feat: Convert model files to JS

packages/backend/src/models/query-builder.js

@@ -0,0 +1,58 @@
+import { Model } from 'objection';
+
+const DELETED_COLUMN_NAME = 'deleted_at';
+
+const supportsSoftDeletion = (modelClass) => {
+  return modelClass.jsonSchema.properties.deletedAt;
+};
+
+const buildQueryBuidlerForClass = () => {
+  return (modelClass) => {
+    const qb = Model.QueryBuilder.forClass.call(
+      ExtendedQueryBuilder,
+      modelClass
+    );
+    qb.onBuild((builder) => {
+      if (
+        !builder.context().withSoftDeleted &&
+        supportsSoftDeletion(qb.modelClass())
+      ) {
+        builder.whereNull(
+          `${qb.modelClass().tableName}.${DELETED_COLUMN_NAME}`
+        );
+      }
+    });
+    return qb;
+  };
+};
+
+class ExtendedQueryBuilder extends Model.QueryBuilder {
+  static forClass = buildQueryBuidlerForClass();
+
+  delete() {
+    if (supportsSoftDeletion(this.modelClass())) {
+      return this.patch({
+        [DELETED_COLUMN_NAME]: new Date().toISOString(),
+      });
+    }
+
+    return super.delete();
+  }
+
+  hardDelete() {
+    return super.delete();
+  }
+
+  withSoftDeleted() {
+    this.context().withSoftDeleted = true;
+    return this;
+  }
+
+  restore() {
+    return this.patch({
+      [DELETED_COLUMN_NAME]: null,
+    });
+  }
+}
+
+export default ExtendedQueryBuilder;