Improve TypeScript task detection (#31711)

Parses project's package.json to better detect Jasmine, Jest, Vitest and
Mocha and `test`, `build` scripts presence.
Also tries to detect `pnpm` and `npx` as test runners, falls back to
`npm`.


https://github.com/user-attachments/assets/112d3d8b-8daa-4ba5-8cb5-2f483036bd98

Release Notes:

- Improved TypeScript task detection

crates/language/src/language.rs

@@ -64,7 +64,7 @@ use std::{
 use std::{num::NonZeroU32, sync::OnceLock};
 use syntax_map::{QueryCursorHandle, SyntaxSnapshot};
 use task::RunnableTag;
-pub use task_context::{ContextProvider, RunnableRange};
+pub use task_context::{ContextLocation, ContextProvider, RunnableRange};
 pub use text_diff::{
     DiffOptions, apply_diff_patch, line_diff, text_diff, text_diff_with_options, unified_diff,
 };

crates/language/src/task_context.rs

@@ -1,9 +1,10 @@
-use std::{ops::Range, sync::Arc};
+use std::{ops::Range, path::PathBuf, sync::Arc};
 
 use crate::{LanguageToolchainStore, Location, Runnable};
 
 use anyhow::Result;
 use collections::HashMap;
+use fs::Fs;
 use gpui::{App, Task};
 use lsp::LanguageServerName;
 use task::{TaskTemplates, TaskVariables};
@@ -26,11 +27,12 @@ pub trait ContextProvider: Send + Sync {
     fn build_context(
         &self,
         _variables: &TaskVariables,
-        _location: &Location,
+        _location: ContextLocation<'_>,
         _project_env: Option<HashMap<String, String>>,
         _toolchains: Arc<dyn LanguageToolchainStore>,
         _cx: &mut App,
     ) -> Task<Result<TaskVariables>> {
+        let _ = _location;
         Task::ready(Ok(TaskVariables::default()))
     }
 
@@ -48,3 +50,10 @@ pub trait ContextProvider: Send + Sync {
         None
     }
 }
+
+/// Metadata about the place in the project we gather the context for.
+pub struct ContextLocation<'a> {
+    pub fs: Option<Arc<dyn Fs>>,
+    pub worktree_root: Option<PathBuf>,
+    pub file_location: &'a Location,
+}