TypeScript Configuration and Performance (original) (raw)

What is the purpose of the tsconfig.json file in a TypeScript project?

• It defines runtime behaviour for TypeScript code.
• It specifies compiler options, file inclusions, and TypeScript project configurations.
• It replaces all JavaScript configuration files.
• It is only required for TypeScript projects larger than 10 files.

Which tsconfig.json option improves performance by only compiling changed files in large projects?

What does the "exclude" option in tsconfig.json do?

• Excludes specific TypeScript files from compilation.
• Prevents JavaScript files from being executed
• Marks files as optional in the TypeScript project.
• Reduces the number of dependencies in node_modules

Which tsconfig.json option can be used to speed up TypeScript compilation by limiting the number of CPU cores used?

• TypeScript does not have a direct CPU-limiting option.

Which tool can be used to analyze and improve TypeScript build performance?

What does the "skipLibCheck": true option do in tsconfig.json?

• Skips type checking for third-party libraries, improving compilation speed.
• Removes all type definitions from node_modules.
• Disables TypeScript’s type-checking system entirely.
• Forces TypeScript to check every single .d.ts file strictly.

How does "isolatedModules": true improve performance in TypeScript projects?

• It ensures each file is compiled independently, allowing faster transpilation.
• It merges all TypeScript files into a single output file.
• It prevents TypeScript from using module imports.
• It optimizes runtime performance instead of compilation speed.

What is the benefit of using esbuild with TypeScript?

• It reduces runtime memory usage in TypeScript applications.
• It speeds up TypeScript transpilation significantly compared to tsc.
• It removes TypeScript's need for tsconfig.json.
• It enables TypeScript code to run in older browsers.

Which strategy helps improve TypeScript build times in a monorepo setup?

• Using project references ("composite": true).
• Running tsc separately for each module.
• Converting all TypeScript files to JavaScript.

What is the advantage of "noEmit": true in TypeScript projects?

• Prevents JavaScript output, useful for type-checking only.
• Optimizes compiled JavaScript for performance.
• Skips type checking and speeds up compilation.
• Forces TypeScript to generate separate .map files.

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