Rename copyDirs to copyGlobs in buildCopy, add file path tests

Renames the local variable in buildCopy to copyGlobs to clarify that the
array now contains either directory globs or file paths, not just dirs.

Adds two tests: one asserting existing files are passed through as-is,
and one asserting existing directories still get /** appended.

Author: bcomnes

lib/build-copy/index.js

@@ -48,22 +48,22 @@ export async function buildCopy (_src, dest, _siteData, opts) {
     warnings: [],
   }
 
-  const copyDirs = await getCopyDirs(opts?.copy)
+  const copyGlobs = await getCopyDirs(opts?.copy)
 
-  const copyTasks = copyDirs.map((copyDir) => {
-    return copy(copyDir, dest)
+  const copyTasks = copyGlobs.map((copyGlob) => {
+    return copy(copyGlob, dest)
   })
 
   const settled = await Promise.allSettled(copyTasks)
 
   for (const [index, result] of Object.entries(settled)) {
     // @ts-expect-error
-    const copyDir = copyDirs[index]
+    const copyGlob = copyGlobs[index]
     if (result.status === 'rejected') {
       const buildError = new Error('Error copying copy folders', { cause: result.reason })
       results.errors.push(buildError)
     } else {
-      results.report[copyDir] = result.value
+      results.report[copyGlob] = result.value
     }
   }
   return results

lib/build-copy/index.test.js

@@ -1,5 +1,8 @@
 import { test } from 'node:test'
 import assert from 'node:assert'
+import { mkdtemp, writeFile, rm } from 'node:fs/promises'
+import { join } from 'node:path'
+import os from 'node:os'
 import { getCopyDirs } from './index.js'
 
 test.describe('build-copy', () => {
@@ -8,4 +11,26 @@ test.describe('build-copy', () => {
 
     assert.deepStrictEqual(copyDirs, ['fixtures/**'])
   })
+
+  test('getCopyDirs returns file path as-is for existing files', async () => {
+    const dir = await mkdtemp(join(os.tmpdir(), 'domstack-copy-test-'))
+    const file = join(dir, 'sw.js')
+    try {
+      await writeFile(file, 'self.addEventListener("fetch", () => {})')
+      const result = await getCopyDirs([file])
+      assert.deepStrictEqual(result, [file])
+    } finally {
+      await rm(dir, { recursive: true, force: true })
+    }
+  })
+
+  test('getCopyDirs appends ** for existing directories', async () => {
+    const dir = await mkdtemp(join(os.tmpdir(), 'domstack-copy-test-'))
+    try {
+      const result = await getCopyDirs([dir])
+      assert.deepStrictEqual(result, [join(dir, '**')])
+    } finally {
+      await rm(dir, { recursive: true, force: true })
+    }
+  })
 })