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How to exclude Express view engines from Webpack bundle

I'm bundling my CLI app using Webpack v4. One of the dependencies is Express, and this causes a warning:
WARNING in ./node_modules/express/lib/view.js 81:13-25
Critical dependency: the request of a dependency is an expression
# ./node_modules/express/lib/application.js
# ./node_modules/express/lib/express.js
# ./node_modules/express/index.js
That comes from this line within Express:
/**
* Initialize a new `View` with the given `name`.
*
* Options:
*
* - `defaultEngine` the default template engine name
* - `engines` template engine require() cache
* - `root` root path for view lookup
*
* #param {string} name
* #param {object} options
* #public
*/
function View(name, options) {
var opts = options || {};
this.defaultEngine = opts.defaultEngine;
this.ext = extname(name);
// ...
if (!opts.engines[this.ext]) {
// load engine
var mod = this.ext.substr(1)
debug('require "%s"', mod)
// default engine export
var fn = require(mod).__express // <-- this require is the problem
There's quite a few questions asking about how to fix this by not bundling express at all, or not bundling anything from node_modules.
For me that would defeat the point (I'm trying to shrink my deployed file footprint), so I want to fix this whilst keeping express inside my bundle. In my case I don't use view engines at all, and this require exists solely to load view engines on demand, so I really just want the warning to go away.
If I'm confident that this require will never be called, how can I tell webpack to ignore it completely?

What you could maybe try is alter you webpack config module rules so that
view unit uses the null-loader
This will of course make View return null but if you never touch views it might be ok.
example.
rules: [
{
test: require.resolve("express/view"),
use: 'null-loader',
},
],
Looking at application
this.set('view', View); hopefully View been null here doesn't cause issues.
The only other place View is then mentioned in application is then in render that you say your not using. So fingers crossed this won't cause any side effects.

Generate multi APK in react native?

