Extract typst-pdf crate

Cargo.lock

@@ -2892,22 +2892,17 @@ checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
 name = "typst"
 version = "0.9.0"
 dependencies = [
- "base64",
  "bitflags 2.4.1",
- "bytemuck",
  "comemo",
  "ecow",
- "flate2",
  "fontdb",
  "image",
  "indexmap 2.0.2",
  "kurbo",
  "lasso",
  "log",
- "miniz_oxide",
  "once_cell",
  "palette",
- "pdf-writer",
  "regex",
  "roxmltree",
  "rustybuzz",
@@ -2915,22 +2910,16 @@ dependencies = [
  "siphasher",
  "smallvec",
  "stacker",
- "subsetter",
- "svg2pdf",
  "time",
  "toml",
  "tracing",
  "ttf-parser",
  "typst-macros",
  "typst-syntax",
- "unicode-ident",
  "unicode-math-class",
- "unicode-properties",
  "unicode-segmentation",
- "unscanny",
  "usvg",
  "wasmi",
- "xmp-writer",
 ]
 
 [[package]]
@@ -2971,6 +2960,7 @@ dependencies = [
  "tracing-subscriber",
  "typst",
  "typst-library",
+ "typst-pdf",
  "typst-render",
  "typst-svg",
  "ureq",
@@ -3062,6 +3052,28 @@ dependencies = [
  "syn 2.0.38",
 ]
 
+[[package]]
+name = "typst-pdf"
+version = "0.9.0"
+dependencies = [
+ "base64",
+ "bytemuck",
+ "comemo",
+ "ecow",
+ "image",
+ "miniz_oxide",
+ "once_cell",
+ "pdf-writer",
+ "subsetter",
+ "svg2pdf",
+ "tracing",
+ "ttf-parser",
+ "typst",
+ "unicode-properties",
+ "unscanny",
+ "xmp-writer",
+]
+
 [[package]]
 name = "typst-render"
 version = "0.9.0"
@@ -3124,6 +3136,7 @@ dependencies = [
  "ttf-parser",
  "typst",
  "typst-library",
+ "typst-pdf",
  "typst-render",
  "typst-svg",
  "unscanny",

Cargo.toml

@@ -17,8 +17,12 @@ keywords = ["typst"]
 
 [workspace.dependencies]
 typst = { path = "crates/typst" }
+typst-cli = { path = "crates/typst-cli" }
+typst-docs = { path = "crates/typst-docs" }
+typst-ide = { path = "crates/typst-ide" }
 typst-library = { path = "crates/typst-library" }
 typst-macros = { path = "crates/typst-macros" }
+typst-pdf = { path = "crates/typst-pdf" }
 typst-render = { path = "crates/typst-render" }
 typst-svg = { path = "crates/typst-svg" }
 typst-syntax = { path = "crates/typst-syntax" }
@@ -86,6 +90,7 @@ serde_json = "1"
 serde_yaml = "0.9"
 siphasher = "0.3"
 smallvec = { version = "1.11.1", features = ["union", "const_generics", "const_new"] }
+stacker = "0.1.15"
 subsetter = "0.1.1"
 svg2pdf = "0.9"
 syn = { version = "2", features = ["full", "extra-traits"] }

crates/typst-cli/Cargo.toml

@@ -22,6 +22,7 @@ doc = false
 [dependencies]
 typst = { workspace = true }
 typst-library = { workspace = true }
+typst-pdf = { workspace = true }
 typst-render = { workspace = true }
 typst-svg = { workspace = true }
 chrono = { workspace = true }

crates/typst-cli/src/compile.rs

@@ -153,7 +153,7 @@ fn export_pdf(
     world: &SystemWorld,
 ) -> StrResult<()> {
     let ident = world.input().to_string_lossy();
-    let buffer = typst::export::pdf(document, Some(&ident), now());
+    let buffer = typst_pdf::pdf(document, Some(&ident), now());
     let output = command.output();
     fs::write(output, buffer)
         .map_err(|err| eco_format!("failed to write PDF file ({err})"))?;

crates/typst-library/src/meta/numbering.rs

@@ -2,7 +2,7 @@ use std::str::FromStr;
 
 use chinese_number::{ChineseCase, ChineseCountMethod, ChineseVariant, NumberToChinese};
 use ecow::EcoVec;
-use typst::export::{PdfPageLabel, PdfPageLabelStyle};
+use typst::doc::{PdfPageLabel, PdfPageLabelStyle};
 
