feat(core): expose inline and both config for sourcemap

packages/core/index.ts

@@ -3,12 +3,13 @@ import {
   transformSync as swcTransformSync,
   Options as SwcOptions,
   ReactConfig,
+  Config,
 } from '@swc/core'
 
 export interface Options {
   target?: 'es3' | 'es5' | 'es2015' | 'es2016' | 'es2017' | 'es2018' | 'es2019'
   module?: 'commonjs' | 'umd' | 'amd' | 'es6'
-  sourcemap?: boolean | 'inline'
+  sourcemap?: Config['sourceMaps']
   jsx?: boolean
   experimentalDecorators?: boolean
   emitDecoratorMetadata?: boolean

packages/register/__test__/create-sourcemap-option.spec.ts

@@ -0,0 +1,20 @@
+import { Config } from '@swc/core'
+import test from 'ava'
+import { CompilerOptions } from 'typescript'
+
+import { createSourcemapOption } from '../register'
+
+const FIXTURES: [CompilerOptions, Config['sourceMaps']][] = [
+  [{ sourceMap: true, inlineSourceMap: true }, 'both'],
+  [{ sourceMap: false, inlineSourceMap: true }, 'inline'],
+  [{ sourceMap: true, inlineSourceMap: false }, true],
+  [{ sourceMap: false, inlineSourceMap: false }, false],
+  [{ inlineSourceMap: true }, 'both'],
+  [{ inlineSourceMap: false }, true],
+]
+
+for (const [config, expect] of FIXTURES) {
+  test(`should create ${expect} from ${JSON.stringify(config)}`, (t) => {
+    t.is(createSourcemapOption(config), expect)
+  })
+}

packages/register/register.ts

@@ -86,7 +86,7 @@ function compile(
     const { code, map } = transformSync(sourcecode, filename, {
       target: toTsTarget(options.target ?? ts.ScriptTarget.ES2018),
       module: toModule(options.module ?? ts.ModuleKind.ES2015),
-      sourcemap: options.sourceMap !== false,
+      sourcemap: createSourcemapOption(options),
       jsx: filename.endsWith('.tsx') || filename.endsWith('.jsx') || Boolean(options.jsx),
       react:
         options.jsxFactory || options.jsxFragmentFactory
@@ -115,3 +115,14 @@ export function register(options = readDefaultTsConfig()) {
     exts: DEFAULT_EXTENSIONS,
   })
 }
+
+// @internal
+export function createSourcemapOption(options: ts.CompilerOptions) {
+  return options.sourceMap !== false
+    ? options.inlineSourceMap
+      ? 'both'
+      : true
+    : options.inlineSourceMap
+    ? 'inline'
+    : false
+}