44 files changed, 119 insertions, 125 deletions

diff --git a/cli/src/main.rs b/cli/src/main.rs
index 62cad8ab..c7eb2977 100644
--- a/cli/src/main.rs
+++ b/cli/src/main.rs
@@ -17,13 +17,12 @@ use pico_args::Arguments;
 use same_file::{is_same_file, Handle};
 use siphasher::sip128::{Hasher128, SipHasher};
 use termcolor::{ColorChoice, StandardStream, WriteColor};
-use walkdir::WalkDir;
-
 use typst::diag::{FileError, FileResult, SourceError, StrResult};
 use typst::font::{Font, FontBook, FontInfo, FontVariant};
 use typst::syntax::{Source, SourceId};
 use typst::util::{Buffer, PathExt};
 use typst::{Config, World};
+use walkdir::WalkDir;
 
 type CodespanResult<T> = Result<T, CodespanError>;
 type CodespanError = codespan_reporting::files::Error;
diff --git a/library/src/utility/math.rs b/library/src/base/calc.rs
index dd37e8e7..dd37e8e7 100644
--- a/library/src/utility/math.rs
+++ b/library/src/base/calc.rs
diff --git a/library/src/utility/color.rs b/library/src/base/color.rs
index 8bb12334..8bb12334 100644
--- a/library/src/utility/color.rs
+++ b/library/src/base/color.rs
diff --git a/library/src/utility/data.rs b/library/src/base/data.rs
index 3edade55..1199056f 100644
--- a/library/src/utility/data.rs
+++ b/library/src/base/data.rs
@@ -1,6 +1,6 @@
 use std::fmt::Write;
 
-use typst::diag::format_xml_like_error;
+use typst::diag::{format_xml_like_error, FileError};
 
 use crate::prelude::*;
 
diff --git a/library/src/utility/mod.rs b/library/src/base/mod.rs
index 402944cd..bb1c8c51 100644
--- a/library/src/utility/mod.rs
+++ b/library/src/base/mod.rs
@@ -1,13 +1,13 @@
-//! Computational utility functions.
+//! Foundational functions.
 
+mod calc;
 mod color;
 mod data;
-mod math;
 mod string;
 
+pub use calc::*;
 pub use color::*;
 pub use data::*;
-pub use math::*;
 pub use string::*;
 
 use comemo::Track;
diff --git a/library/src/utility/string.rs b/library/src/base/string.rs
index ed444d35..ed444d35 100644
--- a/library/src/utility/string.rs
+++ b/library/src/base/string.rs
diff --git a/library/src/ext.rs b/library/src/ext.rs
index 72ef484b..6f5b1b67 100644
--- a/library/src/ext.rs
+++ b/library/src/ext.rs
@@ -115,7 +115,7 @@ impl StyleMapExt for StyleMap {
     fn set_family(&mut self, preferred: text::FontFamily, existing: StyleChain) {
         self.set(
             text::TextNode::FAMILY,
-            FallbackList(
+            text::FallbackList(
                 std::iter::once(preferred)
                     .chain(existing.get(text::TextNode::FAMILY).0.iter().cloned())
                     .collect(),
diff --git a/library/src/layout/flow.rs b/library/src/layout/flow.rs
index a5992796..347c1dd8 100644
--- a/library/src/layout/flow.rs
+++ b/library/src/layout/flow.rs
@@ -80,7 +80,7 @@ impl PartialOrd for FlowChild {
 }
 
 /// Performs flow layout.
-pub struct FlowLayouter {
+struct FlowLayouter {
     /// The regions to layout children into.
     regions: Regions,
     /// Whether the flow should expand to fill the region.
@@ -112,7 +112,7 @@ enum FlowItem {
 
 impl FlowLayouter {
     /// Create a new flow layouter.
-    pub fn new(regions: &Regions) -> Self {
+    fn new(regions: &Regions) -> Self {
         let expand = regions.expand;
         let full = regions.first;
 
@@ -132,7 +132,7 @@ impl FlowLayouter {
     }
 
     /// Layout spacing.
-    pub fn layout_spacing(&mut self, spacing: Spacing, styles: StyleChain) {
+    fn layout_spacing(&mut self, spacing: Spacing, styles: StyleChain) {
         match spacing {
             Spacing::Relative(v) => {
                 // Resolve the spacing and limit it to the remaining space.
@@ -150,7 +150,7 @@ impl FlowLayouter {
     }
 
     /// Layout a block.
-    pub fn layout_block(
+    fn layout_block(
         &mut self,
         world: Tracked<dyn World>,
         block: &Content,
@@ -206,7 +206,7 @@ impl FlowLayouter {
     }
 
     /// Finish the frame for one region.
-    pub fn finish_region(&mut self) {
+    fn finish_region(&mut self) {
         // Determine the size of the flow in this region dependening on whether
         // the region expands.
         let mut size = self.expand.select(self.full, self.used);
@@ -254,7 +254,7 @@ impl FlowLayouter {
     }
 
