---
title: "Introducing: Local Type Inference for Flow"
short-title: "Introducing Local Type Inference"
authors: [michael-vitousek]
medium-link: "https://medium.com/flow-type/introducing-local-type-inference-for-flow-6af65b7830aa"
---

:::info[Historical]
This post announced local type inference when it was introduced. For current syntax and behavior, see the [Annotation Requirement](/en/docs/lang/annotation-requirement) documentation.
:::

We're replacing Flow’s current inference engine with a system that behaves more predictably and can be reasoned about more locally.

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