fix(common): Fix logic for excluding FileName from source maps (#7900)

**Description:**

This PR also modifies React transform to use `FileName::Internal` and makes `SourceMapGenConfig` skips `FileName::Internal`.

**Related issue:**

 - Closes #5272

crates/swc/src/lib.rs

@@ -681,10 +681,10 @@ impl SourceMapGenConfig for SwcSourceMapConfig<'_> {
     }
 
     fn skip(&self, f: &FileName) -> bool {
-        if let FileName::Custom(s) = f {
+        match f {
-            s.starts_with('<')
+            FileName::Internal(..) => true,
-        } else {
+            FileName::Custom(s) => s.starts_with('<'),
-            false
+            _ => false,
         }
     }
 }

crates/swc/tests/fixture/issues-5xxx/5272/1/input/.swcrc

@@ -0,0 +1,20 @@
+{
+    "sourceMaps": true,
+    "module": {
+        "type": "commonjs",
+        "strict": false,
+        "strictMode": false
+    },
+    "jsc": {
+        "target": "es5",
+        "parser": {
+            "syntax": "typescript",
+            "dynamicImport": true
+        },
+        "transform": {
+            "hidden": {
+                "jest": true
+            }
+        }
+    },
+}

crates/swc/tests/fixture/issues-5xxx/5272/1/input/source/a/a.spec.ts

@@ -0,0 +1,9 @@
+import { Foo } from "./a";
+
+describe("a", () => {
+    it("does its thing", () => {
+        const a = new Foo();
+        expect(a.bar()).toBe(3);
+        expect(a.foo()).toBe(2);
+    });
+});

crates/swc/tests/fixture/issues-5xxx/5272/1/input/source/a/a.ts

@@ -0,0 +1,6 @@
+import { Base } from "../b/base";
+export class Foo extends Base {
+    bar() {
+        return 1 + this.foo();
+    }
+}

crates/swc/tests/fixture/issues-5xxx/5272/1/output/a.map

@@ -0,0 +1,16 @@
+{
+  "mappings": ";;;+BACaA;;;eAAAA;;;;;;;oBADQ;AACd,IAAA,AAAMA,oBAAN;;gBAAMA;iCAAAA;aAAAA;kCAAAA;;;oBAAAA;;YACTC,KAAAA;mBAAAA,SAAAA;gBACI,OAAO,IAAI,IAAI,CAACC,GAAG;YACvB;;;WAHSF;EAAYG,UAAI",
+  "names": [
+    "Foo",
+    "bar",
+    "foo",
+    "Base"
+  ],
+  "sources": [
+    "../../input/source/a/a.ts"
+  ],
+  "sourcesContent": [
+    "import { Base } from \"../b/base\";\nexport class Foo extends Base {\n    bar() {\n        return 1 + this.foo();\n    }\n}"
+  ],
+  "version": 3
+}

crates/swc/tests/fixture/issues-5xxx/5272/1/output/a.spec.map

@@ -0,0 +1,20 @@
+{
+  "mappings": ";;;iBAAoB;AAEpBA,SAAS,KAAK;IACVC,GAAG,kBAAkB;QACjB,IAAMC,IAAI,IAAIC,MAAG;QACjBC,OAAOF,EAAEG,GAAG,IAAIC,IAAI,CAAC;QACrBF,OAAOF,EAAEK,GAAG,IAAID,IAAI,CAAC;IACzB;AACJ",
+  "names": [
+    "describe",
+    "it",
+    "a",
+    "Foo",
+    "expect",
+    "bar",
+    "toBe",
+    "foo"
+  ],
+  "sources": [
+    "../../input/source/a/a.spec.ts"
+  ],
+  "sourcesContent": [
+    "import { Foo } from \"./a\";\n\ndescribe(\"a\", () => {\n    it(\"does its thing\", () => {\n        const a = new Foo();\n        expect(a.bar()).toBe(3);\n        expect(a.foo()).toBe(2);\n    });\n});"
+  ],
+  "version": 3
+}