I have some issue with generated an APK in Android,
I'm generating a release in my react native project by using this command
./gradlew assembleRelease
After released I got more than one APK,
so what is that? and which one is the right!
I'm trying to run it in my real device but every single one Crashed!
version react-native:"0.59.8"
And here file app/build.gradle
apply plugin: "com.android.application"
import com.android.build.OutputFile
/**
* The react.gradle file registers a task for each build variant (e.g. bundleDebugJsAndAssets
* and bundleReleaseJsAndAssets).
* These basically call `react-native bundle` with the correct arguments during the Android build
* cycle. By default, bundleDebugJsAndAssets is skipped, as in debug/dev mode we prefer to load the
* bundle directly from the development server. Below you can see all the possible configurations
* and their defaults. If you decide to add a configuration block, make sure to add it before the
* `apply from: "../../node_modules/react-native/react.gradle"` line.
*
* project.ext.react = [
* // the name of the generated asset file containing your JS bundle
* bundleAssetName: "index.android.bundle",
*
* // the entry file for bundle generation
* entryFile: "index.android.js",
*
* // whether to bundle JS and assets in debug mode
* bundleInDebug: false,
*
* // whether to bundle JS and assets in release mode
* bundleInRelease: true,
*
* // whether to bundle JS and assets in another build variant (if configured).
* // See http://tools.android.com/tech-docs/new-build-system/user-guide#TOC-Build-Variants
* // The configuration property can be in the following formats
* // 'bundleIn${productFlavor}${buildType}'
* // 'bundleIn${buildType}'
* // bundleInFreeDebug: true,
* // bundleInPaidRelease: true,
* // bundleInBeta: true,
*
* // whether to disable dev mode in custom build variants (by default only disabled in release)
* // for example: to disable dev mode in the staging build type (if configured)
* devDisabledInStaging: true,
* // The configuration property can be in the following formats
* // 'devDisabledIn${productFlavor}${buildType}'
* // 'devDisabledIn${buildType}'
*
* // the root of your project, i.e. where "package.json" lives
* root: "../../",
*
* // where to put the JS bundle asset in debug mode
* jsBundleDirDebug: "$buildDir/intermediates/assets/debug",
*
* // where to put the JS bundle asset in release mode
* jsBundleDirRelease: "$buildDir/intermediates/assets/release",
*
* // where to put drawable resources / React Native assets, e.g. the ones you use via
* // require('./image.png')), in debug mode
* resourcesDirDebug: "$buildDir/intermediates/res/merged/debug",
*
* // where to put drawable resources / React Native assets, e.g. the ones you use via
* // require('./image.png')), in release mode
* resourcesDirRelease: "$buildDir/intermediates/res/merged/release",
*
* // by default the gradle tasks are skipped if none of the JS files or assets change; this means
* // that we don't look at files in android/ or ios/ to determine whether the tasks are up to
* // date; if you have any other folders that you want to ignore for performance reasons (gradle
* // indexes the entire tree), add them here. Alternatively, if you have JS files in android/
* // for example, you might want to remove it from here.
* inputExcludes: ["android/**", "ios/**"],
*
* // override which node gets called and with what additional arguments
* nodeExecutableAndArgs: ["node"],
*
* // supply additional arguments to the packager
* extraPackagerArgs: []
* ]
*/
project.ext.react = [
entryFile: "index.js"
]
apply from: "../../node_modules/react-native/react.gradle"
/**
* Set this to true to create two separate APKs instead of one:
* - An APK that only works on ARM devices
* - An APK that only works on x86 devices
* The advantage is the size of the APK is reduced by about 4MB.
* Upload all the APKs to the Play Store and people will download
* the correct one based on the CPU architecture of their device.
*/
def enableSeparateBuildPerCPUArchitecture = true
/**
* Run Proguard to shrink the Java bytecode in release builds.
*/
def enableProguardInReleaseBuilds = false
android {
compileSdkVersion rootProject.ext.compileSdkVersion
buildToolsVersion rootProject.ext.buildToolsVersion
defaultConfig {
applicationId "com.AppOne"
minSdkVersion rootProject.ext.minSdkVersion
targetSdkVersion rootProject.ext.targetSdkVersion
versionCode 1
versionName "1.0"
}
signingConfigs {
release {
if (project.hasProperty('MYAPP_RELEASE_STORE_FILE')) {
storeFile file(MYAPP_RELEASE_STORE_FILE)
storePassword MYAPP_RELEASE_STORE_PASSWORD
keyAlias MYAPP_RELEASE_KEY_ALIAS
keyPassword MYAPP_RELEASE_KEY_PASSWORD
}
}
}
splits {
abi {
reset()
enable enableSeparateBuildPerCPUArchitecture
universalApk true // If true, also generate a universal APK
include "armeabi-v7a", "x86", "arm64-v8a"
}
}
buildTypes {
release {
minifyEnabled enableProguardInReleaseBuilds
proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
signingConfig signingConfigs.release
}
}
// applicationVariants are e.g. debug, release
applicationVariants.all { variant ->
variant.outputs.each { output ->
// For each separate APK per architecture, set a unique version code as described here:
// http://tools.android.com/tech-docs/new-build-system/user-guide/apk-splits
def versionCodes = ["armeabi-v7a":1, "x86":2, "arm64-v8a": 3]
def abi = output.getFilter(OutputFile.ABI)
if (abi != null) { // null for the universal-debug, universal-release variants
output.versionCodeOverride =
versionCodes.get(abi) * 1048576 + defaultConfig.versionCode
}
}
}
}
dependencies {
implementation project(':#react-native-community_async-storage')
implementation project(':react-native-fcm')
implementation project(':react-native-image-picker')
implementation project(':react-native-gesture-handler')
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation "com.android.support:appcompat-v7:${rootProject.ext.supportLibVersion}"
implementation "com.facebook.react:react-native:+" // From node_modules
// implementation "com.google.android.gms:play-services-base:16.0.1"
implementation 'com.facebook.fresco:fresco:1.12.0'
implementation 'com.facebook.fresco:animated-gif:1.12.0'
implementation "com.google.android.gms:play-services-base:16.1.0"
implementation project(':react-native-firebase')
// implementation "com.google.firebase:firebase-core:16.0.4"
implementation "com.google.firebase:firebase-auth:16.0.4"
implementation "com.google.firebase:firebase-database:16.0.1"
implementation "com.google.firebase:firebase-storage:16.0.1"
implementation "com.google.firebase:firebase-functions:16.0.1"
// implementation 'com.google.firebase:firebase-messaging:16.0.1'
implementation 'com.google.firebase:firebase-core:16.0.8'
implementation 'com.google.firebase:firebase-messaging:17.6.0'
implementation project(':react-native-fcm')
implementation project(':react-native-svg')
implementation project(':react-native-linear-gradient')
implementation project(':react-native-maps')
implementation project(':react-native-vector-icons')
}
// Run this once to be able to run the application with BUCK
// puts all compile dependencies into folder libs for BUCK to use
task copyDownloadableDepsToLibs(type: Copy) {
from configurations.compile
into 'libs'
}
project.ext.vectoricons = [
iconFontNames: [ 'MaterialIcons.ttf', 'Ionicons.ttf' ] // Name of the font files you want to copy
]
apply from: "../../node_modules/react-native-vector-icons/fonts.gradle"
apply plugin: 'com.google.gms.google-services'

