// Runs before any test module is evaluated (see the --preload flag in the
// "test" script).
//
// src/db/index.ts opens the database and runs migrations in its module body,
// and src/config.ts reads DATA_DIR in its own. Both happen while imports are
// still being hoisted, i.e. before any statement in a test file or in
// helpers.ts can assign to config. Pointing DATA_DIR at a per-worker path
// here is the only way to get in front of that — otherwise every parallel
// worker opens the real ./data/hearthforge.db and they contend for the write
// lock ("SQLiteError: database is locked").
const worker = process.env.BUN_TEST_WORKER_ID;
process.env.DATA_DIR = worker ? `./data-test-${worker}` : "./data-test";

// One highlight worker per test process is plenty, and the pool is only
// built if a test actually highlights something.
process.env.HIGHLIGHT_WORKERS ??= "1";