Paul via matrix 
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The problem with the mech's server component is most likely due to changes in the Express api with the upgrade to v5.
a JSReturnStatementNode
The error probably occurs because Express 5 parses routing patterns more strictly. The issue with the regular expression pattern may be related to how the route parameters are defined. matrix , page
See code
return app.get('/plugin/mech/run/:slug([a-z-]+)/:itemId', cors, (req, res, next) => …
Error:
failed to start plugin wiki-plugin-mech TypeError: Unexpected ( at 22, expected END: https://git.new/pathToRegexpError –– Path-to-RegExp. page
> Regexp characters are not supported.
Here's one way to fix this:
// Change this: app.get('/plugin/mech/run/:slug([a-z-]+)/:itemId', cors, (req, res, next) => { // To this: app.get('/plugin/mech/run/:slug/:itemId', cors, (req, res, next) => {
Then add validation inside the handler:
// Inside the route handler: const slug = req.params.slug; if (!slug.match(/^[a-z-]+$/)) { return res.status(400).json({ error: 'Invalid slug format' }); }
This change:
Removes the problematic regex from the route path
Adds manual validation of the slug format
Maintains the same security checks
Works with Express 5's stricter router
pages/wiki-plugin-mech
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