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Essential Strategies for Debugging TypeScript Code Effectively

DEV Community·Jeferson Eiji·6 months ago
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Debugging TypeScript code can be more complex than plain JavaScript due to static typing and the compilation step. Here are practical strategies to efficiently debug your TypeScript projects:

1. Leverage TypeScript Compiler ( tsc )

Run tsc to catch type errors before running your code.

Example:

tsc src/index.ts

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2. Use Source Maps

Source maps let you debug TypeScript code directly in your browser or Node.js debugger.

Enable source maps in your tsconfig.json :

{ "compilerOptions" : { "sourceMap" : true } }

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3. Set Breakpoints in Editors

Modern editors like VSCode can set breakpoints in .ts files.

Use the built-in debugger panel to step through TypeScript code.

4. Add Console Logs Strategically

Insert console.log at key locations to inspect variables and flow.

Example:

function add ( a : number , b : number ): number { console .…

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