I am trying to use components from http://react-components.com (eg. react-youtube) in Reagent based application, but probably my naive approach is not the right one. I tried to install NPM packages with lein-npm module, include script in html page and use them via reagent/adapt-react-class as in this SO question. But for except this sample I wasn't successful.
Usually I get errors like "require/import/module is not defined" or "Youtube is undefined" (by having (def yt-test [] (r/adapt-react-class js/Youtube)). I am confused about what is needed to do. I read something about webpack/browserify, saw cljsjs packages - are those required in order to make this working?
I wrote a step by step guide on how to achieve this with webpack:
blob.tomerweller.com/reagent-import-react-components-from-npm
The general concept is the same as #scttnlsn suggested: bundle all npm packages in an external JS file and expose them through the global window object.
Those components are packaged as CommonJS modules. One approach for accessing CommonJS modules from ClojureScript is to bundle them into a single JavaScript file that can be included with your ClojureScript build.
You'll need to create a JavaScript entry point file which requires your various NPM dependencies and exposes them to ClojureScript (for example, by setting them on window). Create a file (let's call it index.js) containing:
window.YouTube = require('react-youtube');
Then use a tool like Browserify to bundle your entry point file and all of the dependencies it requires:
npm install -g browserify
browserify index.js --standalone window > bundle.js
Include bundle.js in your ClojureScript build and you'll be able to access the React component from ClojureScript via js/YouTube
Related
I'm creating a lit-element that has an external javascript dependency (npm module) that is not packaged as an es6 module. What is the recommended way of loading this dependency?
Should I just use a script tag in my index.html that references the cdn version of this module
//index.html
<script src="cdnToexternalJavascriptDependcy"></script>
but that would not encapsulate the dependency within the lit-element.
In Polymer, we can just use HTMLImports inside a html file and "import" it which would handle deduplication of dependencies.
For lit-element, what is the recommended way of encapsulating this "non-es6-module" dependency within my custom lit-element without using a bundler like webpack?
You can load it as normal script. If you load it from CDN it will not be included in the bundle. If you load it from node_modules folder when you use polymer build it'll bundle the dependency.
My static website built using Gatsby utilizes a number of node_modules that use es6. From what I understand, I am facing the issue that is talked about in this link https://github.com/gatsbyjs/gatsby/issues/3780 where my gatsby build fails because uglify is not able to handle es6, and the babel presets built into gatsby do not transpile the node_modules. My initial thought was to edit the babel presets to include the node_modules, but I got a bunch of new errors on gatsby build that looked like this Module build failed: Error: Couldn't find preset. What other solutions can I try?
After trying a number of different solutions, I ended up copying the offending node packages locally and requiring the local versions instead of the node_modules version. This way I could transpile them myself to es5. This is a temporary solution until my team can move to using Gatsby 2 which will fix this problem in the future.
I have installed and used livescript and its prelude-ls library with bower successfully. I loaded prelude-browser-min.js:
// gulpfile
'static/bower_components/prelude-ls/browser/prelude-browser-min.js',
and I was able to import functions in my application code: {map, filter, lines} = require 'prelude-ls'.
Now I'm removing bower from my stack. I also install livescript and a prelude-ls package with npm but there is no prelude-browser-min.js file anymore (though the doc says to use that). As for javascript files there are a few under a lib directory: index.js, Obj.js, etc. I tried to load them all (prelude-ls/**/*.js) but there is a module.exports line somewhere in them and it fails to load my app ("module is not defined").
If there is no prelude-browser-min.js, how can I do ?
update: related issue: https://github.com/gkz/prelude-ls/issues/73
Allright, I'll keep bower for that then !
Can anyone point me to a tutorial that uses Polymer 2 and polymer-build from Polymer CLI? When I use any example in the polymer-starter-kit and use polymer serve, it works fine; but when I use polymer build and serve the bundled or unbundled directory, I get 404 errors. I have even updated to the newest alpha version of polymer-cli.
Also, using https://github.com/tony19/generator-polymer-init-2-x-app generators have the same problem.
