Add blog authors support

prisma/migrations/20260717225516_add_blog_authors/migration.sql

@@ -0,0 +1,20 @@
+-- CreateTable
+CREATE TABLE "BlogAuthor" (
+    "id" TEXT NOT NULL,
+    "blogPostId" TEXT NOT NULL,
+    "sortOrder" INTEGER NOT NULL DEFAULT 0,
+    "type" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "website" TEXT,
+    "imageUrl" TEXT,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "BlogAuthor_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "BlogAuthor_blogPostId_sortOrder_idx" ON "BlogAuthor"("blogPostId", "sortOrder");
+
+-- AddForeignKey
+ALTER TABLE "BlogAuthor" ADD CONSTRAINT "BlogAuthor_blogPostId_fkey" FOREIGN KEY ("blogPostId") REFERENCES "BlogPost"("id") ON DELETE CASCADE ON UPDATE CASCADE;

prisma/schema.prisma

@@ -77,4 +77,20 @@ model BlogPost {
   publishedAt   DateTime?
   createdAt     DateTime @default(now())
   updatedAt     DateTime @updatedAt
+  authors       BlogAuthor[]
+}
+
+model BlogAuthor {
+  id         String   @id @default(cuid())
+  blogPostId String
+  blogPost   BlogPost @relation(fields: [blogPostId], references: [id], onDelete: Cascade)
+  sortOrder  Int      @default(0)
+  type       String
+  name       String
+  website    String?
+  imageUrl   String?
+  createdAt  DateTime @default(now())
+  updatedAt  DateTime @updatedAt
+
+  @@index([blogPostId, sortOrder])
 }

src/app/admin/page.tsx

@@ -3,7 +3,13 @@
 import { useEffect, useState, useCallback } from "react";
 import { motion, AnimatePresence } from "framer-motion";
 import { useRouter } from "next/navigation";
-import { PROJECT_SIZES, SIZE_LABELS, type ProjectSize } from "../../types";
+import {
+  BLOG_AUTHOR_TYPES,
+  PROJECT_SIZES,
+  SIZE_LABELS,
+  type BlogAuthorType,
+  type ProjectSize,
+} from "../../types";
 import { MarkdownContent } from "@/components/MarkdownContent";
 
 type Resource = "projects" | "experience" | "affiliates" | "blogs";
@@ -17,6 +23,12 @@ const RESOURCES: { key: Resource; label: string }[] = [
 
 // A record being edited; `_new` marks an unsaved draft (POST vs PUT).
 type Row = Record<string, unknown> & { id?: string; _new?: boolean };
+type BlogAuthorInput = {
+  type: BlogAuthorType;
+  name: string;
+  website: string;
+  imageUrl: string;
+};
 
 const TEMPLATES: Record<Resource, () => Row> = {
   projects: () => ({
@@ -65,6 +77,7 @@ const TEMPLATES: Record<Resource, () => Row> = {
     excerpt: "",
     coverImageUrl: "",
     content: "# New post\n\nStart writing here.",
+    authors: [],
     isPublished: true,
     publishedAt: "",
     views: 0,
@@ -89,6 +102,24 @@ function toDateTimeInput(value: unknown): string {
   return new Date(d.getTime() - d.getTimezoneOffset() * 60_000).toISOString().slice(0, 16);
 }
 
+function normalizeBlogAuthors(value: unknown): BlogAuthorInput[] {
+  if (!Array.isArray(value)) return [];
+
+  return value.map((author) => {
+    const item = author as Record<string, unknown>;
+    const type = BLOG_AUTHOR_TYPES.includes(item.type as BlogAuthorType)
+      ? (item.type as BlogAuthorType)
+      : "author";
+
+    return {
+      type,
+      name: typeof item.name === "string" ? item.name : "",
+      website: typeof item.website === "string" ? item.website : "",
+      imageUrl: typeof item.imageUrl === "string" ? item.imageUrl : "",
+    };
+  });
+}
+
 export default function AdminPage() {
   const router = useRouter();
 
