fix default role

Author: rithviknishad

src/db.ts

@@ -7,7 +7,7 @@ import {
 export async function addNewContributors(
   db: Database,
   contributors: string[],
-  role: string | null = null,
+  role: string,
 ) {
   // Remove duplicates from the array
   contributors = [...new Set(contributors)];
@@ -36,7 +36,7 @@ export async function addNewContributors(
 export async function updateBotRoles(
   db: Database,
   botUsernames: string[],
-  logger: Logger
+  logger: Logger,
 ) {
   if (botUsernames.length === 0) {
     logger.info("No bot users to update");
@@ -53,7 +53,7 @@ export async function updateBotRoles(
         SET role = 'bot'
         WHERE username = ?;
       `,
-      [username]
+      [username],
     );
 
     logger.info(`Updated ${result.rowsAffected} bot contributors`);

src/get-activities.ts

@@ -934,7 +934,7 @@ async function persistRepoActivities(
   db: PluginContext["db"],
   activities: Activity[],
   logger: Logger,
-  defaultRole: string | null,
+  defaultRole: string,
 ): Promise<number> {
   const contributorUsernames = activities.map((a) => a.contributor);
   await addNewContributors(db, contributorUsernames, defaultRole);
@@ -1052,7 +1052,9 @@ export async function getActivities({ db, config, logger }: PluginContext) {
       ).filter((a) => !disabledSlugs.has(a.activity_definition));
 
       const defaultRole =
-        typeof config.defaultRole === "string" ? config.defaultRole : null;
+        typeof config.defaultRole === "string"
+          ? config.defaultRole
+          : "contributor";
 
       const saved = await persistRepoActivities(
         db,