Try incremental builds

cache-me.js

@@ -0,0 +1,52 @@
+
+const fs = require('fs-extra')
+const path = require('path')
+const Rsync = require('rsync')
+
+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, 'dist')
+
+const rsync = new Rsync()
+    .shell('ssh')
+    .flags('azq')
+    .source(BUILD_PATH + '/')
+    .destination(CACHE_PATH)
+
+async function cacheFinalFiles() {
+    try {
+        await fs.copy(BUILD_PATH, CACHE_PATH)
+        await fs.move(path.resolve(__dirname, '.nuxt'), path.join(CACHE_PATH, '.nuxt'))
+    } catch (e) {
+        console.log(e)
+    }
+}
+
+async function cacheAndCopy() {
+    try {
+        await fs.ensureDir(CACHE_PATH)
+        rsync.execute(async function(error, code, cmd) {
+            if (!error) {
+                await fs.copy(CACHE_PATH, BUILD_PATH)
+                await cacheFinalFiles()
+                console.log('Please tell me you are well cached.')
+            } else console.error('error')
+        })
+    } catch (err) {
+        // handle error
+        console.log('cache and copy ')
+        console.log(err)
+    }
+}
+
+async function putCacheBack() {
+
+}
+
+module.exports = {
+    cacheAndCopy
+}

move-cache-back.js

@@ -0,0 +1,48 @@
+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()
+
+})()

nuxt.config.js

@@ -2,6 +2,7 @@ import { promises as fs } from 'fs'
 
 import pkg from './package'
 
+const { cacheAndCopy } = require('./cache-me.js')
 
 export default {
     target: 'static',
@@ -19,9 +20,14 @@ export default {
         // build: {
         //     before: storeAppLists
         // },
-        // generate: {
-        //     before: storeAppLists
-        // }
+        generate: {
+            // before: storeAppLists
+            async done() {
+                console.log('Starting Netlify Cache')
+                await cacheAndCopy()
+                console.log('Finished Netlify Cache')
+            }
+        }
     },
 
     generate: {
@@ -32,11 +38,74 @@ export default {
                 'assets'
             ]
         },
-        routes() {
-            return fs.readFile('./static/nuxt-endpoints.json', 'utf-8')
+        async routes () {
+
+            const additionalRoutes = []
+            const oldRoutesJsonPath = './dist/nuxt-endpoints.json'
+
+            const noOldRoutesFound = await fs.stat( './dist/index.html' )
+                .then(stats => {
+                    console.log( 'stats', stats )
+                    return false
+                })
+                .catch(() => true)
+
+            const freshRoutesList = await fs.readFile('./static/nuxt-endpoints.json', 'utf-8')
                 .then( endpointsJson => {
                     return JSON.parse(endpointsJson)
                 })
+
+            if ( noOldRoutesFound ) {
+                console.log('No old routes found: Building all routes')
+                return freshRoutesList
+            }
+            console.log('Old routes found')
+
+            // Get routes from previous build
+            const oldRoutesList = await fs.readFile(oldRoutesJsonPath, 'utf-8')
+                .then( endpointsJson => {
+                    return JSON.parse(endpointsJson)
+                })
+
+            // if there are more old routes
+            // then rebuild from scratch
+            if ( oldRoutesList.length > freshRoutesList.length ) {
+                console.log('More old routes than current ones: Building all routes')
+                return freshRoutesList
+            }
+            console.log('oldRoutesList.length', oldRoutesList.length)
+            console.log('freshRoutesList.length', freshRoutesList.length)
+
+            // Store old routes into set
+            // so we can quickly compare them
+            const oldRoutesSet = new Map( oldRoutesList.map( endpoint => [ endpoint.route, endpoint.payload ] ) )
+
+            // Look through fresh routes and store any that are new
+            for ( const routeFromFreshList of freshRoutesList ) {
+                // If the route in not in old routes
+                // then regenerate this route
+                if ( !oldRoutesSet.has( routeFromFreshList.route ) || JSON.stringify(oldRoutesSet.get( routeFromFreshList.route )) !== JSON.stringify(routeFromFreshList.payload) ) {
+                    console.log( 'Found new route', routeFromFreshList.route )
+                    additionalRoutes.push( routeFromFreshList )
+
+                    continue
+                }
+
+                const payloadChanged = JSON.stringify(oldRoutesSet.get( routeFromFreshList.route )) !== JSON.stringify(routeFromFreshList.payload)
+
+                // If the route payload changed
+                // then regenerate this route
+                if ( payloadChanged ) {
+                    console.log( 'Route payload changed', routeFromFreshList.route )
+                    additionalRoutes.push( routeFromFreshList )
+
+                    continue
+                }
+            }
+
+            console.log( 'additionalRoutes', additionalRoutes.length )
+
+            return additionalRoutes
         }
     },
 
@@ -149,7 +218,7 @@ export default {
     ** Build configuration
     */
     build: {
-        parallel: true,
+        // parallel: true,
         // hardSource: true,
         cache: true,
         html: {

package.json

@@ -8,9 +8,10 @@
     "dev": "nuxt",
     "build": "nuxt build",
     "start": "nuxt start",
-    "generate": "npm run clone-readme && npm run build-lists && npm run generate-nuxt && npm run generate-eleventy",
+    "generate": "npm run clone-readme && npm run build-lists && npm run generate-nuxt-incremental && npm run generate-eleventy",
     "build-lists": "node -r esm build-lists.js",
     "generate-nuxt": "nuxt generate",
+    "generate-nuxt-incremental": "node move-cache-back.js",
     "generate-eleventy": "npm run generate-postcss && node -r esm node_modules/.bin/eleventy --quiet",
     "generate-postcss": "ENV=production postcss assets/css/tailwind.css --o static/tailwind.css",
     "dev-eleventy": "node -r esm node_modules/.bin/eleventy --quiet --watch --serve",