From 50f0ba29a247c81b5f29d290e54f7e1aabb18ab3 Mon Sep 17 00:00:00 2001
From: Zijing Zhang <50045289+pluveto@users.noreply.github.com>
Date: Thu, 16 Nov 2023 23:31:20 +0000
Subject: [PATCH] feat: cname emitter (#590)

---
 quartz/plugins/emitters/index.ts |    1 +
 quartz/plugins/emitters/cname.ts |   29 +++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 0 deletions(-)

diff --git a/quartz/plugins/emitters/cname.ts b/quartz/plugins/emitters/cname.ts
new file mode 100644
index 0000000..ffe2c6d
--- /dev/null
+++ b/quartz/plugins/emitters/cname.ts
@@ -0,0 +1,29 @@
+import { FilePath, joinSegments } from "../../util/path"
+import { QuartzEmitterPlugin } from "../types"
+import fs from "fs"
+import chalk from "chalk"
+
+export function extractDomainFromBaseUrl(baseUrl: string) {
+  const url = new URL(`https://${baseUrl}`)
+  return url.hostname
+}
+
+export const CNAME: QuartzEmitterPlugin = () => ({
+  name: "CNAME",
+  getQuartzComponents() {
+    return []
+  },
+  async emit({ argv, cfg }, _content, _resources, _emit): Promise<FilePath[]> {
+    if (!cfg.configuration.baseUrl) {
+      console.warn(chalk.yellow("CNAME emitter requires `baseUrl` to be set in your configuration"))
+      return []
+    }
+    const path = joinSegments(argv.output, "CNAME")
+    const content = extractDomainFromBaseUrl(cfg.configuration.baseUrl)
+    if (!content) {
+      return []
+    }
+    fs.writeFileSync(path, content)
+    return [path] as FilePath[]
+  },
+})
diff --git a/quartz/plugins/emitters/index.ts b/quartz/plugins/emitters/index.ts
index 99a2c54..bc378c4 100644
--- a/quartz/plugins/emitters/index.ts
+++ b/quartz/plugins/emitters/index.ts
@@ -7,3 +7,4 @@
 export { Static } from "./static"
 export { ComponentResources } from "./componentResources"
 export { NotFoundPage } from "./404"
+export { CNAME } from "./cname"

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