diff --git a/.eslintrc b/.eslintrc
index 0e3dd96..c94fc4f 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -8,6 +8,6 @@
   },
   "rules": {
     "semi": 0,
-    "comma-dangle": ["error", "always-multiline"],
+    "comma-dangle": ["error", "always-multiline"]
   }
 }
diff --git a/packages/gitmoji-changelog-cli/dist/index.js b/packages/gitmoji-changelog-cli/dist/index.js
new file mode 100755
index 0000000..ce06ee0
--- /dev/null
+++ b/packages/gitmoji-changelog-cli/dist/index.js
@@ -0,0 +1,4 @@
+#! /usr/bin/env node
+'use strict';
+
+console.log('cli');
diff --git a/packages/gitmoji-changelog-cli/package.json b/packages/gitmoji-changelog-cli/package.json
new file mode 100644
index 0000000..2f801c6
--- /dev/null
+++ b/packages/gitmoji-changelog-cli/package.json
@@ -0,0 +1,26 @@
+{
+  "name": "@gitmoji-changelog/cli",
+  "version": "0.0.1",
+  "main": "dist/index.js",
+  "bin": {
+    "gitmoji-changelog": "./dist/index.js"
+  },
+  "description": "Gitmoji Changelog CLI",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/frinyvonnick/gitmoji-changelog.git"
+  },
+  "author": "Yvonnick FRIN (https://github.com/frinyvonnick)",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/frinyvonnick/gitmoji-changelog/issues"
+  },
+  "homepage": "https://github.com/frinyvonnick/gitmoji-changelog#readme",
+  "scripts": {
+    "build": "babel src --out-file dist/index.js"
+  },
+  "devDependencies": {
+    "babel-cli": "^6.26.0"
+  },
+  "dependencies": {}
+}
diff --git a/packages/gitmoji-changelog-cli/src/index.js b/packages/gitmoji-changelog-cli/src/index.js
new file mode 100644
index 0000000..12b2029
--- /dev/null
+++ b/packages/gitmoji-changelog-cli/src/index.js
@@ -0,0 +1,2 @@
+#! /usr/bin/env node
+console.log('cli')
diff --git a/packages/gitmoji-changelog-core/dist/index.js b/packages/gitmoji-changelog-core/dist/index.js
index 365547b..e325b37 100644
--- a/packages/gitmoji-changelog-core/dist/index.js
+++ b/packages/gitmoji-changelog-core/dist/index.js
@@ -3,16 +3,188 @@
 Object.defineProperty(exports, "__esModule", {
   value: true
 });
-exports.transform = transform;
-function transform() {
-  return 'Hello';
+exports.changelog = changelog;
+
+var _parser = require('./parser');
+
+Object.keys(_parser).forEach(function (key) {
+  if (key === "default" || key === "__esModule") return;
+  Object.defineProperty(exports, key, {
+    enumerable: true,
+    get: function get() {
+      return _parser[key];
+    }
+  });
+});
+
+var _gitRawCommits = require('git-raw-commits');
+
+var _gitRawCommits2 = _interopRequireDefault(_gitRawCommits);
+
+var _through = require('through2');
+
+var _through2 = _interopRequireDefault(_through);
+
+var _concatStream = require('concat-stream');
+
+var _concatStream2 = _interopRequireDefault(_concatStream);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+var COMMIT_FORMAT = '%n%H%n%cI%n%s%n%b';
+
+function changelog() {
+  return new Promise(function (resolve) {
+    (0, _gitRawCommits2.default)({
+      format: COMMIT_FORMAT
+    }).pipe(_through2.default.obj(function (data, enc, next) {
+      next(null, (0, _parser.parseCommit)(data.toString()));
+    })).pipe((0, _concatStream2.default)(function (data) {
+      resolve(JSON.stringify(data));
+    }));
+  });
+}
+'use strict';
+
+var _gitRawCommits = require('git-raw-commits');
+
+var _gitRawCommits2 = _interopRequireDefault(_gitRawCommits);
+
+var _index = require('./index');
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function _asyncToGenerator(fn) { return function () { var gen = fn.apply(this, arguments); return new Promise(function (resolve, reject) { function step(key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { return Promise.resolve(value).then(function (value) { step("next", value); }, function (err) { step("throw", err); }); } } return step("next"); }); }; } /* eslint-disable global-require */
+
+
+describe('changelog', function () {
+  beforeAll(function () {
+    _gitRawCommits2.default.mockImplementation(function () {
+      var stream = require('stream');
+      var readable = new stream.Readable();
+      readable.push('c40ee8669ba7ea5151adc2942fa8a7fc98d9e23f\n2018-08-28T10:06:00+02:00\n:sparkles: Upgrade brand new feature\nWaouh this is awesome 2\n');
+      readable.push(null);
+      readable.emit('close');
