feat(lsp): support formatting json and markdown files (#10180)

Resolves #9447
Resolves #9415

cli/lsp/diagnostics.rs

@@ -218,6 +218,17 @@ impl<'a> From<&'a diagnostics::Position> for lsp::Position {
   }
 }
 
+/// Check if diagnostics can be generated for the provided media type.
+pub fn is_diagnosable(media_type: MediaType) -> bool {
+  matches!(
+    media_type,
+    MediaType::TypeScript
+      | MediaType::JavaScript
+      | MediaType::Tsx
+      | MediaType::Jsx
+  )
+}
+
 fn get_diagnostic_message(diagnostic: &diagnostics::Diagnostic) -> String {
   if let Some(message) = diagnostic.message_text.clone() {
     message
@@ -312,8 +323,8 @@ async fn generate_lint_diagnostics(
           .lock()
           .await
           .get_version(specifier, &DiagnosticSource::DenoLint);
-        if version != current_version {
         let media_type = MediaType::from(specifier);
+        if version != current_version && is_diagnosable(media_type) {
           if let Ok(Some(source_code)) = documents.content(specifier) {
             if let Ok(references) = analysis::get_lint_references(
               specifier,
@@ -354,10 +365,11 @@ async fn generate_ts_diagnostics(
         let version = snapshot.documents.version(s);
         let current_version =
           collection.get_version(s, &DiagnosticSource::TypeScript);
-        if version == current_version {
-          None
-        } else {
+        let media_type = MediaType::from(s);
+        if version != current_version && is_diagnosable(media_type) {
           Some(s.clone())
+        } else {
+          None
         }
       })
       .collect()

cli/lsp/language_server.rs

@@ -10,7 +10,6 @@ use deno_core::serde_json;
 use deno_core::serde_json::json;
 use deno_core::serde_json::Value;
 use deno_core::ModuleSpecifier;
-use dprint_plugin_typescript as dprint;
 use log::error;
 use log::info;
 use log::warn;
@@ -30,13 +29,6 @@ use std::sync::atomic::Ordering;
 use std::sync::Arc;
 use tokio::fs;
 
-use crate::config_file::ConfigFile;
-use crate::config_file::TsConfig;
-use crate::deno_dir;
-use crate::import_map::ImportMap;
-use crate::logger;
-use crate::media_type::MediaType;
-
 use super::analysis;
 use super::analysis::ts_changes_to_edit;
 use super::analysis::CodeActionCollection;
@@ -62,6 +54,15 @@ use super::tsc::AssetDocument;
 use super::tsc::Assets;
 use super::tsc::TsServer;
 use super::urls;
+use crate::config_file::ConfigFile;
+use crate::config_file::TsConfig;
+use crate::deno_dir;
+use crate::import_map::ImportMap;
+use crate::logger;
+use crate::lsp::diagnostics::is_diagnosable;
+use crate::media_type::MediaType;
+use crate::tools::fmt::format_file;
+use crate::tools::fmt::get_typescript_config;
 
 pub const REGISTRIES_PATH: &str = "registries";
 const SOURCES_PATH: &str = "deps";
@@ -785,6 +786,11 @@ impl Inner {
     if !self.config.specifier_enabled(&specifier) {
       return Ok(None);
     }
+    let media_type = MediaType::from(&specifier);
+    if !is_diagnosable(media_type) {
+      return Ok(None);
+    }
+
     let mark = self.performance.mark("document_symbol", Some(&params));
 
     let line_index =
@@ -845,12 +851,8 @@ impl Inner {
 
     // TODO(lucacasonato): handle error properly
     let text_edits = tokio::task::spawn_blocking(move || {
-      let config = dprint::configuration::ConfigurationBuilder::new()
-        .deno()
-        .build();
-      // TODO(@kitsonk) this could be handled better in `cli/tools/fmt.rs` in the
-      // future.
-      match dprint::format_text(&file_path, &file_text, &config) {
+      let config = get_typescript_config();
+      match format_file(&file_path, &file_text, config) {
         Ok(new_text) => {
           Some(text::get_edits(&file_text, &new_text, line_index))
         }

