Debugger Statement Finder
Find and remove leftover debugger statements from your JavaScript/TypeScript code
About this ToolHow it works, benefits & use casesTap to collapse
The Debugger Statement Finder scans JavaScript or TypeScript for leftover debugger statements — the ones that silently pause execution when devtools are open and should never reach production. Paste your code and click "Find Debugger Statements" to get a report listing every occurrence with its line and column number, the trimmed statement, and a few lines of surrounding context with the offending line marked by >>>. If you would rather clean rather than just locate, "Remove Debugger Statements" strips each debugger line and collapses the resulting extra blank lines, returning the cleaned source ready to copy or download. A "Load example" button supplies a sample with several debugger statements scattered through functions, loops, and an async call so you can see both modes in action. The output panel relabels itself ("Findings" or "Cleaned code") and adjusts its download file name accordingly, and everything runs locally in the browser.
How to Use
- 1Paste your JavaScript or TypeScript into the code panel, or click "Load example" to try it.
- 2Click "Find Debugger Statements" to see a line-and-column report with surrounding context.
- 3Or click "Remove Debugger Statements" to strip them and get cleaned source instead.
- 4Review the output panel — it shows "Findings" for a scan or "Cleaned code" after removal.
- 5Copy the result or download it (debugger-report.txt for a scan, cleaned.ts for removed code).
Key Benefits
- Locates every debugger statement with precise line and column numbers
- Shows two lines of context around each match with the line marked by >>>
- Separate remove mode that strips statements and tidies leftover blank lines
- Reports a total count so you know how many were found
- Bundled example covering functions, array callbacks, loops, and async code
- Output panel and download name adapt to whether you scanned or cleaned
- Pure in-browser processing — your code is never uploaded
Common Use Cases
- Pre-commit check to make sure no debugger statements slipped into a changeset
- Auditing a file flagged by a code reviewer for leftover breakpoints
- Cleaning debugger lines from a snippet before pasting it into production code
- Pinpointing the exact line of a stray debugger that keeps pausing devtools
- Quickly confirming a file is free of debugger statements before a release
Paste the code you want to scan for debugger statements
Scan results with line numbers
Run to see results.
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Find produces a read-only report: a count plus, for each debugger statement, its line and column, the statement text, and a small context window with the matched line prefixed by >>>. Remove instead returns your code with every debugger line stripped out and extra blank lines collapsed. The output panel header switches between "Findings" and "Cleaned code" depending on which you ran.
It scans line by line for the whole word debugger using a word-boundary match, so it catches both standalone debugger; lines and ones with trailing comments like debugger; // check this. Because the match is word-bounded, identifiers that merely contain the text (such as a variable named debuggerMode) are not flagged.