Add support for author array in JSON-LD. #617 (#618)

Readability.js

@@ -1380,8 +1380,19 @@ Readability.prototype = {
         } else if (typeof parsed.headline === "string") {
           metadata.title = parsed.headline.trim();
         }
-        if (parsed.author && typeof parsed.author.name === "string") {
-          metadata.byline = parsed.author.name.trim();
+        if (parsed.author) {
+          if (typeof parsed.author.name === "string") {
+            metadata.byline = parsed.author.name.trim();
+          } else if (Array.isArray(parsed.author) && parsed.author[0] && typeof parsed.author[0].name === "string") {
+            metadata.byline = parsed.author
+              .filter(function(author) {
+                return author && typeof author.name === "string";
+              })
+              .map(function(author) {
+                return author.name.trim();
+              })
+              .join(", ");
+          }
         }
         if (typeof parsed.description === "string") {
           metadata.excerpt = parsed.description.trim();

test/test-pages/aclu/expected-metadata.json

@@ -1,6 +1,6 @@
 {
   "title": "Facebook Is Tracking Me Even Though I’m Not on Facebook",
-  "byline": "By Daniel Kahn Gillmor, Senior Staff Technologist, ACLU Speech, Privacy, and Technology Project",
+  "byline": "Daniel Kahn Gillmor",
   "dir": "ltr",
   "excerpt": "Facebook collects data about people who have never even opted in. But there are ways these non-users can protect themselves.",
   "siteName": "American Civil Liberties Union",

test/test-pages/folha/expected-metadata.json

@@ -1,6 +1,6 @@
 {
   "title": "Tite diz que errou ao levar taça da Libertadores a Lula em 2012",
-  "byline": "21.dez.2018 às 10h55",
+  "byline": "Bruno (Henrique Zecchin) Rodrigues",
   "dir": null,
   "excerpt": "Na ocasião, técnico do Corinthians entregou réplica do troféu ao ex-presidente",
   "siteName": "Folha de S.Paulo",

test/test-pages/videos-2/expected-metadata.json

@@ -1,6 +1,6 @@
 {
   "title": "Screenshot : «Vape Wave», «6 Days», «Alphonse Président»…",
-  "byline": "Par Alexandre Hervaud et Jérémy Piette",
+  "byline": "Alexandre Hervaud, Jérémy Piette",
   "dir": null,
   "excerpt": "Séries, documentaires, programmes jeunesse… Retrouvez les recommandations de Libération pour savoir quoi regarder sur vos écrans cette semaine.\nPour dépasser...",
   "siteName": "Libération",