Code quality

- Function `convertFile` has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.
in zh-converter.js:16
- Don't use process.exit(); throw an error instead.
in index.js:18
- Redundant double negation.
in index.js:21

.gitignore

@@ -3,4 +3,176 @@ node_modules/
 # coverage folder
 coverage/
 # gitlab public folder
-public/
+public/
+
+test/*.xml
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+out
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
+
+# Windows thumbnail cache files
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+
+# Dump file
+*.stackdump
+
+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk

index.js

@@ -15,10 +15,10 @@ program
 
 if (!process.argv.slice(2).length) {
   program.outputHelp();
-  process.exit();
+  throw new Error('argument is empty');
 }
 
-let toTraditional = !!!program.simplified;
+let toTraditional = !program.simplified;
 let filterExtname = '' || program.extname;
 
 if (toTraditional) {

zh-converter.js

@@ -5,27 +5,32 @@ const chineseConv = require('chinese-conv');
 exports.run = (process, toTraditional = true, filterExtname = '') => {
   fs.readdir(process.cwd(), (err, data) => {
     data.filter((file) => {
-      if (filterExtname === '' || filterExtname === '*') return true;
-      return path.extname(file) === filterExtname;
-    }).map(async (file) => {
-      await this.convertFile(file, toTraditional);
+      return filterExtname === '' || filterExtname === '*'
+        ? true
+        : path.extname(file) === filterExtname;
+    }).map(file => {
+      this.convertFile(file, toTraditional);
     });
   });
 }
 
 exports.convertFile = async (file, toTraditional, callback) => {
-  fs.readFile(file, 'utf-8', async (err, data) => {
+  fs.readFile(file, 'utf-8', (err, data) => {
     try {
-      await fs.writeFile(
-        file,
-        toTraditional ? chineseConv.tify(data) : chineseConv.sify(data),
-        () => {
-          console.log(`%s ${file} be converted! success.`, "\x1b[37m");
-        });
+      doConvert(file, toTraditional, data);
     } catch (error) {
       console.log(`%s ${file} be converted fail !`, "\x1b[31m");
       if (callback)
         callback(`${file} be converted fail !`);
     }
   });
 }
+
+function doConvert(file, toTraditional, data) {
+  fs.writeFile(
+    file,
+    toTraditional ? chineseConv.tify(data) : chineseConv.sify(data),
+    () => {
+      console.log(`%s ${file} be converted! success.`, "\x1b[37m");
+    });
+}