Transform/polyfill Object.assign and support node version 0.10 and 0.12.

 - Only run linting in node > 6
 - Dont run prepublish on install.

Author: beefancohen

.babelrc

@@ -1,3 +1,6 @@
 {
-  "presets": ["es2015"]
+  "presets": ["es2015"],
+  "plugins": [
+    ["transform-replace-object-assign", { "moduleSpecifier": "object.assign" }],
+  ],
 }

.travis.yml

@@ -1,10 +1,13 @@
 language: node_js
 node_js:
-  - 4
-  - 5
-  - 6
+  - "12"
+  - "10"
+  - "8"
+  - "6"
+  - "4"
+  - "0.12"
+  - "0.10"
 cache:
-  yarn: true
   directories:
     - node_modules
 after_success:

package.json

@@ -4,11 +4,11 @@
   "description": "AST utility module for statically analyzing JSX",
   "main": "lib/index.js",
   "scripts": {
-    "build": "rimraf lib && babel src --out-dir lib",
-    "prepublish": "npm run lint && npm run test && npm run build",
+    "prebuild": "rimraf lib",
+    "build": "babel src --out-dir lib",
+    "prepublish": "not-in-publish || (npm test && npm run build)",
     "coveralls": "cat ./reports/lcov.info | coveralls",
-    "lint": "eslint  --config .eslintrc .",
-    "lint:fix": "npm run lint -- --fix",
+    "lint": "eslint .",
     "pretest": "npm run lint",
     "test": "jest --coverage",
     "test:watch": "npm test -- --watch"
@@ -19,13 +19,15 @@
     "babel-core": "^6.26.3",
     "babel-eslint": "^7.2.3",
     "babel-jest": "^20.0.3",
+    "babel-plugin-transform-replace-object-assign": "^2.0.0",
     "babel-polyfill": "^6.26.0",
     "babel-preset-es2015": "^6.24.1",
     "babylon": "^6.18.0",
     "coveralls": "^2.13.3",
     "eslint": "^5.16.0",
     "eslint-config-airbnb-base": "^13.1.0",
     "eslint-plugin-import": "^2.17.2",
+    "in-publish": "^2.0.0",
     "jest": "^20.0.4",
     "jest-cli": "^20.0.4",
     "rimraf": "^2.6.3"
@@ -56,6 +58,7 @@
     ]
   },
   "dependencies": {
-    "array-includes": "^3.0.3"
+    "array-includes": "^3.0.3",
+    "object.assign": "^4.1.0"
   }
 }

src/values/expressions/ObjectExpression.js

@@ -1,3 +1,5 @@
+import assign from 'object.assign';
+
 /**
  * Extractor function for an ObjectExpression type value node.
  * An object expression is using {}.
@@ -12,7 +14,7 @@ export default function extractValueFromObjectExpression(value) {
     // Support types: SpreadProperty and ExperimentalSpreadProperty
     if (/^(?:Experimental)?Spread(?:Property|Element)$/.test(property.type)) {
       if (property.argument.type === 'ObjectExpression') {
-        return Object.assign(object, extractValueFromObjectExpression(property.argument));
+        return assign(object, extractValueFromObjectExpression(property.argument));
       }
     } else {
       object[getValue(property.key)] = getValue(property.value);