Add support for nuxt 3

nuxt3/index.js

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+import { dirname, resolve } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { defineNuxtModule, addPlugin } from '@nuxt/kit';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+
+/*
+Directives will be ignored by Vue in SSR. However the v-scroll-to directive
+needs to exist in the SSR context or an error will occur: `Cannot read
+properties of undefined (reading 'getSSRProps')`. Make sure to enable this
+plugin for SSR and Vue will just ignore the directive when rendered server side.
+Remove `.client` from the filename and remove `mode: 'client'` inside
+nuxt.config.js
+
+https://vuejs.org/guide/scaling-up/ssr.html#custom-directives
+https://github.com/nuxt/framework/issues/3154
+https://github.com/nuxt/framework/issues/6570
+*/
+
+
+export default defineNuxtModule({
+  meta: {
+    name: 'vue-scrollto',
+    configKey: 'scrollto',
+    compatibility: {
+      nuxt: '^3.0.0-rc.11',
+    },
+  },
+  defaults: {},
+  hooks: {},
+  setup(options, nuxt) {
+    addPlugin({
+      mode: 'all',
+      src: resolve(__dirname, 'plugin.js'),
+      // fileName: 'vue-scrollto.js',
+      // options,
+    });
+  },
+});

nuxt3/plugin.js

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+import VueScrollTo from 'vue-scrollto';
+
+export default defineNuxtPlugin((nuxtApp) => {
+  nuxtApp.vueApp.use(VueScrollTo);
+  return {
+    provide: {
+      scrollTo: VueScrollTo.scrollTo,
+    },
+  };
+});