Upgrading to Babel 6

.babelrc

@@ -0,0 +1,8 @@
+{
+  "presets": ["es2015-loose"],
+  "plugins": [
+    "lodash",
+    "transform-runtime",
+    "add-module-exports"
+  ]
+}

package.json

@@ -24,8 +24,13 @@
   "devDependencies": {
     "JSONStream": "^1.0.3",
     "async": "^0.9.0",
-    "babel": "^5.2.17",
+    "babel-cli": "^6.11.4",
     "babel-eslint": "^5.0.0",
+    "babel-plugin-add-module-exports": "^0.2.1",
+    "babel-plugin-lodash": "^3.2.6",
+    "babel-plugin-transform-runtime": "^6.12.0",
+    "babel-preset-es2015": "^6.13.2",
+    "babel-preset-es2015-loose": "^7.0.0",
     "chai": "^2.3.0",
     "coveralls": "~2.11.1",
     "eslint": "2.2.0",
@@ -46,19 +51,18 @@
     "sqlite3": "^3.0.5",
     "tap-spec": "^4.0.0",
     "tape": "^4.0.0",
-    "through": "^2.3.4",
-    "webpack": "^1.13.0"
+    "through": "^2.3.4"
   },
   "scripts": {
-    "babel": "babel -L -D src/ --out-dir lib/ --source-maps=inline",
-    "build": "./scripts/build.sh",
+    "build": "npm run babel",
+    "babel": "babel src --out-dir lib",
     "coveralls": "cat ./test/coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js",
-    "dev": "babel -L -D -w src/ --out-dir lib/",
+    "dev": "babel -w src --out-dir lib",
     "lint": "eslint src/**",
     "plaintest": "mocha --check-leaks -b -R spec test/index.js && npm run tape",
-    "prepublish": "npm run build",
+    "prepublish": "npm run babel",
     "tape": "node test/tape/index.js | tap-spec",
-    "test": "npm run lint && npm run babel && istanbul --config=test/.istanbul.yml cover node_modules/mocha/bin/_mocha -- --check-leaks -b -R spec test/index.js && npm run tape && (npm run build && echo BUILD TEST OK || echo BUILD TEST FAILED)"
+    "test": "npm run lint && npm run babel && istanbul --config=test/.istanbul.yml cover node_modules/mocha/bin/_mocha -- --check-leaks -b -R spec test/index.js && npm run tape"
   },
   "bin": {
     "knex": "./lib/bin/cli.js"
@@ -103,7 +107,6 @@
     "README.md",
     "src/*",
     "lib/*",
-    "build/*",
     "knex.js",
     "LICENSE",
     "CHANGELOG.md"

src/migrate/index.js

@@ -6,8 +6,8 @@ import mkdirp from 'mkdirp';
 import Promise from '../promise';
 import * as helpers from '../helpers';
 import {
-  assign, bind, chain, difference, each, filter, get, includes, isBoolean,
-  isEmpty, isUndefined, map, template
+  assign, bind, difference, each, filter, get, includes, isBoolean,
+  isEmpty, isUndefined, map, max, template
 } from 'lodash'
 import inherits from 'inherits';
 
@@ -78,7 +78,7 @@ export default class Migrator {
     this.config = this.setConfig(config);
     return this._listCompleted(config)
       .then((completed) => {
-        const val = chain(completed).map(value => value.split('_')[0]).max().value();
+        const val = max(map(completed, value => value.split('_')[0]));
         return (isUndefined(val) ? 'none' : val);
       })
   }