migrate to Babel v7 (#67)

Author: jpdriver

.babelrc

@@ -1,7 +1,14 @@
 {
-  "presets": ["es2015"],
+  "presets": [
+    [
+      "@babel/preset-env", {
+        "targets": {
+          "node": "4"
+        }
+      }
+    ]
+  ],
   "plugins": [
-    "transform-object-rest-spread",
-    "transform-flow-strip-types",
+    "@babel/transform-flow-strip-types",
   ]
 }

package.json

@@ -30,15 +30,12 @@
 		"jest": "jest --coverage __tests__/**/*"
 	},
 	"devDependencies": {
-		"babel-cli": "^6.26.0",
-		"babel-core": "^6.26.3",
+		"@babel/cli": "^7.7.7",
+		"@babel/core": "^7.7.7",
+		"@babel/plugin-transform-flow-strip-types": "^7.7.4",
+		"@babel/preset-env": "^7.7.7",
 		"babel-eslint": "^10.0.3",
-		"babel-jest": "^23.6.0",
-		"babel-plugin-transform-es2015-template-literals": "^6.22.0",
-		"babel-plugin-transform-flow-strip-types": "^6.22.0",
-		"babel-plugin-transform-object-rest-spread": "^6.26.0",
-		"babel-polyfill": "^6.26.0",
-		"babel-preset-es2015": "^6.24.1",
+		"babel-jest": "^24.9.0",
 		"coveralls": "^3.0.9",
 		"eslint": "^6.7.2",
 		"eslint-config-prettier": "^6.7.0",
@@ -47,7 +44,7 @@
 		"expect": "^24.9.0",
 		"flow-bin": "^0.105.0",
 		"in-publish": "^2.0.0",
-		"jest": "^23.6.0",
+		"jest": "^24.9.0",
 		"jscodeshift": "^0.6.4",
 		"minimist": "^1.2.0",
 		"object.assign": "^4.1.0",
@@ -61,6 +58,7 @@
 	},
 	"license": "MIT",
 	"dependencies": {
+		"@babel/runtime": "^7.7.7",
 		"ast-types-flow": "^0.0.7",
 		"jsx-ast-utils": "^2.2.3"
 	},