crates/swc/tests/fixture/issues-5xxx/5272/1/output/source/a/a.spec.ts

@@ -0,0 +1,11 @@
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+var _a = require("./a");
+describe("a", function() {
+    it("does its thing", function() {
+        var a = new _a.Foo();
+        expect(a.bar()).toBe(3);
+        expect(a.foo()).toBe(2);
+    });
+});

crates/swc/tests/fixture/issues-5xxx/5272/1/output/source/a/a.ts

@@ -0,0 +1,32 @@
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+Object.defineProperty(exports, "Foo", {
+    enumerable: true,
+    get: function() {
+        return Foo;
+    }
+});
+var _class_call_check = require("@swc/helpers/_/_class_call_check");
+var _create_class = require("@swc/helpers/_/_create_class");
+var _inherits = require("@swc/helpers/_/_inherits");
+var _create_super = require("@swc/helpers/_/_create_super");
+var _base = require("../b/base");
+var Foo = /*#__PURE__*/ function(Base) {
+    "use strict";
+    _inherits._(Foo, Base);
+    var _super = _create_super._(Foo);
+    function Foo() {
+        _class_call_check._(this, Foo);
+        return _super.apply(this, arguments);
+    }
+    _create_class._(Foo, [
+        {
+            key: "bar",
+            value: function bar() {
+                return 1 + this.foo();
+            }
+        }
+    ]);
+    return Foo;
+}(_base.Base);

crates/swc_common/src/source_map.rs

@@ -1266,6 +1266,9 @@ impl SourceMap {
                 Some(ref f) if f.start_pos <= pos && pos < f.end_pos => f,
                 _ => {
                     f = self.lookup_source_file(pos);
+                    if config.skip(&f.name) {
+                        continue;
+                    }
                     src_id = builder.add_source(&config.file_name_to_source(&f.name));
 
                     inline_sources_content = config.inline_sources_content(&f.name);
@@ -1447,8 +1450,9 @@ pub trait SourceMapGenConfig {
         true
     }
 
-    fn skip(&self, _f: &FileName) -> bool {
+    /// By default, we skip internal files.
-        false
+    fn skip(&self, f: &FileName) -> bool {
+        matches!(f, FileName::Internal(..))
     }
 }
 

crates/swc_ecma_transforms_module/src/umd/config.rs

@@ -29,8 +29,10 @@ impl Config {
                 .into_iter()
                 .map(|(k, v)| {
                     let parse = |s| {
-                        let fm = cm
+                        let fm = cm.new_source_file(
-                            .new_source_file(FileName::Custom(format!("<umd-config-{}.js>", s)), s);
+                            FileName::Internal(format!("<umd-config-{}.js>", s)),
+                            s,
+                        );
 
                         parse_file_as_expr(
                             &fm,

crates/swc_ecma_transforms_optimization/src/const_modules.rs

@@ -46,7 +46,10 @@ pub fn const_modules(
 fn parse_option(cm: &SourceMap, name: &str, src: String) -> Arc<Expr> {
     static CACHE: Lazy<DashMap<String, Arc<Expr>, ARandomState>> = Lazy::new(DashMap::default);
 
-    let fm = cm.new_source_file(FileName::Custom(format!("<const-module-{}.js>", name)), src);
+    let fm = cm.new_source_file(
+        FileName::Internal(format!("<const-module-{}.js>", name)),
+        src,
+    );
     if let Some(expr) = CACHE.get(&**fm.src) {
         return expr.clone();
     }

crates/swc_ecma_transforms_react/src/jsx/mod.rs

@@ -118,7 +118,7 @@ pub fn parse_expr_for_jsx(
     src: String,
     top_level_mark: Mark,
 ) -> Arc<Box<Expr>> {
-    let fm = cm.new_source_file(FileName::Custom(format!("<jsx-config-{}.js>", name)), src);
+    let fm = cm.new_source_file(FileName::Internal(format!("<jsx-config-{}.js>", name)), src);
 
     parse_file_as_expr(
         &fm,