     /// Finish layouting and return the resulting frames.
-    pub fn finish(mut self) -> Vec<Frame> {
+    fn finish(mut self) -> Vec<Frame> {
         if self.expand.y {
             while !self.regions.backlog.is_empty() {
                 self.finish_region();
diff --git a/library/src/layout/grid.rs b/library/src/layout/grid.rs
index f6610d78..a6f93ab6 100644
--- a/library/src/layout/grid.rs
+++ b/library/src/layout/grid.rs
@@ -99,7 +99,7 @@ castable! {
 }
 
 /// Performs grid layout.
-pub struct GridLayouter<'a> {
+struct GridLayouter<'a> {
     /// The core context.
     world: Tracked<'a, dyn World>,
     /// The grid cells.
@@ -140,7 +140,7 @@ impl<'a> GridLayouter<'a> {
     /// Create a new grid layouter.
     ///
     /// This prepares grid layout by unifying content and gutter tracks.
-    pub fn new(
+    fn new(
         world: Tracked<'a, dyn World>,
         tracks: Axes<&[TrackSizing]>,
         gutter: Axes<&[TrackSizing]>,
@@ -211,7 +211,7 @@ impl<'a> GridLayouter<'a> {
     }
 
     /// Determines the columns sizes and then layouts the grid row-by-row.
-    pub fn layout(mut self) -> SourceResult<Vec<Frame>> {
+    fn layout(mut self) -> SourceResult<Vec<Frame>> {
         self.measure_columns()?;
 
         for y in 0 .. self.rows.len() {
diff --git a/library/src/layout/mod.rs b/library/src/layout/mod.rs
index ddfaa351..5ab5f42e 100644
--- a/library/src/layout/mod.rs
+++ b/library/src/layout/mod.rs
@@ -44,16 +44,16 @@ use crate::text::{
     LinebreakNode, ParChild, ParNode, ParbreakNode, SmartQuoteNode, SpaceNode, TextNode,
 };
 
-/// The root-level layout.
+/// Root-level layout.
 #[capability]
-pub trait Layout: 'static + Sync + Send {
+pub trait LayoutRoot: 'static + Sync + Send {
     /// Layout into one frame per page.
-    fn layout(&self, world: Tracked<dyn World>) -> SourceResult<Vec<Frame>>;
+    fn layout_root(&self, world: Tracked<dyn World>) -> SourceResult<Vec<Frame>>;
 }
 
-impl Layout for Content {
+impl LayoutRoot for Content {
     #[comemo::memoize]
-    fn layout(&self, world: Tracked<dyn World>) -> SourceResult<Vec<Frame>> {
+    fn layout_root(&self, world: Tracked<dyn World>) -> SourceResult<Vec<Frame>> {
         let styles = StyleChain::with_root(&world.config().styles);
         let scratch = Scratch::default();
 
@@ -259,7 +259,7 @@ struct Scratch<'a> {
 
 /// Determines whether a style could interrupt some composable structure.
 #[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd)]
-pub enum Interruption {
+enum Interruption {
     /// The style forces a list break.
     List,
     /// The style forces a paragraph break.
@@ -269,11 +269,7 @@ pub enum Interruption {
 }
 
 impl<'a> Builder<'a> {
-    pub fn new(
-        world: Tracked<'a, dyn World>,
-        scratch: &'a Scratch<'a>,
-        top: bool,
-    ) -> Self {
+    fn new(world: Tracked<'a, dyn World>, scratch: &'a Scratch<'a>, top: bool) -> Self {
         Self {
             world,
             scratch,
@@ -284,7 +280,7 @@ impl<'a> Builder<'a> {
         }
     }
 
-    pub fn into_doc(
+    fn into_doc(
         mut self,
         styles: StyleChain<'a>,
     ) -> SourceResult<(DocNode, StyleChain<'a>)> {
@@ -293,7 +289,7 @@ impl<'a> Builder<'a> {
         Ok((DocNode(pages), shared))
     }
 
-    pub fn into_flow(
+    fn into_flow(
         mut self,
         styles: StyleChain<'a>,
     ) -> SourceResult<(FlowNode, StyleChain<'a>)> {
@@ -302,7 +298,7 @@ impl<'a> Builder<'a> {
         Ok((FlowNode(children), shared))
     }
 
-    pub fn accept(
+    fn accept(
         &mut self,
         content: &'a Content,
         styles: StyleChain<'a>,
@@ -740,7 +736,7 @@ enum Last {
 
 impl<'a, T> CollapsingBuilder<'a, T> {
     /// Create a new style-vec builder.
-    pub fn new() -> Self {
+    fn new() -> Self {
         Self {
             builder: StyleVecBuilder::new(),
             staged: vec![],
@@ -749,7 +745,7 @@ impl<'a, T> CollapsingBuilder<'a, T> {
     }
 
