feat: remove conditional unstable type-checking (#21825)

This commit removes conditional type-checking of unstable APIs.

Before this commit `deno check` (or any other type-checking command and
the LSP) would error out if there was an unstable API in the code, but not
`--unstable` flag provided.

This situation hinders DX and makes it harder to configure Deno. Failing
during runtime unless `--unstable` flag is provided is enough in this case.

cli/lsp/language_server.rs

@@ -1126,7 +1126,7 @@ impl Inner {
       "experimentalDecorators": true,
       "isolatedModules": true,
       "jsx": "react",
-      "lib": ["deno.ns", "deno.window"],
+      "lib": ["deno.ns", "deno.window", "deno.unstable"],
       "module": "esnext",
       "moduleDetection": "force",
       "noEmit": true,
@@ -1137,14 +1137,6 @@ impl Inner {
       // TODO(@kitsonk) remove for Deno 1.15
       "useUnknownInCatchVariables": false,
     }));
-    let config = &self.config;
-    let workspace_settings = config.workspace_settings();
-    if workspace_settings.unstable {
-      let unstable_libs = json!({
-        "lib": ["deno.ns", "deno.window", "deno.unstable"]
-      });
-      tsconfig.merge(&unstable_libs);
-    }
     if let Err(err) = self.merge_user_tsconfig(&mut tsconfig) {
       self.client.show_message(MessageType::WARNING, err);
     }

cli/main.rs

@@ -195,7 +195,7 @@ async fn run_subcommand(flags: Flags) -> Result<i32, AnyError> {
       })
     }
     DenoSubcommand::Types => spawn_subcommand(async move {
-      let types = tsc::get_types_declaration_file_text(flags.unstable);
+      let types = tsc::get_types_declaration_file_text();
       display::write_to_stdout_ignore_sigpipe(types.as_bytes())
     }),
     #[cfg(feature = "upgrade")]

cli/tests/integration/lsp_tests.rs

@@ -1904,7 +1904,7 @@ fn lsp_exclude_config() {
 }
 
 #[test]
-fn lsp_hover_unstable_disabled() {
+fn lsp_hover_unstable_always_enabled() {
   let context = TestContextBuilder::new().use_temp_cwd().build();
   let mut client = context.new_lsp_command().build();
   client.initialize_default();
@@ -1933,9 +1933,10 @@ fn lsp_hover_unstable_disabled() {
       "contents":[
         {
           "language":"typescript",
-          "value": "type Deno.ForeignLibraryInterface = /*unresolved*/ any",
+          "value":"interface Deno.ForeignLibraryInterface"
         },
-        "",
+        "**UNSTABLE**: New API, yet to be vetted.\n\nA foreign library interface descriptor.",
+        "\n\n*@category* - FFI",
       ],
       "range":{
         "start":{ "line":0, "character":14 },
@@ -1951,6 +1952,7 @@ fn lsp_hover_unstable_enabled() {
   let context = TestContextBuilder::new().use_temp_cwd().build();
   let mut client = context.new_lsp_command().build();
   client.initialize(|builder| {
+    // NOTE(bartlomieju): this is effectively not used anymore.
     builder.set_unstable(true);
   });
   client.did_open(json!({

cli/tools/doc.rs

@@ -1,6 +1,5 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 
-use crate::args::CliOptions;
 use crate::args::DocFlags;
 use crate::args::DocHtmlFlag;
 use crate::args::DocSourceFileFlag;
@@ -28,17 +27,15 @@ use indexmap::IndexMap;
 use std::collections::BTreeMap;
 use std::path::PathBuf;
 use std::rc::Rc;
-use std::sync::Arc;
 
 async fn generate_doc_nodes_for_builtin_types(
   doc_flags: DocFlags,
-  cli_options: &Arc<CliOptions>,
   parser: &dyn ModuleParser,
   analyzer: &dyn ModuleAnalyzer,
 ) -> Result<IndexMap<ModuleSpecifier, Vec<doc::DocNode>>, AnyError> {
   let source_file_specifier =
     ModuleSpecifier::parse("internal://lib.deno.d.ts").unwrap();
-  let content = get_types_declaration_file_text(cli_options.unstable());
+  let content = get_types_declaration_file_text();
   let mut loader = deno_graph::source::MemoryLoader::new(
     vec![(
       source_file_specifier.to_string(),
@@ -86,7 +83,6 @@ pub async fn doc(flags: Flags, doc_flags: DocFlags) -> Result<(), AnyError> {
     DocSourceFileFlag::Builtin => {
       generate_doc_nodes_for_builtin_types(
         doc_flags.clone(),
-        cli_options,
         &capturing_parser,
         &analyzer,
       )
@@ -156,7 +152,6 @@ pub async fn doc(flags: Flags, doc_flags: DocFlags) -> Result<(), AnyError> {
     let deno_ns = if doc_flags.source_files != DocSourceFileFlag::Builtin {
       let deno_ns = generate_doc_nodes_for_builtin_types(
         doc_flags.clone(),
-        cli_options,
         &capturing_parser,
         &analyzer,
       )

cli/tsc/mod.rs

@@ -78,14 +78,14 @@ pub static COMPILER_SNAPSHOT: Lazy<Box<[u8]>> = Lazy::new(
   },
 );
 
-pub fn get_types_declaration_file_text(unstable: bool) -> String {
+pub fn get_types_declaration_file_text() -> String {
   let mut assets = get_asset_texts_from_new_runtime()
     .unwrap()
     .into_iter()
     .map(|a| (a.specifier, a.text))
     .collect::<HashMap<_, _>>();
 
-  let mut lib_names = vec![
+  let lib_names = vec![
     "deno.ns",
     "deno.console",
     "deno.url",
@@ -100,12 +100,9 @@ pub fn get_types_declaration_file_text(unstable: bool) -> String {
     "deno.shared_globals",
     "deno.cache",
     "deno.window",
+    "deno.unstable",
   ];
 
-  if unstable {
-    lib_names.push("deno.unstable");
-  }
-
   lib_names
     .into_iter()
     .map(|name| {