fix(cli): Compile newly created files in watch mode (#114)

Currently in watch mode, the CLI will only watch files that existed at
the time the command was started. This means newly added files won't
trigger a rebuild.

Fixing by moving the globbing logic into the `ignored` callback instead
& watching the sources in their entirety. This should address
https://github.com/swc-project/swc/issues/10520

Author: mwolting

.changeset/little-spoons-jog.md

@@ -0,0 +1,5 @@
+---
+"@swc/cli": patch
+---
+
+fix(cli): Include newly added files in watch mode

packages/cli/src/swc/sources.ts

@@ -114,16 +114,17 @@ export async function watchSources(
     ignore: string[] = []
 ) {
     const chokidar = await requireChokidar();
-    const sourceFiles = await globSources(
-        sources,
-        only,
-        ignore,
-        includeDotfiles
-    );
-    return chokidar.watch(sourceFiles, {
-        ignored: includeDotfiles
-            ? undefined
-            : (filename: string) => basename(filename).startsWith("."),
+    return chokidar.watch(sources, {
+        ignored: (filename: string) => {
+            if (!includeDotfiles && basename(filename).startsWith(".")) {
+                return true;
+            }
+            if (ignore.some(ignore => minimatch(slash(filename), ignore))) {
+                return true;
+            }
+
+            return only.length > 0 && !only.some(only => minimatch(slash(filename), only));
+        },
         ignoreInitial: true,
         awaitWriteFinish: {
             stabilityThreshold: 50,