 use crate::prelude::*;
 use crate::text::Case;

crates/typst-pdf/Cargo.toml

@@ -0,0 +1,34 @@
+[package]
+name = "typst-pdf"
+description = "PDF exporter for Typst."
+version.workspace = true
+rust-version.workspace = true
+authors.workspace = true
+edition.workspace = true
+homepage.workspace = true
+repository.workspace = true
+license.workspace = true
+categories.workspace = true
+keywords.workspace = true
+
+[lib]
+doctest = false
+bench = false
+
+[dependencies]
+typst = { workspace = true }
+base64 = { workspace = true }
+bytemuck = { workspace = true }
+comemo = { workspace = true }
+ecow = { workspace = true}
+image = { workspace = true }
+miniz_oxide = { workspace = true }
+once_cell = { workspace = true }
+pdf-writer = { workspace = true }
+subsetter = { workspace = true }
+svg2pdf = { workspace = true }
+tracing = { workspace = true }
+ttf-parser = { workspace = true }
+unicode-properties = { workspace = true }
+unscanny = { workspace = true }
+xmp-writer = { workspace = true }

crates/typst-pdf/src/color.rs

@@ -1,10 +1,10 @@
 use once_cell::sync::Lazy;
 use pdf_writer::types::DeviceNSubtype;
 use pdf_writer::{writers, Chunk, Dict, Filter, Name, Ref};
+use typst::geom::{Color, ColorSpace, Paint};
 
-use super::page::{PageContext, Transforms};
-use crate::export::pdf::deflate;
-use crate::geom::{Color, ColorSpace, Paint};
+use crate::deflate;
+use crate::page::{PageContext, Transforms};
 
 // The names of the color spaces.
 pub const SRGB: Name<'static> = Name(b"srgb");

crates/typst-pdf/src/font.rs

@@ -5,11 +5,11 @@ use ecow::{eco_format, EcoString};
 use pdf_writer::types::{CidFontType, FontFlags, SystemInfo, UnicodeCmap};
 use pdf_writer::{Filter, Finish, Name, Rect, Str};
 use ttf_parser::{name_id, GlyphId, Tag};
+use typst::font::Font;
+use typst::util::SliceExt;
 use unicode_properties::{GeneralCategory, UnicodeGeneralCategory};
 
-use super::{deflate, EmExt, PdfContext};
-use crate::font::Font;
-use crate::util::SliceExt;
+use crate::{deflate, EmExt, PdfContext};
 
 const CFF: Tag = Tag::from_bytes(b"CFF ");
 const CFF2: Tag = Tag::from_bytes(b"CFF2");
@@ -187,7 +187,7 @@ fn subset_font(font: &Font, glyphs: &[u16]) -> Arc<Vec<u8>> {
 fn subset_tag(glyphs: &BTreeMap<u16, EcoString>) -> EcoString {
     const LEN: usize = 6;
     const BASE: u128 = 26;
-    let mut hash = crate::util::hash128(&glyphs);
+    let mut hash = typst::util::hash128(&glyphs);
     let mut letter = [b'A'; LEN];
     for l in letter.iter_mut() {
         *l = b'A' + (hash % BASE) as u8;

crates/typst-pdf/src/gradient.rs

@@ -6,16 +6,15 @@ use pdf_writer::types::FunctionShadingType;
 use pdf_writer::writers::StreamShadingType;
 use pdf_writer::{types::ColorSpaceOperand, Name};
 use pdf_writer::{Filter, Finish, Ref};
-
-use super::color::{ColorSpaceExt, PaintEncode, QuantizedColor};
-use super::page::{PageContext, Transforms};
-use super::{AbsExt, PdfContext};
-use crate::export::pdf::deflate;
-use crate::geom::{
+use typst::geom::{
     Abs, Angle, Color, ColorSpace, ConicGradient, Gradient, Numeric, Point, Quadrant,
     Ratio, Relative, Transform, WeightedColor,
 };
 
