feat(rome_service): internal errors as diagnostics

Cargo.toml

@@ -22,4 +22,5 @@ tracing = { version = "0.1.31", default-features = false, features = ["std"] }
 dashmap = "5.4.0"
 rustc-hash = "1.1.0"
 countme = "3.0.1"
-tokio = { version = "1.15.0" }
+tokio = { version = "1.15.0" }
+insta = "1.21.2"

crates/rome_cli/Cargo.toml

@@ -47,5 +47,5 @@ mimalloc = "0.1.29"
 tikv-jemallocator = "0.5.0"
 
 [dev-dependencies]
-insta = "1.18.2"
+insta = { workspace = true }
 tokio = { workspace = true, features = ["io-util"] }

crates/rome_diagnostics/src/lib.rs

@@ -37,6 +37,9 @@ pub use crate::error::{Error, Result};
 pub use crate::location::{
     FileId, FilePath, LineIndex, LineIndexBuf, Location, Resource, SourceCode,
 };
+use rome_console::fmt::{Formatter, Termcolor};
+use rome_console::markup;
+use std::fmt::Write;
 
 pub mod prelude {
     //! Anonymously re-exports all the traits declared by this module, this is
@@ -67,3 +70,25 @@ impl DiagnosticTag {
 }
 
 pub const MAXIMUM_DISPLAYABLE_DIAGNOSTICS: u16 = 200;
+
+/// Utility function for testing purpose. The function will print an [Error]
+/// to a string, which is then returned by the function.
+pub fn print_diagnostic_to_string(diagnostic: Error) -> String {
+    let mut buffer = termcolor::Buffer::no_color();
+
+    Formatter::new(&mut Termcolor(&mut buffer))
+        .write_markup(markup! {
+            {PrintDiagnostic::verbose(&diagnostic)}
+        })
+        .expect("failed to emit diagnostic");
+
+    let mut content = String::new();
+    writeln!(
+        content,
+        "{}",
+        std::str::from_utf8(buffer.as_slice()).expect("non utf8 in error buffer")
+    )
+    .unwrap();
+
+    content
+}

crates/rome_diagnostics_categories/src/categories.rs

@@ -144,6 +144,8 @@ define_dategories! {
     "suppressions/unused",
     "suppressions/deprecatedSyntax",
 
+    "configuration",
+
     // Used in tests and examples
     "args/fileNotFound",
     "flags/invalid",

crates/rome_formatter/Cargo.toml

@@ -19,11 +19,13 @@ countme = { workspace = true }
 drop_bomb = "0.1.5"
 indexmap = { workspace = true }
 unicode-width = "0.1.9"
+rome_diagnostics = { path = "../rome_diagnostics" }
+rome_console = { path = "../rome_console" }
 
 [dev-dependencies]
 rome_js_parser = { path = "../rome_js_parser"}
 rome_js_syntax = { path = "../rome_js_syntax" }
-rome_diagnostics = { path = "../rome_diagnostics" }
+insta = { workspace = true }
 
 [features]
 serde = ["dep:serde", "schemars", "rome_rowan/serde"]