feat(useNamingConvention): add options for custom conventions

CHANGELOG.md

@@ -43,6 +43,42 @@ our [guidelines for writing a good changelog entry](https://github.com/biomejs/b
 
 ### Linter
 
+#### New features
+
+- [useNamingConvention](https://biomejs.dev/linter/rules/use-naming-convention/) now supports an option to enforce custom convention ([#1900](https://github.com/biomejs/biome/issues/1900)).
+
+  For example, you can enforce the use of a prefix for private class members:
+
+  ```json
+  {
+  	"linter": {
+  		"rules": {
+  			"style": {
+  				"useNamingConvention": {
+  					"level": "error",
+  					"options": {
+  						"custom": [
+  							{
+  								"selector": {
+  									"kind": "classMember",
+  									"modifiers": ["private"]
+  								},
+  								"match": "_(.*)",
+                  "formats": ["camelCase"]
+  							}
+  						]
+  					}
+  				}
+  			}
+  		}
+  	}
+  }
+  ```
+
+  Please, find more details in the [rule documentation](https://biomejs.dev/linter/rules/use-naming-convention/#custom-convention).
+
+  Contributed by @Conaclos
+
 #### Bug fixes
 
 - `useJsxKeyInIterable` now handles more cases involving fragments. See the snippets below. Contributed by @dyc3

Cargo.toml

@@ -157,6 +157,7 @@ bpaf               = { version = "0.9.9", features = ["derive"] }
 countme            = "3.0.1"
 crossbeam          = "0.8.4"
 dashmap            = "5.4.0"
+enumflags2         = "0.7.3"
 getrandom          = "0.2.14"
 ignore             = "0.4.21"
 indexmap           = { version = "2.2.6", features = ["serde"] }
@@ -170,12 +171,12 @@ quote              = "1.0.36"
 rayon              = "1.8.1"
 regex              = "1.10.4"
 rustc-hash         = "1.1.0"
-schemars           = "0.8.17"
+schemars           = { version = "0.8.17", features = ["indexmap2", "smallvec"] }
 serde              = { version = "1.0.200", features = ["derive"] }
 serde_json         = "1.0.116"
 similar            = "2.5.0"
 slotmap            = "1.0.7"
-smallvec           = { version = "1.10.0", features = ["union", "const_new"] }
+smallvec           = { version = "1.10.0", features = ["union", "const_new", "serde"] }
 syn                = "1.0.109"
 termcolor          = "1.4.1"
 tokio              = "1.36.0"

crates/biome_cli/src/execute/migrate/eslint_typescript.rs

@@ -104,17 +104,18 @@ impl From<NamingConventionOptions> for use_naming_convention::NamingConventionOp
                 Some(NamingConventionCase::StrictCamel | NamingConventionCase::StrictPascal)
             ),
             require_ascii: false,
+            custom: Vec::new(),
             enum_member_case: enum_member_format
                 .and_then(|format| {
                     match format {
                         NamingConventionCase::Camel | NamingConventionCase::StrictCamel => {
-                            Some(use_naming_convention::EnumMemberCase::Camel)
+                            Some(use_naming_convention::Format::Camel)
                         }
                         NamingConventionCase::Pascal | NamingConventionCase::StrictPascal => {
-                            Some(use_naming_convention::EnumMemberCase::Pascal)
+                            Some(use_naming_convention::Format::Pascal)
                         }
                         NamingConventionCase::Upper => {
-                            Some(use_naming_convention::EnumMemberCase::Constant)
+                            Some(use_naming_convention::Format::Constant)
                         }
                         // Biome doesn't support `snake_case` for enum member
                         NamingConventionCase::Snake => None,

crates/biome_deserialize/Cargo.toml

@@ -21,9 +21,11 @@ bitflags                 = { workspace = true }
 indexmap                 = { workspace = true, features = ["serde"] }
 schemars                 = { workspace = true, optional = true }
 serde                    = { workspace = true }
+smallvec                 = { workspace = true, optional = true }
 
 [features]
-schema = ["schemars", "schemars/indexmap"]
+schema   = ["schemars", "schemars/indexmap"]
+smallvec = ["dep:smallvec"]
 
 [lints]
 workspace = true

crates/biome_deserialize/src/impls.rs

@@ -14,6 +14,7 @@ use std::{
     num::{NonZeroU16, NonZeroU32, NonZeroU64, NonZeroU8, NonZeroUsize},
     ops::Deref,
     path::PathBuf,
+    u8,
 };
 
 /// Type that allows deserializing a string without heap-allocation.
@@ -531,6 +532,35 @@ impl<T: Deserializable> Deserializable for Vec<T> {
     }
 }
 
