feat!: check for unused dependencies by default (#1177)

To make the dependency check more thorough, check for unused deps by default.

---------

Co-authored-by: Alex Potsides <[email protected]>

Author: mpetrunic

package.json

@@ -212,7 +212,7 @@
     "lint": "node src/index.js lint",
     "test": "node src/index.js test",
     "docs": "node src/index.js docs",
-    "dep-check": "node src/index.js dep-check",
+    "dep-check": "node src/index.js dep-check --unused false",
     "doc-check": "node src/index.js doc-check",
     "test:node": "node src/index.js test -t node --cov",
     "test:chrome": "node src/index.js test -t browser --cov",

src/cmds/dependency-check.js

@@ -36,7 +36,7 @@ export default {
       .option('u', {
         alias: 'unused',
         describe: 'Checks for unused dependencies',
-        default: false,
+        default: true,
         type: 'boolean'
       })
   },

src/config/user.js

@@ -112,10 +112,7 @@ const defaults = {
   // dependency check cmd options
   dependencyCheck: {
     unused: false,
-    ignore: [
-      '@types/*',
-      'aegir'
-    ]
+    ignore: []
   },
   exec: {
     bail: true

src/dependency-check.js

@@ -2,6 +2,17 @@ import Listr from 'listr'
 import depcheck from 'depcheck'
 import { cwd } from 'process'
 
+const ignoredDevDependencies = [
+  '@types/*',
+  'aegir',
+  'mkdirp',
+  'rimraf',
+  'protons',
+  'eslint*',
+  '@types/*',
+  '@semantic-release/*'
+]
+
 /**
  * @typedef {import("listr").ListrTaskWrapper} Task
  * @typedef {import("./types").GlobalOptions} GlobalOptions
@@ -24,7 +35,7 @@ const tasks = new Listr(
             '**/*.cjs': depcheck.parser.es6,
             '**/*.mjs': depcheck.parser.es6
           },
-          ignoreMatches: ['eslint*', '@types/*', '@semantic-release/*'].concat(ctx.fileConfig.dependencyCheck.ignore).concat(ctx.ignore)
+          ignoreMatches: ignoredDevDependencies.concat(ctx.fileConfig.dependencyCheck.ignore).concat(ctx.ignore)
         })
         if (Object.keys(result.missing).length > 0 || (ctx.unused && (result.dependencies.length > 0 || result.devDependencies.length > 0))) {
           throw new Error(

test/dependency-check.js

@@ -13,15 +13,15 @@ const bin = require.resolve('../src/index.js')
 describe('dependency check', () => {
   it('should fail for missing deps', async () => {
     await expect(
-      execa(bin, ['dependency-check'], {
+      execa(bin, ['dependency-check', '-u', 'false'], {
         cwd: path.join(__dirname, 'fixtures/dependency-check/fail')
       })
     ).to.eventually.be.rejectedWith('execa')
   })
 
   it('should fail for missing deps in an esm project', async () => {
     await expect(
-      execa(bin, ['dependency-check'], {
+      execa(bin, ['dependency-check', '-u', 'false'], {
         cwd: path.join(__dirname, 'fixtures/dependency-check/esm-fail')
       })
     ).to.eventually.be.rejected()
@@ -32,7 +32,7 @@ describe('dependency check', () => {
 
   it('should fail for missing deps in an ts project', async () => {
     await expect(
-      execa(bin, ['dependency-check'], {
+      execa(bin, ['dependency-check', '-u', 'false'], {
         cwd: path.join(__dirname, 'fixtures/dependency-check/ts-fail')
       })
     ).to.eventually.be.rejected()
@@ -43,31 +43,31 @@ describe('dependency check', () => {
 
   it('should pass when there are no missing deps', async () => {
     await expect(
-      execa(bin, ['dependency-check'], {
+      execa(bin, ['dependency-check', '-u', 'false'], {
         cwd: path.join(__dirname, 'fixtures/dependency-check/pass')
       })
     ).to.eventually.be.fulfilled()
   })
 
   it('should pass when there are no missing deps in an esm project', async () => {
     await expect(
-      execa(bin, ['dependency-check'], {
+      execa(bin, ['dependency-check', '-u', 'false'], {
         cwd: path.join(__dirname, 'fixtures/dependency-check/esm-pass')
       })
     ).to.eventually.be.fulfilled()
   })
 
   it('should pass when there are no missing deps in an ts project', async () => {
     await expect(
-      execa(bin, ['dependency-check'], {
+      execa(bin, ['dependency-check', '-u', 'false'], {
         cwd: path.join(__dirname, 'fixtures/dependency-check/ts-pass')
       })
     ).to.eventually.be.fulfilled()
   })
 
   it('should check unused', async () => {
     await expect(
-      execa(bin, ['dependency-check', '--unused'], {
+      execa(bin, ['dependency-check'], {
         cwd: path.join(__dirname, 'fixtures/dependency-check/pass')
       })
     ).to.eventually.be.rejected.with.property('message').that.include(
@@ -131,7 +131,7 @@ describe('dependency check', () => {
 
   it('should pass for modules used in .aegir.js', async () => {
     await expect(
-      execa(bin, ['dependency-check', '--unused'], {
+      execa(bin, ['dependency-check', '-u', 'false'], {
         cwd: path.join(
           __dirname,
           'fixtures/dependency-check/with-aegir-config'