Improve error recovery in sync client (#218)

Author: simolus3

Cargo.lock

@@ -23,7 +23,6 @@ num-derive = "0.3"
 serde_json = { version = "1.0", default-features = false, features = ["alloc", "raw_value"] }
 serde = { version = "1.0", default-features = false, features = ["alloc", "derive", "rc"] }
 const_format = "0.2.34"
-futures-lite = { version = "2.6.0", default-features = false, features = ["alloc"] }
 rustc-hash = { version = "2.1", default-features = false }
 thiserror = { version = "2", default-features = false }
 serde_with = { version = "3.14.0", default-features = false, features = ["alloc", "macros"] }

crates/core/Cargo.toml

@@ -10,7 +10,6 @@ use alloc::{
     ffi::{CString, NulError},
     string::{String, ToString},
 };
-use num_traits::FromPrimitive;
 use powersync_sqlite_nostd::{self as sqlite, Connection, Context, ResultCode, context, sqlite3};
 use thiserror::Error;
 
@@ -152,20 +151,6 @@ impl PowerSyncError {
         }
     }
 
-    pub fn can_retry(&self) -> bool {
-        match self.inner.as_ref() {
-            RawPowerSyncError::Sqlite(cause) => {
-                let base_error = ResultCode::from_i32((cause.code as i32) & 0xFF);
-                if base_error == Some(ResultCode::BUSY) || base_error == Some(ResultCode::LOCKED) {
-                    true
-                } else {
-                    false
-                }
-            }
-            _ => false,
-        }
-    }
-
     pub fn check_sqlite3_version() -> Result<()> {
         let actual_version = sqlite::libversion_number();