+use crate::color::{ColorSpaceExt, PaintEncode, QuantizedColor};
+use crate::page::{PageContext, Transforms};
+use crate::{deflate, AbsExt, PdfContext};
+
 /// A unique-transform-aspect-ratio combination that will be encoded into the
 /// PDF.
 #[derive(Debug, Clone, Eq, PartialEq, Hash)]

crates/typst-pdf/src/image.rs

@@ -4,10 +4,10 @@ use std::sync::Arc;
 
 use image::{DynamicImage, GenericImageView, Rgba};
 use pdf_writer::{Chunk, Filter, Finish, Ref};
+use typst::geom::ColorSpace;
+use typst::image::{ImageKind, RasterFormat, RasterImage, SvgImage};
 
-use super::{deflate, PdfContext};
-use crate::geom::ColorSpace;
-use crate::image::{ImageKind, RasterFormat, RasterImage, SvgImage};
+use crate::{deflate, PdfContext};
 
 /// Embed all used images into the PDF.
 #[tracing::instrument(skip_all)]

crates/typst-pdf/src/lib.rs

@@ -8,31 +8,26 @@ mod image;
 mod outline;
 mod page;
 
-pub use self::color::{ColorEncode, ColorSpaces};
-pub use self::page::{PdfPageLabel, PdfPageLabelStyle};
-
 use std::cmp::Eq;
 use std::collections::{BTreeMap, HashMap};
 use std::hash::Hash;
-use std::num::NonZeroUsize;
 
 use base64::Engine;
 use ecow::{eco_format, EcoString};
 use pdf_writer::types::Direction;
-use pdf_writer::writers::PageLabel;
 use pdf_writer::{Finish, Name, Pdf, Ref, TextStr};
+use typst::doc::{Document, Lang};
+use typst::eval::Datetime;
+use typst::font::Font;
+use typst::geom::{Abs, Dir, Em};
+use typst::image::Image;
+use typst::model::Introspector;
 use xmp_writer::{DateTime, LangId, RenditionClass, Timezone, XmpWriter};
 
-use self::gradient::PdfGradient;
-use self::page::Page;
-use crate::doc::{Document, Lang};
-use crate::eval::Datetime;
-use crate::font::Font;
-use crate::geom::{Abs, Dir, Em};
-use crate::image::Image;
-use crate::model::Introspector;
-
-use extg::ExtGState;
+use crate::color::ColorSpaces;
+use crate::extg::ExtGState;
+use crate::gradient::PdfGradient;
+use crate::page::Page;
 
 /// Export a document into a PDF file.
 ///
@@ -161,7 +156,7 @@ fn write_catalog(ctx: &mut PdfContext, ident: Option<&str>, timestamp: Option<Da
     let outline_root_id = outline::write_outline(ctx);
 
     // Write the page labels.
-    let page_labels = write_page_labels(ctx);
+    let page_labels = page::write_page_labels(ctx);
 
     // Write the document information.
     let mut info = ctx.pdf.document_info(ctx.alloc.bump());
@@ -256,55 +251,6 @@ fn write_catalog(ctx: &mut PdfContext, ident: Option<&str>, timestamp: Option<Da
     }
 }
 
-/// Write the page labels.
-#[tracing::instrument(skip_all)]
-fn write_page_labels(ctx: &mut PdfContext) -> Vec<(NonZeroUsize, Ref)> {
-    let mut result = vec![];
-    let mut prev: Option<&PdfPageLabel> = None;
-
-    for (i, page) in ctx.pages.iter().enumerate() {
-        let nr = NonZeroUsize::new(1 + i).unwrap();
-        let Some(label) = &page.label else { continue };
-
-        // Don't create a label if neither style nor prefix are specified.
-        if label.prefix.is_none() && label.style.is_none() {
-            continue;
-        }
-
-        if let Some(pre) = prev {
-            if label.prefix == pre.prefix
-                && label.style == pre.style
-                && label.offset == pre.offset.map(|n| n.saturating_add(1))
-            {
-                prev = Some(label);
-                continue;
-            }
-        }
-
-        let id = ctx.alloc.bump();
-        let mut entry = ctx.pdf.indirect(id).start::<PageLabel>();
-
-        // Only add what is actually provided. Don't add empty prefix string if
-        // it wasn't given for example.
-        if let Some(prefix) = &label.prefix {
-            entry.prefix(TextStr(prefix));
-        }
-
-        if let Some(style) = label.style {
-            entry.style(style.into());
-        }
-
-        if let Some(offset) = label.offset {
-            entry.offset(offset.get() as i32);
-        }
-
-        result.push((nr, id));
-        prev = Some(label);
-    }
-
-    result
-}
-
 /// Compress data with the DEFLATE algorithm.
 #[tracing::instrument(skip_all)]
 fn deflate(data: &[u8]) -> Vec<u8> {
@@ -315,7 +261,7 @@ fn deflate(data: &[u8]) -> Vec<u8> {
 /// Create a base64-encoded hash of the value.
 fn hash_base64<T: Hash>(value: &T) -> String {
     base64::engine::general_purpose::STANDARD
-        .encode(crate::util::hash128(value).to_be_bytes())
+        .encode(typst::util::hash128(value).to_be_bytes())
 }
 
