I've created a file that marries handlebar templating to the MJML framework. My issue is I'm not quite sure how preview the live output as I make changes.
I would like to either:
• run a script that will fs.writeFile every-time there is a change to my index.js file and then live serves it
• or preview the main index file directly w/o the fs options
Any guidance would be GREATLY appreciated.
PACKAGE FILE
{
"name": "g_test",
"version": "1.0.0",
"description": "",
"main": "index.js",
"type": "module",
"scripts": {
"start": "",
"server": "",
"dev": "",
"build": ""
},
"keywords": [],
"author": "",
"license": "ISC",
"devDependencies": {
"concurrently": "^6.3.0",
"handlebars": "^4.7.7",
"live-server": "^1.2.1",
"mjml": "^4.10.3"
},
"dependencies": {}
}
INDEX FILE
// SET "type": "module", in PACKAGE FILE TO USE IMPORT
import mjml2html from 'mjml'
import Handlebars from 'handlebars'
import fs from 'fs'
// PUT DUMMY CONTENT HERE
const context = {
fullName: 'Bob Wiley',
message: 'How are you feeling?',
logo: 'https://picsum.photos/300/100',
}
// MJML GOES HERE
const template = Handlebars.compile(`
<mjml>
<mj-head>
<mj-title>Little MJML/Handlebars App</mj-title>
<mj-preview>Preview text trick͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ </mj-preview>
</mj-head>
<mj-body>
<mj-section background-color="#FF5733" padding-bottom="0">
<mj-column paddin"10px" width="70%">
<mj-text font-style="italic" font-size="18px" color="#FFFC33">Little MJML/Handlebars App</mj-text>
</mj-column>
<mj-column width="30%">
<mj-image width="60px" src={{logo}} />
</mj-column>
</mj-section>
<mj-section background-color="#FAFAFA">
<mj-column padding="30px">
<mj-text font-style="italic" font-size="15px" font-family="Helvetica Neue" color="#626262">
Hello {{fullName}},
</mj-text>
<mj-text color="#525252">{{message}}
</mj-text>
</mj-column>
</mj-section>
<mj-section background-color="#FAFAFA">
<mj-column padding="30px">
</mj-text>
<mj-text color="#525252">
{{#if activeUser}}
Hi active user!
{{else}}
Hi inactive user
{{/if}}
</mj-text>
</mj-column>
</mj-section>
</mj-body>
</mjml>
`)
// COMPILING
const mjml = template(context)
const {html} = mjml2html(mjml)
// console.log(html)
// WRITING TO OUTPUT FOLDER
fs.writeFile('./output/new.html', html.toString(), { encoding: 'utf8' }, function (err) {
if (err) {
return console.log(err)
}
console.log('The file was saved to the output folder')
})
// TEST FS WATCH
// setTimeout(
// () => fs.writeFileSync("index.js",
// fs.writeFile('./output/new.html', html.toString(), { encoding: 'utf8' }, function (err) {
// if (err) {
// return console.log(err)
// }
// console.log('The file was saved to the output folder')
// })
// ), 3000
// );
If you happen to use one of the JetBrains IDEs,
You could probably accomplish this with their File Watcher. It does exactly what you seek--if any one file or any file described as part of a group changes (say, *.mjml), it runs a script. Written correctly, the script results in HTML sent to an external browser window handled by Live Edit, part of JetBrains. There's an example of the JetBrains part, except for the Handlebars part, at https://github.com/mjmlio/mjml/issues/53#issuecomment-719887303
The JetBrains plugin "MJML Support" does exactly this internal to the IDE, except the Handlebars support.
Maybe other IDEs have similar.
Perhaps instead of using the JetBrains Live Edit, you could use a browser add-in offering a live browser.
You could write JavaScript to do exactly what you need. NPM has packages that watch for changes to files. Please consider supporting your finished code as an NPM package. I'm confident other Handlebars/MJML users are interested. Possibly, the MJML team would be willing to list your package in their documentation; they get lots of questions about this.
BTW: In addition to StackOverflow, a great source of MJML support is https://mjml.slack.com/ You probably would have gotten a more prompt response there than this one. (Sorry!)
