ADR-0002 · Wildcards via Directory Index
Status: Accepted
A flat file is exact-match. A directory index is a catch-all.
routes/
crypto.page.ts → matches /crypto only
crypto/index.page.ts → matches /crypto and /crypto/* (catch-all)
Inside the directory index, params.rest holds the unmatched tail.
Why
Wildcards in other frameworks are special syntax: [...rest], *, or a config flag. emroute already had two distinct file layouts — flat and directory-indexed — with no semantic difference. Promoting that into the routing model gave wildcards for free, with no new syntax to learn.
Specific routes still beat the catch-all. /crypto/eth matches a sibling eth.page.ts before falling through to index.page.ts with params.rest = "eth".