initial

quartz/components/Date.tsx

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+import { GlobalConfiguration } from "../cfg"
+import { ValidLocale } from "../i18n"
+import { QuartzPluginData } from "../plugins/vfile"
+
+interface Props {
+  date: Date
+  locale?: ValidLocale
+}
+
+export type ValidDateType = keyof Required<QuartzPluginData>["dates"]
+
+export function getDate(cfg: GlobalConfiguration, data: QuartzPluginData): Date | undefined {
+  if (!cfg.defaultDateType) {
+    throw new Error(
+      `Field 'defaultDateType' was not set in the configuration object of quartz.config.ts. See https://quartz.jzhao.xyz/configuration#general-configuration for more details.`,
+    )
+  }
+  return data.dates?.[cfg.defaultDateType]
+}
+
+export function formatDate(d: Date, locale: ValidLocale = "en-US"): string {
+  return d.toLocaleDateString(locale, {
+    year: "numeric",
+    month: "short",
+    day: "2-digit",
+  })
+}
+
+export function Date({ date, locale }: Props) {
+  return <>{formatDate(date, locale)}</>
+}