Related
I'm building a couple of apps with vue3 and vite, using some shared components. The production build process works OK but I'm having a problem with dev/debug. The Vite docs (for multi-page apps) says
"During dev, simply navigate or link to /nested/ - it works as
expected, just like for a normal static file server."
but I don't know what this means - how do I link to a sub folder? I have added /src/app1 to url in launch.json, but it has no effect. I have also tried using cd src\app1 in the terminal before running npm run dev
"version": "0.2.0",
"configurations": [
{
"type": "firefox",
"request": "launch",
"name": "vuejs: firefox -width 300 -height 600 -P default",
"url": "http://localhost:5173/src/app1",
"webRoot": "${workspaceFolder}",
"pathMappings": [
{
"url": "file:///C:",
"path": "c:"
}
]
}
]
(This launch.json works well with a simple single-page app).
What happens with trying to debug one of the apps is that the project launches but with an empty index.html (i.e. a blank screen with no errors). I'm pretty sure the basic project structure is OK because (as I said) the build process works; I get two separate outputs of html+css+js both of which work as expected, with the correct shared components.
Also, if I tell the Vite server to automatically open the page (as I have done in my vite.config.js below) the page opens correctly - although without a debugger attached of course. So I guess that the settings in launch.json are incorrect.
The project structure is:
-src
-app1
-app.vue
-index.html
-main.js
-app2
-app.vue
-index.html
-main.js
-assets
...
-shared
-components
-shared.vue
If I have just one index.html, moved up a level, I can debug each app but only by editing it every time to point to a different main.js and to change the title, which seems a laborious way of approaching the task.
Below is my vite config. The extra lines in alias were added as an attempt to solve the problem but they are probably incorrect (or unneccesary)
import { fileURLToPath, URL } from 'node:url'
import { resolve } from 'path'
import { defineConfig } from 'vite'
import vue from '#vitejs/plugin-vue'
// https://vitejs.dev/config/
export default defineConfig({
plugins: [vue()],
server: {
base: '/src/app1',
open: '/src/app1/index.html',
},
resolve: {
alias: {
vue: 'vue/dist/vue.esm-bundler.js',
'#': fileURLToPath(new URL('./src', import.meta.url)),
app1: fileURLToPath(new URL('./src/app1', import.meta.url)),
app2: fileURLToPath(new URL('./src/app2', import.meta.url)),
// shared: fileURLToPath(new URL('./src/shared/components', import.meta.url)),
}
},
build: {
rollupOptions: {
input: {
app1: resolve(__dirname, './src/app1/index.html'),
app2: resolve(__dirname, './src/app2/index.html'),
},
},
},
})
I've made things more complex than neccesary because I missed the important setting. In vite.config.js, it's important to define root to point to where each index.html is found. So for my structure above, the config file looks like
import { defineConfig } from 'vite'
import vue from '#vitejs/plugin-vue'
export default defineConfig({
plugins: [vue() ],
root: "src\app1",
resolve: {
alias: {
vue: 'vue/dist/vue.esm-bundler.js',
}
}
})
In the process I've also swapped from Firefox to Chrome for debug (I was getting a lot of irrelevant error messages from Firefox), and my launch.json is now simply
{
"version": "0.2.0",
"configurations": [
{
"type": "chrome",
"request": "launch",
"name": "Launch Chrome against localhost",
"url": "http://localhost:5173",
"webRoot": "${workspaceFolder}",
}
]
}
It doesn't really matter what the file structure looks like, as long as within each file its dependencies are correctly addressed. The only important bit is the root. Simply by changing that from 'app1' to 'app2' will switch both the debug and the build to the correct folders, with the release (built) files being stored in subfolders of 'app1' and 'app2' independently.
It would be easy to extend this to have more than 2 apps each sharing the same common components.
I have a nextjs app with redux.
When I try to use the ?? operator in my pages/index, it works as it should.
I then tried to load up a redux store with a bunch of reducers. When I hit the ?? in a reducer file, I get this error:
Support for the experimental syntax 'optionalChaining' isn't currently enabled (71:32):
I also get the error in any other file: component, actions and reducers. It is only directly in the pages/* that the plugin is working properly.
My app is using next#9.1.1 and redux#4.0.4. Here is my .babelrc file:
"env": {
"development": {
"presets": ["next/babel"],
"plugins": [
"#babel/plugin-proposal-optional-chaining",
"#babel/plugin-proposal-nullish-coalescing-operator",
[
"styled-components",
{ "ssr": true, "displayName": true, "preprocess": false }
]
]
}
}
}
Is there something that would override my babel config for certain files? If so, what am I missing? What else should I look at?