cli/tests/integration_tests_lsp.rs

@@ -1659,3 +1659,126 @@ fn lsp_performance() {
   }
   shutdown(&mut client);
 }
+
+#[test]
+fn lsp_format_json() {
+  let mut client = init("initialize_params.json");
+  client
+    .write_notification(
+      "textDocument/didOpen",
+      json!({
+        "textDocument": {
+          "uri": "file:///a/file.json",
+          "languageId": "json",
+          "version": 1,
+          "text": "{\"key\":\"value\"}"
+        }
+      }),
+    )
+    .unwrap();
+
+  let (maybe_res, maybe_err) = client
+    .write_request::<_, _, Value>(
+      "textDocument/formatting",
+      json!({
+          "textDocument": {
+            "uri": "file:///a/file.json"
+          },
+          "options": {
+            "tabSize": 2,
+            "insertSpaces": true
+          }
+      }),
+    )
+    .unwrap();
+
+  assert!(maybe_err.is_none());
+  assert_eq!(
+    maybe_res,
+    Some(json!([
+      {
+        "range": {
+          "start": {
+            "line": 0,
+            "character": 1
+          },
+          "end": {
+            "line": 0,
+            "character": 1
+          }
+        },
+        "newText": " "
+      },
+      {
+        "range": {
+          "start": { "line": 0, "character": 7 },
+          "end": { "line": 0, "character": 7 }
+        },
+        "newText": " "
+      },
+      {
+        "range": {
+          "start": { "line": 0, "character": 14 },
+          "end": { "line": 0, "character": 15 }
+        },
+        "newText": " }\n"
+      }
+    ]))
+  );
+  shutdown(&mut client);
+}
+
+#[test]
+fn lsp_format_markdown() {
+  let mut client = init("initialize_params.json");
+  client
+    .write_notification(
+      "textDocument/didOpen",
+      json!({
+        "textDocument": {
+          "uri": "file:///a/file.md",
+          "languageId": "markdown",
+          "version": 1,
+          "text": "#   Hello World"
+        }
+      }),
+    )
+    .unwrap();
+
+  let (maybe_res, maybe_err) = client
+    .write_request::<_, _, Value>(
+      "textDocument/formatting",
+      json!({
+        "textDocument": {
+          "uri": "file:///a/file.md"
+        },
+        "options": {
+          "tabSize": 2,
+          "insertSpaces": true
+        }
+      }),
+    )
+    .unwrap();
+
+  assert!(maybe_err.is_none());
+  assert_eq!(
+    maybe_res,
+    Some(json!([
+      {
+        "range": {
+          "start": { "line": 0, "character": 1 },
+          "end": { "line": 0, "character": 3 }
+        },
+        "newText": ""
+      },
+      {
+        "range": {
+          "start": { "line": 0, "character": 15 },
+          "end": { "line": 0, "character": 15 }
+        },
+        "newText": "\n"
+      }
+    ]))
+  );
+  shutdown(&mut client);
+}

cli/tools/fmt.rs

@@ -152,6 +152,22 @@ fn format_json(file_text: &str) -> Result<String, String> {
   dprint_plugin_json::format_text(&file_text, &json_config)
 }
 
+/// Formats a single TS, TSX, JS, JSX, JSONC, JSON, or MD file.
+pub fn format_file(
+  file_path: &Path,
+  file_text: &str,
+  config: dprint_plugin_typescript::configuration::Configuration,
+) -> Result<String, String> {
+  let ext = get_extension(file_path).unwrap_or_else(String::new);
+  if ext == "md" {
+    format_markdown(&file_text, config)
+  } else if matches!(ext.as_str(), "json" | "jsonc") {
+    format_json(&file_text)
+  } else {
+    dprint_plugin_typescript::format_text(&file_path, &file_text, &config)
+  }
+}
+
 async fn check_source_files(
   config: dprint_plugin_typescript::configuration::Configuration,
   paths: Vec<PathBuf>,
@@ -168,15 +184,8 @@ async fn check_source_files(
     move |file_path| {
       checked_files_count.fetch_add(1, Ordering::Relaxed);
       let file_text = read_file_contents(&file_path)?.text;
-      let ext = get_extension(&file_path).unwrap_or_else(String::new);
-      let r = if ext == "md" {
-        format_markdown(&file_text, config.clone())
-      } else if matches!(ext.as_str(), "json" | "jsonc") {
-        format_json(&file_text)
-      } else {
-        dprint_plugin_typescript::format_text(&file_path, &file_text, &config)
-      };
-      match r {
+
+      match format_file(&file_path, &file_text, config) {
         Ok(formatted_text) => {
           if formatted_text != file_text {
             not_formatted_files_count.fetch_add(1, Ordering::Relaxed);
@@ -229,19 +238,8 @@ async fn format_source_files(
     move |file_path| {
       checked_files_count.fetch_add(1, Ordering::Relaxed);
       let file_contents = read_file_contents(&file_path)?;
-      let ext = get_extension(&file_path).unwrap_or_else(String::new);
-      let r = if ext == "md" {
-        format_markdown(&file_contents.text, config.clone())
-      } else if matches!(ext.as_str(), "json" | "jsonc") {
-        format_json(&file_contents.text)
-      } else {
-        dprint_plugin_typescript::format_text(
-          &file_path,
-          &file_contents.text,
-          &config,
-        )
-      };
-      match r {
+
+      match format_file(&file_path, &file_contents.text, config) {
         Ok(formatted_text) => {
           if formatted_text != file_contents.text {
             write_file_contents(
@@ -293,19 +291,9 @@ pub fn format_stdin(check: bool, ext: String) -> Result<(), AnyError> {
     return Err(generic_error("Failed to read from stdin"));
   }
   let config = get_typescript_config();
-  let r = if ext.as_str() == "md" {
-    format_markdown(&source, config)
-  } else if matches!(ext.as_str(), "json" | "jsonc") {
-    format_json(&source)
-  } else {
-    // dprint will fallback to jsx parsing if parsing this as a .ts file doesn't work
-    dprint_plugin_typescript::format_text(
-      &PathBuf::from("_stdin.ts"),
-      &source,
-      &config,
-    )
-  };
-  match r {
+  let file_path = PathBuf::from(format!("_stdin.{}", ext));
+
+  match format_file(&file_path, &source, config) {
     Ok(formatted_text) => {
       if check {
         if formatted_text != source {
@@ -330,7 +318,7 @@ fn files_str(len: usize) -> &'static str {
   }
 }
 
-fn get_typescript_config(
+pub fn get_typescript_config(
 ) -> dprint_plugin_typescript::configuration::Configuration {
   dprint_plugin_typescript::configuration::ConfigurationBuilder::new()
     .deno()