please help me I'd like to know why it doesn't work or if I'm doing it wrong.

I npm i mathlive to get input. And following the implementation of the nuxt plugins in the documentation doesn't work.

nuxt.config.js

export default {
  // Global page headers: https://go.nuxtjs.dev/config-head
  head: {
    title: 'Nuxtnumer',
    htmlAttrs: {
      lang: 'en',
    },
    meta: [
      { charset: 'utf-8' },
      { name: 'viewport', content: 'width=device-width, initial-scale=1' },
      { hid: 'description', name: 'description', content: '' },
      { name: 'format-detection', content: 'telephone=no' },
    ],
    link: [{ rel: 'icon', type: 'image/x-icon', href: '/favicon.ico' }],
  },

  // Global CSS: https://go.nuxtjs.dev/config-css
  css: [],

  // Plugins to run before rendering page: https://go.nuxtjs.dev/config-plugins
  plugins: ['./plugins/mathlive-vue.js'],

  // Auto import components: https://go.nuxtjs.dev/config-components
  components: true,

  // Modules for dev and build (recommended): https://go.nuxtjs.dev/config-modules
  buildModules: [],

  // Modules: https://go.nuxtjs.dev/config-modules
  modules: [
    // https://go.nuxtjs.dev/bootstrap
    'bootstrap-vue/nuxt',
    // https://go.nuxtjs.dev/axios
    '@nuxtjs/axios',
  ],

  // Axios module configuration: https://go.nuxtjs.dev/config-axios
  axios: {
    // Workaround to avoid enforcing hard-coded localhost:3000: https://github.com/nuxt-community/axios-module/issues/308
    baseURL: '/',
  },

  // Build Configuration: https://go.nuxtjs.dev/config-build
  build: {
    transpile: ['mathlive-vue']
  },
}

file mathlive-vue.js in directory plugins

import Vue from 'vue';
import * as Mathlive from 'mathlive';
import Mathfield from 'mathlive/dist/vue-mathlive.mjs'

Vue.use(Mathlive,Mathfield)

Error:

ERROR Failed to compile with 1 errors friendly-errors 19:26:11

ERROR in ./node_modules/mathlive/dist/vue-mathlive.mjs friendly-errors 19:26:11

Module parse failed: Unexpected token (2:342) friendly-errors 19:26:11
You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders | /** MathLive 0.69.11 */