LEAN-6041: update citeproc generation wrappers

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@manuscripts/transform",
   "description": "ProseMirror transformer for Manuscripts applications",
-  "version": "4.5.6",
+  "version": "4.5.7-LEAN-6041.0",
   "repository": "github:Atypon-OpenSource/manuscripts-transform",
   "license": "Apache-2.0",
   "main": "dist/cjs",

src/jats/exporter/citeproc.ts

@@ -149,6 +149,7 @@ export const initJats = () => {
 const namesWrapper = (type: string) => (str: string) =>
   `<person-group person-group-type="${type}">${str}</person-group>`
 
+const authorNamesWrapper = namesWrapper('author')
 // Even though the CSL data model specifies a date type, citeproc-js processes
 // date fields and replaces their value with an object with the structure:
 // {
@@ -182,9 +183,19 @@ const getPublicationType = (item: BibliographyItemAttrs) => {
 }
 
 const wrappers = {
-  // this is a name field, so other processing is required. See the "initJats"
-  // function for more info.
-  author: namesWrapper('author'),
+  // This is a name field, so other processing is required. See the
+  // "initJats" function for more info on name rendering.
+  //
+  // When an item has neither "author" nor "editor" data, the CSL style's
+  // author-substitute rule
+  // falls back to rendering the item's "title" in this slot instead. In
+  // that case the string received here is the title, not a name, so it's
+  // routed through the "title" wrapper to produce the correct JATS title
+  // element instead of being mislabeled as a <person-group>.
+  author: (str: string, item: BibliographyItemAttrs) => {
+    const hasNames = item.author?.length || item.editor?.length
+    return hasNames ? authorNamesWrapper(str) : wrappers.title(str, item)
+  },
   // Unlike other date fields, where a formatted date string is wrapped in
   // a tag with the "iso-8601-date" attribute, the "issued" date components
   // are individually wrapped in year/month/day tags. For the time being,