I am having a hard time getting my app to come up on Heroku after deploying a VUE JS application. It keeps giving me a Not Found page (even when everything builds)
After looking over a lot of suggestions on Stack Overflow and videos, I finally figured it out. The first think you want to do is go to the command line and type: Heroku Logs, when I did this, I saw this:
Error: ENOENT: no such file or directory, stat '/app/client/build/index.html'
After some research, I found out that when the vue cli builds, it places it assets in a folder called 'dist" and not build. In my server.js file, I just changed my entry to
if(process.env.NODE_ENV === 'production')
{
//Set static folder (our public folder)
app.use(express.static('client/dist'));
app.get('*',(req,res) => {
res.sendFile(path.resolve(__dirname,'client','dist','index.html'));
})
}
It "used to have" 'build' in it, 'build' is actually used if you are deploying a "React" application (which have done on a previous build). After I changed this to 'dis', MY APP CAME UP .. !!! YAHHHHH!!!
Related
I've gone through several Stack Overflow pages and the official Vue guide, but my app still returns 404 results when going to a different page.
The structure of my app looks like this, with a client folder that has the Vue app and a server folder containing app.py that statically serves the index.html in the client/dist folder through Flask.
Contents of static.json are as outlined in the guide:
{
"root": "client/dist",
"clean_urls": true,
"routes": {
"/**": "index.html"
}
}
with just modified root folder to go to client/dist. Running the app locally with npm run serve works, as does opening it up on its Heroku page and clicking on the nav. However, directly going to a page, such as /translate, always returns 404.
I have installed the following buildpacks:
=== readiglot Buildpack URLs
1. heroku/nodejs
2. heroku/python
3. https://github.com/heroku/heroku-buildpack-static
The app is hosted here: https://www.readiglot.herokuapp.com.
On npm run build from the root directory, the dist folder is built by Heroku in the client folder.
Am I missing something? Could anyone advise as to additional configuration?
The answer is in the app.py file - you need to statically serve the file using a catch all route.
#app.route("/", defaults={"path": ""})
#app.route("/<string:path>")
#app.route("/<path:path>")
def index(path):
return app.send_static_file("index.html")
By putting the serve_static_file in the Flask app to redirect from all other routes, 404 only shows up on a true 404.
Summary:
I have created projects, with Vue.js and Nuxt.js, where I have installed aws-amplify (which automatically installs aws-sdk) in order that I can implement authentication with AWS Cognito.
In both cases, this works very nicely, but the problems come when I build production versions.
In both cases, I end up with massive bundle sizes which (thanks to webpack-bundle-analyzer) I can immediately see are caused by the aws-sdk which appears to contain code to implement every AWS service, under the sun, despite the fact that I am only importing AWS Cognito's: "Auth" (import { Auth } from 'aws-amplify')
I have tried creating a custom AWS SDK for JavaScript, which only includes the service: AWS.CognitoIdentity, but despite incorporating that (presumably incorrectly), I still end up with the same bundle size (and aws-sdk files) when I build the projects.
As I say, this is happening in both Nuxt and Vue project, but in order to simplify this, I for now just want to find the solution to a very basic sample project created with Vue.
I think I must be doing something dumb, but I can't work out what that is.
Any help would be greatly appreciated! :-)
Steps to reproduce:
Create a basic Vue.js project with defaults. Run: vue create vue-aws-sdk-inv
[Note: Steps 2 - 4, are not crucial to reproduce issue, but install webpack-bundle-analyzer which provides useful extra info.]
In the new project, install webpack-bundle-analyzer. Run: npm install --save-dev webpack-bundle-analyzer
Create root file: vue.config.js
Add the following code to vue.config.js:
const BundleAnalyzerPlugin = require("webpack-bundle-analyzer")
.BundleAnalyzerPlugin;
module.exports = {
configureWebpack: {
plugins: [new BundleAnalyzerPlugin()]
}
};
As a benchmark, build the project. Run: npm run build
At this stage, the project will build (with no console warnings) and webpack-bundle-analyzer will launch (in the browser) showing the file: chunk-vendors..js, at the top of the tree, containing a bunch of other .js files, all of acceptable size.