You may have set this
def enableSeparateBuildPerCPUArchitecture = false|true
This will determine whether to generate multiple APKs for different CPU architectures or a single APK bundle that works on all devices despite the CPU you're running it on but at the cost of APK bundle size.

generated multiple apk in react-native but not able to upload
some error come like this version code already up there in play store console.
how i solve this>>>>
def enableSeparateBuildPerCPUArchitecture = true //by default false this generate mutiple apk as you defined in here include "armeabi-v7a", "x86", "arm64-v8a", "x86_64"
def enableProguardInReleaseBuilds = true // this reduce some amount of app size
def versionCodes = ["armeabi-v7a": 1, "x86": 2, "arm64-v8a": 3, "x86_64": 4]
def abi = output.getFilter(OutputFile.ABI)
if (abi != null) {// null for the universal-debug, universal-release variants
output.versionCodeOverride =
defaultConfig.versionCode * 1000 + versionCodes.get(abi)
}
uncomment this line in android>app>build.gradel
at time of build you may encounter some error like output file
add this line at top
apply plugin: "com.android.application"
import com.android.build.OutputFile //import this line

Call to undefined function asset() in Laravel project

I am trying to load my app.js file inside my welcome.blade.php but I get the following error:
Call to undefined function asset()
This is the instruction I used <script type="text/javascript" src="{{ asset('public/js/app.js') }}"></script>
What can be the problem? I also tried to run the same line without asset() and it does not work. My .js file is in the location I specified.
Thank you so much!

Process:
I am using Laravel 5.5 and had the same problem recently so I did a bit of debugging. Here are the steps:
Since the error was Call to undefined function asset() I checked the helpers.php in the Laravel repo to see if it existed. https://github.com/laravel/framework/blob/5.5/src/Illuminate/Foundation/helpers.php#L127 and it did.
if (! function_exists('asset')) {
/**
* Generate an asset path for the application.
*
* #param string $path
* #param bool $secure
* #return string
*/
function asset($path, $secure = null)
{
return app('url')->asset($path, $secure);
}
}
I looked on my local copy of Laravel and see if that same line existed, it did.
However my local copy was different than what was on the repo. This is how it looked:
if (! function_exists('asset')) {
/**
* Generate an asset path for the application.
*
* #param string $path
* #param bool $secure
* #return string
*/
function mixasset($path, $secure = null)
{
return app('url')->asset($path, $secure);
}
}
At some point, Laravel Mix seems to have changed asset() to mixasset().
Result:
Try using mixasset() as opposed to asset(). Otherwise delete your vendors folder and rebuild it by running composer install. This should get you the latest copy of your Laravel version with the correct asset() helper method.

The asset() is already point to your public folder so, don't specify the public in your asset()
Change your asset('public/js/app.js') to asset('js/app.js')

My Err: Call to undefined function set_active()...., when I move some functions in Laravel 5.2 to Laravel 6.x ...
My solution:
1. Added below in composer.json
"autoload": {
"classmap": [
"database"
],
"psr-4": {
"App\": "app/"
},
"files": [
"app/helpers.php" . => New added
]
}
2.run composer install
it works for me.

