move-cache-back.js

const fs = require('fs-extra')
const path = require('path')
const { exec } = require("child_process")

const isProduction = process.env.NODE_ENV === 'PRODUCTION'

const CACHE_PATH = isProduction
  ? path.join('/', 'opt', 'build', 'cache', 'nuxt_build') // Netlify cache path
  : path.resolve(__dirname, '.nuxt_build')

const BUILD_PATH = path.resolve(__dirname, '.nuxt')

async function putNuxtClientBack() {
  const exists = await fs.pathExists(CACHE_PATH)
  if (exists) {
    console.log("cache found")
    await fs.copy(CACHE_PATH, BUILD_PATH)
    exec('nuxt generate --no-build', (error, stdout, stderr) => {
        if (error) {
            console.log(`error: ${error.message}`);
            return;
        }
        if (stderr) {
            console.log(`stderr: ${stderr}`);
            return;
        }
        console.log(`stdout: ${stdout}`);
    });
  } else {
    console.log("no cache")
    exec('npm run generate', (error, stdout, stderr) => {
      if (error) {
          console.log(`error: ${error.message}`);
          return;
      }
      if (stderr) {
          console.log(`stderr: ${stderr}`);
          return;
      }
      console.log(`stdout: ${stdout}`);
  });
  }
}

;(async () => {
  await putNuxtClientBack()

})()