Add HTML feature flag

crates/typst-cli/src/args.rs

@@ -283,7 +283,9 @@ pub struct SharedArgs {
 
 /// An in-development feature that may be changed or removed at any time.
 #[derive(Debug, Copy, Clone, Eq, PartialEq, ValueEnum)]
-pub enum Feature {}
+pub enum Feature {
+    Html,
+}
 
 /// Arguments related to where packages are stored in the system.
 #[derive(Debug, Clone, Args)]

crates/typst-cli/src/world.rs

@@ -17,7 +17,7 @@ use typst_kit::fonts::{FontSlot, Fonts};
 use typst_kit::package::PackageStorage;
 use typst_timing::timed;
 
-use crate::args::{Input, SharedArgs};
+use crate::args::{Feature, Input, SharedArgs};
 use crate::compile::ExportCache;
 use crate::download::PrintDownload;
 use crate::package;
@@ -112,8 +112,13 @@ impl SystemWorld {
                 .map(|(k, v)| (k.as_str().into(), v.as_str().into_value()))
                 .collect();
 
-            let features =
-                command.feature.iter().map(|&feature| match feature {}).collect();
+            let features = command
+                .feature
+                .iter()
+                .map(|&feature| match feature {
+                    Feature::Html => typst::Feature::Html,
+                })
+                .collect();
 
             Library::builder().with_inputs(inputs).with_features(features).build()
         };

crates/typst-library/src/lib.rs

@@ -231,7 +231,9 @@ impl FromIterator<Feature> for Features {
 /// An in-development feature that should be enabled.
 #[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
 #[non_exhaustive]
-pub enum Feature {}
+pub enum Feature {
+    Html,
+}
 
 /// Construct the module with global definitions.
 fn global(math: Module, inputs: Dict) -> Module {