squash! check windowsBits === 8 early

Author: aqrln

lib/zlib.js

@@ -193,6 +193,10 @@ class Zlib extends Transform {
           opts.windowBits > constants.Z_MAX_WINDOWBITS) {
         throw new RangeError('Invalid windowBits: ' + opts.windowBits);
       }
+      if (mode === constants.DEFLATERAW &&
+          opts.windowBits === 8) {
+        throw new RangeError('Unsupported windowBits for DeflateRaw: 8');
+      }
     }
 
     if (opts.level) {

test/parallel/test-zlib-failed-init.js …t-zlib-deflate-unsupported-windowbits.jstest/parallel/test-zlib-failed-init.js renamed to test/parallel/test-zlib-deflate-unsupported-windowbits.js test/parallel/test-zlib-failed-init.js renamed to test/parallel/test-zlib-deflate-unsupported-windowbits.js

@@ -10,4 +10,4 @@ const zlib = require('zlib');
 // (http://zlib.net/manual.html#Advanced)
 assert.throws(() => {
   zlib.createDeflateRaw({ windowBits: 8 });
-}, /^Error: Init error$/);
+}, /^RangeError: Unsupported windowBits for DeflateRaw: 8$/);