fix(es/module): Don't create absolute paths for jsc.paths on Windows (#7892)

**Related issue:**

 - Closes #7806

Author: kdy1

bindings/Cargo.lock

@@ -51,7 +51,7 @@ tracing-chrome = "0.5.0"
 tracing-futures = "0.2.5"
 tracing-subscriber = { version = "0.3.9", features = ["env-filter"] }
 
-swc_core = { version = "0.81.5", features = [
+swc_core = { version = "0.82.6", features = [
   "allocator_node",
   "ecma_ast",
   "ecma_ast_serde",

bindings/binding_core_node/Cargo.toml

@@ -35,7 +35,7 @@ anyhow = "1.0.66"
 getrandom = { version = "0.2.10", features = ["js"] }
 serde = { version = "1", features = ["derive"] }
 serde-wasm-bindgen = "0.4.5"
-swc_core = { version = "0.81.5", features = [
+swc_core = { version = "0.82.6", features = [
   "ecma_ast_serde",
   "binding_macro_wasm",
   "ecma_transforms",

bindings/binding_core_wasm/Cargo.toml

@@ -30,7 +30,7 @@ relative-path = "1.6.1"
 serde = { version = "1", features = ["derive"] }
 serde_json = { version = "1", features = ["unbounded_depth"] }
 sourcemap = "6.2.2"
-swc_core = { version = "0.81.5", features = [
+swc_core = { version = "0.82.6", features = [
   "trace_macro",
   "common_concurrent",
   "base_concurrent",

bindings/swc_cli/Cargo.toml

@@ -10,7 +10,7 @@ use std::{
     usize,
 };
 
-use anyhow::{bail, Error};
+use anyhow::{bail, Context, Error};
 use dashmap::DashMap;
 use either::Either;
 use indexmap::IndexMap;
@@ -1958,10 +1958,24 @@ fn default_env_name() -> String {
     }
 }
 
-fn build_resolver(base_url: PathBuf, paths: CompiledPaths) -> Box<SwcImportResolver> {
+fn build_resolver(mut base_url: PathBuf, paths: CompiledPaths) -> Box<SwcImportResolver> {
     static CACHE: Lazy<DashMap<(PathBuf, CompiledPaths), SwcImportResolver, ARandomState>> =
         Lazy::new(Default::default);
 
+    // On Windows, we need to normalize path as UNC path.
+    if cfg!(target_os = "windows") {
+        base_url = base_url
+            .canonicalize()
+            .with_context(|| {
+                format!(
+                    "failed to canonicalize jsc.baseUrl(`{}`)\nThis is required on Windows \
+                     because of UNC path.",
+                    base_url.display()
+                )
+            })
+            .unwrap();
+    }
+
     if let Some(cached) = CACHE.get(&(base_url.clone(), paths.clone())) {
         return Box::new((*cached).clone());
     }

crates/swc/src/config/mod.rs

@@ -0,0 +1,26 @@
+{
+    "$schema": "https://json.schemastore.org/swcrc",
+    "module": {
+        "type": "commonjs"
+    },
+    "jsc": {
+        "target": "es2021",
+        "parser": {
+            "syntax": "typescript",
+            "decorators": true,
+            "dynamicImport": true
+        },
+        "transform": {
+            "legacyDecorator": true,
+            "decoratorMetadata": true,
+            "useDefineForClassFields": false
+        },
+        "keepClassNames": true,
+        "baseUrl": ".",
+        "paths": {
+            "@utils/*": [
+                "src/utils/*"
+            ],
+        }
+    },
+}

crates/swc/tests/fixture/issues-7xxx/7806/input/.swcrc

@@ -0,0 +1,3 @@
+import { helloWorld } from "@utils/hello-world.utils.js";
+
+console.log(helloWorld());

