3: CompressionMethod;
+     export const PPM: CompressionMethod;
+     export const Simple: CompressionMethod;
+
+     interface ModelCoder {
+          encode(symbol: Symbol, ctx?: any): void;
+          decode(ctx?: any): Symbol;
+          factory(params: any): (size: number) => this;
+     }
+
+     export const Context1Model: ModelCoder;
+     export const DefSumModel: ModelCoder;
+     export const FenwickModel: ModelCoder;
+     export const MTFModel: ModelCoder;
+     export const NoModel: ModelCoder;
+     export const Huffman: ModelCoder;
+     export const RangeCoder: ModelCoder;
+}
+
+export = CompressJS

package.json

@@ -3,6 +3,7 @@
   "version": "1.0.3-git",
   "author": "C. Scott Ananian",
   "description": "pure JavaScript de/compression (bzip2, etc) for node.js, volo, and the browser.",
+  "types": "main.d.ts",
   "keywords": [
     "bzip2",
     "compression",
@@ -25,6 +26,7 @@
     "commander": "~2.8.1"
   },
   "devDependencies": {
+    "@types/node": "^20.11.17",
     "mocha": "~2.2.5"
   },
   "scripts": {