step4

nuxt.config.ts

@@ -1,4 +1,11 @@
-// https://v3.nuxtjs.org/api/configuration/nuxt.config
+import SheetJSModule from './sheetmodule'
+
 export default defineNuxtConfig({
-  modules: ['@nuxt/content']
+  // @ts-ignore
+  telemetry: false,
+  modules: [
+    SheetJSModule,
+    '@nuxt/content'
+  ],
+  content: {}
 })

sheetformer.ts

@@ -0,0 +1,15 @@
+// @ts-ignore
+import { defineTransformer } from "@nuxt/content/transformers/utils";
+import { read, utils } from "xlsx";
+import { readFileSync } from "node:fs";
+import { resolve } from 'node:path';
+
+export default defineTransformer({
+  name: 'sheetformer',
+  extensions: ['.xlsx'],
+  parse (_id: string, rawContent: string) {
+    const wb = read(readFileSync(resolve("./content/" + _id.slice(8))));
+    const body = wb.SheetNames.map(name => ({ name, data: utils.sheet_to_json(wb.Sheets[name])}));
+    return { _id, body };
+  }
+});

sheetmodule.ts

@@ -0,0 +1,14 @@
+import { resolve } from 'path'
+import { defineNuxtModule } from '@nuxt/kit'
+
+export default defineNuxtModule({
+  setup (_options, nuxt) {
+    nuxt.options.nitro.externals = nuxt.options.nitro.externals || {}
+    nuxt.options.nitro.externals.inline = nuxt.options.nitro.externals.inline || []
+    nuxt.options.nitro.externals.inline.push(resolve('./sheetmodule'))
+    // @ts-ignore
+    nuxt.hook('content:context', (contentContext) => {
+      contentContext.transformers.push(resolve('./sheetformer.ts'))
+    })
+  }
+})