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 .…