== used instead of .equals() for String comparison #1027

[REQUIRED] Step 2: Describe your environment

• Operating System version: macOS 14.3
• Firebase SDK version: 9.4.1
• Library version: _____
• Firebase Product: _____ (auth, database, storage, etc)

[REQUIRED] Step 3: Describe the problem

Steps to reproduce:

Currently we are using "==" for string comparison . == compares the reference values, so if two variables reference different objects, they will not be equal using == . This can cause potential bugs while using the sdk

Relevant Code:

snipped from AbstractFirebaseAuth : 603
if (providerId == "phone") {
return this.getUserByPhoneNumberOp(uid);
} else if (providerId == "email") {
return this.getUserByEmailOp(uid);
}

solution:

   if ("phone".equals(providerId)) {
      return this.getUserByPhoneNumberOp(uid);
    } else if ( "email".equals(providerId)) {
      return this.getUserByEmailOp(uid);
    }