crates/swc/tests/fixture/issues-7xxx/7806/input/src/index.ts

@@ -0,0 +1,3 @@
+export function helloWorld() {
+  return "Hello world!";
+}

crates/swc/tests/fixture/issues-7xxx/7806/input/src/utils/hello-world.utils.ts

@@ -0,0 +1,6 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+const _helloworldutils = require("./utils/hello-world.utils.js");
+console.log((0, _helloworldutils.helloWorld)());

crates/swc/tests/fixture/issues-7xxx/7806/output/src/index.ts

@@ -0,0 +1,13 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+Object.defineProperty(exports, "helloWorld", {
+    enumerable: true,
+    get: function() {
+        return helloWorld;
+    }
+});
+function helloWorld() {
+    return "Hello world!";
+}

crates/swc/tests/fixture/issues-7xxx/7806/output/src/utils/hello-world.utils.ts

@@ -0,0 +1,80 @@
+import path from "path";
+import swc from "../../..";
+import { fileURLToPath } from "url";
+
+const __filename = fileURLToPath(import.meta.url);
+
+describe("jsc.paths", () => {
+    it("should work with process.cwd()", async () => {
+        console.log(process.cwd());
+        const f = path.join(
+            __filename,
+            "..",
+            "..",
+            "..",
+            "tests",
+            "swc-path-bug-1",
+            "src",
+            "index.ts"
+        );
+        console.log(f);
+        expect(
+            (
+                await swc.transformFile(f, {
+                    jsc: {
+                        parser: {
+                            syntax: "typescript",
+                        },
+                        baseUrl: process.cwd(),
+                        paths: {
+                            "@utils/*": ["src/utils/*"],
+                        },
+                    },
+                })
+            ).code
+        ).toMatchInlineSnapshot(`
+            "\\"use strict\\";
+            Object.defineProperty(exports, \\"__esModule\\", {
+                value: true
+            });
+            const _helloworldutils = require(\\"src/utils/hello-world.utils.js\\");
+            console.log((0, _helloworldutils.helloWorld)());
+            "
+        `);
+    });
+
+    it("should work with process.cwd() and relative url", async () => {
+        console.log(process.cwd());
+        const f = path.join(
+            "node-swc",
+            "tests",
+            "swc-path-bug-1",
+            "src",
+            "index.ts"
+        );
+        console.log(f);
+        expect(
+            (
+                await swc.transformFile(f, {
+                    jsc: {
+                        parser: {
+                            syntax: "typescript",
+                        },
+                        baseUrl: process.cwd(),
+                        paths: {
+                            "@utils/*": ["src/utils/*"],
+                        },
+                    },
+                })
+            ).code
+        ).toMatchInlineSnapshot(`
+            "\\"use strict\\";
+            Object.defineProperty(exports, \\"__esModule\\", {
+                value: true
+            });
+            const _helloworldutils = require(\\"src/utils/hello-world.utils.js\\");
+            console.log((0, _helloworldutils.helloWorld)());
+            "
+        `);
+    });
+});

node-swc/__tests__/transform/issue_7806_test.mjs

@@ -0,0 +1,20 @@
+{
+  "$schema": "https://json.schemastore.org/swcrc",
+  "module": {"type": "commonjs"},
+  "jsc": {
+    "target": "es2021",
+    "parser": { "syntax": "typescript", "decorators": true, "dynamicImport": true },
+    "transform": {
+    "legacyDecorator": true,
+      "decoratorMetadata": true,
+      "useDefineForClassFields": false
+    },
+    "keepClassNames": true,
+    "baseUrl": "./",
+    "paths": {
+      "@utils/*": [ "src/utils/*" ]
+    }
+  },
+  "minify": false,
+  "sourceMaps": true
+}

node-swc/tests/swc-path-bug-1/.swcrc

@@ -0,0 +1,3 @@
+import { helloWorld } from "@utils/hello-world.utils.js";
+
+console.log(helloWorld());

node-swc/tests/swc-path-bug-1/src/index.ts

@@ -0,0 +1,3 @@
+export function helloWorld() {
+  return "Hello world!";
+}