@@ -158,7 +189,11 @@ export default function AdminPage() {
               res === "experience"
                 ? { ...item, fromDate: toDateInput(item.fromDate), toDate: toDateInput(item.toDate) }
                 : res === "blogs"
-                  ? { ...item, publishedAt: toDateTimeInput(item.publishedAt) }
+                  ? {
+                      ...item,
+                      publishedAt: toDateTimeInput(item.publishedAt),
+                      authors: normalizeBlogAuthors(item.authors),
+                    }
                 : item,
             )
           : [];
@@ -573,9 +608,31 @@ function slugify(value: string): string {
     .replace(/^-+|-+$/g, "");
 }
 
+function emptyAuthor(): BlogAuthorInput {
+  return {
+    type: "author",
+    name: "",
+    website: "",
+    imageUrl: "",
+  };
+}
+
 function BlogFields({ row, idx, update }: FieldProps) {
   const slug = typeof row.slug === "string" ? row.slug : "";
   const content = typeof row.content === "string" ? row.content : "";
+  const authors = normalizeBlogAuthors(row.authors);
+
+  const updateAuthors = (nextAuthors: BlogAuthorInput[]) => {
+    update(idx, "authors", nextAuthors);
+  };
+
+  const updateAuthor = (
+    authorIndex: number,
+    field: keyof BlogAuthorInput,
+    value: BlogAuthorInput[keyof BlogAuthorInput],
+  ) => {
+    updateAuthors(authors.map((author, index) => (index === authorIndex ? { ...author, [field]: value } : author)));
+  };
 
   return (
     <div className="space-y-5">
@@ -614,6 +671,94 @@ function BlogFields({ row, idx, update }: FieldProps) {
         <Toggle row={row} idx={idx} update={update} field="isPublished" label="Published" />
       </div>
 
+      <div className="space-y-3 rounded-2xl border border-white/10 bg-black/20 p-4">
+        <div className="flex flex-wrap items-center justify-between gap-3">
+          <div>
+            <p className="text-xs font-bold uppercase tracking-[0.18em] text-gray-500">Authors</p>
+            <p className="text-sm text-gray-400">Up to 5 authors shown on the cards and blog page.</p>
+          </div>
+          <button
+            type="button"
+            onClick={() => updateAuthors([...authors, emptyAuthor()])}
+            disabled={authors.length >= 5}
+            className="rounded-lg border border-white/10 bg-white/5 px-3 py-2 text-xs font-bold text-gray-200 hover:bg-white/10 disabled:cursor-not-allowed disabled:opacity-50"
+          >
+            Add author
+          </button>
+        </div>
+
+        {authors.length === 0 ? (
+          <div className="rounded-xl border border-dashed border-white/10 px-4 py-5 text-sm text-gray-500">
+            No authors yet.
+          </div>
+        ) : (
+          <div className="space-y-3">
+            {authors.map((author, authorIndex) => (
+              <div key={authorIndex} className="space-y-3 rounded-2xl border border-white/10 bg-black/20 p-4">
+                <div className="flex items-center justify-between gap-3">
+                  <p className="text-xs font-bold uppercase tracking-[0.18em] text-gray-500">
+                    Author {authorIndex + 1}
+                  </p>
+                  <button
+                    type="button"
+                    onClick={() => updateAuthors(authors.filter((_, index) => index !== authorIndex))}
+                    className="rounded-lg border border-red-500/20 bg-red-500/10 px-3 py-2 text-xs font-bold text-red-200 hover:bg-red-500/20"
+                  >
+                    Remove
+                  </button>
+                </div>
+                <div className="grid grid-cols-1 gap-4 md:grid-cols-2">
+                  <div className="space-y-1">
+                    <label className={labelCls}>Type</label>
+                    <select
+                      value={author.type}
+                      onChange={(e) => updateAuthor(authorIndex, "type", e.target.value as BlogAuthorType)}
+                      className={inputCls}
+                    >
+                      {BLOG_AUTHOR_TYPES.map((option) => (
+                        <option key={option} value={option} className="bg-[#0a0a0a]">
+                          {option}
+                        </option>
+                      ))}
+                    </select>
+                  </div>
+                  <div className="space-y-1">
+                    <label className={labelCls}>Name</label>
+                    <input
+                      type="text"
+                      value={author.name}
+                      onChange={(e) => updateAuthor(authorIndex, "name", e.target.value)}
+                      className={inputCls}
+                      placeholder="Luna"
+                    />
+                  </div>
+                  <div className="space-y-1">
+                    <label className={labelCls}>Website</label>
+                    <input
+                      type="text"
+                      value={author.website}
+                      onChange={(e) => updateAuthor(authorIndex, "website", e.target.value)}
+                      className={inputCls}
+                      placeholder="https://example.com"
+                    />
+                  </div>
+                  <div className="space-y-1">
+                    <label className={labelCls}>Image URL</label>
+                    <input
+                      type="text"
+                      value={author.imageUrl}
+                      onChange={(e) => updateAuthor(authorIndex, "imageUrl", e.target.value)}
+                      className={inputCls}
+                      placeholder="https://example.com/avatar.jpg"
+                    />
+                  </div>
+                </div>
+              </div>
+            ))}
+          </div>
+        )}
+      </div>
+
       <div className="rounded-2xl border border-white/10 bg-black/20 p-4">
         <div className="mb-3 flex items-center justify-between gap-3">
           <div>