+      return readable;
+    });
+  });
+
+  it('should generate changelog in json format', _asyncToGenerator( /*#__PURE__*/regeneratorRuntime.mark(function _callee() {
+    var result;
+    return regeneratorRuntime.wrap(function _callee$(_context) {
+      while (1) {
+        switch (_context.prev = _context.next) {
+          case 0:
+            _context.next = 2;
+            return (0, _index.changelog)();
+
+          case 2:
+            result = _context.sent;
+
+
+            expect(result).toEqual(JSON.stringify([{
+              hash: 'c40ee8669ba7ea5151adc2942fa8a7fc98d9e23f',
+              date: '2018-08-28T10:06:00+02:00',
+              subject: ':sparkles: Upgrade brand new feature',
+              body: 'Waouh this is awesome 2'
+            }]));
+
+          case 4:
+          case 'end':
+            return _context.stop();
+        }
+      }
+    }, _callee, undefined);
+  })));
+});
+
+jest.mock('git-raw-commits');
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.parseCommit = parseCommit;
+exports.parse = parse;
+
+var _fp = require('lodash/fp');
+
+var _splitLines = require('split-lines');
+
+var _splitLines2 = _interopRequireDefault(_splitLines);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function _toArray(arr) { return Array.isArray(arr) ? arr : Array.from(arr); }
+
+function parseCommit(commit) {
+  var lines = (0, _splitLines2.default)(commit);
+
+  var _lines$splice = lines.splice(0, lines.length - 1),
+      _lines$splice2 = _toArray(_lines$splice),
+      hash = _lines$splice2[0],
+      date = _lines$splice2[1],
+      subject = _lines$splice2[2],
+      body = _lines$splice2.slice(3);
+
+  return {
+    hash: hash,
+    date: date,
+    subject: subject,
+    body: body.join('\n')
+  };
+}
+
+function parse(commits) {
+  return (0, _fp.flow)((0, _fp.split)('-hash-\n'), _fp.compact, (0, _fp.map)(parseCommit))(commits);
 }
 'use strict';
 
-var _index = require('./index.js');
+var _parser = require('./parser.js');
+
+describe('commits parser', function () {
+  it('should parse a single commit', function () {
+    var commit = 'c40ee8669ba7ea5151adc2942fa8a7fc98d9e23f\n2018-08-28T10:06:00+02:00\n:sparkles: Implements brand new feature\nWaouh this is awesome\n\n';
+    expect((0, _parser.parseCommit)(commit)).toEqual({
+      hash: 'c40ee8669ba7ea5151adc2942fa8a7fc98d9e23f',
+      date: '2018-08-28T10:06:00+02:00',
+      subject: ':sparkles: Implements brand new feature',
+      body: 'Waouh this is awesome\n'
+    });
+  });
+
+  it('should parse a single commit without a body', function () {
+    var commit = 'c40ee8669ba7ea5151adc2942fa8a7fc98d9e23f\n2018-08-28T10:06:00+02:00\n:sparkles: Implements brand new feature\n\n';
+    expect((0, _parser.parseCommit)(commit)).toEqual({
+      hash: 'c40ee8669ba7ea5151adc2942fa8a7fc98d9e23f',
+      date: '2018-08-28T10:06:00+02:00',
+      subject: ':sparkles: Implements brand new feature',
+      body: ''
+    });
+  });
+
+  it('should parse a single commit without a subject', function () {
+    var commit = 'c40ee8669ba7ea5151adc2942fa8a7fc98d9e23f\n2018-08-28T10:06:00+02:00\n\n\n';
+    expect((0, _parser.parseCommit)(commit)).toEqual({
+      hash: 'c40ee8669ba7ea5151adc2942fa8a7fc98d9e23f',
+      date: '2018-08-28T10:06:00+02:00',
+      subject: '',
+      body: ''
+    });
+  });
 
-describe('transform', function () {
-  it('should works', function () {
-    expect((0, _index.transform)()).toEqual('Hello');
+  it('should parse multiple commits', function () {
+    var commits = '-hash-\nc40ee8669ba7ea5151adc2942fa8a7fc98d9e23f\n2018-08-28T10:06:00+02:00\n:sparkles: Upgrade brand new feature\nWaouh this is awesome 2\n\n-hash-\nc40ee8669ba7ea5151adc2942fa8a7fc98d9e23d\n2018-08-28T10:05:00+02:00\n:sparkles: Implements brand new feature\nWaouh this is awesome\n\n';
+    expect((0, _parser.parse)(commits)).toEqual([{
+      hash: 'c40ee8669ba7ea5151adc2942fa8a7fc98d9e23f',
+      date: '2018-08-28T10:06:00+02:00',
+      subject: ':sparkles: Upgrade brand new feature',
+      body: 'Waouh this is awesome 2\n'
+    }, {
+      hash: 'c40ee8669ba7ea5151adc2942fa8a7fc98d9e23d',
+      date: '2018-08-28T10:05:00+02:00',
+      subject: ':sparkles: Implements brand new feature',
+      body: 'Waouh this is awesome\n'
+    }]);
   });
 });