📑 Add proof, solution, exercise defaults to typst export

.changeset/curvy-geese-retire.md

@@ -0,0 +1,5 @@
+---
+"myst-to-typst": patch
+---
+
+Add exercise and solution handlers

packages/myst-to-typst/src/index.ts

@@ -3,7 +3,7 @@
 import type { VFile } from 'vfile';
 import type { GenericNode } from 'myst-common';
 import { fileError, fileWarn, toText, getMetadataTags } from 'myst-common';
 import { captionHandler, containerHandler, getDefaultCaptionSupplement } from './container.js';
 import type {
   Handler,
   ITypstSerializer,
@@ -23,6 +23,7 @@
 import { select, selectAll } from 'unist-util-select';
 import type { Admonition, Code, CrossReference, FootnoteDefinition, TabItem } from 'myst-spec-ext';
 import { tableCellHandler, tableHandler, tableRowHandler } from './table.js';
+import { proofHandlers } from './proofs.js';
 
 export type { TypstResult } from './types.js';
 
@@ -73,26 +74,6 @@
   ])
 }`;
 
-const proof = `
-#let proof(body, heading: [], kind: "proof", supplement: "Proof", labelName: none, color: blue, float: true) = {
-  let stroke = 1pt + color.lighten(90%)
-  let fill = color.lighten(90%)
-  let title
-  set figure.caption(position: top)
-  set figure(placement: none)
-  show figure.caption.where(body: heading): (it) => {
-    block(width: 100%, stroke: stroke, fill: fill, inset: 8pt, it)
-  }
-  place(auto, float: float, block(width: 100%, [
-    #figure(kind: kind, supplement: supplement, gap: 0pt, [
-      #set align(left);
-      #set figure.caption(position: bottom)
-      #block(width: 100%, fill: luma(253), stroke: stroke, inset: 8pt)[#body]
-    ], caption: heading)
-    #if(labelName != none){label(labelName)}
-  ]))
-}`;
-
 const INDENT = '  ';
 
 const linkHandler = (node: any, state: ITypstSerializer) => {
@@ -456,25 +437,6 @@
     state.renderChildren(node);
     state.write('\n]\n\n');
   },
-  proof(node: GenericNode, state) {
-    state.useMacro(proof);
-    const title = select('admonitionTitle', node);
-    const kind = node.kind || 'proof';
-    const supplement = getDefaultCaptionSupplement(kind);
-    state.write(
-      `#proof(kind: "${kind}", supplement: "${supplement}", labelName: ${node.identifier ? `"${node.identifier}"` : 'none'}`,
-    );
-    if (title) {
-      state.write(', heading: [');
-      state.renderChildren(title);
-      state.write('])[');
-    } else {
-      state.write(')[');
-    }
-    state.renderChildren(node);
-    state.write(']');
-    state.ensureNewLine();
-  },
   card(node, state) {
     if (node.url) {
       node.children?.push({ type: 'paragraph', children: [{ type: 'text', value: node.url }] });
@@ -496,6 +458,7 @@
   footer() {
     return;
   },
+  ...proofHandlers,
 };
 
 class TypstSerializer implements ITypstSerializer {

packages/myst-to-typst/src/proofs.ts

@@ -0,0 +1,55 @@
+import { type GenericNode } from 'myst-common';
+import type { Handler, ITypstSerializer } from './types.js';
+import { getDefaultCaptionSupplement } from './container.js';
+import { select } from 'unist-util-select';
+
+const proof = `
+#let proof(body, heading: [], kind: "proof", supplement: "Proof", labelName: none, color: blue, float: true) = {
+  let stroke = 1pt + color.lighten(90%)
+  let fill = color.lighten(90%)
+  let title
+  set figure.caption(position: top)
+  set figure(placement: none)
+  show figure.caption.where(body: heading): (it) => {
+    block(width: 100%, stroke: stroke, fill: fill, inset: 8pt, it)
+  }
+  place(auto, float: float, block(width: 100%, [
+    #figure(kind: kind, supplement: supplement, gap: 0pt, [
+      #set align(left);
+      #set figure.caption(position: bottom)
+      #block(width: 100%, fill: luma(253), stroke: stroke, inset: 8pt)[#body]
+    ], caption: heading)
+    #if(labelName != none){label(labelName)}
+  ]))
+}`;
+
+function writeProof(node: GenericNode, state: ITypstSerializer, kind: string) {
+  state.useMacro(proof);
+  const title = select('admonitionTitle', node);
+  const supplement = getDefaultCaptionSupplement(kind);
+  state.write(
+    `#proof(kind: "${kind}", supplement: "${supplement}", labelName: ${node.identifier ? `"${node.identifier}"` : 'none'}`,
+  );
+  if (title) {
+    state.write(', heading: [');
+    state.renderChildren(title);
+    state.write('])[\n');
+  } else {
+    state.write(')[\n');
+  }
+  state.renderChildren(node);
+  state.write(']');
+  state.ensureNewLine();
+}
+
+export const proofHandlers: Record<string, Handler> = {
+  proof(node: GenericNode, state) {
+    writeProof(node, state, node.kind || 'proof');
+  },
+  exercise(node: GenericNode, state) {
+    writeProof(node, state, 'exercise');
+  },
+  solution(node: GenericNode, state) {
+    writeProof(node, state, 'solution');
+  },
+};

packages/myst-to-typst/tests/proofs.yml

@@ -0,0 +1,16 @@
+title: myst-to-typst code
+cases:
+  - title: proof
+    mdast:
+      type: root
+      children:
+        - type: exercise
+          identifier: my-exercise
+          children:
+            - type: paragraph
+              children:
+                - type: text
+                  value: Recall...
+    typst: |-
+      #proof(kind: "exercise", supplement: "Exercise", labelName: "my-exercise")[
+      Recall...]