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Use when build times are slow. Use when optimizing TypeScript projects. Use when configuring project references. Use when dealing with large codebases. Use when improving IDE responsiveness.
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| name | compiler-performance |
| description | Use when build times are slow. Use when optimizing TypeScript projects. Use when configuring project references. Use when dealing with large codebases. Use when improving IDE responsiveness. |
TypeScript compilation can become slow in large projects. Monitor and optimize compiler performance using techniques like project references, proper tsconfig settings, and avoiding expensive type patterns. Fast compilation improves developer experience.
Monitor and optimize TypeScript performance. Use project references, avoid expensive type patterns, and keep compilation fast.
// AVOID: Expensive recursive types
type DeepPartial<T> = T extends object
? { [K in keyof T]?: DeepPartial<T[K]> }
: T;
// PREFER: Iterative approaches, project references
// Split large projects using project references
// tsconfig.json optimizations
{
"compilerOptions": {
"incremental": true, // Incremental compilation
"tsBuildInfoFile": ".tsbuildinfo"
}
}
Use when defining global types. Use when augmenting window. Use when typing environment variables. Use when working with build-time constants. Use when configuring type definitions.
Use when migrating JavaScript to TypeScript. Use when gradually adopting TypeScript. Use when working with mixed codebases. Use when converting large projects. Use when teams are learning TypeScript.
Use when writing asynchronous code. Use when tempted to use callbacks. Use when composing multiple async operations.
Use when creating types from example data. Use when types don't match all cases. Use when API responses vary.
Use when writing type annotations on variables. Use when TypeScript can infer the type. Use when code feels cluttered with types.
Use when defining array-like types. Use when tempted to use number as index type. Use when understanding array keys.