Initial implementation extracted from Redux

.babelrc

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+{
+  "stage": 0,
+  "loose": "all"
+}

.eslintrc

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+{
+  "extends": "eslint-config-airbnb",
+  "env": {
+    "mocha": true,
+    "node": true
+  },
+  "globals": {
+    "expect": true
+  },
+  "rules": {
+    "padded-blocks": 0,
+    "no-use-before-define": [2, "nofunc"],
+    "no-unused-expressions": 0
+  }
+}

.gitignore

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+node_modules
+coverage
+*.log
+lib

.npmignore

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+src

.travis.yml

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+language: node_js
+node_js:
+  - "iojs"

README.md

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+redux-thunk
+=============
+
+Thunk [middleware](https://github.com/gaearon/redux/blob/master/docs/middleware.md) for Redux.
+
+```js
+npm install --save redux-thunk
+```
+
+## Usage
+
+TODO
+
+## License
+
+MIT

package.json

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+{
+  "name": "redux-thunk",
+  "version": "0.1.0",
+  "description": "Thunk middleware for Redux.",
+  "main": "lib/index.js",
+  "scripts": {
+    "prepublish": "rm -rf lib && babel src --out-dir lib"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/gaearon/redux-thunk.git"
+  },
+  "homepage": "https://github.com/gaearon/redux-thunk",
+  "keywords": [
+    "redux",
+    "thunk",
+    "middleware",
+    "redux-middleware",
+    "flux"
+  ],
+  "author": "Dan Abramov <dan.abramov@me.com>",
+  "license": "MIT",
+  "devDependencies": {
+    "babel": "^5.6.14",
+    "babel-core": "^5.6.15",
+    "babel-eslint": "^3.1.20",
+    "eslint": "^0.24.0",
+    "eslint-config-airbnb": "0.0.6"
+  }
+}

src/index.js

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+export default function thunkMiddleware({ dispatch, getState }) {
+  return next => action =>
+    typeof action === 'function' ?
+      action(dispatch, getState) :
+      next(action);
+}