How to handle blocked scripts in requirejs

I am using require js to load google analytics.
In config I have
requirejs.config({
"paths": {
"ga": "//www.google-analytics.com/analytics",
...
And I have a module that depends on ga that initialises analytics.
Everything works fine until someone uses a browser plugin that blocks google analytics.
When that happens, the resulting javascript error breaks everything.
failed to load resource : blocked by clien
uncaught error: script error for: ga
How can I tell requirejs not to have a fit if a certain module fails to load?
How can you make a module optional?
Thanks.

require takes a 3rd argument which is an error callback, so you can assign window.ga to a function which always returns undefined. This avoids errors when calling google analytics functions elsewhere in your code.
require(['ga'], function(data) {
window.ga('create', 'UA-XXXXXXXX-X');
window.ga('send', 'pageview');
}, function() {
window.ga = function(){};
});

You could require the module within your own module code but outside of the module definiton requirements, but this does mean you can't quite as easily chain on dependencies you need. i.e.
define([ /* Normal dependencies here ... */], function() {
try {
require(['ga']);
} catch (error) {
// Handle lack of GA if needed
}
};
Alternatively you'd have to write your own module wrapper which synchronously blocks as it attempts the above, then returns GA if it was successful, or null otherwise.

I found the best way is to use the array notation for path definitions. This way you can define the external URL for the module, and a local fallback, in your requirejs path configuration. No need for additional try/catch blocks or module-specific error handling.
Documentation link:
http://requirejs.org/docs/api.html#pathsfallbacks
I defined a module named noop which defines an empty function, and then set up my paths like this:
requirejs.config({
"paths": {
"ga": [
"//www.google-analytics.com/analytics",
"util/noop"
],
...

The best solution, It works for me.
Open lib/mage/requirejs/resolver.js file.
/**
* Checks if provided module has unresolved dependencies.
*
* #param {Object} module - Module to be checked.
* #returns {Boolean}
*/
function isPending(module) {
return !!module.depCount;
}
Replace with this bellow code:
/**
* Checks if provided module is rejected during load.
*
* #param {Object} module - Module to be checked.
* #return {Boolean}
*/
function isRejected(module) {
return registry[module.id] && (registry[module.id].inited || registry[module.id].error);
}
/**
* Checks if provided module has unresolved dependencies.
*
* #param {Object} module - Module to be checked.
* #returns {Boolean}
*/
function isPending(module) {
if (!module.depCount) {
return false;
}
return module.depCount > _.filter(module.depMaps, isRejected).length;
}
Thanks

Change sails.js EJS views to use .html extensions instead of .ejs extensions?

Is it possible to configure sails.js apps to use .html extentions rather than .ejs (but still use the ejs view engine)?
sails new app creates ./views/home/index.ejs and ./views/layout.ejs.
I'd like to change the extensions to .html but keep everything else working the same way.
ie: I would now have ./views/home/index.html and ./views/layout.html, and the home page would still be injected into the layout page, as per normal.
How can I configure this please?

In your config/views.js:
engine: {
ext: 'html',
fn: require('ejs').renderFile
},
Seems though that the future support for this feature is not guaranteed, since they removed this from docs, so use with caution.

Another approach
Sails provides EJS templating by default.To override this and to use .html files , here is a simple solution. In your Sails App , go to config/routes.js. You will see following code there
module.exports.routes = {
/***************************************************************************
* *
* Make the view located at `views/homepage.ejs` (or `views/homepage.jade`, *
* etc. depending on your default view engine) your home page. *
* *
* (Alternatively, remove this and add an `index.html` file in your *
* `assets` directory) *
* *
***************************************************************************/
'/': {
view: 'homepage'
}
/***************************************************************************
* *
* Custom routes here... *
* *
* If a request to a URL doesn't match any of the custom routes above, it *
* is matched against Sails route blueprints. See `config/blueprints.js` *
* for configuration options and examples. *
* *
***************************************************************************/
};
Remove the route to '/' as shown below . Keep it blank
New routes.js will look like
module.exports.routes = {
//Remove '/' :)
};
Okay !!! now it’s done you can use your HTML files in Sails app . Put your index.html in assets folder . Sails will now load views from here :)

In latest sails.js 0.11, this also valid:
engine: 'ejs',
extension: 'html',
To check how they do this, in /node_modules/sails/lib/hooks/views/configure.js:
if (typeof sails.config.views.engine === 'string') {
var viewExt = sails.config.views.extension || sails.config.views.engine;
sails.config.views.engine = {
name: sails.config.views.engine,
ext: viewExt
};
}