fix: fix experimentalDts file cleaning and watching (#1199)

Author: boqingren

src/api-extractor.ts

@@ -136,9 +136,9 @@ async function rollupDtsFiles(
  }
 }
 
-function cleanDtsFiles(options: NormalizedOptions) {
+async function cleanDtsFiles(options: NormalizedOptions) {
  if (options.clean) {
- removeFiles(['**/*.d.{ts,mts,cts}'], options.outDir)
+ await removeFiles(['**/*.d.{ts,mts,cts}'], options.outDir)
  }
 }
 
@@ -156,7 +156,7 @@ export async function runDtsRollup(
  if (!exports) {
  throw new Error('Unexpected internal error: dts exports is not define')
  }
- cleanDtsFiles(options)
+ await cleanDtsFiles(options)
  for (const format of options.format) {
  await rollupDtsFiles(options, exports, format)
  }

src/index.ts

@@ -207,17 +207,21 @@ export async function build(_options: Options) {
  logger.info('CLI', 'Running in watch mode')
  }
 
+ const experimentalDtsTask = async () => {
+ if (!options.dts && options.experimentalDts) {
+ const exports = runTypeScriptCompiler(options);
+ await runDtsRollup(options, exports);
+ }
+ }
+
  const dtsTask = async () => {
  if (options.dts && options.experimentalDts) {
  throw new Error(
  "You can't use both `dts` and `experimentalDts` at the same time",
  )
  }
 
- if (options.experimentalDts) {
- const exports = runTypeScriptCompiler(options)
- await runDtsRollup(options, exports)
- }
+ experimentalDtsTask();
 
  if (options.dts) {
  await new Promise<void>((resolve, reject) => {
@@ -351,6 +355,8 @@ export async function build(_options: Options) {
  }),
  ])
 
+ experimentalDtsTask()
+ 
  if (options.onSuccess) {
  if (typeof options.onSuccess === 'function') {
  onSuccessCleanup = await options.onSuccess()