fix(es/codegen): Fix sourcemap (#3003)

swc_ecma_codegen:
 - Handle source map of multi-line template literals. (Closes #2185, Closes #2362, Closes #2900)

Cargo.lock

@@ -2695,7 +2695,7 @@ dependencies = [
 
 [[package]]
 name = "swc_ecma_codegen"
-version = "0.83.0"
+version = "0.83.1"
 dependencies = [
  "bitflags",
  "memchr",
@@ -3826,7 +3826,7 @@ checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
 
 [[package]]
 name = "wasm"
-version = "1.2.118"
+version = "1.2.119"
 dependencies = [
  "anyhow",
  "console_error_panic_hook",

crates/swc/tests/fixture/sourcemap/004/output/index.map

@@ -1,5 +1,5 @@
 {
-  "mappings": "CEACA,IAAI,CAAC,gBAAkB,GAAIA,IAAI,CAAC,gBAAkB,IAAK,CAAC,CAAC,EAAEC,IAAI,CAAC,CAAC;IAAA,CAAC;QAAA,GAAG;IAAA,CAAC;IAAE,CAAC;QAEhE,IAAI,EACH,QAAQ,CAAEC,CAAuB,EAAEC,CAAmB,EAAEC,CAAmB,EAAE,CAAC;YAE7E,CAAY;gBFJtBC,CAAO,GAAP,QAAA,CAAOC,CAAA,EAAA,CAAA;gBAAM,GAAK,CAAAC,CAAA,GAAAD,CAAA,CAAAC,IAAA;gBAAlB,MAAA,KAAAC,CAAA,CAAAC,GAAA,EAAA,CAAA,MAAA,CAAA;oBACDC,QAAA,EAAAH,CAAA,CAAAI,GAAA;gBAAA,CAAA;YAAA,CAAA;YAIWP,CAAmB,CAACQ,CAAC,CAACT,CAAmB,GAC5BC,CAAmB,CAACS,CAAC,CAACV,CAAmB,EAAE,CAAC;gBAC1C,CAAS,UAAE,QAAQ,GAAI,CAAC;oBAAC,MAAM,CAAeW,CAAO;gBAAE,CAAC;gBACxD,CAAS,UAAE,QAAQ,GAAI,CAAC;oBAAC,MAAM,CAAeT,CAAU;gBAAE,CAAC;YAE1E,CAAC;YACY,GAAG,CAACG,CAA8C,GAAGJ,CAAmB,CAAC,IAAI,GAZzDU,CAAA,IAAA,CAAA;QAE5C,CAAA;QAAA,IAAA,ECDD,QAAA,CAAAZ,CAAA,EAAAa,CAAA,EAAAX,CAAA,EAAA,CAAA;aAGAY,MAAe,CAAAC,QAAA,GAAAD,MAAQ,CAAAC,QAA8B,IAAA,CAAA,CAAA,EAAAhB,IAAA,CAAA,CAAA;gBACrD,CAAA;gBACA,QAAA,GAAA,CAAA;oBAKK,MAAA,CAAAG,CAAA,CAAA,IAAA;gBACL,CAAA;YAAA,CAAA;QAAA,CAAA;IAAA,CAAA;IAAA,QAAA,CAAAA,CAAA,EAAA,CAAA;QAAAA,CAAA,CAAAc,CAAA,CAAA,CAAA,EAAA,CAAA;YAAA,GAAA;YAAA,GAAA;YAAA,GAAA;QAAA,CAAA,EAAA,QAAA,GAAA,CAAA;YAAA,MAAA,CAAAd,CAAA,CAAAA,CAAA,CAAAe,CAAA,GAAA,IAAA;QAAA,CAAA,GAAAC,IAAA,GAAAhB,CAAA,CAAAc,CAAA;IAAA,CAAA;AAAA,CAAA",
+  "mappings": "CEACA,IAAI,CAAC,gBAAkB,GAAIA,IAAI,CAAC,gBAAkB,IAAK,CAAC,CAAC,EAAEC,IAAI,CAAC,CAAC;IAAA,CAAC;AAAA,WAAG;IAAA,CAAC;IAAE,CAAC;AAEhE,YAAI,EACH,QAAQ,CAAEC,CAAuB,EAAEC,CAAmB,EAAEC,CAAmB,EAAE,CAAC;YAE7E,CAAY;gBFJtBC,CAAO,GAAP,QAAA,CAAOC,CAAA,EAAA,CAAA;gBAAM,GAAK,CAAAC,CAAA,GAAAD,CAAA,CAAAC,IAAA;gBAAlB,MAAA,KAAAC,CAAA,CAAAC,GAAA,EAAA,CAAA,MAAA,CAAA;oBACDC,QAAA,EAAAH,CAAA,CAAAI,GAAA;gBAAA,CAAA;YAAA,CAAA;YAIWP,CAAmB,CAACQ,CAAC,CAACT,CAAmB,GAC5BC,CAAmB,CAACS,CAAC,CAACV,CAAmB,EAAE,CAAC;gBAC1C,CAAS,UAAE,QAAQ,GAAI,CAAC;oBAAC,MAAM,CAAeW,CAAO;gBAAE,CAAC;gBACxD,CAAS,UAAE,QAAQ,GAAI,CAAC;oBAAC,MAAM,CAAeT,CAAU;gBAAE,CAAC;YAE1E,CAAC;YACY,GAAG,CAACG,CAA8C,GAAGJ,CAAmB,CAAC,IAAI,GAZzDU,CAAA,IAAA,CAAA;QAE5C,CAAA;AAAA,YAAA,ECDD,QAAA,CAAAZ,CAAA,EAAAa,CAAA,EAAAX,CAAA,EAAA,CAAA;aAGAY,MAAe,CAAAC,QAAA,GAAAD,MAAQ,CAAAC,QAA8B,IAAA,CAAA,CAAA,EAAAhB,IAAA,CAAA,CAAA;gBACrD,CAAA;gBACA,QAAA,GAAA,CAAA;oBAKK,MAAA,CAAAG,CAAA,CAAA,IAAA;gBACL,CAAA;YAAA,CAAA;QAAA,CAAA;IAAA,CAAA;IAAA,QAAA,CAAAA,CAAA,EAAA,CAAA;QAAAA,CAAA,CAAAc,CAAA,CAAA,CAAA,EAAA,CAAA;AAAA,eAAA;AAAA,eAAA;AAAA,eAAA;QAAA,CAAA,EAAA,QAAA,GAAA,CAAA;YAAA,MAAA,CAAAd,CAAA,CAAAA,CAAA,CAAAe,CAAA,GAAA,IAAA;QAAA,CAAA,GAAAC,IAAA,GAAAhB,CAAA,CAAAc,CAAA;IAAA,CAAA;AAAA,CAAA",
   "names": [
     "self",
     "push",

