diff --git a/.eslintrc b/.eslintrc
new file mode 100644
index 0000000..8dc6807
--- /dev/null
+++ b/.eslintrc
@@ -0,0 +1,21 @@
+{
+  "rules": {
+    "no-console": "off",
+    "indent": [ "error", 2 ],
+    "quotes": [ "error", "single" ],
+    "semi": ["error", "always"],
+    "linebreak-style": [ "error", "unix" ]
+  },
+  "env": {
+    "es6": true,
+    "node": true,
+    "mocha": true,
+    "jasmine": true
+  },
+  "ecmaFeatures": {
+    "modules": true,
+    "experimentalObjectRestSpread": true,
+    "impliedStrict": true
+  },
+  "extends": "eslint:recommended"
+}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9bc393d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,141 @@
+
+# Created by https://www.gitignore.io/api/osx,vim,node,linux,windows
+
+### Linux ###
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# 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
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Typescript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+
+### OSX ###
+*.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
+
+### Vim ###
+# swap
+[._]*.s[a-v][a-z]
+[._]*.sw[a-p]
+[._]s[a-v][a-z]
+[._]sw[a-p]
+# session
+Session.vim
+# temporary
+.netrwhist
+# auto-generated tag files
+tags
+
+### Windows ###
+# Windows thumbnail cache files
+Thumbs.db
+ehthumbs.db
+ehthumbs_vista.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# End of https://www.gitignore.io/api/osx,vim,node,linux,windows
diff --git a/lib/fp.js b/lib/fp.js
new file mode 100644
index 0000000..5f68f07
--- /dev/null
+++ b/lib/fp.js
@@ -0,0 +1,37 @@
+'use strict';
+
+module.exports = exports = {};
+
+// MAP
+exports.map = (arr, callback) => {
+  if (!arr) throw new Error('array not provided');
+  if (!callback) throw new Error('callback not provided');
+  return Array.prototype.map.call(arr, callback);
+};
+
+//FILTER
+exports.filter = (arr, callback) => {
+  if (!arr) throw new Error('array not provided');
+  if (!callback) throw new Error('callback not provided');
+  return Array.prototype.filter.call(arr, callback);
+};
+
+//REDUCE
+exports.reduce = (arr, callback, init) => {
+  if (!arr) throw new Error('array not provided');
+  if (!callback) throw new Error('callback not provided');
+  return Array.prototype.reduce.call(arr, callback, init);
+};
+
+//CONCAT
+exports.concat = (arr1, arr2) => {
+  if (!arr1) throw new Error ('no array provided');
+  return Array.prototype.concat.apply(arr1, arr2);
+};
+
+//SPLICE
+exports.splice = (arr, start, deleteCount, item) => {
+  if (!arr) throw new Error('array not provided');
+  if (!start) throw new Error('start not provided');
+  return Array.prototype.splice.call(arr, start, deleteCount, item);
+};
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..153c7df
--- /dev/null
+++ b/package.json
@@ -0,0 +1,28 @@
+{
+  "name": "02-tools_and_context",
+  "version": "1.0.0",
+  "description": "![cf](https://i.imgur.com/7v5ASc8.png) 02: Tools and Context ======",
+  "main": "index.js",
+  "directories": {
+    "test": "test"
+  },
+  "scripts": {
+    "test": "mocha",
+    "lint": "eslint ."
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Loaye/02-tools_and_context.git"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/Loaye/02-tools_and_context/issues"
+  },
+  "homepage": "https://github.com/Loaye/02-tools_and_context#readme",
+  "devDependencies": {
+    "chai": "^4.1.0",
+    "mocha": "^3.4.2"
+  }
+}
diff --git a/test/fp-test.js b/test/fp-test.js
new file mode 100644
index 0000000..1d29b9a
--- /dev/null
+++ b/test/fp-test.js
@@ -0,0 +1,46 @@
+'use strict';
+
+const fp = require('../lib/fp.js');
+const expect = require('chai').expect;
+
+describe('Fp', function() {
+  describe('#map', function() {
+    it('should return 2 4 6 8', function() {
+      let result = fp.map([1, 2, 3, 4], function(n) {return(n * 2)});
+      expect(fp.map).to.be.a('function');
+      expect(result).to.deep.equal([2, 4, 6, 8]);
+    });
+  });
+
+  describe('#filter', function() {
+    it('should return 1 3 4', function() {
+      let result = fp.filter([1, 2, 3, 4], function(n) {return(n !== 2)});
+      expect(fp.filter).to.be.a('function');
+      expect(result).to.deep.equal([1, 3, 4]);
+    });
+  });
+
+  describe('#reduce', function() {
+    it('should return 10', function() {
+      let result = fp.reduce([1, 2, 3, 4], function(sum, value) {return(sum + value)}, 0);
+      expect(fp.reduce).to.be.a('function');
+      expect(result).to.deep.equal(10);
+    });
+  });
+
+  describe('#concat', function() {
+    it('should return 1 2 3 4 5 6 7 8', function() {
+      let result = fp.concat([1, 2, 3, 4], [5, 6, 7, 8]);
+      expect(fp.concat).to.be.a('function');
+      expect(result).to.deep.equal([ 1, 2, 3, 4, 5, 6, 7, 8 ]);
+    });
+  });
+
+  describe('#splice', function() {
+    it('should return fish', function() {
+      let result = fp.splice([1, 2, 3, 'fish', 5], 3, 1, 4);
+      expect(fp.splice).to.be.a('function');
+      expect(result).to.deep.equal(['fish']);
+    });
+  });
+});