Problem
I am currently create a React web app and I am creating my own components that also have their own CSS files. Currently I have to create a matching CSS file everytime I create a component. I was hoping for something sort of how like when you create a project in Visual Studio is will create a .aspx page as well as a .cs file along with it.
My current structure is ../src/components/DashNav.js and the matching stylesheet would be ../src/styles/components/DashNav.scss
Question
Does anyone know if there is a way to trigger a creation of a new file each time a js file is created?
If not, is there any extensions that anyone would recommend? I have already seen VSCODE Create File Folder but that doesn't do me really any good since I can just do this in the terminal.
Folder Templates is the extension that I'm using for this right now. Here is how I've set up my folder structure and and file templates in settings.json
"folderTemplates.structures": [
{
"name": "My Custom Template",
"omitParentDirectory": true,
"structure": [
{
"fileName": "<FTName>.js",
"template": "React Functional Component"
},
{
"fileName": "<FTName>.module.css",
"template": "CSS Module"
}
]
}
],
"folderTemplates.fileTemplates": {
"React Functional Component": [
"import styles from '<FTName>.module.css';",
"",
"export const <FTName> = (props) => {",
" return <div></div>;",
"};"
],
"CSS Module": ".<FTName | lowercase> {}"
}
import '../../../../node_modules/react-responsive-carousel/lib/styles/carousel.min.css';
I have imported the above in my react app, but the classes are getting hashed since i am using css modules.. How can i import that css library in my component?
'use strict';
const autoprefixer = require('autoprefixer');
const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CaseSensitivePathsPlugin = require('case-sensitive-paths-webpack-plugin');
const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
const WatchMissingNodeModulesPlugin = require('react-dev-utils/WatchMissingNodeModulesPlugin');
const eslintFormatter = require('react-dev-utils/eslintFormatter');
const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
const getClientEnvironment = require('./env');
const paths = require('./paths');
// Webpack uses `publicPath` to determine where the app is being served from.
// In development, we always serve from the root. This makes config easier.
const publicPath = '/';
// `publicUrl` is just like `publicPath`, but we will provide it to our app
// as %PUBLIC_URL% in `index.html` and `process.env.PUBLIC_URL` in JavaScript.
// Omit trailing slash as %PUBLIC_PATH%/xyz looks better than %PUBLIC_PATH%xyz.
const publicUrl = '';
// Get environment variables to inject into our app.
const env = getClientEnvironment(publicUrl);
// This is the development configuration.
// It is focused on developer experience and fast rebuilds.
// The production configuration is different and lives in a separate file.
module.exports = {
// You may want 'eval' instead if you prefer to see the compiled output in DevTools.
// See the discussion in https://github.com/facebookincubator/create-react-app/issues/343.
devtool: 'cheap-module-source-map',
// These are the "entry points" to our application.
// This means they will be the "root" imports that are included in JS bundle.
// The first two entry points enable "hot" CSS and auto-refreshes for JS.
entry: [
// We ship a few polyfills by default:
require.resolve('./polyfills'),
// Include an alternative client for WebpackDevServer. A client's job is to
// connect to WebpackDevServer by a socket and get notified about changes.
// When you save a file, the client will either apply hot updates (in case
// of CSS changes), or refresh the page (in case of JS changes). When you
// make a syntax error, this client will display a syntax error overlay.
// Note: instead of the default WebpackDevServer client, we use a custom one
// to bring better experience for Create React App users. You can replace
// the line below with these two lines if you prefer the stock client:
// require.resolve('webpack-dev-server/client') + '?/',
// require.resolve('webpack/hot/dev-server'),
require.resolve('react-dev-utils/webpackHotDevClient'),
// Finally, this is your app's code:
paths.appIndexJs,
// We include the app code last so that if there is a runtime error during
// initialization, it doesn't blow up the WebpackDevServer client, and
// changing JS code would still trigger a refresh.
],
output: {
// Add /* filename */ comments to generated require()s in the output.
pathinfo: true,
// This does not produce a real file. It's just the virtual path that is
// served by WebpackDevServer in development. This is the JS bundle
// containing code from all our entry points, and the Webpack runtime.
filename: 'static/js/bundle.js',
// There are also additional JS chunk files if you use code splitting.
chunkFilename: 'static/js/[name].chunk.js',
// This is the URL that app is served from. We use "/" in development.
publicPath: publicPath,
// Point sourcemap entries to original disk location (format as URL on Windows)
devtoolModuleFilenameTemplate: info =>
path.resolve(info.absoluteResourcePath).replace(/\\/g, '/'),
},
resolve: {
// This allows you to set a fallback for where Webpack should look for modules.
