optimizing-compilation
Optimizing Compilation in TypeScript:
Incremental Builds: Use the
incremental
flag intsconfig.json
to enable incremental compilation. This tells the TypeScript compiler to save information about the project graph from the last compilation to speed up subsequent compilations.Project References: Use project references to break up your codebase into smaller chunks that can be compiled independently. This is especially useful in monorepos or large codebases.
Avoid
any
Type: Minimize the use ofany
type, as it can increase the complexity of type-checking and slow down the compiler.TypeScript Version: Always use the latest stable TypeScript version for better performance optimizations and newer features.
Type Simplification: Simplify complex types where possible since deep type hierarchies can lead to increased compilation times.
Exclude Unnecessary Files: Use the
exclude
option intsconfig.json
to ignore files or directories that don't need to be compiled.No Implicit Any: Turn on the
noImplicitAny
flag. This can actually help the compiler by reducing the need to infer types.Skip Lib Check: Use the
skipLibCheck
option to skip type checking of declaration files (*.d.ts).Strict Type-Checking Options: Enabling strict type-checking can improve performance, as it helps TypeScript to use more efficient algorithms.
Watch Mode: For development, use the TypeScript compiler’s watch mode (
tsc -w
) to only recompile files that have changed.Use
ts-loader
orawesome-typescript-loader
for Webpack: If you are bundling with Webpack, use optimized TypeScript loaders that support incremental compilation.Isolated Modules: Consider setting
isolatedModules
to true to ensure each file can be transpiled in isolation, which can improve build times.Optimize
tsconfig
Settings: Ensure that yourtsconfig.json
settings are optimized for your project's needs, avoiding overly strict settings that could cause performance issues.Memory and CPU Constraints: Be mindful of memory and CPU constraints, especially in CI/CD pipelines. Sometimes, the type of machine can affect the compilation time.
Profile the Compiler: Use the TypeScript compiler’s
--diagnostics
and--extendedDiagnostics
flags to profile the compilation process and identify bottlenecks.