In the project directory:
npm install tessera tilelive-mapnik tilelive-carto
brew install fswatchCopy tilemill.scpt and tilemill.sh from this gist into the same directory and run ./tilemill.sh.
make-based build for a map project (e.g. Toner, openstreetmap-carto). If you're using a vanilla TileMill project (with local datasources, i.e. no Millstone), remove make xml and change the map URI to carto+file://./project.mml.
| tell application "Google Chrome" | |
| activate | |
| set theUrl to "http://localhost:8080/" | |
| if (count every window) = 0 then | |
| make new window | |
| end if | |
| set found to false | |
| set theTabIndex to -1 | |
| repeat with theWindow in every window | |
| set theTabIndex to 0 | |
| repeat with theTab in every tab of theWindow | |
| set theTabIndex to theTabIndex + 1 | |
| if theTab's URL starts with theUrl then | |
| set found to true | |
| exit | |
| end if | |
| end repeat | |
| if found then | |
| exit repeat | |
| end if | |
| end repeat | |
| if found then | |
| tell theTab to reload | |
| set theWindow's active tab index to theTabIndex | |
| set index of theWindow to 1 | |
| else | |
| tell window 1 to make new tab with properties {URL:theUrl} | |
| end if | |
| end tell |
| #!/bin/sh | |
| PATH=node_modules/.bin:$PATH | |
| while true; do | |
| make xml | |
| tessera mapnik://./project.xml & | |
| pid=$! | |
| # alternately, if make is not in use | |
| # tessera carto+file://./project.mml & | |
| # pid=$! | |
| # give tessera time to start | |
| sleep 1 | |
| # comment this out if you don't want Chrome to automatically reload | |
| osascript tilemill.scpt | |
| fswatch -1 . | |
| # kill tessera | |
| kill $pid | |
| done |