     /// Whether the builder is empty.
-    pub fn is_empty(&self) -> bool {
+    fn is_empty(&self) -> bool {
         self.builder.is_empty() && self.staged.is_empty()
     }
 
@@ -760,7 +756,7 @@ impl<'a, T> CollapsingBuilder<'a, T> {
     /// Between weak items, there may be at least one per layer and among the
     /// candidates the strongest one (smallest `weakness`) wins. When tied,
     /// the one that compares larger through `PartialOrd` wins.
-    pub fn weak(&mut self, item: T, styles: StyleChain<'a>, weakness: u8)
+    fn weak(&mut self, item: T, styles: StyleChain<'a>, weakness: u8)
     where
         T: PartialOrd,
     {
@@ -788,31 +784,31 @@ impl<'a, T> CollapsingBuilder<'a, T> {
     }
 
     /// Forces nearby weak items to collapse.
-    pub fn destructive(&mut self, item: T, styles: StyleChain<'a>) {
+    fn destructive(&mut self, item: T, styles: StyleChain<'a>) {
         self.flush(false);
         self.builder.push(item, styles);
         self.last = Last::Destructive;
     }
 
     /// Allows nearby weak items to exist.
-    pub fn supportive(&mut self, item: T, styles: StyleChain<'a>) {
+    fn supportive(&mut self, item: T, styles: StyleChain<'a>) {
         self.flush(true);
         self.builder.push(item, styles);
         self.last = Last::Supportive;
     }
 
     /// Has no influence on other items.
-    pub fn ignorant(&mut self, item: T, styles: StyleChain<'a>) {
+    fn ignorant(&mut self, item: T, styles: StyleChain<'a>) {
         self.staged.push((item, styles, None));
     }
 
     /// Iterate over the contained items.
-    pub fn items(&self) -> impl DoubleEndedIterator<Item = &T> {
+    fn items(&self) -> impl DoubleEndedIterator<Item = &T> {
         self.builder.items().chain(self.staged.iter().map(|(item, ..)| item))
     }
 
     /// Return the finish style vec and the common prefix chain.
-    pub fn finish(mut self) -> (StyleVec<T>, StyleChain<'a>) {
+    fn finish(mut self) -> (StyleVec<T>, StyleChain<'a>) {
         self.flush(false);
         self.builder.finish()
     }
diff --git a/library/src/layout/page.rs b/library/src/layout/page.rs
index 53a8cbc7..7ce0d633 100644
--- a/library/src/layout/page.rs
+++ b/library/src/layout/page.rs
@@ -2,6 +2,7 @@ use std::str::FromStr;
 
 use super::ColumnsNode;
 use crate::prelude::*;
+use crate::text::TextNode;
 
 /// Layouts its child onto one or multiple pages.
 #[derive(PartialEq, Clone, Hash)]
diff --git a/library/src/layout/stack.rs b/library/src/layout/stack.rs
index 44bcbf67..ec1063fd 100644
--- a/library/src/layout/stack.rs
+++ b/library/src/layout/stack.rs
@@ -89,7 +89,7 @@ castable! {
 }
 
 /// Performs stack layout.
-pub struct StackLayouter<'a> {
+struct StackLayouter<'a> {
     /// The stacking direction.
     dir: Dir,
     /// The axis of the stacking direction.
@@ -125,7 +125,7 @@ enum StackItem {
 
 impl<'a> StackLayouter<'a> {
     /// Create a new stack layouter.
-    pub fn new(dir: Dir, regions: &Regions, styles: StyleChain<'a>) -> Self {
+    fn new(dir: Dir, regions: &Regions, styles: StyleChain<'a>) -> Self {
         let axis = dir.axis();
         let expand = regions.expand;
         let full = regions.first;
@@ -149,7 +149,7 @@ impl<'a> StackLayouter<'a> {
     }
 
     /// Add spacing along the spacing direction.
-    pub fn layout_spacing(&mut self, spacing: Spacing) {
+    fn layout_spacing(&mut self, spacing: Spacing) {
         match spacing {
             Spacing::Relative(v) => {
                 // Resolve the spacing and limit it to the remaining space.
@@ -169,7 +169,7 @@ impl<'a> StackLayouter<'a> {
     }
 
     /// Layout an arbitrary block.
-    pub fn layout_block(
+    fn layout_block(
         &mut self,
         world: Tracked<dyn World>,
         block: &Content,
@@ -223,7 +223,7 @@ impl<'a> StackLayouter<'a> {
     }
 
     /// Advance to the next region.
-    pub fn finish_region(&mut self) {
+    fn finish_region(&mut self) {
         // Determine the size of the stack in this region dependening on whether
         // the region expands.
         let used = self.used.to_axes(self.axis);
@@ -279,7 +279,7 @@ impl<'a> StackLayouter<'a> {
     }
 
     /// Finish layouting and return the resulting frames.
-    pub fn finish(mut self) -> Vec<Frame> {
+    fn finish(mut self) -> Vec<Frame> {
         self.finish_region();
         self.finished
     }
@@ -287,7 +287,7 @@ impl<'a> StackLayouter<'a> {
 