src/app/api/admin/blogs/[id]/route.ts

@@ -2,6 +2,7 @@ import { NextResponse } from "next/server";
 import { prisma } from "@/lib/prisma";
 import { parseBlogPost } from "@/lib/dto";
 import { guard, run, readBody } from "@/lib/adminRoute";
+import { blogPostInclude } from "@/lib/blogs";
 
 type Params = { params: Promise<{ id: string }> };
 
@@ -12,7 +13,23 @@ export async function PUT(req: Request, { params }: Params) {
   return run(async () => {
     const { id } = await params;
     const data = parseBlogPost(await readBody(req));
-    const updated = await prisma.blogPost.update({ where: { id }, data });
+    const updated = await prisma.blogPost.update({
+      where: { id },
+      data: {
+        title: data.title,
+        slug: data.slug,
+        excerpt: data.excerpt,
+        coverImageUrl: data.coverImageUrl,
+        content: data.content,
+        isPublished: data.isPublished,
+        publishedAt: data.publishedAt,
+        authors: {
+          deleteMany: {},
+          create: data.authors,
+        },
+      },
+      include: blogPostInclude,
+    });
     return NextResponse.json(updated);
   });
 }

src/app/api/admin/blogs/route.ts

@@ -2,6 +2,7 @@ import { NextResponse } from "next/server";
 import { prisma } from "@/lib/prisma";
 import { parseBlogPost } from "@/lib/dto";
 import { guard, run, readBody } from "@/lib/adminRoute";
+import { blogPostInclude } from "@/lib/blogs";
 
 export async function GET() {
   const denied = await guard();
@@ -9,6 +10,7 @@ export async function GET() {
 
   return run(async () => {
     const posts = await prisma.blogPost.findMany({
+      include: blogPostInclude,
       orderBy: [{ updatedAt: "desc" }],
     });
     return NextResponse.json(posts);
@@ -21,7 +23,21 @@ export async function POST(req: Request) {
 
   return run(async () => {
     const data = parseBlogPost(await readBody(req));
-    const created = await prisma.blogPost.create({ data });
+    const created = await prisma.blogPost.create({
+      data: {
+        title: data.title,
+        slug: data.slug,
+        excerpt: data.excerpt,
+        coverImageUrl: data.coverImageUrl,
+        content: data.content,
+        isPublished: data.isPublished,
+        publishedAt: data.publishedAt,
+        authors: {
+          create: data.authors,
+        },
+      },
+      include: blogPostInclude,
+    });
     return NextResponse.json(created, { status: 201 });
   });
 }

src/app/api/blogs/[slug]/route.ts

@@ -1,6 +1,6 @@
 import { NextResponse } from "next/server";
 import { prisma } from "@/lib/prisma";
-import { toBlogPost } from "@/lib/blogs";
+import { blogPostInclude, toBlogPost } from "@/lib/blogs";
 
 type Params = { params: Promise<{ slug: string }> };
 
