fix(deps): bson 3.x/mongodb feature mismatch broke default build

CHANGELOG.md

@@ -1,3 +1,7 @@
+## v0.5.1218 — bson 3.x/mongodb crate type mismatch broke the default build (#5830 follow-up)
+
+`deps(deps): bump bson from 2.15.0 to 3.1.0` (#5830) merged clean through CI but broke `cargo build`/`cargo check -p perry-stdlib` (and `perry-ext-mongodb`) under default features: two regressions stacked. (1) bson 3.x made serde support opt-in (`bson::Document` no longer implements `serde::{Serialize,Deserialize}` without the `serde` feature) — our direct `bson = "3.1"` dep in `perry-stdlib`/`perry-ext-mongodb` didn't request it, so every `serde_json::from_str::<Document>` call failed to typecheck. (2) The `mongodb` crate's `compat-3-0-0` feature (which we had carried over unchanged from the pre-bump Cargo.toml) actually selects the crate's **bson-2** internals (`mongodb::bson` re-exported bson 2.15.0), not bson 3 — so `Collection<bson::Document>` methods (`find_one`, `update_one`, etc.) expected the *other* bson major version than the one our own code passed in, and `Cargo.lock` carried both bson 2.15.0 and 3.1.0 simultaneously. Fix: add `features = ["serde"]` to both crates' `bson` dependency, and swap the `mongodb` dependency's `compat-3-0-0` feature for `bson-3` (plus the now-required `compat-3-3-0` marker) so `mongodb`'s internal bson matches our direct dependency — collapses back to a single resolved `bson` version. Caught by `cargo check -p perry-stdlib -p perry-ext-mongodb` with default features; CI's `cargo-test` job apparently didn't exercise this combination for #5830, which is worth follow-up (tracked informally, no issue filed yet).
+
 ## v0.5.1217 — switch inside async/generator state machines miscompiled (#5885, fixes #5868)
 
 Two state-machine defects, one shared fix. (1) A `yield`/`await` inside a switch case was silently lowered to `0`: the linearizer had no `Stmt::Switch` arm, so the switch fell to the catch-all, was emitted unsplit inside one state, and codegen's fallback lowered the residual `Expr::Yield` to `0.0` — `async f(x){ switch(x){ case 1: return await g() } }` resolved to `0` without suspending, and a generator `yield` inside a case vanished. (2) A loop-level `continue` inside a yield-free switch in a CPS'd loop survived as a raw `Stmt::Continue` the dispatch loop ignored, silently running the rest of the iteration. Both live in production paths since #5854 put async class methods through CPS; minifiers turn if-chains into switches routinely. New `desugar_switch_to_ifs` (generator/break_continue.rs): discriminant temp + match-index + guarded-`if` chain preserving JS switch semantics (single-eval discriminant, in-order first-match-wins tests, fallthrough, default-in-the-middle, `break` — incl. from nested if/try — via done-flag with remainder guarding; `continue`/`return`/`throw` pass through). Wired into a new yielding-switch `linearize_body` arm, a splice in `rewrite_break_continue_in_stmts` for continue-bearing yield-free switches (`next_local_id` threaded through), and the labeled arm (`break label` → plain break in a labeled switch). e2e: `crates/perry/tests/issue_5868_switch_state_machine.rs` (9 scenarios vs node). Note: this PR's labeled run showed parity/smokes/doc-tests failing to BUILD with the pre-existing #5466 E0308 feature-combo breakage (#5872) — zero parity tests executed; compiler-output-regression and the full cargo-test suite are green.

CLAUDE.md

@@ -8,7 +8,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 Perry is a native TypeScript compiler written in Rust that compiles TypeScript source code directly to native executables. It uses SWC for TypeScript parsing and LLVM for code generation.
 
-**Current Version:** 0.5.1217
+**Current Version:** 0.5.1218
 
 
 ## TypeScript Parity Status

Cargo.toml

@@ -301,7 +301,7 @@ strip = false
 codegen-units = 16
 
 [workspace.package]
-version = "0.5.1217"
+version = "0.5.1218"
 edition = "2021"
 license = "MIT"
 repository = "https://github.com/PerryTS/perry"

crates/perry-ext-mongodb/Cargo.toml

@@ -10,8 +10,8 @@ crate-type = ["staticlib", "rlib"]
 
 [dependencies]
 perry-ffi.workspace = true
-mongodb = { version = "3.7", default-features = false, features = ["compat-3-0-0", "rustls-tls", "dns-resolver"] }
-bson = "3.1"
+mongodb = { version = "3.7", default-features = false, features = ["bson-3", "compat-3-3-0", "rustls-tls", "dns-resolver"] }
+bson = { version = "3.1", features = ["serde"] }
 tokio = { workspace = true }
 futures-util = "0.3"
 serde_json = "1"

crates/perry-stdlib/Cargo.toml

@@ -377,8 +377,8 @@ rustls-pemfile = { version = "2", optional = true }
 # Database
 sqlx = { version = "0.9.0", default-features = false, features = ["runtime-tokio", "mysql", "postgres", "chrono"], optional = true }
 redis = { version = "1.2", features = ["tokio-comp", "connection-manager"], optional = true }
-mongodb = { version = "3.7", default-features = false, features = ["compat-3-0-0", "rustls-tls", "dns-resolver"], optional = true }
-bson = { version = "3.1", optional = true }
+mongodb = { version = "3.7", default-features = false, features = ["bson-3", "compat-3-3-0", "rustls-tls", "dns-resolver"], optional = true }
+bson = { version = "3.1", optional = true, features = ["serde"] }
 rusqlite = { version = "0.37", features = ["bundled", "column_decltype", "limits", "session"], optional = true }
 
 # Crypto