 /// Converts a datetime to a pdf-writer date.

crates/typst-pdf/src/outline.rs

@@ -1,10 +1,11 @@
 use std::num::NonZeroUsize;
 
 use pdf_writer::{Finish, Ref, TextStr};
+use typst::eval::item;
+use typst::geom::{Abs, Smart};
+use typst::model::Content;
 
-use super::{AbsExt, PdfContext};
-use crate::geom::{Abs, Smart};
-use crate::model::Content;
+use crate::{AbsExt, PdfContext};
 
 /// Construct the outline for the document.
 #[tracing::instrument(skip_all)]

crates/typst-pdf/src/page.rs

@@ -1,24 +1,27 @@
 use std::num::NonZeroUsize;
 use std::sync::Arc;
 
-use ecow::{eco_format, EcoString};
+use ecow::eco_format;
 use pdf_writer::types::{
     ActionType, AnnotationType, ColorSpaceOperand, LineCapStyle, LineJoinStyle,
     NumberingStyle,
 };
-use pdf_writer::{Content, Filter, Finish, Name, Rect, Ref, Str};
-
-use super::color::PaintEncode;
-use super::extg::ExtGState;
-use super::{deflate, AbsExt, EmExt, PdfContext};
-use crate::doc::{Destination, Frame, FrameItem, GroupItem, Meta, TextItem};
-use crate::eval::Repr;
-use crate::font::Font;
-use crate::geom::{
+use pdf_writer::writers::PageLabel;
+use pdf_writer::{Content, Filter, Finish, Name, Rect, Ref, Str, TextStr};
+use typst::doc::{
+    Destination, Frame, FrameItem, GroupItem, Meta, PdfPageLabel, PdfPageLabelStyle,
+    TextItem,
+};
+use typst::font::Font;
+use typst::geom::{
     self, Abs, Em, FixedStroke, Geometry, LineCap, LineJoin, Numeric, Paint, Point,
     Ratio, Shape, Size, Transform,
 };
-use crate::image::Image;
+use typst::image::Image;
+
+use crate::color::PaintEncode;
+use crate::extg::ExtGState;
+use crate::{deflate, AbsExt, EmExt, PdfContext};
 
 /// Construct page objects.
 #[tracing::instrument(skip_all)]
@@ -189,6 +192,55 @@ fn write_page(ctx: &mut PdfContext, i: usize) {
     ctx.pdf.stream(content_id, &data).filter(Filter::FlateDecode);
 }
 
+/// Write the page labels.
+#[tracing::instrument(skip_all)]
+pub fn write_page_labels(ctx: &mut PdfContext) -> Vec<(NonZeroUsize, Ref)> {
+    let mut result = vec![];
+    let mut prev: Option<&PdfPageLabel> = None;
+
+    for (i, page) in ctx.pages.iter().enumerate() {
+        let nr = NonZeroUsize::new(1 + i).unwrap();
+        let Some(label) = &page.label else { continue };
+
+        // Don't create a label if neither style nor prefix are specified.
+        if label.prefix.is_none() && label.style.is_none() {
+            continue;
+        }
+
+        if let Some(pre) = prev {
+            if label.prefix == pre.prefix
+                && label.style == pre.style
+                && label.offset == pre.offset.map(|n| n.saturating_add(1))
+            {
+                prev = Some(label);
+                continue;
+            }
+        }
+
+        let id = ctx.alloc.bump();
+        let mut entry = ctx.pdf.indirect(id).start::<PageLabel>();
+
+        // Only add what is actually provided. Don't add empty prefix string if
+        // it wasn't given for example.
+        if let Some(prefix) = &label.prefix {
+            entry.prefix(TextStr(prefix));
+        }
+
+        if let Some(style) = label.style {
+            entry.style(to_pdf_numbering_style(style));
+        }
+
+        if let Some(offset) = label.offset {
+            entry.offset(offset.get() as i32);
+        }
+
+        result.push((nr, id));
+        prev = Some(label);
+    }
+
+    result
+}
+
 /// Memoized version of [`deflate`] specialized for a page's content stream.
 #[comemo::memoize]
 fn deflate_content(content: &[u8]) -> Arc<Vec<u8>> {
@@ -401,10 +453,10 @@ impl PageContext<'_, '_> {
 