@@ -21,6 +21,7 @@ export async function GET(_req: Request, { params }: Params) {
     return tx.blogPost.update({
       where: { id: found.id },
       data: { views: { increment: 1 } },
+      include: blogPostInclude,
     });
   });
 

src/app/api/blogs/route.ts

@@ -1,11 +1,12 @@
 import { NextResponse } from "next/server";
 import { prisma } from "@/lib/prisma";
-import { toBlogSummary } from "@/lib/blogs";
+import { blogPostInclude, toBlogSummary } from "@/lib/blogs";
 
 export const dynamic = "force-dynamic";
 
 export async function GET() {
   const posts = await prisma.blogPost.findMany({
+    include: blogPostInclude,
     where: { isPublished: true },
     orderBy: [{ publishedAt: "desc" }, { createdAt: "desc" }],
   });

src/app/api/blogs/top/route.ts

@@ -1,11 +1,12 @@
 import { NextResponse } from "next/server";
 import { prisma } from "@/lib/prisma";
-import { toBlogSummary } from "@/lib/blogs";
+import { blogPostInclude, toBlogSummary } from "@/lib/blogs";
 
 export const dynamic = "force-dynamic";
 
 export async function GET() {
   const posts = await prisma.blogPost.findMany({
+    include: blogPostInclude,
     where: { isPublished: true },
     orderBy: [{ views: "desc" }, { publishedAt: "desc" }, { createdAt: "desc" }],
     take: 3,

src/app/blogs/[slug]/page.tsx

@@ -3,8 +3,9 @@ import { notFound } from "next/navigation";
 import { Navbar } from "@/components/Navbar";
 import { Footer } from "@/sections/Footer";
 import { MarkdownContent } from "@/components/MarkdownContent";
+import { BlogAuthorList } from "@/components/BlogAuthorList";
 import { prisma } from "@/lib/prisma";
-import { getReadingTimeMinutes } from "@/lib/blogs";
+import { blogPostInclude, getReadingTimeMinutes } from "@/lib/blogs";
 
 type Params = { params: Promise<{ slug: string }> };
 
@@ -31,6 +32,7 @@ async function getPost(slug: string) {
     return tx.blogPost.update({
       where: { id: found.id },
       data: { views: { increment: 1 } },
+      include: blogPostInclude,
     });
   });
 }
@@ -81,6 +83,7 @@ export default async function BlogDetailPage({ params }: Params) {
               <span>{post.views} views</span>
               <span>{getReadingTimeMinutes(post.content)} min read</span>
             </div>
+            {post.authors.length > 0 ? <BlogAuthorList authors={post.authors} /> : null}
           </div>
 
           <div className="pt-8">

src/app/blogs/page.tsx

@@ -3,7 +3,7 @@ import { Navbar } from "@/components/Navbar";
 import { Footer } from "@/sections/Footer";
 import { BlogCard } from "@/components/BlogCard";
 import { prisma } from "@/lib/prisma";
-import { toBlogSummary } from "@/lib/blogs";
+import { blogPostInclude, toBlogSummary } from "@/lib/blogs";
 
 export const metadata = {
   title: "Blog | Paul W. Portfolio",
@@ -14,6 +14,7 @@ export const dynamic = "force-dynamic";
 
 export default async function BlogsPage() {
   const posts = await prisma.blogPost.findMany({
+    include: blogPostInclude,
     where: { isPublished: true },
     orderBy: [{ publishedAt: "desc" }, { createdAt: "desc" }],
   });

