test: add sourcemap spec

- Close #681

packages/integrate/__tests__/sourcemaps/__snapshots__/sourcemaps.spec.ts.md

@@ -0,0 +1,20 @@
+# Snapshot report for `packages/integrate/__tests__/sourcemaps/sourcemaps.spec.ts`
+
+The actual snapshot is saved in `sourcemaps.spec.ts.snap`.
+
+Generated by [AVA](https://avajs.dev).
+
+## should work with sourcemaps
+
+> Snapshot 1
+
+    `Error: ␊
+        at /Users/longyinan/workspace/github/swc-node/packages/integrate/__tests__/sourcemaps/sourcemaps.spec.ts:23:14␊
+        at Test.callFn (file:///Users/longyinan/workspace/github/swc-node/node_modules/.pnpm/ava@5.2.0/node_modules/ava/lib/test.js:507:21)␊
+        at Test.run (file:///Users/longyinan/workspace/github/swc-node/node_modules/.pnpm/ava@5.2.0/node_modules/ava/lib/test.js:520:23)␊
+        at Runner.runSingle (file:///Users/longyinan/workspace/github/swc-node/node_modules/.pnpm/ava@5.2.0/node_modules/ava/lib/runner.js:285:33)␊
+        at Runner.runTest (file:///Users/longyinan/workspace/github/swc-node/node_modules/.pnpm/ava@5.2.0/node_modules/ava/lib/runner.js:367:30)␊
+        at processTicksAndRejections (node:internal/process/task_queues:96:5)␊
+        at async Promise.all (index 0)␊
+        at file:///Users/longyinan/workspace/github/swc-node/node_modules/.pnpm/ava@5.2.0/node_modules/ava/lib/runner.js:532:21␊
+        at Runner.start (file:///Users/longyinan/workspace/github/swc-node/node_modules/.pnpm/ava@5.2.0/node_modules/ava/lib/runner.js:540:15)`

packages/integrate/__tests__/sourcemaps/sourcemaps.spec.ts

@@ -0,0 +1,24 @@
+import test from 'ava'
+
+// @ts-expect-error
+interface _Unused1 {}
+// @ts-expect-error
+interface _Unused2 {}
+// @ts-expect-error
+interface _Unused3 {}
+// @ts-expect-error
+interface _Unused4 {}
+// @ts-expect-error
+interface _Unused5 {}
+// @ts-expect-error
+interface _Unused6 {}
+// @ts-expect-error
+interface _Unused7 {}
+// @ts-expect-error
+interface _Unused8 {}
+// @ts-expect-error
+interface _Unused9 {}
+
+test('should work with sourcemaps', (t) => {
+  t.snapshot(new Error().stack)
+})

packages/register/read-default-tsconfig.ts

@@ -97,26 +97,18 @@ function toModule(moduleKind: ts.ModuleKind) {
   }
 }
 
-export function createSourcemapOption(options: ts.CompilerOptions) {
-  return options.sourceMap !== false
-    ? options.inlineSourceMap
-      ? 'inline'
-      : true
-    : options.inlineSourceMap
-    ? 'inline'
-    : false
-}
-
 export function tsCompilerOptionsToSwcConfig(options: ts.CompilerOptions, filename: string): Options {
   const isJsx = filename.endsWith('.tsx') || filename.endsWith('.jsx') || Boolean(options.jsx)
   return {
     module: toModule(options.module ?? ts.ModuleKind.ES2015),
-    sourcemap: createSourcemapOption(options),
+    sourcemap: Boolean(options.sourceMap),
     experimentalDecorators: options.experimentalDecorators ?? false,
     emitDecoratorMetadata: options.emitDecoratorMetadata ?? false,
     esModuleInterop: options.esModuleInterop ?? false,
     swc: {
       filename,
+      inputSourceMap: options.inlineSourceMap,
+      sourceRoot: options.sourceRoot,
       jsc: {
         externalHelpers: Boolean(options.importHelpers),
         parser: {