Check and fix typos

crates/ide/src/def/liveness.rs

@@ -1,5 +1,5 @@
 //! Liveness check of names.
-//! It locates uncessary or inaccessible bindings and expressions, based on name resolution.
+//! It locates unnecessary or inaccessible bindings and expressions, based on name resolution.
 //!
 //! Our goals are,
 //! - Applicable.

crates/ide/src/def/mod.rs

@@ -101,7 +101,7 @@ fn source_root_referrer_graph(
     db: &dyn DefDatabase,
     sid: SourceRootId,
 ) -> Arc<HashMap<FileId, ModuleReferrers>> {
-    // Assert our inline threshould costs no extra memory.
+    // Assert our inline threshold costs no extra memory.
     const _: [(); std::mem::size_of::<Vec<FileId>>()] =
         [(); std::mem::size_of::<ModuleReferrers>()];
 

crates/ide/src/tests.rs

@@ -127,7 +127,7 @@ impl Fixture {
                             let target = VfsPath::new(target);
                             flake_info.input_store_paths.insert(name.into(), target);
                         } else {
-                            bail!("Unknow property {prop}");
+                            bail!("Unknown property {prop}");
                         }
                     }
                 } else if iter.next().is_some() {

crates/nil/src/main.rs

@@ -118,14 +118,14 @@ fn main() {
 fn main_diagnostics(args: DiagnosticsArgs) {
     let ret = emit_diagnostics_for_files(&args.paths);
 
-    let fail_threshould = if args.deny_warnings {
+    let fail_threshold = if args.deny_warnings {
         Severity::Warning
     } else {
         Severity::Error
     };
 
     match ret {
-        Ok(Some(severity)) if severity >= fail_threshould => process::exit(1),
+        Ok(Some(severity)) if severity >= fail_threshold => process::exit(1),
         Ok(_) => {}
         Err(err) => {
             eprintln!("{err:#}");

dev/flake.nix

@@ -41,7 +41,10 @@
                 # mismatch.
                 # If you do want a locked one, use `devShells.full` below.
 
-                fd # Used by pre-push
+                # Used by pre-push
+                fd
+                typos
+
                 nodejs
                 watchman # Required by coc.nvim for file watching.
 

dev/pre-push.sh

@@ -1,12 +1,15 @@
 #!/usr/bin/env bash
 set -eu
-# Requires: [ git nixfmt-rfc-style fd ], rust toolchain, npm toolchain
+# Requires: [ git nixfmt-rfc-style fd typos ], rust toolchain, npm toolchain
 
 die() { echo "$*" >&2; exit 1; }
 
 if git_dir="$(git rev-parse --show-toplevel)"; then
   cd "$git_dir"
 fi
+
+typos || die "typos"
+
 cargo fmt --all --check \
   || die 'cargo fmt failed'
 fd -e nix --exclude=crates/syntax/test_data --exec-batch nixfmt --check \

typos.toml

@@ -4,6 +4,7 @@ extend-exclude = [
 ]
 
 [default.extend-words]
+typ = "typ" # Uncollide keyword `type`.
 froms = "froms"
 regist = "regist" # coc.nvim `registLanguageClient`
 withs = "withs"