// We placed these paths second because we want `node_modules` to "win"
// if there are any conflicts. This matches Node resolution mechanism.
// https://github.com/facebookincubator/create-react-app/issues/253
modules: ['node_modules', paths.appNodeModules].concat(
// It is guaranteed to exist because we tweak it in `env.js`
process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
),
// These are the reasonable defaults supported by the Node ecosystem.
// We also include JSX as a common component filename extension to support
// some tools, although we do not recommend using it, see:
// https://github.com/facebookincubator/create-react-app/issues/290
// `web` extension prefixes have been added for better support
// for React Native Web.
extensions: ['.web.js', '.mjs', '.js', '.json', '.web.jsx', '.jsx'],
alias: {
// Support React Native Web
// https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
'react-native': 'react-native-web',
},
plugins: [
// Prevents users from importing files from outside of src/ (or node_modules/).
// This often causes confusion because we only process files within src/ with babel.
// To fix this, we prevent you from importing files out of src/ -- if you'd like to,
// please link the files into your node_modules/ and let module-resolution kick in.
// Make sure your source files are compiled, as they will not be processed in any way.
new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]),
],
},
module: {
strictExportPresence: true,
rules: [
// TODO: Disable require.ensure as it's not a standard language feature.
// We are waiting for https://github.com/facebookincubator/create-react-app/issues/2176.
// { parser: { requireEnsure: false } },
// First, run the linter.
// It's important to do this before Babel processes the JS.
{
test: /\.(js|jsx|mjs)$/,
enforce: 'pre',
use: [
{
options: {
formatter: eslintFormatter,
eslintPath: require.resolve('eslint'),
},
loader: require.resolve('eslint-loader'),
},
],
include: paths.appSrc,
},
{
// "oneOf" will traverse all following loaders until one will
// match the requirements. When no loader matches it will fall
// back to the "file" loader at the end of the loader list.
oneOf: [
// "url" loader works like "file" loader except that it embeds assets
// smaller than specified limit in bytes as data URLs to avoid requests.
// A missing `test` is equivalent to a match.
{
test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/],
loader: require.resolve('url-loader'),
options: {
limit: 10000,
name: 'static/media/[name].[hash:8].[ext]',
},
},
// Process JS with Babel.
{
test: /\.(js|jsx|mjs)$/,
include: paths.appSrc,
loader: require.resolve('babel-loader'),
options: {
// This is a feature of `babel-loader` for webpack (not Babel itself).
// It enables caching results in ./node_modules/.cache/babel-loader/
// directory for faster rebuilds.
cacheDirectory: true,
},
},
// "postcss" loader applies autoprefixer to our CSS.
// "css" loader resolves paths in CSS and adds assets as dependencies.
// "style" loader turns CSS into JS modules that inject <style> tags.
// In production, we use a plugin to extract that CSS to a file, but
// in development "style" loader enables hot editing of CSS.
{
test: /\.css$/,
use: [
require.resolve('style-loader'),
{
loader: require.resolve('css-loader'),
options: {
importLoaders: 1,
modules: true,
localIdentName: '[name]_[local]_[hash:base64:5]'
},
},
{
loader: require.resolve('postcss-loader'),
options: {
// Necessary for external CSS imports to work
// https://github.com/facebookincubator/create-react-app/issues/2677
ident: 'postcss',
plugins: () => [
require('postcss-flexbugs-fixes'),
autoprefixer({
browsers: [
'>1%',
'last 4 versions',
'Firefox ESR',
'not ie < 9', // React doesn't support IE8 anyway
],
flexbox: 'no-2009',
}),
],
},
},
],
},
// "file" loader makes sure those assets get served by WebpackDevServer.
// When you `import` an asset, you get its (virtual) filename.
// In production, they would get copied to the `build` folder.
// This loader doesn't use a "test" so it will catch all modules
// that fall through the other loaders.
{
// Exclude `js` files to keep "css" loader working as it injects
// its runtime that would otherwise processed through "file" loader.
