ci: Add depcheck test

.depcheckrc.yml

@@ -0,0 +1,86 @@
+# List things here that *are - 'used, that depcheck is wrong about'
+ignores:
+
+  # Note: Everything below this line should be removed after investigation
+  # TODO: Investigate each dependency to see whether it's used
+
+  ## Unused dependencies to investigate
+  - '@babel/preset-env'
+  - '@babel/runtime'
+  - '@cucumber/message-streams'
+  - '@cucumber/messages'
+  - '@metamask/mobile-provider'
+  - '@rpii/wdio-html-reporter'
+  - '@testing-library/react'
+  - '@testing-library/react-hooks'
+  - '@types/jest'
+  - '@types/react-native-video'
+  - '@wdio/appium-service'
+  - '@wdio/browserstack-service'
+  - '@wdio/junit-reporter'
+  - '@wdio/local-runner'
+  - '@wdio/spec-reporter'
+  - 'appium'
+  - 'assert'
+  - 'babel-core'
+  - 'babel-loader'
+  - 'chromedriver'
+  - 'eslint-config-prettier'
+  - 'eslint-plugin-prettier'
+  - 'eslint-plugin-react-native'
+  - 'execa'
+  - 'fbjs-scripts'
+  - 'improved-yarn-audit'
+  - 'jetifier'
+  - 'metro'
+  - 'metro-react-native-babel-preset'
+  - 'octonode'
+  - 'oss-attribution-generator'
+  - 'prettier-plugin-gherkin'
+  - 'react-native-svg-asset-plugin'
+  - 'regenerator-runtime'
+  - 'rn-nodeify'
+
+  ## Unused devDependencies to investigate
+  - '@ethersproject/abi'
+  - '@metamask/swappable-obj-proxy'
+  - '@react-native-picker/picker'
+  - '@rnhooks/keyboard'
+  - '@segment/sovran-react-native'
+  - '@tradle/react-native-http'
+  - 'asyncstorage-down'
+  - 'buffer'
+  - 'd3-shape'
+  - 'dnode'
+  - 'eciesjs'
+  - 'eth-block-tracker'
+  - 'eth-json-rpc-infura'
+  - 'events'
+  - 'https-browserify'
+  - 'obs-store'
+  - 'path'
+  - 'pbkdf2'
+  - 'pify'
+  - 'punycode'
+  - 'randomfill'
+  - 'react-native-aes-crypto'
+  - 'react-native-aes-crypto-forked'
+  - 'react-native-crypto'
+  - 'react-native-flash-message'
+  - 'react-native-level-fs'
+  - 'react-native-os'
+  - 'react-native-randombytes'
+  - 'react-native-redash'
+  - 'react-native-swipe-gestures'
+  - 'react-native-tcp'
+  - 'react-native-v8'
+  - 'socket.io-client'
+  - 'stream-browserify'
+  - 'url'
+  - 'vm-browserify'
+
+  ## Missing dependencies to investigate
+  - '@react-navigation/core'
+  - 'app'
+  - 'i18n-js'
+  - 'images'

.github/workflows/ci.yml

@@ -41,6 +41,7 @@ jobs:
           - lint
           - lint:tsc
           - audit:ci
+          - test:depcheck
           - test:tgz-check
     steps:
       - uses: actions/checkout@v3

package.json

@@ -64,6 +64,7 @@
     "test:wdio:android": "yarn wdio ./wdio/config/android.config.debug.js",
     "test:wdio:android:browserstack": "yarn wdio ./wdio/config/android.config.browserstack.js",
     "test:wdio:android:browserstack:local": "yarn wdio ./wdio/config/android.config.browserstack.local.js",
+    "test:depcheck": "yarn depcheck",
     "test:tgz-check": "./scripts/tgz-check.sh",
     "test:attribution-check": "./scripts/attributions-check.sh",
     "test:merge-coverage": "nyc merge ./tests/coverage ./tests/merged-coverage/coverage.json",
@@ -408,6 +409,7 @@
     "babel-plugin-transform-remove-console": "6.9.4",
     "browserstack-local": "^1.5.1",
     "chromedriver": "^99.0.0",
+    "depcheck": "^1.4.5",
     "detox": "^20.11.0",
     "dotenv": "^16.0.3",
     "enzyme": "3.9.0",