Unique characters in each string: Difference between revisions

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@@ Line 302: / Line 302: @@
                 wordCount = ws.length,
                 charFreqs = charCounts(ws.join("")),
-                shared = ws.slice(1).reduce(
+                [h, ...t] = ws,
+                shared = t.reduce(
                     (a, x) => intersect(a)(new Set([...x])),
-                    new Set([...ws[0]])
+                    new Set([...h])
                 );