src/components/BlogAuthorList.tsx

@@ -0,0 +1,102 @@
+type DisplayAuthor = {
+  id: string;
+  type: string;
+  name: string;
+  website?: string | null;
+  imageUrl?: string | null;
+};
+
+const ROLE_LABELS: Record<string, string> = {
+  author: "Author",
+  "co-author": "Co-author",
+  relating: "Relating",
+};
+
+function avatarFallback(name: string) {
+  return name
+    .split(/\s+/)
+    .map((part) => part[0] ?? "")
+    .join("")
+    .slice(0, 2)
+    .toUpperCase();
+}
+
+function AuthorAvatar({ author }: { author: DisplayAuthor }) {
+  if (author.imageUrl) {
+    return (
+      <img
+        src={author.imageUrl}
+        alt={author.name}
+        className="h-10 w-10 rounded-full border border-white/10 object-cover"
+      />
+    );
+  }
+
+  return (
+    <div className="flex h-10 w-10 items-center justify-center rounded-full border border-white/10 bg-white/5 text-xs font-semibold text-gray-300">
+      {avatarFallback(author.name)}
+    </div>
+  );
+}
+
+export function BlogAuthorList({ authors }: { authors: DisplayAuthor[] }) {
+  return (
+    <div className="grid gap-3 sm:grid-cols-2">
+      {authors.map((author) => {
+        const content = (
+          <div className="flex items-center gap-3 rounded-2xl border border-white/10 bg-black/20 px-4 py-3">
+            <AuthorAvatar author={author} />
+            <div className="min-w-0">
+              <p className="text-xs font-semibold uppercase tracking-[0.22em] text-gray-500">
+                {ROLE_LABELS[author.type] ?? author.type}
+              </p>
+              <p className="truncate text-sm font-medium text-white">{author.name}</p>
+            </div>
+          </div>
+        );
+
+        if (!author.website) {
+          return <div key={author.id}>{content}</div>;
+        }
+
+        return (
+          <a
+            key={author.id}
+            href={author.website}
+            target="_blank"
+            rel="noreferrer"
+            className="transition-transform duration-200 hover:-translate-y-0.5"
+          >
+            {content}
+          </a>
+        );
+      })}
+    </div>
+  );
+}
+
+export function BlogAuthorChips({ authors }: { authors: DisplayAuthor[] }) {
+  return (
+    <div className="flex flex-wrap gap-2">
+      {authors.map((author) => (
+        <div
+          key={author.id}
+          className="inline-flex items-center gap-2 rounded-full border border-white/10 bg-black/30 px-3 py-1.5"
+        >
+          {author.imageUrl ? (
+            <img
+              src={author.imageUrl}
+              alt={author.name}
+              className="h-5 w-5 rounded-full border border-white/10 object-cover"
+            />
+          ) : (
+            <div className="flex h-5 w-5 items-center justify-center rounded-full border border-white/10 bg-white/5 text-[10px] font-semibold text-gray-300">
+              {avatarFallback(author.name)}
+            </div>
+          )}
+          <span className="text-xs font-medium text-gray-200">{author.name}</span>
+        </div>
+      ))}
+    </div>
+  );
+}

src/components/BlogCard.tsx

@@ -1,5 +1,6 @@
 import Link from "next/link";
 import type { BlogPostSummary } from "@/types";
+import { BlogAuthorChips } from "@/components/BlogAuthorList";
 
 function formatDate(value: string | null | undefined) {
   if (!value) return "Draft";
@@ -35,6 +36,12 @@ export function BlogCard({ blog, index }: { blog: BlogPostSummary; index?: numbe
 
       <p className="flex-1 text-sm leading-7 text-gray-400">{blog.excerpt}</p>
 
+      {blog.authors.length > 0 ? (
+        <div className="mt-5">
+          <BlogAuthorChips authors={blog.authors} />
+        </div>
+      ) : null}
+
       <div className="mt-6 flex items-center justify-between gap-4 text-xs uppercase tracking-[0.18em] text-gray-500">
         <span>{formatDate(blog.publishedAt)}</span>
         <span>{blog.readingTimeMinutes} min read</span>

src/lib/blogs.ts

@@ -1,5 +1,21 @@
-import type { BlogPost as PrismaBlogPost } from "@/generated/prisma/client";
-import type { BlogPost, BlogPostSummary } from "@/types";
+import type {
+  BlogAuthor as PrismaBlogAuthor,
+  BlogPost as PrismaBlogPost,
+  Prisma,
+} from "@/generated/prisma/client";
+import type { BlogAuthor, BlogPost, BlogPostSummary } from "@/types";
+
+export const blogPostInclude = {
+  authors: {
+    orderBy: {
+      sortOrder: "asc",
+    },
+  },
+} satisfies Prisma.BlogPostInclude;
+
+type PrismaBlogPostWithAuthors = PrismaBlogPost & {
+  authors: PrismaBlogAuthor[];
+};
 
 function countWords(content: string): number {
   return content
@@ -12,13 +28,24 @@ export function getReadingTimeMinutes(content: string): number {
   return Math.max(1, Math.ceil(countWords(content) / 220));
 }
 
