---
title: "Local Type Inference for Flow"
short-title: "Local Type Inference"
authors: [sam-zhou]
medium-link: "https://medium.com/flow-type/local-type-inference-for-flow-aaa65d071347"
---

:::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.
:::

Local Type Inference makes Flow’s inference behavior more reliable and predictable, by modestly increasing Flow’s annotation requirement, bringing it closer to industry standard and capitalizing on increasingly strongly and explicitly typed codebases.

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