I also spent quit a bit of time to figure this one out. Please use the polymer-cli#next instead of polymer-cli
Plain polymer-cli doesn't seem to have the latest build and optimizations to support Polymer 2.0#Preview related functionality.
You can install polymer-cli#next. In Ubuntu, you can simply use npm install -g polymer-cli#next
Then on, the bundled and unbundled versions of the application generated through polymer build would just works fine.
Edit:
You can find my sample Polymer2.0#Preview version of the code at https://github.com/phani1kumar/phani1kumar.github.io branch is "devmaster".
the sw-precache-config.js is initial render-blocking. This will load all the resources that the main page needs to make the app available for offline use. src/lazy-resources.html loads resources for the next routes.
You would need to get a proper configuration based on your layout and main page in the following 3 files:
sw-precache-config.js, polymer.json, src/lazy-resources.html. This is a practice followed in the shop app from Polymer team, you may opt to a different mechanism for lazy loading. The bottom-line for lazy loading is to load the resources after Polymer.RenderStatus.afterNextRender.
You may also find the following article interesting: https://medium.com/#marcushellberg/how-i-sped-up-the-initial-render-of-my-polymer-app-by-86-eeff648a3dc0#.pi2iucwzi
I noticed a bug in the generator in that the starter-kit subgenerator was missing a dependency on webcomponentsjs, which would cause an error with polymer-build. And as you discovered, polymer.json was also missing dependencies for the polyfill support of webcomponentsjs, which caused 404s on polyfilled browsers (such as Linux Chrome). That's all fixed now in v0.0.6.
You'll also need a version of polymer-build that does not try to uglify the JavaScript, which would fail due to its inability to recognize ES6. The new-build-flags branch of the polymer-cli repo replaces uglify with babili for ES6 minification (added in PR#525). You could check out that branch and build it yourself, or you could install it from here:
npm i -g tony19-contrib/polymer-cli#dist-new-build-flags
For convenience, this branch is added as a devDependency when generating the 2.0 starter kit with generator-polymer-init-2-x-app.
To build and serve a Polymer 2.0 Starter Kit project:
Generate a 2.0 Starter Kit (using generator-polymer-init-2-x-app, v0.0.6 or newer) by selecting 2-x-app - starter application template:
$ polymer init
? Which starter template would you like to use?
...
2-x-app - (2.0 preview) blank application template
2-x-app - (2.0 preview) blank element template
❯ 2-x-app - (2.0 preview) starter application template
After the project generator finishes, build the project with yarn build:
$ yarn build
info: Deleting build/ directory...
info: Generating build/ directory...
info: Build complete!
Note that the output is only build/, and no longer build/bundled/ and build/unbundled/.
Serve up the contents of the build directory, and automatically open a browser to it:
$ polymer serve build -o
You could also serve it with a different tool to verify that the build output would work outside of the context of any Polymer tools. Start a Python server in build/, and manually open a browser to it:
$ cd build
$ python -m SimpleHTTPServer
I am currently creating a portable consolidation of my workflow using Node-Webkit which has node.js embedded. Now my problem is getting grunt/gulp inside the project itself as it depends on the cli somewhat(avoidable, granted), and also is confusing to me on the architecture. Is it possible to find just a .js with grunt in it to include much like Jquery/Handlebars?
Is this all I need to just include and run?
No before that make sure you environment is up, get the package.json, GruntFile.js file. In GruntFile.js you can specify what you want to pre-process. For example jade,Less,coffee. It looks very much like a node function, for sample you can refer to link
Now to make this work you also need to install various contrib plugins as per your requirement. Then register every single task in GruntFile.js. It really speeds up the development.
grunt.loadNpmTasks('grunt-contrib-less');
grunt.loadNpmTasks('grunt-contrib-jade');
grunt.loadNpmTasks('grunt-contrib-coffee');
grunt.registerTask('test', ['jade', 'less','coffee']);
So to process less,jade,coffee, we need to run the module installations such as
npm install grunt --save-dev
npm install grunt <module name> --save-dev
There are many more interesting configurations to learn and documentation is really nice, please refer to getting started guide
This adds the required Grunt and grunt plugins to package.json