-export function toBlogSummary(post: PrismaBlogPost): BlogPostSummary {
+function toBlogAuthor(author: PrismaBlogAuthor): BlogAuthor {
+  return {
+    id: author.id,
+    type: author.type as BlogAuthor["type"],
+    name: author.name,
+    website: author.website,
+    imageUrl: author.imageUrl,
+  };
+}
+
+export function toBlogSummary(post: PrismaBlogPostWithAuthors): BlogPostSummary {
   return {
     id: post.id,
     title: post.title,
     slug: post.slug,
     excerpt: post.excerpt,
     coverImageUrl: post.coverImageUrl,
+    authors: post.authors.map(toBlogAuthor),
     isPublished: post.isPublished,
     views: post.views,
     readingTimeMinutes: getReadingTimeMinutes(post.content),
@@ -28,7 +55,7 @@ export function toBlogSummary(post: PrismaBlogPost): BlogPostSummary {
   };
 }
 
-export function toBlogPost(post: PrismaBlogPost): BlogPost {
+export function toBlogPost(post: PrismaBlogPostWithAuthors): BlogPost {
   return {
     ...toBlogSummary(post),
     content: post.content,

src/lib/dto.ts

@@ -2,6 +2,7 @@
 // Prisma-ready data object or throws a ValidationError (mapped to HTTP 400).
 
 import { ProjectSize } from "@/generated/prisma/client";
+import { BLOG_AUTHOR_TYPES, type BlogAuthorType } from "@/types";
 
 export class ValidationError extends Error {}
 
@@ -62,6 +63,47 @@ function optDate(value: unknown): Date | null {
   return Number.isNaN(d.getTime()) ? null : d;
 }
 
+function parseBlogAuthorType(value: unknown, field: string): BlogAuthorType {
+  if (typeof value !== "string" || !BLOG_AUTHOR_TYPES.includes(value as BlogAuthorType)) {
+    throw new ValidationError(`"${field}" must be one of: ${BLOG_AUTHOR_TYPES.join(", ")}`);
+  }
+
+  return value as BlogAuthorType;
+}
+
+function parseBlogAuthors(value: unknown) {
+  if (!Array.isArray(value)) return [];
+
+  const authors = value
+    .map((entry, index) => {
+      if (!entry || typeof entry !== "object") return null;
+
+      const body = entry as Record<string, unknown>;
+      const name = optStr(body.name);
+      const website = optStr(body.website);
+      const imageUrl = optStr(body.imageUrl);
+      const hasValues = Boolean(name || website || imageUrl || body.type);
+
+      if (!hasValues) return null;
+      if (!name) throw new ValidationError(`"authors[${index}].name" is required`);
+
+      return {
+        type: parseBlogAuthorType(body.type ?? "author", `authors[${index}].type`),
+        name,
+        website,
+        imageUrl,
+        sortOrder: index,
+      };
+    })
+    .filter((author): author is NonNullable<typeof author> => author !== null);
+
+  if (authors.length > 5) {
+    throw new ValidationError("Too many authors (max 5)");
+  }
+
+  return authors;
+}
+
 export function parseProject(body: Record<string, unknown>) {
   const size = String(body.size);
   const validSize = (Object.values(ProjectSize) as string[]).includes(size)
@@ -135,6 +177,7 @@ export function parseBlogPost(body: Record<string, unknown>) {
     excerpt: str(body.excerpt, "excerpt"),
     coverImageUrl: optStr(body.coverImageUrl),
     content: str(body.content, "content"),
+    authors: parseBlogAuthors(body.authors),
     isPublished,
     publishedAt: isPublished ? publishedAt ?? new Date() : publishedAt,
   };

src/types.ts

@@ -47,12 +47,25 @@ export interface Affiliate {
   sortIndex: number;
 }
 
+export const BLOG_AUTHOR_TYPES = ["author", "co-author", "relating"] as const;
+
+export type BlogAuthorType = (typeof BLOG_AUTHOR_TYPES)[number];
+
+export interface BlogAuthor {
+  id: string;
+  type: BlogAuthorType;
+  name: string;
+  website?: string | null;
+  imageUrl?: string | null;
+}
+
 export interface BlogPostSummary {
   id: string;
   title: string;
   slug: string;
   excerpt: string;
   coverImageUrl?: string | null;
+  authors: BlogAuthor[];
   isPublished: boolean;
   views: number;
   readingTimeMinutes: number;