fix an error with the all time date range for role stats.

backend/package.json

@@ -7,7 +7,8 @@
     "test": "echo \"Error: no test specified\" && exit 1",
     "lint": "eslint . --ext .js,.jsx,.cjs,.mjs,.ts,.tsx,.cts,.mts --fix --ignore-path .gitignore",
     "format": "prettier --write src/",
-    "dev": "npx tsc && node dist/app.js"
+    "dev": "npx tsc && node dist/app.js",
+    "build": "npx tsc"
   },
   "keywords": [],
   "author": "",

backend/src/rushstatsservice.ts

@@ -26,7 +26,7 @@ function getYearNumber(monthId: number): number {
 }
 
 function monthIdToStartSeconds(monthId: number): number {
-  if (monthId) {
+  if (monthId != -1) {
     const yearNumber = getYearNumber(monthId)
     const monthNumber = getMonthNumber(monthId)
     return new Date(yearNumber, monthNumber, 1).getTime() / 1000
@@ -35,12 +35,12 @@ function monthIdToStartSeconds(monthId: number): number {
 }
 
 function monthIdToEndSeconds(monthId: number): number {
-  if (monthId) {
+  if (monthId != -1) {
     const yearNumber = getYearNumber(monthId)
     const monthNumber = getMonthNumber(monthId)
     return new Date(yearNumber, monthNumber + 1, -1).getTime() / 1000
   }
-  return 0
+  return Number.MAX_SAFE_INTEGER
 }
 
 export function addRushStatsApis(app, jsonParser) {