diff --git a/crates/oxc_codegen/tests/integration/tester.rs b/crates/oxc_codegen/tests/integration/tester.rs
index 78207e0189949..8379400815490 100644
--- a/crates/oxc_codegen/tests/integration/tester.rs
+++ b/crates/oxc_codegen/tests/integration/tester.rs
@@ -4,7 +4,7 @@ use oxc_parser::Parser;
 use oxc_span::SourceType;
 
 pub fn test(source_text: &str, expected: &str) {
-    let source_type = SourceType::default().with_module(true).with_jsx(true);
+    let source_type = SourceType::jsx();
     let allocator = Allocator::default();
     let ret = Parser::new(&allocator, source_text, source_type).parse();
     let result = CodeGenerator::new()
@@ -22,7 +22,7 @@ pub fn test(source_text: &str, expected: &str) {
 }
 
 pub fn test_without_source(source_text: &str, expected: &str) {
-    let source_type = SourceType::default().with_module(true).with_jsx(true);
+    let source_type = SourceType::jsx();
     let allocator = Allocator::default();
     let ret = Parser::new(&allocator, source_text, source_type).parse();
     let result = CodeGenerator::new().build(&ret.program).source_text;
@@ -33,7 +33,7 @@ pub fn test_without_source(source_text: &str, expected: &str) {
 }
 
 pub fn test_minify(source_text: &str, expected: &str) {
-    let source_type = SourceType::default().with_module(true).with_jsx(true);
+    let source_type = SourceType::jsx();
     let allocator = Allocator::default();
     let ret = Parser::new(&allocator, source_text, source_type).parse();
     let result = CodeGenerator::new()
diff --git a/crates/oxc_codegen/tests/integration/ts.rs b/crates/oxc_codegen/tests/integration/ts.rs
index d8871432b1249..7de69c2551727 100644
--- a/crates/oxc_codegen/tests/integration/ts.rs
+++ b/crates/oxc_codegen/tests/integration/ts.rs
@@ -7,7 +7,7 @@ use oxc_span::SourceType;
 
 fn codegen(source_text: &str) -> String {
     let allocator = Allocator::default();
-    let source_type = SourceType::default().with_typescript(true).with_module(true);
+    let source_type = SourceType::ts();
     let ret = Parser::new(&allocator, source_text, source_type).parse();
     CodeGenerator::new()
         .with_options(CodegenOptions { single_quote: true, ..CodegenOptions::default() })
diff --git a/crates/oxc_isolated_declarations/src/lib.rs b/crates/oxc_isolated_declarations/src/lib.rs
index 129c4cb46bef4..37123dc073e3f 100644
--- a/crates/oxc_isolated_declarations/src/lib.rs
+++ b/crates/oxc_isolated_declarations/src/lib.rs
@@ -55,7 +55,7 @@ impl<'a> IsolatedDeclarations<'a> {
     ///
     /// Returns `Vec<Error>` if any errors were collected during the transformation.
     pub fn build(mut self, program: &Program<'a>) -> IsolatedDeclarationsReturn<'a> {
-        let source_type = SourceType::default().with_module(true).with_typescript_definition(true);
+        let source_type = SourceType::d_ts();
         let directives = self.ast.vec();
         let stmts = self.transform_program(program);
         let program = self.ast.program(SPAN, source_type, None, directives, stmts);
diff --git a/crates/oxc_linter/src/partial_loader/astro.rs b/crates/oxc_linter/src/partial_loader/astro.rs
index 0c6b897ffbc7d..bf9f5f52b2b7e 100644
--- a/crates/oxc_linter/src/partial_loader/astro.rs
+++ b/crates/oxc_linter/src/partial_loader/astro.rs
@@ -43,11 +43,7 @@ impl<'a> AstroPartialLoader<'a> {
 
         let js_code =
             Span::new(start + ASTRO_SPLIT.len() as u32, end).source_text(self.source_text);
-        Some(JavaScriptSource::new(
-            js_code,
-            SourceType::default().with_typescript(true).with_module(true),
-            start as usize,
-        ))
+        Some(JavaScriptSource::new(js_code, SourceType::ts(), start as usize))
     }
 