 /// A container with a main and cross component.
 #[derive(Default, Copy, Clone, Eq, PartialEq, Hash)]
-pub struct Gen<T> {
+struct Gen<T> {
     /// The main component.
     pub cross: T,
     /// The cross component.
@@ -296,12 +296,12 @@ pub struct Gen<T> {
 
 impl<T> Gen<T> {
     /// Create a new instance from the two components.
-    pub const fn new(cross: T, main: T) -> Self {
+    const fn new(cross: T, main: T) -> Self {
         Self { cross, main }
     }
 
     /// Convert to the specific representation, given the current main axis.
-    pub fn to_axes(self, main: Axis) -> Axes<T> {
+    fn to_axes(self, main: Axis) -> Axes<T> {
         match main {
             Axis::X => Axes::new(self.main, self.cross),
             Axis::Y => Axes::new(self.cross, self.main),
@@ -311,12 +311,12 @@ impl<T> Gen<T> {
 
 impl Gen<Abs> {
     /// The zero value.
-    pub fn zero() -> Self {
+    fn zero() -> Self {
         Self { cross: Abs::zero(), main: Abs::zero() }
     }
 
     /// Convert to a point.
-    pub fn to_point(self, main: Axis) -> Point {
+    fn to_point(self, main: Axis) -> Point {
         self.to_axes(main).to_point()
     }
 }
diff --git a/library/src/lib.rs b/library/src/lib.rs
index ed332a06..7ffb490c 100644
--- a/library/src/lib.rs
+++ b/library/src/lib.rs
@@ -1,19 +1,19 @@
 //! Typst's standard library.
 
+pub mod base;
 pub mod graphics;
 pub mod layout;
 pub mod math;
 pub mod prelude;
 pub mod structure;
 pub mod text;
-pub mod utility;
 
 mod ext;
 
 use typst::geom::{Align, Color, Dir, GenAlign};
 use typst::model::{LangItems, Node, Scope, StyleMap};
 
-use self::layout::Layout;
+use self::layout::LayoutRoot;
 
 /// Construct the standard library scope.
 pub fn scope() -> Scope {
@@ -83,32 +83,32 @@ pub fn scope() -> Scope {
     std.define("NN", "ℕ");
     std.define("RR", "ℝ");
 
-    // Utility.
-    std.def_fn("type", utility::type_);
-    std.def_fn("assert", utility::assert);
-    std.def_fn("eval", utility::eval);
-    std.def_fn("int", utility::int);
-    std.def_fn("float", utility::float);
-    std.def_fn("abs", utility::abs);
-    std.def_fn("min", utility::min);
-    std.def_fn("max", utility::max);
-    std.def_fn("even", utility::even);
-    std.def_fn("odd", utility::odd);
-    std.def_fn("mod", utility::mod_);
-    std.def_fn("range", utility::range);
-    std.def_fn("luma", utility::luma);
-    std.def_fn("rgb", utility::rgb);
-    std.def_fn("cmyk", utility::cmyk);
-    std.def_fn("repr", utility::repr);
-    std.def_fn("str", utility::str);
-    std.def_fn("regex", utility::regex);
-    std.def_fn("letter", utility::letter);
-    std.def_fn("roman", utility::roman);
-    std.def_fn("symbol", utility::symbol);
-    std.def_fn("lorem", utility::lorem);
-    std.def_fn("csv", utility::csv);
-    std.def_fn("json", utility::json);
-    std.def_fn("xml", utility::xml);
+    // Base.
+    std.def_fn("type", base::type_);
+    std.def_fn("assert", base::assert);
+    std.def_fn("eval", base::eval);
+    std.def_fn("int", base::int);
+    std.def_fn("float", base::float);
+    std.def_fn("abs", base::abs);
+    std.def_fn("min", base::min);
+    std.def_fn("max", base::max);
+    std.def_fn("even", base::even);
+    std.def_fn("odd", base::odd);
+    std.def_fn("mod", base::mod_);
+    std.def_fn("range", base::range);
+    std.def_fn("luma", base::luma);
+    std.def_fn("rgb", base::rgb);
+    std.def_fn("cmyk", base::cmyk);
+    std.def_fn("repr", base::repr);
+    std.def_fn("str", base::str);
+    std.def_fn("regex", base::regex);
+    std.def_fn("letter", base::letter);
+    std.def_fn("roman", base::roman);
+    std.def_fn("symbol", base::symbol);
+    std.def_fn("lorem", base::lorem);
+    std.def_fn("csv", base::csv);
+    std.def_fn("json", base::json);
+    std.def_fn("xml", base::xml);
 