             self.content.set_line_width(thickness.to_f32());
             if self.state.stroke.as_ref().map(|s| &s.line_cap) != Some(line_cap) {
-                self.content.set_line_cap(line_cap.into());
+                self.content.set_line_cap(to_pdf_line_cap(*line_cap));
             }
             if self.state.stroke.as_ref().map(|s| &s.line_join) != Some(line_join) {
-                self.content.set_line_join(line_join.into());
+                self.content.set_line_join(to_pdf_line_join(*line_join));
             }
             if self.state.stroke.as_ref().map(|s| &s.dash_pattern) != Some(dash_pattern) {
                 if let Some(pattern) = dash_pattern {
@@ -680,73 +732,28 @@ fn write_link(ctx: &mut PageContext, pos: Point, dest: &Destination, size: Size)
     ctx.links.push((dest.clone(), rect));
 }
 
-impl From<&LineCap> for LineCapStyle {
-    fn from(line_cap: &LineCap) -> Self {
-        match line_cap {
-            LineCap::Butt => LineCapStyle::ButtCap,
-            LineCap::Round => LineCapStyle::RoundCap,
-            LineCap::Square => LineCapStyle::ProjectingSquareCap,
-        }
+fn to_pdf_line_cap(cap: LineCap) -> LineCapStyle {
+    match cap {
+        LineCap::Butt => LineCapStyle::ButtCap,
+        LineCap::Round => LineCapStyle::RoundCap,
+        LineCap::Square => LineCapStyle::ProjectingSquareCap,
     }
 }
 
-impl From<&LineJoin> for LineJoinStyle {
-    fn from(line_join: &LineJoin) -> Self {
-        match line_join {
-            LineJoin::Miter => LineJoinStyle::MiterJoin,
-            LineJoin::Round => LineJoinStyle::RoundJoin,
-            LineJoin::Bevel => LineJoinStyle::BevelJoin,
-        }
+fn to_pdf_line_join(join: LineJoin) -> LineJoinStyle {
+    match join {
+        LineJoin::Miter => LineJoinStyle::MiterJoin,
+        LineJoin::Round => LineJoinStyle::RoundJoin,
+        LineJoin::Bevel => LineJoinStyle::BevelJoin,
     }
 }
 
-/// Specification for a PDF page label.
-#[derive(Debug, Clone, PartialEq, Hash, Default)]
-pub struct PdfPageLabel {
-    /// Can be any string or none. Will always be prepended to the numbering style.
-    pub prefix: Option<EcoString>,
-    /// Based on the numbering pattern.
-    ///
-    /// If `None` or numbering is a function, the field will be empty.
-    pub style: Option<PdfPageLabelStyle>,
-    /// Offset for the page label start.
-    ///
-    /// Describes where to start counting from when setting a style.
-    /// (Has to be greater or equal than 1)
-    pub offset: Option<NonZeroUsize>,
-}
-
-impl Repr for PdfPageLabel {
-    fn repr(&self) -> EcoString {
-        eco_format!("{self:?}")
-    }
-}
-
-/// A PDF page label number style.
-#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
-pub enum PdfPageLabelStyle {
-    /// Decimal arabic numerals (1, 2, 3).
-    Arabic,
-    /// Lowercase roman numerals (i, ii, iii).
-    LowerRoman,
-    /// Uppercase roman numerals (I, II, III).
-    UpperRoman,
-    /// Lowercase letters (`a` to `z` for the first 26 pages,
-    /// `aa` to `zz` and so on for the next).
-    LowerAlpha,
-    /// Uppercase letters (`A` to `Z` for the first 26 pages,
-    /// `AA` to `ZZ` and so on for the next).
-    UpperAlpha,
-}
-
-impl From<PdfPageLabelStyle> for NumberingStyle {
-    fn from(value: PdfPageLabelStyle) -> Self {
-        match value {
-            PdfPageLabelStyle::Arabic => Self::Arabic,
-            PdfPageLabelStyle::LowerRoman => Self::LowerRoman,
-            PdfPageLabelStyle::UpperRoman => Self::UpperRoman,
-            PdfPageLabelStyle::LowerAlpha => Self::LowerAlpha,
-            PdfPageLabelStyle::UpperAlpha => Self::UpperAlpha,
-        }
+fn to_pdf_numbering_style(style: PdfPageLabelStyle) -> NumberingStyle {
+    match style {
+        PdfPageLabelStyle::Arabic => NumberingStyle::Arabic,
+        PdfPageLabelStyle::LowerRoman => NumberingStyle::LowerRoman,
+        PdfPageLabelStyle::UpperRoman => NumberingStyle::UpperRoman,
+        PdfPageLabelStyle::LowerAlpha => NumberingStyle::LowerAlpha,
+        PdfPageLabelStyle::UpperAlpha => NumberingStyle::UpperAlpha,
     }
 }

