🎉 Init

.circleci/config.yml

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+version: 2
+jobs:
+  build:
+    docker:
+      - image: circleci/node:10.11.0
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - v1-dependencies-{{ checksum "package.json" }}
+      - run: yarn install
+      - save_cache:
+          paths:
+            - node_modules
+          key: v1-dependencies-{{ checksum "package.json" }}
+      - run: yarn lint
+      - run: yarn pretty-check
+      - run: yarn test

.eslintignore

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+node_modules

.eslintrc

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+{
+  "extends": ["airbnb-base"],
+  "parserOptions": {
+    "ecmaVersion": 9
+  },
+  "env": {
+    "jest": true,
+    "node": true
+  },
+  "rules": {
+    "no-underscore-dangle": 0,
+    "no-use-before-define": [
+      "error",
+      { "functions": false, "classes": true, "variables": true }
+    ]
+  }
+}

.gitignore

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+node_modules
+.npmrc

.npmignore

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+node_modules
+__tests__
+.circleci
+.git
+examples
+.eslintignore
+.eslintrc
+.gitignore
+.prettierignore
+.prettierrc

.prettierignore

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+node_modules

.prettierrc

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+{
+  "singleQuote": true,
+  "trailingComma": "all"
+}

README.md

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+# Remnants [![CircleCI](https://circleci.com/gh/MatthieuLemoine/remnants/tree/master.svg?style=svg)](https://circleci.com/gh/MatthieuLemoine/remnants/tree/master)
+
+Find unused files. Spot these residues, leftovers, relics of an ancient past.
+
+And :fire: them. Death to legacy & dead code :skull:
+
+## Is it for me ?
+
+:recycle: Did you recently refactor parts of your awesome project ? ✅
+
+🧓 Is your project so old (more than 2 months old) that you can't even remember why some files exist ? ✅
+
+🏭 Is your project so bloated that you're afraid to delete a file ? ✅
+
+**Remnants** find those relics for you so than you can :fire: them in peace.
+
+## Universal
+
+Can be used with webpack, Metro, Rollup (& more) bundled projects but also good old unbundled Node projects.
+
+## Install
+
+```
+yarn global add remnants
+or
+npm i -g remnants
+```
+
+## Usage
+
+In your project directory
+
+```
+remnants
+```
+
+## Advance usage
+
+```
+remnants
+```
+
+## Related
+
+If you're looking for a webpack plugin, give [unused-webpack-plugin](https://github.com/MatthieuLemoine/unused-webpack-plugin) a try. #shamelessplug

index.js

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+/* eslint-disable */
+require = require('esm')(module);
+module.exports = require('./src/index');

jest.js

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+#!/usr/bin/env node
+/* eslint-disable */
+const jestRuntime = require('jest-runtime');
+
+const oldexecModule = jestRuntime.prototype._execModule;
+
+jestRuntime.prototype._execModule = function _execModule(localModule, options) {
+  // Do not apply esm to dependencies & test files to have access to jest globals
+  if (localModule.id.includes('node_modules') || localModule.id.includes('__tests__')) {
+    return oldexecModule.apply(this, [localModule, options]);
+  }
+  localModule.exports = require('esm')(localModule)(localModule.id);
+  return localModule;
+};
+
+cli = require('jest/bin/jest');

package.json

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+{
+  "name": "remnants",
+  "version": "1.0.0",
+  "description": "Find unused files. Spot these residues, leftovers, relics of an ancient past.",
+  "main": "index.js",
+  "module": "src/index.js",
+  "repository": "https://github.com/MatthieuLemoine/remnants",
+  "author": "MatthieuLemoine",
+  "license": "MIT",
+  "dependencies": {},
+  "devDependencies": {
+    "eslint": "^5.6.1",
+    "eslint-config-airbnb-base": "^13.1.0",
+    "eslint-plugin-import": "^2.14.0",
+    "husky": "^1.1.1",
+    "jest": "^23.6.0",
+    "lint-staged": "^7.3.0",
+    "prettier": "^1.14.3",
+    "prettier-eslint-cli": "^4.7.1"
+  },
+  "scripts": {
+    "test": "./jest.js",
+    "lint": "eslint .",
+    "prettify": "prettier-eslint --write \"**/*.js*\" --list-different",
+    "pretty-check": "prettier-eslint \"**/*.js*\" --list-different",
+    "check-version": "node scripts/check-version.js"
+  },
+  "husky": {
+    "hooks": {
+      "pre-commit": "lint-staged"
+    }
+  },
+  "lint-staged": {
+    "linters": {
+      "*.js": [
+        "prettier-eslint --write --config .prettierrc",
+        "eslint --fix",
+        "git add"
+      ],
+      "*.json": [
+        "prettier-eslint --write --config .prettierrc",
+        "git add"
+      ]
+    }
+  }
+}