     // Predefined colors.
     std.define("black", Color::BLACK);
@@ -155,7 +155,7 @@ pub fn styles() -> StyleMap {
 /// Construct the standard lang item mapping.
 pub fn items() -> LangItems {
     LangItems {
-        root: |world, content| content.layout(world),
+        root: |world, content| content.layout_root(world),
         em: |styles| styles.get(text::TextNode::SIZE),
         dir: |styles| styles.get(text::TextNode::DIR),
         space: || text::SpaceNode.pack(),
diff --git a/library/src/math/tex.rs b/library/src/math/tex.rs
index 7b40aa2b..7de68d7b 100644
--- a/library/src/math/tex.rs
+++ b/library/src/math/tex.rs
@@ -5,7 +5,7 @@ use rex::parser::color::RGBA;
 use rex::render::{Backend, Cursor, Renderer};
 use typst::font::Font;
 
-use super::*;
+use super::MathNode;
 use crate::prelude::*;
 use crate::text::{variant, LinebreakNode, SpaceNode, TextNode};
 
diff --git a/library/src/prelude.rs b/library/src/prelude.rs
index 0c3b0eb1..11095c67 100644
--- a/library/src/prelude.rs
+++ b/library/src/prelude.rs
@@ -1,27 +1,20 @@
 //! Helpful imports for creating library functionality.
 
 pub use std::fmt::{self, Debug, Formatter};
-pub use std::hash::Hash;
-pub use std::io;
 pub use std::num::NonZeroUsize;
-pub use std::sync::Arc;
 
 pub use comemo::Tracked;
-pub use typst::diag::{
-    bail, error, with_alternative, At, FileError, FileResult, SourceError, SourceResult,
-    StrResult,
-};
+pub use typst::diag::{bail, error, with_alternative, At, SourceResult, StrResult};
 pub use typst::frame::*;
 pub use typst::geom::*;
 pub use typst::model::{
-    array, capability, castable, dict, dynamic, format_str, node, Args, Array,
-    Capability, Cast, Content, Dict, Dynamic, Fold, Func, Key, LangItems, Node, Resolve,
-    Scope, Selector, Show, Smart, Str, StyleChain, StyleMap, StyleVec, Value, Vm,
+    array, capability, castable, dict, dynamic, format_str, node, Args, Array, Cast,
+    Content, Dict, Fold, Func, Key, Node, Resolve, Scope, Selector, Show, Smart, Str,
+    StyleChain, StyleMap, StyleVec, Value, Vm,
 };
 pub use typst::syntax::{Span, Spanned};
 pub use typst::util::{format_eco, EcoString};
 pub use typst::World;
 
 pub use super::ext::{ContentExt, StyleMapExt};
-pub use super::layout::{Layout, LayoutBlock, LayoutInline, Regions};
-pub use super::text::{FallbackList, TextNode};
+pub use super::layout::{LayoutBlock, LayoutInline, Regions};
diff --git a/library/src/structure/list.rs b/library/src/structure/list.rs
index 2015f19b..d461ef2d 100644
--- a/library/src/structure/list.rs
+++ b/library/src/structure/list.rs
@@ -1,9 +1,9 @@
 use unscanny::Scanner;
 
+use crate::base::Numbering;
 use crate::layout::{BlockSpacing, GridNode, HNode, TrackSizing};
 use crate::prelude::*;
-use crate::text::{ParNode, SpaceNode};
-use crate::utility::Numbering;
+use crate::text::{ParNode, SpaceNode, TextNode};
 
 /// An unordered (bulleted) or ordered (numbered) list.
 #[derive(Debug, Hash)]
diff --git a/library/src/structure/reference.rs b/library/src/structure/reference.rs
index 632ecba5..56f8b8e3 100644
--- a/library/src/structure/reference.rs
+++ b/library/src/structure/reference.rs
@@ -1,4 +1,5 @@
 use crate::prelude::*;
+use crate::text::TextNode;
 
 /// A reference to a label.
 #[derive(Debug, Hash)]
diff --git a/library/src/text/deco.rs b/library/src/text/deco.rs
index cd3acef5..aaf6cfa8 100644
--- a/library/src/text/deco.rs
+++ b/library/src/text/deco.rs
@@ -70,7 +70,7 @@ impl<const L: DecoLine> Show for DecoNode<L> {
 ///
 /// For more details, see [`DecoNode`].
 #[derive(Debug, Clone, Eq, PartialEq, Hash)]
-pub struct Decoration {
+pub(super) struct Decoration {
     pub line: DecoLine,
     pub stroke: PartialStroke<Abs>,
     pub offset: Smart<Abs>,
@@ -91,7 +91,7 @@ pub const STRIKETHROUGH: DecoLine = 1;
 pub const OVERLINE: DecoLine = 2;
 