crates/typst/Cargo.toml

@@ -18,42 +18,31 @@ bench = false
 [dependencies]
 typst-macros = { workspace = true }
 typst-syntax = { workspace = true }
-base64 = { workspace = true }
 bitflags = { workspace = true }
-bytemuck = { workspace = true }
 comemo = { workspace = true }
 ecow = { workspace = true}
-flate2 = { workspace = true }
 fontdb = { workspace = true }
 image = { workspace = true }
 indexmap = { workspace = true }
 kurbo = { workspace = true }
 lasso = { workspace = true }
 log = { workspace = true }
-miniz_oxide = { workspace = true }
 once_cell = { workspace = true }
 palette = { workspace = true }
-pdf-writer = { workspace = true }
 regex = { workspace = true }
 roxmltree = { workspace = true }
 rustybuzz = { workspace = true }
 serde = { workspace = true }
 siphasher = { workspace = true }
 smallvec = { workspace = true }
-subsetter = { workspace = true }
-svg2pdf = { workspace = true }
 time = { workspace = true }
 toml = { workspace = true }
 tracing = { workspace = true }
 ttf-parser = { workspace = true }
-unicode-ident = { workspace = true }
 unicode-math-class = { workspace = true }
-unicode-properties = { workspace = true }
 unicode-segmentation = { workspace = true }
-unscanny = { workspace = true }
 usvg = { workspace = true }
 wasmi = { workspace = true }
-xmp-writer = { workspace = true }
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
-stacker = "0.1.15"
+stacker = { workspace = true }

crates/typst/src/doc.rs

@@ -9,7 +9,6 @@ use std::sync::Arc;
 use ecow::{eco_format, EcoString};
 
 use crate::eval::{cast, dict, ty, Datetime, Dict, Repr, Value};
-use crate::export::PdfPageLabel;
 use crate::font::Font;
 use crate::geom::{
     self, styled_rect, Abs, Axes, Color, Corners, Dir, Em, FixedAlign, FixedStroke,
@@ -835,6 +834,45 @@ impl From<Position> for Dict {
     }
 }
 
+/// Specification for a PDF page label.
+#[derive(Debug, Clone, PartialEq, Hash, Default)]
+pub struct PdfPageLabel {
+    /// Can be any string or none. Will always be prepended to the numbering style.
+    pub prefix: Option<EcoString>,
+    /// Based on the numbering pattern.
+    ///
+    /// If `None` or numbering is a function, the field will be empty.
+    pub style: Option<PdfPageLabelStyle>,
+    /// Offset for the page label start.
+    ///
+    /// Describes where to start counting from when setting a style.
+    /// (Has to be greater or equal than 1)
+    pub offset: Option<NonZeroUsize>,
+}
+
+impl Repr for PdfPageLabel {
+    fn repr(&self) -> EcoString {
+        eco_format!("{self:?}")
+    }
+}
+
+/// A PDF page label number style.
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
+pub enum PdfPageLabelStyle {
+    /// Decimal arabic numerals (1, 2, 3).
+    Arabic,
+    /// Lowercase roman numerals (i, ii, iii).
+    LowerRoman,
+    /// Uppercase roman numerals (I, II, III).
+    UpperRoman,
+    /// Lowercase letters (`a` to `z` for the first 26 pages,
+    /// `aa` to `zz` and so on for the next).
+    LowerAlpha,
+    /// Uppercase letters (`A` to `Z` for the first 26 pages,
+    /// `AA` to `ZZ` and so on for the next).
+    UpperAlpha,
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