     /// In .astro files, you can add client-side JavaScript by adding one (or more) `<script>` tags.
@@ -89,7 +85,7 @@ impl<'a> AstroPartialLoader<'a> {
             };
             results.push(JavaScriptSource::new(
                 &self.source_text[js_start..js_end],
-                SourceType::default().with_typescript(true).with_module(true),
+                SourceType::ts(),
                 js_start,
             ));
         }
diff --git a/crates/oxc_linter/src/partial_loader/svelte.rs b/crates/oxc_linter/src/partial_loader/svelte.rs
index 045bcf0dcc0ca..e7da4d236bafa 100644
--- a/crates/oxc_linter/src/partial_loader/svelte.rs
+++ b/crates/oxc_linter/src/partial_loader/svelte.rs
@@ -41,7 +41,7 @@ impl<'a> SveltePartialLoader<'a> {
         let js_end = pointer + offset;
 
         let source_text = &self.source_text[js_start..js_end];
-        let source_type = SourceType::default().with_module(true).with_typescript(is_ts);
+        let source_type = SourceType::mjs().with_typescript(is_ts);
         Some(JavaScriptSource::new(source_text, source_type, js_start))
     }
 }
diff --git a/crates/oxc_linter/src/partial_loader/vue.rs b/crates/oxc_linter/src/partial_loader/vue.rs
index 414958d37c56e..584751fd7ccc3 100644
--- a/crates/oxc_linter/src/partial_loader/vue.rs
+++ b/crates/oxc_linter/src/partial_loader/vue.rs
@@ -56,8 +56,7 @@ impl<'a> VuePartialLoader<'a> {
         *pointer += offset + SCRIPT_END.len();
 
         let source_text = &self.source_text[js_start..js_end];
-        let source_type =
-            SourceType::default().with_module(true).with_typescript(is_ts).with_jsx(is_jsx);
+        let source_type = SourceType::mjs().with_typescript(is_ts).with_jsx(is_jsx);
         Some(JavaScriptSource::new(source_text, source_type, js_start))
     }
 }
diff --git a/crates/oxc_minifier/tests/mangler/mod.rs b/crates/oxc_minifier/tests/mangler/mod.rs
index 445431d044615..83459ef608f19 100644
--- a/crates/oxc_minifier/tests/mangler/mod.rs
+++ b/crates/oxc_minifier/tests/mangler/mod.rs
@@ -8,7 +8,7 @@ use oxc_span::SourceType;
 
 fn mangle(source_text: &str) -> String {
     let allocator = Allocator::default();
-    let source_type = SourceType::default().with_module(true);
+    let source_type = SourceType::mjs();
     let ret = Parser::new(&allocator, source_text, source_type).parse();
     let program = ret.program;
     let mangler = Mangler::new().build(&program);
diff --git a/crates/oxc_module_lexer/tests/esm.rs b/crates/oxc_module_lexer/tests/esm.rs
index 5870d3113fd67..f6b094bcfc3ce 100644
--- a/crates/oxc_module_lexer/tests/esm.rs
+++ b/crates/oxc_module_lexer/tests/esm.rs
@@ -67,7 +67,7 @@ pub struct ModuleLexer {
 
 fn parse(source: &str) -> ModuleLexer {
     let allocator = Allocator::default();
-    let source_type = SourceType::default().with_module(true);
+    let source_type = SourceType::mjs();
     let ret = Parser::new(&allocator, source, source_type).parse();
     assert!(ret.errors.is_empty(), "{source} should not produce errors.\n{:?}", ret.errors);
     let module_lexer = oxc_module_lexer::ModuleLexer::new().build(&ret.program);
@@ -1515,7 +1515,7 @@ fn export_default() {
 
 fn expect_parse_error(source: &str) {
     let allocator = Allocator::default();
-    let source_type = SourceType::default().with_module(true);
+    let source_type = SourceType::mjs();
     let ret = Parser::new(&allocator, source, source_type).parse();
     assert!(!ret.errors.is_empty());
 }
diff --git a/crates/oxc_module_lexer/tests/typescript.rs b/crates/oxc_module_lexer/tests/typescript.rs
index 60a6acc552dc4..4b1c547f6a7a8 100644
--- a/crates/oxc_module_lexer/tests/typescript.rs
+++ b/crates/oxc_module_lexer/tests/typescript.rs
@@ -6,7 +6,7 @@ use oxc_span::SourceType;
 
