server-ts: Refactor out abstract init in entities

src/becca/entities/abstract_becca_entity.ts

@@ -92,7 +92,9 @@ abstract class AbstractBeccaEntity<T extends AbstractBeccaEntity<T>> {
 
     abstract getPojo(): {};
 
-    abstract init(): void;
+    init() {
+        // Do nothing by default, can be overriden in derived classes.
+    }
 
     abstract updateFromRow(row: unknown): void;
 

src/becca/entities/battachment.ts

@@ -83,10 +83,6 @@ class BAttachment extends AbstractBeccaEntity<BAttachment> {
         this.contentLength = row.contentLength;
     }
 
-    init(): void {
-        // Do nothing.
-    }
-
     copy(): BAttachment {
         return new BAttachment({
             ownerId: this.ownerId,

src/becca/entities/bblob.ts

@@ -26,10 +26,6 @@ class BBlob extends AbstractBeccaEntity<BBlob> {
         this.utcDateModified = row.utcDateModified;
     }
 
-    init() {
-        // Nothing to do.
-    }
-
     getPojo() {
         return {
             blobId: this.blobId,

src/becca/entities/boption.ts

@@ -32,10 +32,6 @@ class BOption extends AbstractBeccaEntity<BOption> {
         this.utcDateModified = row.utcDateModified;
     }
 
-    init(): void {
-        // Do nothing.
-    }
-
     beforeSaving() {
         super.beforeSaving();
 

src/becca/entities/brecent_note.ts

@@ -29,10 +29,6 @@ class BRecentNote extends AbstractBeccaEntity<BRecentNote> {
         this.utcDateCreated = row.utcDateCreated || dateUtils.utcNowDateTime();
     }
 
-    init(): void {
-        // Do nothing.
-    }
-
     getPojo() {
         return {
             noteId: this.noteId,

src/becca/entities/brevision.ts

@@ -68,10 +68,6 @@ class BRevision extends AbstractBeccaEntity<BRevision> {
         this.contentLength = row.contentLength;
     }
 
-    init() {
-        // Do nothing.
-    }
-
     getNote() {
         return becca.notes[this.noteId];
     }