crates/typst/src/eval/library.rs

@@ -167,8 +167,13 @@ pub fn set_lang_items(items: LangItems) {
 }
 
 /// Access a lang item.
-macro_rules! item {
+#[macro_export]
+#[doc(hidden)]
+macro_rules! __item {
     ($name:ident) => {
         $crate::eval::LANG_ITEMS.get().unwrap().$name
     };
 }
+
+#[doc(inline)]
+pub use crate::__item as item;

crates/typst/src/eval/mod.rs

@@ -55,7 +55,7 @@ pub use self::fields::fields_on;
 pub use self::func::{
     func, CapturesVisitor, Func, NativeFunc, NativeFuncData, ParamInfo,
 };
-pub use self::library::{set_lang_items, LangItems, Library};
+pub use self::library::{item, set_lang_items, LangItems, Library};
 pub use self::methods::mutable_methods_on;
 pub use self::module::Module;
 pub use self::none::NoneValue;

crates/typst/src/eval/ops.rs

@@ -6,6 +6,7 @@ use ecow::eco_format;
 
 use super::{format_str, IntoValue, Regex, Repr, Value};
 use crate::diag::{bail, StrResult};
+use crate::eval::item;
 use crate::geom::{Align, Length, Numeric, Rel, Smart, Stroke};
 use Value::*;
 

crates/typst/src/eval/value.rs

@@ -17,7 +17,7 @@ use super::{
     Version,
 };
 use crate::diag::StrResult;
-use crate::eval::Datetime;
+use crate::eval::{item, Datetime};
 use crate::geom::{Abs, Angle, Color, Em, Fr, Gradient, Length, Ratio, Rel};
 use crate::model::{Label, Styles};
 use crate::syntax::{ast, Span};

crates/typst/src/export/mod.rs

@@ -1,5 +0,0 @@
-//! Exporting into external formats.
-
-mod pdf;
-
-pub use self::pdf::{pdf, PdfPageLabel, PdfPageLabelStyle};

crates/typst/src/geom/align.rs

@@ -1,4 +1,5 @@
 use super::*;
+use crate::eval::item;
 
 /// Where to [align]($align) something along an axis.
 ///

crates/typst/src/geom/em.rs

@@ -1,4 +1,5 @@
 use super::*;
+use crate::eval::item;
 
 /// A length that is relative to the font size.
 ///

crates/typst/src/lib.rs

@@ -43,7 +43,6 @@ pub mod util;
 pub mod eval;
 pub mod diag;
 pub mod doc;
-pub mod export;
 pub mod font;
 pub mod geom;
 pub mod image;

crates/typst/src/model/realize.rs

@@ -7,6 +7,7 @@ use super::{
 };
 use crate::diag::SourceResult;
 use crate::doc::Meta;
+use crate::eval::item;
 use crate::util::hash128;
 
 /// Whether the target is affected by show rules in the given style chain.

crates/typst/src/model/selector.rs

@@ -8,8 +8,8 @@ use smallvec::SmallVec;
 use super::{Content, Element, Label, Locatable, Location};
 use crate::diag::{bail, StrResult};
 use crate::eval::{
-    cast, func, scope, ty, CastInfo, Dict, FromValue, Func, Reflect, Regex, Repr, Str,
-    Symbol, Type, Value,
+    cast, func, item, scope, ty, CastInfo, Dict, FromValue, Func, Reflect, Regex, Repr,
+    Str, Symbol, Type, Value,
 };
 use crate::util::pretty_array_like;
 

tests/Cargo.toml

@@ -9,6 +9,7 @@ publish = false
 [dev-dependencies]
 typst = { workspace = true }
 typst-library = { workspace = true }
+typst-pdf = { workspace = true }
 typst-render = { workspace = true }
 typst-svg = { workspace = true }
 clap = { workspace = true }

tests/src/tests.rs

@@ -420,7 +420,7 @@ fn test(
     let document = Document { pages: frames, ..Default::default() };
     if compare_ever {
         if let Some(pdf_path) = pdf_path {
-            let pdf_data = typst::export::pdf(
+            let pdf_data = typst_pdf::pdf(
                 &document,
                 Some(&format!("typst-test: {}", name.display())),
                 world.today(Some(0)),