Getting "bad-precaching-response " error after service worker registeration is successful - service-worker

Question

In my project, I am using NextJS+KOA+Apollo. My nextJS app is inside client in root directory. I am using next-offline to convert it to PWA.
Nextjs app is inside client directory. koa server is inside server directory.
when i am building the app via below command:
next build client && tsc --project tsconfig.server.json
it creates a build directory inside client for nextjs and dist directory at the top level for koa server.
i run the code in production via below command
NODE_ENV=production node dist/server/index.js
ISSUE
Service worker is getting registered properly. But I am getting below error:
PrecacheController.mjs:194
Uncaught (in promise) bad-precaching-response: bad-precaching-response :: [{"url":"https://my-domain/_next/bo.svg?__WB_REVISION__=e02afe0476bb357aebde18136fda06e0","status":404}]
at l.o (https://storage.googleapis.com/workbox-cdn/releases/4.3.1/workbox-precaching.prod.js:1:1749)
at async Promise.all (index 0)
at async l.install (https://storage.googleapis.com/workbox-cdn/releases/4.3.1/workbox-precaching.prod.js:1:1221)
Below is my build file that gets generated:
tsconfig.server.json
{
"extends": "./tsconfig.json",
"compilerOptions": {
"module": "commonjs",
"outDir": "dist",
"target": "es2017",
"isolatedModules": false,
"noEmit": false
},
"include": ["server/**/*.ts"]
}
Below is my next.config.js (inside client direcotry)
/* eslint-disable #typescript-eslint/no-var-requires */
const withPlugins = require("next-compose-plugins");
const offline = require("next-offline");
const pino = require("next-pino");
const withTypescript = require("#zeit/next-typescript");
const withCSS = require("#zeit/next-css");
const withLess = require("#zeit/next-less");
const Dotenv = require("dotenv-webpack");
const path = require("path");
const _ = require("lodash");
const nextConfig = {
distDir: "build",
webpack(config) {
config.module.rules.push({
test: /\.(eot|woff|woff2|ttf|svg|png|jpg|gif)$/,
use: {
loader: "url-loader",
options: {
limit: 100000,
name: "[name].[ext]",
},
},
});
config.plugins.push(
new Dotenv({
path: path.resolve(process.cwd(), ".env"),
systemvars: true,
}),
);
return config;
},
// overwrites values given in the .env file with the current
// process.env value
env: _.omitBy(
{
GRAPHQL_SERVER: process.env.GRAPHQL_SERVER,
},
_.isUndefined,
),
workboxOpts: {
globPatterns: ["static/**/*"],
globDirectory: "client",
runtimeCaching: [
{
urlPattern: /^https?.*/,
handler: "NetworkFirst",
options: {
cacheName: "offlineCache",
expiration: {
maxEntries: 200,
},
},
},
],
},
};
const cssConfig = {
cssModules: true,
cssLoaderOptions: {
importLoaders: 1,
localIdentName: "[local]",
},
};
const lessConfig = cssConfig;
module.exports = withPlugins(
[
[offline],
[pino],
[withTypescript],
[withCSS, cssConfig],
[withLess, lessConfig],
],
nextConfig,
);
And below is my file to start koa server
import Router from "koa-router";
const server = new Koa();
const dev = !["production", "staging"].includes(process.env.NODE_ENV || "");
const app = next({ dir: "./client", dev });
const publicRouter = new Router();
const handle = app.getRequestHandler();
publicRouter.get("/service-worker.js", async ctx => {
const pathname = await join(
__dirname,
"../../../client/build",
"service-worker.js",
);
ctx.body = await app.serveStatic(ctx.req, ctx.res, pathname);
ctx.respond = false;
});
publicRouter.get("*", async ctx => {
if (!ctx.path.match(/graphql/)) {
await handle(ctx.req, ctx.res);
ctx.respond = false;
}
});
server.use(async (ctx, next) => {
ctx.res.statusCode = 200;
await next();
});
server.use(publicRouter.routes()).use(publicRouter.allowedMethods());
server.listen({ port: 3000 });
================================================================
I have done a dirty fix for now. I am not sure how to handle it properly. I will really appreciate if anyone can put forth their view on this.
As bo.svg, firfox.svg, all these static files are throwing 404,
Ex - (/_next/bo.svg?WB_REVISION=e02afe0476bb357aebde18136fda06e0)
in my file to start koa server, added a condition to check this URL and serve static file from build directory like below:
publicRouter.get("*", async ctx => {
if (ctx.path.match(/\_next/) && ctx.path.match(/\.svg/)) {
const pathname = await join(
__dirname,
"../../../client/build",
ctx.path.replace("_next/", ""),
);
ctx.body = await app.serveStatic(ctx.req, ctx.res, pathname);
ctx.respond = false;
} else if (!ctx.path.match(/graphql/)) {
await handle(ctx.req, ctx.res);
ctx.respond = false;
}
});
It served my prupose for now, but not sure how to handle this properly.