Before error type refactor

rust_compiler/Cargo.lock

@@ -572,6 +572,7 @@ dependencies = [
  "lsp-types",
  "pretty_assertions",
  "quick-error",
+ "thiserror",
  "tokenizer",
 ]
 
@@ -998,6 +999,26 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
 
+[[package]]
+name = "thiserror"
+version = "2.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f63587ca0f12b72a0600bcba1d40081f830876000bb46dd2337a3051618f4fc8"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "2.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ff15c8ecd7de3849db632e14d18d2571fa09dfc5ed93479bc4485c7a517c913"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.111",
+]
+
 [[package]]
 name = "tinyvec"
 version = "1.10.0"
@@ -1023,6 +1044,7 @@ dependencies = [
  "lsp-types",
  "quick-error",
  "rust_decimal",
+ "thiserror",
 ]
 
 [[package]]