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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Incorrect overload resolution in 3.2.0-rc","articleBody":"\u003c!-- 🚨 STOP 🚨 𝗦𝗧𝗢𝗣 🚨 𝑺𝑻𝑶𝑷 🚨\r\n\r\nHalf of all issues filed here are duplicates, answered in the FAQ, or not appropriate for the bug tracker. Even if you think you've found a *bug*, please read the FAQ first, especially the Common \"Bugs\" That Aren't Bugs section!\r\n\r\nPlease help us by doing the following steps before logging an issue:\r\n  * Search: https://github.com/Microsoft/TypeScript/search?type=Issues\r\n  * Read the FAQ: https://github.com/Microsoft/TypeScript/wiki/FAQ\r\n\r\nPlease fill in the *entire* template below.\r\n--\u003e\r\n\r\n\u003c!-- Please try to reproduce the issue with `typescript@next`. It may have already been fixed. --\u003e\r\n**TypeScript Version:**  3.2.0-rc\r\n\r\n\u003c!-- Search terms you tried before logging this (so others can find this issue more easily) --\u003e\r\n**Search Terms:**\r\nOverload\r\n\r\n**Code**\r\n\r\n```ts\r\nimport { createStore } from 'redux'\r\n\r\nconst initialStore: { foo: {} } = { foo: {} }\r\nconst store = createStore(x =\u003e x, initialStore)\r\n```\r\n\r\n**Expected behavior:**\r\n\r\nThe second overload of `createStore` should be chosen, as `initialStore` is not a `StoreEnhancer` but a `preloadedState`.\r\n\r\n**Actual behavior:**\r\n\r\nThe `StoreEnhancer`, a function, overload of `createStore` is chosen despite `initialStore` being absolutely, definitely not a function, causing the type of `x` to be incorrectly inferred as `{} | undefined`.\r\n","author":{"url":"https://github.com/Jessidhia","@type":"Person","name":"Jessidhia"},"datePublished":"2018-11-16T02:38:57.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/28567/TypeScript/issues/28567"}