+#[cfg(feature = "smallvec")]
+impl<T: Deserializable, const L: usize> Deserializable for smallvec::SmallVec<[T; L]> {
+    fn deserialize(
+        value: &impl DeserializableValue,
+        name: &str,
+        diagnostics: &mut Vec<DeserializationDiagnostic>,
+    ) -> Option<Self> {
+        struct Visitor<T, const L: usize>(PhantomData<T>);
+        impl<T: Deserializable, const L: usize> DeserializationVisitor for Visitor<T, L> {
+            type Output = smallvec::SmallVec<[T; L]>;
+            const EXPECTED_TYPE: VisitableType = VisitableType::ARRAY;
+            fn visit_array(
+                self,
+                values: impl Iterator<Item = Option<impl DeserializableValue>>,
+                _range: TextRange,
+                _name: &str,
+                diagnostics: &mut Vec<DeserializationDiagnostic>,
+            ) -> Option<Self::Output> {
+                Some(
+                    values
+                        .filter_map(|value| Deserializable::deserialize(&value?, "", diagnostics))
+                        .collect(),
+                )
+            }
+        }
+        value.deserialize(Visitor(PhantomData), name, diagnostics)
+    }
+}
+
 impl<T: Deserializable + Eq + Hash, S: BuildHasher + Default> Deserializable for HashSet<T, S> {
     fn deserialize(
         value: &impl DeserializableValue,

crates/biome_js_analyze/Cargo.toml

@@ -15,7 +15,7 @@ biome_analyze            = { workspace = true }
 biome_aria               = { workspace = true }
 biome_console            = { workspace = true }
 biome_control_flow       = { workspace = true }
-biome_deserialize        = { workspace = true }
+biome_deserialize        = { workspace = true, features = ["smallvec"] }
 biome_deserialize_macros = { workspace = true }
 biome_diagnostics        = { workspace = true }
 biome_js_factory         = { workspace = true }
@@ -26,8 +26,11 @@ biome_rowan              = { workspace = true }
 biome_string_case        = { workspace = true }
 biome_suppression        = { workspace = true }
 biome_unicode_table      = { workspace = true }
+bitflags                 = { workspace = true }
+enumflags2               = { workspace = true }
 lazy_static              = { workspace = true }
 natord                   = "1.0.9"
+regex                    = { workspace = true }
 roaring                  = "0.10.4"
 rustc-hash               = { workspace = true }
 schemars                 = { workspace = true, optional = true }

crates/biome_js_analyze/src/lint/correctness/no_unused_variables.rs

@@ -422,7 +422,7 @@ impl Rule for NoUnusedVariables {
                 let new_name = format!("_{}", name_trimmed);
 
                 let model = ctx.model();
-                mutation.rename_node_declaration(model, binding.clone(), &new_name);
+                mutation.rename_node_declaration(model, binding, &new_name);
 
                 Some(JsRuleAction {
                     mutation,

crates/biome_js_analyze/src/lint/style/use_filenaming_convention.rs

@@ -5,7 +5,7 @@ use biome_analyze::{
 use biome_console::markup;
 use biome_deserialize_macros::Deserializable;
 use biome_rowan::TextRange;
-use biome_string_case::Case;
+use biome_string_case::{Case, Cases};
 use rustc_hash::FxHashSet;
 use serde::{Deserialize, Serialize};
 use std::{hash::Hash, str::FromStr};
@@ -128,10 +128,8 @@ impl Rule for UseFilenamingConvention {
         if !allowed_cases.is_empty() {
             let trimmed_name = name.trim_matches('_');
             let case = Case::identify(trimmed_name, options.strict_case);
-            for allowed_case in allowed_cases {
-                if case.is_compatible_with(allowed_case) {
-                    return None;
-                }
+            if allowed_cases.contains(case) {
+                return None;
             }
         }
         if options.filename_cases.0.contains(&FilenameCase::Export) {
@@ -166,7 +164,7 @@ impl Rule for UseFilenamingConvention {
             },
             FileNamingConventionState::Filename => {
                 let allowed_cases = options.filename_cases.cases();
-                let allowed_case_names = allowed_cases.iter().map(|style| style.to_string());
+                let allowed_case_names = allowed_cases.into_iter().map(|case| case.to_string());
                 let allowed_case_names = if options.filename_cases.0.contains(&FilenameCase::Export) {
                     allowed_case_names
                         .chain(["equal to the name of an export".to_string()])
@@ -209,7 +207,7 @@ impl Rule for UseFilenamingConvention {
                     }
                 }
                 let suggested_filenames = allowed_cases
-                    .iter()
+                    .into_iter()
                     .map(|case| file_name.replacen(trimmed_name, &case.convert(trimmed_name), 1))
                     // Deduplicate suggestions
                     .collect::<FxHashSet<_>>()
@@ -299,11 +297,11 @@ impl Default for FilenamingConventionOptions {
 pub struct FilenameCases(FxHashSet<FilenameCase>);
 
 impl FilenameCases {
-    fn cases(&self) -> SmallVec<[Case; 3]> {
+    fn cases(&self) -> Cases {
         self.0
             .iter()
             .filter_map(|case| Case::try_from(*case).ok())
-            .collect()
+            .fold(Cases::empty(), |acc, case| acc | case)
     }
 }