refactor: make CLI async

cli.js

@@ -1,11 +1,11 @@
 #!/usr/bin/env node
-import { globbySync } from 'globby'
-import fs from 'node:fs'
+import { globbyStream } from 'globby'
+import fs from 'node:fs/promises'
 import sortPackageJson from './index.js'
 
-function showVersion() {
+async function showVersion() {
  const { name, version } = JSON.parse(
- fs.readFileSync(new URL('package.json', import.meta.url)),
+ await fs.readFile(new URL('package.json', import.meta.url)),
  )
 
  console.log(`${name} ${version}`)
@@ -26,49 +26,53 @@ If file/glob is omitted, './package.json' file will be processed.
  )
 }
 
-function sortPackageJsonFiles(patterns, { isCheck, shouldBeQuit }) {
- const files = globbySync(patterns)
+async function sortPackageJsonFiles(patterns, { isCheck, shouldBeQuit }) {
  const printToStdout = shouldBeQuit ? () => {} : console.log
 
- if (files.length === 0) {
- console.error('No matching files.')
- process.exitCode = 2
- return
- }
-
  let notSortedFiles = 0
- for (const file of files) {
- const packageJson = fs.readFileSync(file, 'utf8')
+ let matchedFiles = 0
+ for await (const file of globbyStream(patterns)) {
+ matchedFiles++
+
+ const packageJson = await fs.readFile(file, 'utf8')
  const sorted = sortPackageJson(packageJson)
 
- if (sorted !== packageJson) {
- if (isCheck) {
- notSortedFiles++
- printToStdout(file)
- process.exitCode = 1
- } else {
- fs.writeFileSync(file, sorted)
+ if (sorted === packageJson) {
+ continue
+ }
+
+ notSortedFiles++
 
- printToStdout(`${file} is sorted!`)
- }
+ if (isCheck) {
+ printToStdout(file)
+ process.exitCode = 1
+ } else {
+ await fs.writeFile(file, sorted)
+ printToStdout(`${file} is sorted!`)
  }
  }
 
+ if (matchedFiles === 0) {
+ console.error('No matching files.')
+ process.exitCode = 2
+ return
+ }
+
  if (isCheck) {
  // Print a empty line
  printToStdout()
 
  if (notSortedFiles) {
  printToStdout(
  notSortedFiles === 1
- ? `${notSortedFiles} of ${files.length} matched file is not sorted.`
- : `${notSortedFiles} of ${files.length} matched files are not sorted.`,
+ ? `${notSortedFiles} of ${matchedFiles} matched file is not sorted.`
+ : `${notSortedFiles} of ${matchedFiles} matched files are not sorted.`,
  )
  } else {
  printToStdout(
- files.length === 1
- ? `${files.length} matched file is sorted.`
- : `${files.length} matched files are sorted.`,
+ matchedFiles === 1
+ ? `${matchedFiles} matched file is sorted.`
+ : `${matchedFiles} matched files are sorted.`,
  )
  }
  }
@@ -109,7 +113,7 @@ function run() {
  patterns[0] = 'package.json'
  }
 
- sortPackageJsonFiles(patterns, { isCheck, shouldBeQuit })
+ return sortPackageJsonFiles(patterns, { isCheck, shouldBeQuit })
 }
 
-run()
+await run()