Install AWS Amplify (and by default aws-sdk). Run: npm i aws-amplify
Open src/components/HelloWorld.vue and add the following under the tag: import { Auth } from "aws-amplify";
Build the project. Run: npm run build
At this stage, the project will build WITH console warnings regarding the following files being too large:
File Size Gzipped
dist/js/chunk-vendors.013ac3f0.js 3055.78 KiB 550.49 KiB
dist/js/app.fa2a21c4.js 4.67 KiB 1.67 KiB
dist/css/app.53019c4c.css 0.33 KiB 0.23 KiB
If installed, webpack-bundle-analyzer should launch (in the browser) showing an inflated: chunk-vendors..js, due to a hefty: aws-sdk.
aws-sdk will include api: .json files and lib: .js files for every AWS service I can think of!
The attempt to rectify:
Navigate to: https://sdk.amazonaws.com/builder/js/
Clear all services.
Select just: AWS.CognitoIdentity
Download "Minified" aws-sdk-.js
Download "Default" aws-sdk-.min.js
[Note: the following are the steps I am guessing I'm getting wrong?...]
In the project, search the node_modules directory for aws-sdk.js and aws-sdk.min.js.
They were found in /node_modules/aws-sdk/dist
Replace both files with the downloaded files (renaming to aws-sdk.js and aws-sdk.min.js respectively.)
Build the project. Run: npm run build
Project will build with same console warnings and same massive aws-sdk, as before, containing all the same .js and .json files for a bunch of services that are not actually imported in the application.
Final pieces of analysis:
Remove aws-sdk.js and aws-sdk.min.js from project's: /node_modules/aws-sdk/dist
Build the project. Run: npm run build
Project is built without even referencing these files.
Rename /node_modules/aws-sdk to /node_modules/TEMP_aws-sdk and attempt to build the project.
Build fails, and this proves (I think) that I was at least trying to add the custom versions, of aws-sdk.js and aws-sdk.min.js, somewhere in the correct directory!
Source Code:
vue.config.js:
const BundleAnalyzerPlugin = require("webpack-bundle-analyzer")
.BundleAnalyzerPlugin;
module.exports = {
configureWebpack: {
plugins: [new BundleAnalyzerPlugin()]
}
};
src/components/HelloWorld.vue:
import { Auth } from "aws-amplify";
As said before, any help would be greatly appreciated! :-)
It looks like import { Auth } from "aws-amplify"; doesn't currently allow for tree shaking according to this issue.
Reading through several related issues, it appears that:
import Auth from '#aws-amplify/auth';
is the best you can currently do. I suspect that over time, the AWS team will figure out a way to better separate the internals.
For readers looking for a way to reduce bundle sizes for the aws-sdk package, see this section of the docs.
In my case:
import S3 from 'aws-sdk/clients/s3';
import AWS from 'aws-sdk/global';
cut the bundle size down by quite a lot. That gets it down to ~57k gz to use S3.
Also, for anyone using nuxt you can just run nuxt build -a to get the build analyzer.
I've created a new site using Gridsome deployed with Netlify, but I can't get the site to appear when accessed. Instead, Netlify says:
Page Not Found
Looks like you've followed a broken link or entered a URL that doesn't exist on this site.
< Back to our site
I tried updating my build settings based on the instructions of the creator of the Gridsome starter template I'm using, but the site still doesn't display. I've also updated the js-yaml version.
I've gone through the questions/answers for similar questions on here, but I haven't been able to figure this out. I'm new to web development, and I'm sure I'm missing one or more things contributing to the issue.
My GitHub repo for this site.
The site.
I have the build log from Netlify. There are some errors in it. I don't want to put too much here, so here's a part from the end of the log.
12:18:36 PM: failed during stage 'building site': Build script returned non-zero exit code: 1
12:18:36 PM: Error running command: Build script returned non-zero exit code: 1
12:18:36 PM: Failing build: Failed to build site
12:18:36 PM: Finished processing build request in 55.729813394s
A Gist for the whole build log.
Thanks so much for your help, #talves!
I was having trouble using the build commands because of being new to cli stuff and a permissions issue. I asked a friend about the build errors I was getting from Netlify, and he recommended I try removing and re-installing my node modules. Did that, still didn't work. I tried removing anything in the repo having to do with "journal" since Failed to render /journal kept appearing in the build log, but that didn't work either.