crates/swc/tests/fixture/sourcemap/issue-2185/input/.swcrc

@@ -0,0 +1,6 @@
+{
+  "sourceMaps": true,
+  "jsc": {
+    "target": "es2015"
+  }
+}

crates/swc/tests/fixture/sourcemap/issue-2185/input/index.js

@@ -0,0 +1,17 @@
+describe("foo", () => {
+    it("test1", () => {
+        expect(false).toBe(true);
+    });
+
+    it("test2", () => {
+        const str = `
+        bar
+      `;
+
+        expect(false).toBe(true);
+    });
+
+    it("test3", () => {
+        expect(false).toBe(true);
+    });
+});

crates/swc/tests/fixture/sourcemap/issue-2185/output/index.js

@@ -0,0 +1,14 @@
+describe("foo", ()=>{
+    it("test1", ()=>{
+        expect(false).toBe(true);
+    });
+    it("test2", ()=>{
+        const str = `
+        bar
+      `;
+        expect(false).toBe(true);
+    });
+    it("test3", ()=>{
+        expect(false).toBe(true);
+    });
+});

crates/swc/tests/fixture/sourcemap/issue-2185/output/index.map

@@ -0,0 +1,17 @@
+{
+  "mappings": "AAAAA,QAAQ,CAAC,CAAK,UAAQ,CAAC;IACnBC,EAAE,CAAC,CAAO,YAAQ,CAAC;QACfC,MAAM,CAAC,KAAK,EAAEC,IAAI,CAAC,IAAI;IAC3B,CAAC;IAEDF,EAAE,CAAC,CAAO,YAAQ,CAAC;QACf,KAAK,CAACG,GAAG,IAAI;;MAEf;QAEEF,MAAM,CAAC,KAAK,EAAEC,IAAI,CAAC,IAAI;IAC3B,CAAC;IAEDF,EAAE,CAAC,CAAO,YAAQ,CAAC;QACfC,MAAM,CAAC,KAAK,EAAEC,IAAI,CAAC,IAAI;IAC3B,CAAC;AACL,CAAC",
+  "names": [
+    "describe",
+    "it",
+    "expect",
+    "toBe",
+    "str"
+  ],
+  "sources": [
+    "../../input/index.js"
+  ],
+  "sourcesContent": [
+    "describe(\"foo\", () => {\n    it(\"test1\", () => {\n        expect(false).toBe(true);\n    });\n\n    it(\"test2\", () => {\n        const str = `\n        bar\n      `;\n\n        expect(false).toBe(true);\n    });\n\n    it(\"test3\", () => {\n        expect(false).toBe(true);\n    });\n});"
+  ],
+  "version": 3
+}

crates/swc_ecma_codegen/Cargo.toml

@@ -7,7 +7,7 @@ include = ["Cargo.toml", "src/**/*.rs"]
 license = "Apache-2.0"
 name = "swc_ecma_codegen"
 repository = "https://github.com/swc-project/swc.git"
-version = "0.83.0"
+version = "0.83.1"
 
 [dependencies]
 bitflags = "1"

crates/swc_ecma_codegen/src/text_writer/basic_impl.rs

@@ -188,7 +188,24 @@ impl<'a, W: Write> WriteJs for JsWriter<'a, W> {
     }
 
     fn write_str_lit(&mut self, span: Span, s: &str) -> Result {
-        self.write(Some(span), s)?;
+        if !s.is_empty() {
+            if !span.is_dummy() {
+                self.srcmap(span.lo())
+            }
+
+            self.write(None, s)?;
+
+            let line_start_of_s = compute_line_starts(s);
+            if line_start_of_s.len() > 1 {
+                self.line_count = self.line_count + line_start_of_s.len() - 1;
+                self.line_pos = s.len() - line_start_of_s.last().cloned().unwrap_or(0);
+            }
+
+            if !span.is_dummy() {
+                self.srcmap(span.hi())
+            }
+        }
+
         Ok(())
     }
 

crates/wasm/Cargo.toml

@@ -6,7 +6,7 @@ license = "Apache-2.0"
 name = "wasm"
 publish = false
 repository = "https://github.com/swc-project/swc.git"
-version = "1.2.118"
+version = "1.2.119"
 
 [lib]
 crate-type = ["cdylib"]

package.json

@@ -1,6 +1,6 @@
 {
     "name": "@swc/core",
-    "version": "1.2.118",
+    "version": "1.2.119",
     "description": "Super-fast alternative for babel",
     "homepage": "https://swc.rs",
     "main": "./index.js",