 fn parse(source: &str) -> ModuleLexer {
     let allocator = Allocator::default();
-    let source_type = SourceType::default().with_module(true).with_typescript_definition(true);
+    let source_type = SourceType::mjs().with_typescript_definition(true);
     let ret = Parser::new(&allocator, source, source_type).parse();
     assert!(ret.errors.is_empty(), "{source} should not produce errors.\n{:?}", ret.errors);
     let module_lexer = oxc_module_lexer::ModuleLexer::new().build(&ret.program);
diff --git a/crates/oxc_parser/src/lib.rs b/crates/oxc_parser/src/lib.rs
index 055ed30a37298..61b7865a74cc5 100644
--- a/crates/oxc_parser/src/lib.rs
+++ b/crates/oxc_parser/src/lib.rs
@@ -528,7 +528,7 @@ mod test {
     #[test]
     fn unambiguous() {
         let allocator = Allocator::default();
-        let source_type = SourceType::default().with_unambiguous(true);
+        let source_type = SourceType::unambiguous();
         assert!(source_type.is_unambiguous());
         let sources = ["import x from 'foo';", "export {x} from 'foo';", "import.meta"];
         for source in sources {
diff --git a/crates/oxc_semantic/src/lib.rs b/crates/oxc_semantic/src/lib.rs
index d584bb6523758..a506e75495288 100644
--- a/crates/oxc_semantic/src/lib.rs
+++ b/crates/oxc_semantic/src/lib.rs
@@ -295,7 +295,7 @@ mod tests {
     fn test_reference_resolutions_simple_read_write() {
         let alloc = Allocator::default();
         let target_symbol_name = Atom::from("a");
-        let typescript = SourceType::default().with_typescript(true).with_module(true);
+        let typescript = SourceType::ts();
         let sources = [
             // simple cases
             (SourceType::default(), "let a = 1; a = 2", ReferenceFlags::write()),
diff --git a/crates/oxc_semantic/src/module_record/mod.rs b/crates/oxc_semantic/src/module_record/mod.rs
index dee148f6b0efe..67d64af8f1e81 100644
--- a/crates/oxc_semantic/src/module_record/mod.rs
+++ b/crates/oxc_semantic/src/module_record/mod.rs
@@ -15,7 +15,7 @@ mod module_record_tests {
     use crate::SemanticBuilder;
 
     fn build(source_text: &str) -> Arc<ModuleRecord> {
-        let source_type = SourceType::default().with_module(true);
+        let source_type = SourceType::mjs();
         let allocator = Allocator::default();
         let ret = Parser::new(&allocator, source_text, source_type).parse();
         let program = allocator.alloc(ret.program);
diff --git a/crates/oxc_semantic/tests/integration/util/mod.rs b/crates/oxc_semantic/tests/integration/util/mod.rs
index d45c10e451584..1ba05e62bf243 100644
--- a/crates/oxc_semantic/tests/integration/util/mod.rs
+++ b/crates/oxc_semantic/tests/integration/util/mod.rs
@@ -38,7 +38,7 @@ impl<'a> SemanticTester<'a> {
     ///
     /// Use [`SemanticTester::js`] for JavaScript test cases.
     pub fn ts(source_text: &'static str) -> Self {
-        Self::new(source_text, SourceType::default().with_module(true).with_typescript(true))
+        Self::new(source_text, SourceType::ts())
     }
 
     /// Create a new tester for a TypeScript test case with JSX.
@@ -52,7 +52,7 @@ impl<'a> SemanticTester<'a> {
     ///
     /// Use [`SemanticTester::ts`] for TypeScript test cases.
     pub fn js(source_text: &'static str) -> Self {
-        Self::new(source_text, SourceType::default().with_module(true))
+        Self::new(source_text, SourceType::mjs())
     }
 
