refactor: change limiter.Try() to .removeToken()

src/node/routes/login.ts

@@ -21,12 +21,9 @@ export class RateLimiter {
     return this.minuteLimiter.getTokensRemaining() > 0 || this.hourLimiter.getTokensRemaining() > 0
   }
 
-  public try(): boolean {
+  public removeToken(): boolean {
-    if (this.canTry()) {
     return this.minuteLimiter.tryRemoveTokens(1) || this.hourLimiter.tryRemoveTokens(1)
   }
-    return false
-  }
 }
 
 const getRoot = async (req: Request, error?: Error): Promise<string> => {
@@ -91,7 +88,7 @@ router.post("/", async (req, res) => {
 
     // Note: successful logins should not count against the RateLimiter
     // which is why this logic must come after the successful login logic
-    if (!limiter.try()) {
+    if (!limiter.removeToken()) {
       throw new Error("Login rate limited!")
     }
 

test/unit/routes/login.test.ts

@@ -4,20 +4,20 @@ describe("login", () => {
   describe("RateLimiter", () => {
     it("should allow one try ", () => {
       const limiter = new RateLimiter()
-      expect(limiter.try()).toBe(true)
+      expect(limiter.removeToken()).toBe(true)
     })
 
     it("should pull tokens from both limiters (minute & hour)", () => {
       const limiter = new RateLimiter()
 
       // Try twice, which pulls two from the minute bucket
-      limiter.try()
+      limiter.removeToken()
-      limiter.try()
+      limiter.removeToken()
 
       // Check that we can still try
       // which should be true since there are 12 remaining in the hour bucket
       expect(limiter.canTry()).toBe(true)
-      expect(limiter.try()).toBe(true)
+      expect(limiter.removeToken()).toBe(true)
     })
 
     it("should not allow more than 14 tries in less than an hour", () => {
@@ -27,10 +27,11 @@ describe("login", () => {
       // so if we run it 15 times, 14 should return true and the last
       // should return false
       for (let i = 1; i <= 14; i++) {
-        expect(limiter.try()).toBe(true)
+        expect(limiter.removeToken()).toBe(true)
       }
 
-      expect(limiter.try()).toBe(false)
+      expect(limiter.canTry()).toBe(false)
+      expect(limiter.removeToken()).toBe(false)
     })
   })
 })