'Out of Memory' errors during TypeScript compilation are often caused by large, complex types or too many files being included. You can reduce the memory load by optimizing `tsconfig.json` and breaking down the project.

'Out of Memory' errors during TypeScript compilation generally happen when the TypeScript compiler (TSC) has to process too many files or very complex types. One solution is to optimize your tsconfig.json. For example, limiting the number of files included in the compilation using the include and exclude options can significantly reduce memory consumption. You can also break down large projects into smaller, manageable pieces using project references, which allow each part to compile independently. Another solution is to enable skipLibCheck to avoid checking type definitions of external libraries, which can free up memory. If your project uses deeply nested types or recursive types, refactoring them can help reduce the compiler's workload. Additionally, increasing Node.js's memory limit with the --max-old-space-size flag can prevent these errors, but optimizing the project structure is the best long-term fix.