 /// Add line decorations to a single run of shaped text.
-pub fn decorate(
+pub(super) fn decorate(
     frame: &mut Frame,
     deco: &Decoration,
     text: &Text,
diff --git a/library/src/text/mod.rs b/library/src/text/mod.rs
index d793f614..61edacbe 100644
--- a/library/src/text/mod.rs
+++ b/library/src/text/mod.rs
@@ -11,7 +11,6 @@ mod shift;
 pub use deco::*;
 pub use link::*;
 pub use par::*;
-pub use quotes::*;
 pub use raw::*;
 pub use shaping::*;
 pub use shift::*;
@@ -22,6 +21,7 @@ use rustybuzz::Tag;
 use typst::font::{FontMetrics, FontStretch, FontStyle, FontWeight, VerticalFontMetric};
 use typst::util::EcoString;
 
+use self::quotes::*;
 use crate::prelude::*;
 
 /// A single run of text with the same style.
@@ -107,22 +107,22 @@ impl TextNode {
 
     /// Whether the font weight should be increased by 300.
     #[property(skip, fold)]
-    pub const BOLD: Toggle = false;
+    pub(super) const BOLD: Toggle = false;
     /// Whether the font style should be inverted.
     #[property(skip, fold)]
-    pub const ITALIC: Toggle = false;
+    pub(super) const ITALIC: Toggle = false;
     /// A case transformation that should be applied to the text.
     #[property(skip)]
-    pub const CASE: Option<Case> = None;
+    pub(super) const CASE: Option<Case> = None;
     /// Whether small capital glyphs should be used. ("smcp")
     #[property(skip)]
-    pub const SMALLCAPS: bool = false;
+    pub(super) const SMALLCAPS: bool = false;
     /// A destination the text should be linked to.
     #[property(skip, referenced)]
-    pub const LINK: Option<Destination> = None;
+    pub(crate) const LINK: Option<Destination> = None;
     /// Decorative lines.
     #[property(skip, fold)]
-    pub const DECO: Decoration = vec![];
+    pub(super) const DECO: Decoration = vec![];
 
     fn construct(_: &mut Vm, args: &mut Args) -> SourceResult<Content> {
         // The text constructor is special: It doesn't create a text node.
diff --git a/library/src/text/quotes.rs b/library/src/text/quotes.rs
index ab4d3f9d..af10de46 100644
--- a/library/src/text/quotes.rs
+++ b/library/src/text/quotes.rs
@@ -4,7 +4,7 @@ use super::{Lang, Region};
 
 /// State machine for smart quote subtitution.
 #[derive(Debug, Clone)]
-pub struct Quoter {
+pub(super) struct Quoter {
     /// How many quotes have been opened.
     quote_depth: usize,
     /// Whether an opening quote might follow.
@@ -68,7 +68,7 @@ fn is_opening_bracket(c: char) -> bool {
 }
 
 /// Decides which quotes to subtitute smart quotes with.
-pub struct Quotes<'s> {
+pub(super) struct Quotes<'s> {
     /// The opening single quote.
     pub single_open: &'s str,
     /// The closing single quote.
diff --git a/library/src/text/shaping.rs b/library/src/text/shaping.rs
index 32143862..bab02eca 100644
--- a/library/src/text/shaping.rs
+++ b/library/src/text/shaping.rs
@@ -13,7 +13,7 @@ use crate::prelude::*;
 /// This type contains owned or borrowed shaped text runs, which can be
 /// measured, used to reshape substrings more quickly and converted into a
 /// frame.
-pub struct ShapedText<'a> {
+pub(super) struct ShapedText<'a> {
     /// The text that was shaped.
     pub text: &'a str,
     /// The text direction.
@@ -32,7 +32,7 @@ pub struct ShapedText<'a> {
 
 /// A single glyph resulting from shaping.
 #[derive(Debug, Clone)]
-pub struct ShapedGlyph {
+pub(super) struct ShapedGlyph {
     /// The font the glyph is contained in.
     pub font: Font,
     /// The glyph's index in the font.
@@ -318,7 +318,7 @@ struct ShapingContext<'a> {
 }
 
 /// Shape text into [`ShapedText`].
-pub fn shape<'a>(
+pub(super) fn shape<'a>(
     world: Tracked<dyn World>,
     text: &'a str,
     styles: StyleChain<'a>,
@@ -534,7 +534,7 @@ fn nbsp_delta(font: &Font) -> Option<Em> {
     Some(font.advance(nbsp)? - font.advance(space)?)
 }
 
-/// Resolve the font variant with `BOLD` and `ITALIC` factored in.
+/// Resolve the font variant.
 pub fn variant(styles: StyleChain) -> FontVariant {
     let mut variant = FontVariant::new(
         styles.get(TextNode::STYLE),
diff --git a/library/src/text/shift.rs b/library/src/text/shift.rs
index e5f142dd..856d0f96 100644
--- a/library/src/text/shift.rs
+++ b/library/src/text/shift.rs
@@ -11,7 +11,7 @@ use crate::prelude::*;
 /// codepoints. If that fails, we fall back to rendering shrunk normal letters
 /// in a raised way.
 #[derive(Debug, Hash)]
-pub struct ShiftNode<const S: ScriptKind>(pub Content);
+pub struct ShiftNode<const S: ShiftKind>(pub Content);
 