     /// Create a new tester for some source text.
diff --git a/crates/oxc_span/src/source_type/mod.rs b/crates/oxc_span/src/source_type/mod.rs
index f3f9276a9a621..825c169913b82 100644
--- a/crates/oxc_span/src/source_type/mod.rs
+++ b/crates/oxc_span/src/source_type/mod.rs
@@ -74,7 +74,7 @@ pub enum LanguageVariant {
 impl Default for SourceType {
     #[inline]
     fn default() -> Self {
-        Self::js()
+        Self::mjs()
     }
 }
 
@@ -114,7 +114,7 @@ impl SourceType {
     /// ```
     /// # use oxc_span::SourceType;
     ///
-    /// let js = SourceType::js();
+    /// let js = SourceType::cjs();
     /// assert!(js.is_javascript());
     /// assert!(js.is_script()); // not a module
     /// assert!(!js.is_jsx());
@@ -123,7 +123,23 @@ impl SourceType {
     /// [`JavaScript`]: Language::JavaScript
     /// [`module`]: ModuleKind::Module
     /// [`JSX`]: LanguageVariant::Jsx
-    pub const fn js() -> Self {
+    pub const fn cjs() -> Self {
+        Self {
+            language: Language::JavaScript,
+            module_kind: ModuleKind::Script,
+            variant: LanguageVariant::Standard,
+        }
+    }
+
+    pub const fn mjs() -> Self {
+        Self {
+            language: Language::JavaScript,
+            module_kind: ModuleKind::Module,
+            variant: LanguageVariant::Standard,
+        }
+    }
+
+    pub const fn unambiguous() -> Self {
         Self {
             language: Language::JavaScript,
             module_kind: ModuleKind::Unambiguous,
@@ -144,12 +160,12 @@ impl SourceType {
     ///
     /// [`JavaScript`]: Language::JavaScript
     pub const fn jsx() -> Self {
-        Self::js().with_jsx(true)
+        Self::mjs().with_jsx(true)
     }
 
     /// Creates a [`SourceType`] representing a [`TypeScript`] file.
     ///
-    /// Unlike [`SourceType::js`], this method creates [`modules`]. Use
+    /// Unlike [`SourceType::cjs`], this method creates [`modules`]. Use
     /// [`SourceType::tsx`] for TypeScript files with [`JSX`] support.
     ///
     /// ## Example
@@ -325,7 +341,7 @@ impl SourceType {
     /// babel) also do not make a distinction between `.js` and `.jsx`. However,
     /// for TypeScript files, only `.tsx` files are treated as JSX.
     ///
-    /// Note that this behavior deviates from [`SourceType::js`], which produces
+    /// Note that this behavior deviates from [`SourceType::cjs`], which produces
     /// [`scripts`].
     ///
     /// ### Modules vs. Scripts.
@@ -492,7 +508,7 @@ mod tests {
             assert!(!ty.is_typescript(), "{ty:?}");
         }
 
-        assert_eq!(SourceType::js().with_jsx(true).with_unambiguous(true), js);
+        assert_eq!(SourceType::jsx().with_unambiguous(true), js);
         assert_eq!(SourceType::jsx().with_module(true), jsx);
 
         assert!(js.is_unambiguous());
diff --git a/tasks/website/src/linter/rules/test.rs b/tasks/website/src/linter/rules/test.rs
index 7b9f9310f4661..5e78991764daa 100644
--- a/tasks/website/src/linter/rules/test.rs
+++ b/tasks/website/src/linter/rules/test.rs
@@ -108,7 +108,7 @@ fn source_type_from_code_element(code: ElementRef) -> Option<SourceType> {
     match *lang {
         "javascript" | "js" => Some(SourceType::default()),
         "typescript" | "ts" => Some(SourceType::default().with_typescript(true)),
-        "tsx" => Some(SourceType::default().with_typescript(true).with_jsx(true)),
+        "tsx" => Some(SourceType::tsx()),
         // FIXME: lots of jsx examples are usefully succinct but not valid JSX.
         // "jsx" => Some(SourceType::default().with_jsx(true).with_always_strict(true)),
         _ => None,