fix(MongoBinaryDownloadUrl::translateArch): add deprecation notice for "ia32"

re #638

Author: hasezoey

docs/guides/error-warning-details.md

@@ -167,3 +167,12 @@ Example: `ReplSet Count needs to be 1 or higher! (specified count: "${count}")`
 
 Details:  
 ReplSet count (like `new MongoMemoryReplSet({ replSet: { count: 0 } })`) needs to be `1` or higher
+
+## Deprecation Codes
+
+### MMS001
+
+Code: `MMS001`  
+Message: `mongodb-memory-server will fully drop support for ia32 in 9.0`
+
+In the major version `9.0` MMS will fully drop support for the architecture `ia32` (`i386` / `i686`), because MongoDB stopped supporting the architecture past 3.x, and MMS never full supported 3.6 or lower anyway, see [this issue #638 for tracking](https://github.com/nodkz/mongodb-memory-server/issues/638).

packages/mongodb-memory-server-core/src/util/MongoBinaryDownloadUrl.ts

@@ -9,6 +9,7 @@ import {
   UnknownArchitectureError,
   UnknownPlatformError,
 } from './errors';
+import { deprecate } from 'util';
 
 const log = debug('MongoMS:MongoBinaryDownloadUrl');
 
@@ -514,6 +515,12 @@ export class MongoBinaryDownloadUrl implements MongoBinaryDownloadUrlOpts {
   static translateArch(arch: string, mongoPlatform: string): string {
     switch (arch) {
       case 'ia32':
+        deprecate(
+          () => {},
+          'mongodb-memory-server will fully drop support for ia32 in 9.0',
+          'MMS001'
+        )();
+
         if (mongoPlatform === 'linux') {
           return 'i686';
         } else if (mongoPlatform === 'win32') {