 /// Shift the text into superscript.
 pub type SuperNode = ShiftNode<SUPERSCRIPT>;
@@ -20,7 +20,7 @@ pub type SuperNode = ShiftNode<SUPERSCRIPT>;
 pub type SubNode = ShiftNode<SUBSCRIPT>;
 
 #[node(Show)]
-impl<const S: ScriptKind> ShiftNode<S> {
+impl<const S: ShiftKind> ShiftNode<S> {
     /// Whether to prefer the dedicated sub- and superscript characters of the
     /// font.
     pub const TYPOGRAPHIC: bool = true;
@@ -35,7 +35,7 @@ impl<const S: ScriptKind> ShiftNode<S> {
     }
 }
 
-impl<const S: ScriptKind> Show for ShiftNode<S> {
+impl<const S: ShiftKind> Show for ShiftNode<S> {
     fn unguard_parts(&self, _: Selector) -> Content {
         Self(self.0.clone()).pack()
     }
@@ -72,7 +72,7 @@ impl<const S: ScriptKind> Show for ShiftNode<S> {
 
 /// Find and transform the text contained in `content` to the given script kind
 /// if and only if it only consists of `Text`, `Space`, and `Empty` leaf nodes.
-fn search_text(content: &Content, mode: ScriptKind) -> Option<EcoString> {
+fn search_text(content: &Content, mode: ShiftKind) -> Option<EcoString> {
     if content.is_empty() {
         Some(EcoString::new())
     } else if content.is::<SpaceNode>() {
@@ -114,7 +114,7 @@ fn is_shapable(world: Tracked<dyn World>, text: &str, styles: StyleChain) -> boo
 
 /// Convert a string to sub- or superscript codepoints if all characters
 /// can be mapped to such a codepoint.
-fn convert_script(text: &str, mode: ScriptKind) -> Option<EcoString> {
+fn convert_script(text: &str, mode: ShiftKind) -> Option<EcoString> {
     let mut result = EcoString::with_capacity(text.len());
     let converter = match mode {
         SUPERSCRIPT => to_superscript_codepoint,
@@ -179,10 +179,10 @@ fn to_subscript_codepoint(c: char) -> Option<char> {
 }
 
 /// A category of script.
-pub type ScriptKind = usize;
+pub type ShiftKind = usize;
 
 /// Text that is rendered smaller and raised, also known as superior.
-const SUPERSCRIPT: ScriptKind = 0;
+const SUPERSCRIPT: ShiftKind = 0;
 
 /// Text that is rendered smaller and lowered, also known as inferior.
-const SUBSCRIPT: ScriptKind = 1;
+const SUBSCRIPT: ShiftKind = 1;
diff --git a/tests/ref/utility/blind.png b/tests/ref/base/blind.png
index e972567e..e972567e 100644
--- a/tests/ref/utility/blind.png
+++ b/tests/ref/base/blind.png
diff --git a/tests/ref/utility/collection.png b/tests/ref/base/collection.png
index e93e2beb..e93e2beb 100644
--- a/tests/ref/utility/collection.png
+++ b/tests/ref/base/collection.png
diff --git a/tests/ref/utility/color.png b/tests/ref/base/color.png
index 496013bb..496013bb 100644
--- a/tests/ref/utility/color.png
+++ b/tests/ref/base/color.png
diff --git a/tests/ref/utility/data.png b/tests/ref/base/data.png
index 69e0ae38..69e0ae38 100644
--- a/tests/ref/utility/data.png
+++ b/tests/ref/base/data.png
diff --git a/tests/ref/utility/eval.png b/tests/ref/base/eval.png
index 38c1d64e..38c1d64e 100644
--- a/tests/ref/utility/eval.png
+++ b/tests/ref/base/eval.png
diff --git a/tests/ref/utility/numbering.png b/tests/ref/base/numbering.png
index d4d575d9..d4d575d9 100644
--- a/tests/ref/utility/numbering.png
+++ b/tests/ref/base/numbering.png
diff --git a/tests/ref/utility/string.png b/tests/ref/base/string.png
index 02184316..02184316 100644
--- a/tests/ref/utility/string.png
+++ b/tests/ref/base/string.png
diff --git a/tests/ref/math/basic.png b/tests/ref/layout/math.png
index 902354df..902354df 100644
--- a/tests/ref/math/basic.png
+++ b/tests/ref/layout/math.png
diff --git a/tests/ref/text/basic.png b/tests/ref/text/plain.png
index bfdf47a2..bfdf47a2 100644
--- a/tests/ref/text/basic.png
+++ b/tests/ref/text/plain.png
diff --git a/tests/src/benches.rs b/tests/src/benches.rs
index 3af2db6e..e3c276bc 100644
--- a/tests/src/benches.rs
+++ b/tests/src/benches.rs
@@ -2,13 +2,12 @@ use std::path::{Path, PathBuf};
 
