Exposed JavaScript Source Map
This source map is publicly readable, so your original source — including comments, internal file paths and any logic you assumed minification hid — can be reconstructed exactly.
Why it matters
This source map is publicly readable, so your original source — including comments, internal file paths and any logic you assumed minification hid — can be reconstructed exactly. It does not expose credentials by itself, but it removes the effort of understanding how your application works.
How ShipReady detects it
Disclosure derived from a PAGE's own scripts: published source maps, and directory listings on the folders those scripts live in. Both are page-scoped because both are computed from the bundle the page links, and route-split builds serve different bundles from different directories.
Detection is deterministic. ShipReady reports this only when it observes the condition directly, and prefers to miss a real problem over inventing one. Rule version 1.2.0.
How to fix it
This is the prompt ShipReady puts in your report — written to be pasted straight into Cursor, Claude Code, or whichever assistant built the app.
Source maps (.map files) for JavaScript bundles are publicly accessible. This exposes your original, unminified source code. Configure your build tool to disable source maps in production.
Frequently asked questions
- What does "Exposed JavaScript Source Map" mean?
- This source map is publicly readable, so your original source — including comments, internal file paths and any logic you assumed minification hid — can be reconstructed exactly.
- How serious is it?
- ShipReady rates this low. Worth fixing. Small individually, and they accumulate.
- How do I fix it?
- Paste the fix prompt on this page into Cursor, Claude Code or your AI editor. It is the same prompt ShipReady puts in your report.
- Can I check my own site?
- Yes — ShipReady scans up to ten pages of any public site for free and reports this alongside every other check.
Related checks
Does your site have this?
ShipReady checks this and 73 other things across up to ten pages of your site. Free, no signup.
Scan my site