// Also exclude `html` and `json` extensions so they get processed
// by webpacks internal loaders.
exclude: [/\.(js|jsx|mjs)$/, /\.html$/, /\.json$/],
loader: require.resolve('file-loader'),
options: {
name: 'static/media/[name].[hash:8].[ext]',
},
},
],
},
// ** STOP ** Are you adding a new loader?
// Make sure to add the new loader(s) before the "file" loader.
],
},
plugins: [
// Makes some environment variables available in index.html.
// The public URL is available as %PUBLIC_URL% in index.html, e.g.:
// <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
// In development, this will be an empty string.
new InterpolateHtmlPlugin(env.raw),
// Generates an `index.html` file with the <script> injected.
new HtmlWebpackPlugin({
inject: true,
template: paths.appHtml,
}),
// Add module names to factory functions so they appear in browser profiler.
new webpack.NamedModulesPlugin(),
// Makes some environment variables available to the JS code, for example:
// if (process.env.NODE_ENV === 'development') { ... }. See `./env.js`.
new webpack.DefinePlugin(env.stringified),
// This is necessary to emit hot updates (currently CSS only):
new webpack.HotModuleReplacementPlugin(),
// Watcher doesn't work well if you mistype casing in a path so we use
// a plugin that prints an error when you attempt to do this.
// See https://github.com/facebookincubator/create-react-app/issues/240
new CaseSensitivePathsPlugin(),
// If you require a missing module and then `npm install` it, you still have
// to restart the development server for Webpack to discover it. This plugin
// makes the discovery automatic so you don't have to restart.
// See https://github.com/facebookincubator/create-react-app/issues/186
new WatchMissingNodeModulesPlugin(paths.appNodeModules),
// Moment.js is an extremely popular library that bundles large locale files
// by default due to how Webpack interprets its code. This is a practical
// solution that requires the user to opt into importing specific locales.
// https://github.com/jmblog/how-to-optimize-momentjs-with-webpack
// You can remove this if you don't use Moment.js:
new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
],
// Some libraries import Node modules but don't use them in the browser.
// Tell Webpack to provide empty mocks for them so importing them works.
node: {
dgram: 'empty',
fs: 'empty',
net: 'empty',
tls: 'empty',
child_process: 'empty',
},
// Turn off performance hints during development because we don't do any
// splitting or minification in interest of speed. These warnings become
// cumbersome.
performance: {
hints: false,
},
};
This is my webpack config file. I tried looking around and some people seem use ~ which doesnt work on my app, seems like my app doesnt know what ~ is. Some people seem to use import !style-loader!css-loader etc... but it doesnt work in my app as well.. it looks like my app doesnt know what to do with the !. It will not compile. I have been searching for days and i can't seem to figure it out.
btw i'm new to this webpack react stuff, if you answer something please try to include as much detail as possible so i can understand it. thank you!
I started my app with create-react-app and then did eject on the app to get access to the config files..
I can't find how to make vendor scripts load before my own scripts. In manifest.json I tried:
"dependencies": {
"main.js": {
"files": [
"scripts/vendor_script.js",
"scripts/custom_script.js"
],
"main": true
},
Doesn't work: vendor script is called after my custom script. Also tried:
"dependencies": {
"plugins.js": {
"files": [
"scripts/vendor/owl.carousel.min.js"
]
},
"main.js": {
"files": [
"scripts/main.js"
],
"main": true
},
Same. Any suggestion?