 use comemo::{Prehashed, Track, Tracked};
 use iai::{black_box, main, Iai};
-use unscanny::Scanner;
-
 use typst::diag::{FileError, FileResult};
 use typst::font::{Font, FontBook};
 use typst::syntax::{Source, SourceId, TokenMode, Tokens};
 use typst::util::Buffer;
 use typst::{Config, World};
+use unscanny::Scanner;
 
 const TEXT: &str = include_str!("../typ/benches/bench.typ");
 const FONT: &[u8] = include_bytes!("../../fonts/IBMPlexSans-Regular.ttf");
diff --git a/tests/src/tests.rs b/tests/src/tests.rs
index 620c1e7b..54afd034 100644
--- a/tests/src/tests.rs
+++ b/tests/src/tests.rs
@@ -11,9 +11,6 @@ use comemo::Prehashed;
 use elsa::FrozenVec;
 use once_cell::unsync::OnceCell;
 use tiny_skia as sk;
-use unscanny::Scanner;
-use walkdir::WalkDir;
-
 use typst::diag::{bail, FileError, FileResult};
 use typst::font::{Font, FontBook};
 use typst::frame::{Element, Frame};
@@ -24,6 +21,8 @@ use typst::util::{Buffer, PathExt};
 use typst::{Config, World};
 use typst_library::layout::PageNode;
 use typst_library::text::{TextNode, TextSize};
+use unscanny::Scanner;
+use walkdir::WalkDir;
 
 const TYP_DIR: &str = "typ";
 const REF_DIR: &str = "ref";
diff --git a/tests/typ/utility/basics.typ b/tests/typ/base/assert.typ
index 83d192c4..b0c8aafd 100644
--- a/tests/typ/utility/basics.typ
+++ b/tests/typ/base/assert.typ
@@ -1,8 +1,7 @@
-// Test basic functions.
+// Test the `assert` function.
 // Ref: false
 
 ---
-// Test the `assert` function.
 #assert(1 + 1 == 2)
 #assert(range(2, 5) == (2, 3, 4))
 #assert(not false)
diff --git a/tests/typ/utility/blind.typ b/tests/typ/base/blind.typ
index 17452dec..17452dec 100644
--- a/tests/typ/utility/blind.typ
+++ b/tests/typ/base/blind.typ
diff --git a/tests/typ/utility/math.typ b/tests/typ/base/calc.typ
index 4ccefa22..4ccefa22 100644
--- a/tests/typ/utility/math.typ
+++ b/tests/typ/base/calc.typ
diff --git a/tests/typ/utility/collection.typ b/tests/typ/base/collection.typ
index 46ff97ab..46ff97ab 100644
--- a/tests/typ/utility/collection.typ
+++ b/tests/typ/base/collection.typ
diff --git a/tests/typ/utility/color.typ b/tests/typ/base/color.typ
index 96d76063..96d76063 100644
--- a/tests/typ/utility/color.typ
+++ b/tests/typ/base/color.typ
diff --git a/tests/typ/utility/data.typ b/tests/typ/base/data.typ
index e90c1b0d..96b12ff5 100644
--- a/tests/typ/utility/data.typ
+++ b/tests/typ/base/data.typ
@@ -10,7 +10,7 @@
 #table(columns: data(0).len(), ..cells)
 
 ---
-// Error: 6-16 file not found (searched at typ/utility/nope.csv)
+// Error: 6-16 file not found (searched at typ/base/nope.csv)
 #csv("nope.csv")
 
 ---
diff --git a/tests/typ/utility/eval.typ b/tests/typ/base/eval.typ
index 86b1f0c4..86b1f0c4 100644
--- a/tests/typ/utility/eval.typ
+++ b/tests/typ/base/eval.typ
diff --git a/tests/typ/utility/string.typ b/tests/typ/base/string.typ
index 3104a3ea..3104a3ea 100644
--- a/tests/typ/utility/string.typ
+++ b/tests/typ/base/string.typ
diff --git a/tests/typ/base/type.typ b/tests/typ/base/type.typ
new file mode 100644
index 00000000..37cf8623
--- /dev/null
+++ b/tests/typ/base/type.typ
@@ -0,0 +1,7 @@
+// Test the `type` function.
+// Ref: false
+
+---
+#test(type(1), "integer")
+#test(type(ltr), "direction")
+#test(type(10 / 3), "float")
diff --git a/tests/typ/math/basic.typ b/tests/typ/layout/math.typ
index 55a853cf..55a853cf 100644
--- a/tests/typ/math/basic.typ
+++ b/tests/typ/layout/math.typ
diff --git a/tests/typ/text/basic.typ b/tests/typ/text/plain.typ
index a074a046..34a2d626 100644
--- a/tests/typ/text/basic.typ
+++ b/tests/typ/text/plain.typ
@@ -1,4 +1,4 @@
-// Test simple text.
+// Test plain text.
 
 ---
 #set page(width: 250pt, height: 120pt)