wip(syntax-highlighting): catch recursive errors and prism errors

client/src/document/code/syntax-highlight.tsx

@@ -97,12 +97,21 @@ function highlightStringSync(
  const resolvedLanguage = ALIASES.get(language) || language;
  const prismLanguage = Prism.languages[resolvedLanguage];
  if (prismLanguage) {
- return Prism.highlight(text, prismLanguage, resolvedLanguage);
+ try {
+ return Prism.highlight(text, prismLanguage, resolvedLanguage);
+ } catch {
+ console.warn("Syntax highlighting: prism error");
+ }
  }
  return;
 }
 
-async function importLanguage(language: string) {
+async function importLanguage(language: string, recursiveDepth = 0) {
+ if (recursiveDepth > 100) {
+ console.warn("Syntax highlighting: recursion error");
+ throw new Error("Syntax highlighting: recursion error");
+ }
+
  const prismLanguage = Prism.languages[language];
 
  if (!prismLanguage) {
@@ -113,7 +122,9 @@ async function importLanguage(language: string) {
  "prism-svelte"
  );
  } catch (e) {
- console.warn(`Failed to import ${language} prism language`);
+ console.warn(
+ `Syntax highlighting: failed to import ${language} prism language`
+ );
  throw e;
  }
  } else {
@@ -124,7 +135,9 @@ async function importLanguage(language: string) {
  (typeof config.require === "string"
  ? [config.require]
  : config.require
- ).map((dependency) => importLanguage(dependency))
+ ).map((dependency) =>
+ importLanguage(dependency, recursiveDepth + 1)
+ )
  );
  } catch {
  return;
@@ -135,7 +148,7 @@ async function importLanguage(language: string) {
  (typeof config.optional === "string"
  ? [config.optional]
  : config.optional
- ).map((dependency) => importLanguage(dependency))
+ ).map((dependency) => importLanguage(dependency, recursiveDepth + 1))
  );
  }
  try {
@@ -145,7 +158,9 @@ async function importLanguage(language: string) {
  `prismjs/components/prism-${language}.js`
  );
  } catch (e) {
- console.warn(`Failed to import ${language} prism language`);
+ console.warn(
+ `Syntax highlighting: failed to import ${language} prism language`
+ );
  throw e;
  }
  }