[EDIT] my current manifest.json file, where I followed the advice from https://discourse.roots.io/t/custom-javascript-in-manifest-json-and-building-out-into-a-single-file/3316:
{
"dependencies": {
"main.js": {
"vendor": [
"scripts/vendor/owl.carousel.min.js"
],
"files": [
"scripts/main.js"
],
"main": true
},
"main.css": {
"files": [
"styles/main.scss",
"styles/vendor/font-awesome.min.css",
"styles/vendor/owl.carousel.min.css"
],
"main": true
},
"customizer.js": {
"files": [
"scripts/customizer.js"
]
},
"jquery.js": {
"bower": ["jquery"]
}
},
"config": {
"devUrl": "http://127.0.0.1/pot/"
}
}
[EDIT #2]
$ node
> require('asset-builder')('./assets/manifest.json').globs.js
require('asset-builder')('./assets/manifest.json').globs.js
[ { type: 'js',
name: 'main.js',
globs:
[ 'D:\\EasyPHP\\www\\pot\\wp-content\\themes\\pot\\bower_components\\bootstrap-sass\\assets\\javascripts\\bootstrap\\transition.js',
'D:\\EasyPHP\\www\\pot\\wp-content\\themes\\pot\\bower_components\\bootstrap-sass\\assets\\javascripts\\bootstrap\\alert.js',
'D:\\EasyPHP\\www\\pot\\wp-content\\themes\\pot\\bower_components\\bootstrap-sass\\assets\\javascripts\\bootstrap\\button.js',
'D:\\EasyPHP\\www\\pot\\wp-content\\themes\\pot\\bower_components\\bootstrap-sass\\assets\\javascripts\\bootstrap\\carousel.js',
'D:\\EasyPHP\\www\\pot\\wp-content\\themes\\pot\\bower_components\\bootstrap-sass\\assets\\javascripts\\bootstrap\\collapse.js',
'D:\\EasyPHP\\www\\pot\\wp-content\\themes\\pot\\bower_components\\bootstrap-sass\\assets\\javascripts\\bootstrap\\dropdown.js',
'D:\\EasyPHP\\www\\pot\\wp-content\\themes\\pot\\bower_components\\bootstrap-sass\\assets\\javascripts\\bootstrap\\modal.js',
'D:\\EasyPHP\\www\\pot\\wp-content\\themes\\pot\\bower_components\\bootstrap-sass\\assets\\javascripts\\bootstrap\\tooltip.js',
'D:\\EasyPHP\\www\\pot\\wp-content\\themes\\pot\\bower_components\\bootstrap-sass\\assets\\javascripts\\bootstrap\\popover.js',
'D:\\EasyPHP\\www\\pot\\wp-content\\themes\\pot\\bower_components\\bootstrap-sass\\assets\\javascripts\\bootstrap\\scrollspy.js',
'D:\\EasyPHP\\www\\pot\\wp-content\\themes\\pot\\bower_components\\bootstrap-sass\\assets\\javascripts\\bootstrap\\tab.js',
'D:\\EasyPHP\\www\\pot\\wp-content\\themes\\pot\\bower_components\\bootstrap-sass\\assets\\javascripts\\bootstrap\\affix.js',
'scripts/vendor/owl.carousel.min.js',
'assets/scripts/main.js' ] },
{ type: 'js',
name: 'customizer.js',
globs: [ 'assets/scripts/customizer.js' ] },
{ type: 'js',
name: 'jquery.js',
globs: [ 'D:\\EasyPHP\\www\\pot\\wp-content\\themes\\pot\\bower_components\\jquery\\dist\\jquery.js' ] } ]
The script I'm trying to use is Owl Carousel. If I add the following in head.php it works fine:
<script src="<?php bloginfo("template_url"); ?>/assets/scripts/vendor/owl.carousel.min.js" type="text/javascript" charset="utf-8"></script>
If, instead, I set my manifest.json as shown previously I get a ".owlCarousel is not a function" in Firebug and my slider doesn't work.
Note: I didn't use Bowel, it's not mandatory in regular Sage workflow right? I just copied owl.carousel.min.js into assets/scripts/vendor/.
On a fresh Sage 8 installation I was able to quickly install OwlCarousel using Bower, exactly as described in the Sage documentation without any issue; its script and styles were both correctly included before project scripts and styles.
Font Awesome requires a Bower override because its default Bower main property instructs Bower to use a LESS and a SCSS file; once I set it to just use SCSS it worked fine. Sage 8 ships with a working set of Bower overrides which you should use as an example. See here.
Something else is going wrong with your scripts or your asset builder setup if you're unable to manually add scripts in the correct order. I suspect your asset paths may be incorrect. The best way to troubleshoot and ensure your manifest points to the correct asset paths is to start an interactive node session in a new terminal window.
First run (in your theme dir):
node
Then run (also in your theme dir):
require('asset-builder')('./assets/manifest.json').globs.js
or (still in your theme dir):
require('asset-builder')('./assets/manifest.json').globs.css
The output will display both the assets' paths and the order they're being included.
If you modify manifest.json while running the gulp watch task it may be necessary to halt the task, run a default gulp build, and then restart your gulp watch task.
If you still have difficulty after viewing the asset-builder output using the steps above then please post (either here or on the Roots forum) the output here along with the installation steps you took when installing the vendor scripts and custom scripts you're attempting to use so that someone can attempt to recreate your environment.