moving from zlib to minizlib (#57)

Author: makrsmark

lib/utils/miam.test.ts

@@ -59,5 +59,5 @@ test('v1, compressed, acars, incomplete', () => {
   expect(decodeResult.message.data.acars.label).toBe('H1');
   expect(decodeResult.message.data.acars.sublabel).toBe('DF');
   expect(decodeResult.message.data.acars.mfi).toBe(undefined);
-  expect(decodeResult.message.data.acars.text).toBe(undefined);
+  expect(decodeResult.message.data.acars.text).toBe('A350,000130,1,1,TB000000/REP019,24,02;H01,019,24,02,6400,00175,B-18910,3,0,03,11,19,08,07,01,070/H02,NZAA YBBN,CAL054  ,S');
 })

lib/utils/miam.ts

@@ -1,5 +1,5 @@
 import * as Base85 from 'base85';
-import * as Zlib from 'zlib';
+import * as zlib  from "minizlib";
 
 enum MIAMFid {
   SingleTransfer = 'T',
@@ -398,7 +398,10 @@ export class MIAMCoreUtils {
     if (body !== undefined && body.length > 0) {
       if ([MIAMCoreV1Compression.Deflate, MIAMCoreV2Compression.Deflate].indexOf(pduCompression) >= 0) {
         try {
-          pduData = Zlib.inflateRawSync(body, { windowBits: 15 });
+          const decompress = new zlib.InflateRaw({windowBits: 15});
+          decompress.write(body);
+          decompress.flush(zlib.constants.Z_SYNC_FLUSH);
+          pduData = decompress.read();
         } catch (e) {
           pduErrors.push('Inflation failed for body: ' + e);
         }

package.json

@@ -28,13 +28,15 @@
   "license": "UNLICENSED",
   "dependencies": {
     "@types/node": "^22.0.0",
-    "base85": "^3.1.0"
+    "base85": "^3.1.0",
+    "minizlib": "^2.1.2"
   },
   "devDependencies": {
     "@babel/core": "^7.18.13",
     "@babel/preset-env": "^7.18.10",
     "@babel/preset-typescript": "^7.18.6",
     "@types/jest": "^28.1.7",
+    "@types/minizlib": "^2.1.7",
     "babel-jest": "^29.7.0",
     "jest": "^28.1.3",
     "ts-jest": "^28.0.8",