Build script

ZoneGFX packages may have a build script named build.es along with the zonegfx.toml manifest file.

Re-run indicators

Indicate that a build script must re-run when an environment variable changes by tracing:

trace("zone::rerun-if-env-changed=VAR");

Indicate that a build script must re-run when a directory or file changes by tracing:

trace("zone::rerun-if-changed=path/to/file");