context-type-inference

What problem does it solve?

This guide explains how separating a value from its usage context can cause TypeScript to widen the inferred type, leading to runtime surprises and type errors, and how to preserve the precise context.

Core Features & Use Cases

• Restores context using type annotations, const declarations, as const, or satisfies.
• Helps in scenarios with extracted callbacks, tuple literals, and string literals that widen to general types.
• Provides practical guidance for maintaining accurate types during extraction in complex codebases.

Quick Start

Use a const declaration or explicit type to preserve context when extracting a value.