I googled ReferenceError: _objectSpread is not defined after update since that was in the build log after the journal error. I found a comment on an issue noting the same error message in the main Babel GitHub repo that suggested adding the following to the package.json file:
"resolutions": {
"#babel/core": "^7.5.4"
}
I added it, tried to build again, and it still failed but only gave me one error message it didn't show before—Error: SyntaxError: Unexpected string in JSON at position. I googled that message and got another issue on GitHub. A comment on the issue noted a missing comma.
I went back to my package.json file and found that I didn't add a comma to the bracket above the new "resolutions" snippet. I added the comma, tried to build again, and it worked 🤜💥✨ !
Sorry if this is long-winded! I thought it might be good to include my process on figuring this out in case others run into the same issues.
I've got an existing code base in which Vue.js has performance problems. I also see this notice in the browser console:
so I guess an easy fix could be to put Vue into production mode.
In the suggested link I try to follow the instructions for webpack. We're on Webpack version 2.7 (current stable version is 4.20). In the instructions it says that in Webpack 3 and earlier, you’ll need to use DefinePlugin:
var webpack = require('webpack')
module.exports = {
// ...
plugins: [
// ...
new webpack.DefinePlugin({
'process.env.NODE_ENV': JSON.stringify('production')
})
]
}
So in my package.json I've got a build script defined:
To build for production I run yarn run build and it runs a build.js file (paste here) which in turn calls webpack.base.conf.js (paste here) and webpack.prod.conf.js (paste here).
As you can see in the paste I use the DefinePlugin as suggested by the docs.
I also found a file called vue-loader.conf.js (paste here) and to be sure I also added the DefinePlugin in there as well.
I can run yarn run build which ends without errors, but when serve the site over Apache and open the browser it still shows the notification that we're in development mode.
To be sure it actually uses the files created by webpack I completely removed the folder /public/webpack/ and checked that the webinterface didn't load correctly without the missing files and then built again to see if it loaded correctly after the command finished. So it does actually use the files built by this webpack process. But Vue is actually not created in production mode.
What am I doing wrong here?
The problem may be in your 'webpack.base.conf.js' as i suspected, thank you for sharing it, upon searching i've found an issue resolving your 'production not being detected' problem on github here
The solution requires that you change 'vue$': 'vue/dist/vue' to 'vue$': vue/dist/vue.min in production.
You will find the original answer as:
#ozee31 This alias 'vue$': 'vue/dist/vue' cause the problem, use vue/dist/vue.min in production environment.
After bundling a simple aurelia application with jspm bundle-sfx I get the following error:
No PLATFORM.Loader is defined and there is neither a System API (ES6) or a Require API (AMD) globally available to load your app.
An example application: https://github.com/Baudin999/jspm-bundling-test
You can use: npm run setup:dev in a non windows env to switch back to the dev settings (which is just a comment/uncomment in the ./src/client/index.html) and you can use npm run setup:prod to switch back to the production environment, bundling will automatically be triggered. all other scripts can be found in the package.json.
I can't link to other questions because I haven't found any questions which relate to this problem. I "think" (which means absolutely nothing) that this might be related to the fact that aurelia needs a full loader even when bundling with bundle-sfx but I haven't found any ways to solve the error.
EDIT (25/01/2017 17:16): I've found out that the error is because I import the aurelia-bootstrapper.
As soon as I add: import * as bootstrapper from 'aurelia-bootstrapper'; I get the error
Please add the code how do you bootstrap your aurelia app.
There is nothing actually to import from bootstrapper apart from bootstrap function.
Which you would use in case of custom manual bootstrapping.
like in
import { bootstrap } from 'aurelia-bootstrapper'
const configure: (au: Aurelia) => {} = async function (au: Aurelia) {
au.use
.standardConfiguration();
await au.start()
au.setRoot() // or au.enchance()
})
bootstrap(configure)
in a happy path scenario with jspm - you System.import('aurelia-bootstrapper')
and it takes over finding the root node of your app and the script to configure Aurelia (main by default)
Have a look at Bootstrapping Aurelia in the docs
Oh.. and bundle-sfx is not supported there are other means to bundle aurelia apps using jspm