fix: esm module resolve issues

.changeset/spotty-mails-relate.md

@@ -0,0 +1,6 @@
+---
+'@fake-scope/fake-pkg': patch
+---
+
+fix: convert fileUrl to path before compile, close #753
+fix: remove baseUrl from esm to keep module import specifier, cause it use tsc resolver.

package.json

@@ -31,7 +31,7 @@
     "lint": "eslint -c ./.eslintrc.yml .",
     "test": "ava",
     "test:jest": "jest --config jest.config.js",
-    "test:module": "cross-env SWC_NODE_PROJECT=packages/integrate-module/tsconfig.json node --loader=@swc-node/register/esm packages/integrate-module/src/index.ts",
+    "test:module": "cross-env SWC_NODE_PROJECT=packages/integrate-module/tsconfig.json node --import=@swc-node/register/esm-register packages/integrate-module/src/index.ts",
     "version": "pnpm install && git add .",
     "postinstall": "husky install"
   },

packages/register/__test__/ts-compiler-options-to-swc-config.spec.ts

@@ -10,7 +10,7 @@ test('default values', (t) => {
   const filename = 'some-file.tsx'
   const swcConfig = tsCompilerOptionsToSwcConfig(options, filename)
   const expected = {
-    baseUrl: process.cwd(),
+    baseUrl: undefined,
     module: 'es6',
     sourcemap: false,
     experimentalDecorators: false,

packages/register/esm.mts

@@ -90,11 +90,17 @@ interface LoadResult {
 type LoadArgs = [url: string, context: LoadContext, nextLoad?: (...args: LoadArgs) => Promise<LoadResult>]
 type LoadFn = (...args: Required<LoadArgs>) => Promise<LoadResult>
 
+const tsconfigForSWCNode = {
+  ...tsconfig,
+  paths: undefined,
+  baseUrl: undefined,
+}
+
 export const load: LoadFn = async (url, context, nextLoad) => {
   if (context.format === 'ts') {
     const { source } = await nextLoad(url, context)
     const code = typeof source === 'string' ? source : Buffer.from(source).toString()
-    const compiled = await compile(code, url, tsconfig, true)
+    const compiled = await compile(code, fileURLToPath(url), tsconfigForSWCNode, true)
     return {
       format: 'module',
       source: compiled,

packages/register/read-default-tsconfig.ts

@@ -130,7 +130,7 @@ export function tsCompilerOptionsToSwcConfig(options: ts.CompilerOptions, filena
             useBuiltins: true,
           }
         : undefined,
-    baseUrl: resolve(options.baseUrl ?? './'),
+    baseUrl: options.baseUrl ? resolve(options.baseUrl) : undefined,
     paths: Object.fromEntries(
       Object.entries(options.paths ?? {}).map(([aliasKey, aliasPaths]) => [
         aliasKey,