webpack/webpack

For questions please post on Stack Overflow and use the 'webpack' tag (http://stackoverflow.com/tags/webpack).

afrozMT

@afrozMT

I am using latest webpack version. I am unable to infer what it is for webpack for load a module when there is no loader/plugin involved.

Alexander Akait

@alexander-akait

A lot of modules without loaders took 56,412 ms

afrozMT

@afrozMT

Yes, thats what i am trying to undestand

when there is no loader involved, what is it webpack taking time then ?

Alexander Akait

@alexander-akait

on parsing import/export/require/module.exports

afrozMT

@afrozMT

OKay, so what could be reason(s) for such erroneous time. Any pointer ?

Alexander Akait

@alexander-akait

Maybe a lot of dependencies, hard to say without source

afrozMT

@afrozMT

/Users/afrozalam/Code/mt-coaching-ui/node_modules/@mindtickle/mt-ui-components/src/Icon/icon.config.json

this file is just a static map of constants:

{ "ADD": "add", "ADD2": "add2", "ADDCOMMENT": "addComment", "ALERT": "alert", "ANALYTICS": "Analytics", "ANNOUNCEMENT": "announcement", "ARROWUPDOWN": "arrowUpDown", "ARROWUPRIGHT": "arrowUpRight", "ASSET": "Asset", "ATTACHEMENT": "attachement", "ATTACHMENT": "attachment", "AUDIO": "audio", }

still it took 3,023 ms

Alexander Akait

@alexander-akait

maybe :smile:

afrozMT

@afrozMT

overall build time has increased, which justifies this :\

Alexander Akait

@alexander-akait

maybe you use import { something } from 'my.json'?

afrozMT

@afrozMT

yes we use this :
import ICON_MAP from './icon.config.json';

Alexander Akait

@alexander-akait

I mean named import: import { name } from 'something'

afrozMT

@afrozMT

nope we never did that.

just one instance if import

Alexander Akait

@alexander-akait

hm, need profile, it is easy and allow to solve problem fast

afrozMT

@afrozMT

do you mean CPU profile ?

Alexander Akait

@alexander-akait

no, code

will be great to look on configuration

afrozMT

@afrozMT

here is my webpack config if you want to have quick glance:
http://dpaste.com/0CJQZW5

babelrc :
http://dpaste.com/0H3PKEB

Alexander Akait

@alexander-akait

maybe using cache-loader for css-loader can decrease compilation time (solved in webpack@5)

afrozMT

@afrozMT

Intresting part is build time is drastically reduced when using babel6 . this problem came when i updared it to babel 7

Alexander Akait

@alexander-akait

maybe some plugins very slow

afrozMT

@afrozMT

all i ran was just just babel-upgrader script

Alexander Akait

@alexander-akait

try to profile, it can solve problem

Andrew Kvapil

@viluon

Hi, is this a good place to ask for help? What I'm dealing with doesn't seem to have an answer on StackOverflow

I'm basically trying to reimplement the i18n webpack plugin with the new APIs, but the documentation seems to be lacking at best

John Marinelli

@johnmarinelli

for TerserPlugin is there a way to configure the time that a file stays in the cache ? for example, if i run a webpack build, i would want the output from Terser to be cached for 1 day

KioriSun

@KioriSun

Hey guys, with webpack, is there a way to bundle only some "ES6 imports" into a file(single build), while leaving other files as independent module scripts to be loaded at runtime?
(This is with Typescript btw)

Each of these files might or might not have their own subfolders, etc.

Gregory Danko

@g-style

Hey Guys! Is there a way to add a hash to dynamically imported chunk name?
Example: () => import(/ webpackChunkName: "MainPage.[hash]" / './Pages/MainPage');

John Marinelli

@johnmarinelli

@g-style it looks like you can only use [index] and [request]: https://webpack.js.org/api/module-methods/#magic-comments
why do you want the hash name in the file? i think webpacks' chunk manifest already covers mapping from "MyFile.js" => "MyFile.h4sh.js". my company has a special mechanism for this, so i am not sure

Rob Christian

@robchristian

I'm having trouble finding examples or docs for compiling coffeescript with modern webpack. I have a legacy project I have to support with a fair number of coffeescript files. Also, the webpack docs mention coffee-script, this module is deprecated and points to coffeescript (no hyphen)

Paul Schreiber

@paulschreiber

If I have this webpack 3 config snippet:

        new webpack.optimize.CommonsChunkPlugin({
            name: uid,
            chunks: [ 'home', 'about' ]
        })

What would be the equivalent config for optimization.splitChunks in webpack 4?

Rob

@rm-rf-etc

Uhhhgg. I can't, for the life of me, get webpack file-loader to load files!!!
ERROR in Entry module not found: Error: Can't resolve './src' in '/Users/me/projectDir'

module.exports = [{
    mode: 'production',
    module: {
        rules: [{
            test: /\.(jpe?g|gif|png|svg|woff|ttf|wav|mp3)$/i,
            loader: 'file-loader',
            options: {
                name: '[path][name].[ext]',
            },
        }],
    },
}

Rob

@rm-rf-etc

Dude, WTH?? Webpack exits with an error code, EVEN THOUGH my files copied without error. W T H.

    ERROR in Entry module not found: Error: Can't resolve './src' in '/Users/me/company/assets'
error Command failed with exit code 2.

const buildConfigs = [{
    mode: 'development',
    plugins: [
        new CopyPlugin([{
            from: path.join(__dirname, './src/images/'),
            to: path.join(__dirname, './dist/images/'),
        }]),
    ],
}

Gregory Danko

@g-style

@johnmarinelli I need the hash name because of cache on prod. Every time we update production server, dynamically imported chunks needs to be updated on our clients machines but it doesn't happens because of cache.

Diego Gullo

@bizmate

Maybe not a webpack specific question but wondering if anyone can point me in the right direction. i am running yarn encore, ... components do import react, such as import React from 'react';
How can i make it a dependency without importing it so i can require it from a cdn and keep my scripts lean?

George Maged

@grgops_gitlab

Hi guys, I'm new to webpack, and I'm developing an npm chat package. I can't figure out the correct to make an external dependency. I tried the following for the styled-components package.

externals: { "styled-components": { commonjs: "styled-components", commonjs2: "styled-components" } }

However, when I try importing the package to my main react app. styled-components is not found in my package build file. I made sure styled-components is installed on my main react app

John Marinelli

@johnmarinelli

@bizmate https://webpack.js.org/configuration/externals/#externals

@g-style ahh i see. i think we had that same issue, so we use our own thing for that. we were using this plugin: https://github.com/soundcloud/chunk-manifest-webpack-plugin (webpack v3)

@rm-rf-etc try running webpack with --debug and --display-error-details; https://webpack.js.org/api/cli/#debug-options

yellow1912

@yellow1912

Hi guys, is there a way to completely disable url resolving when using the sass loader? Due to the way my project is setup, all the images, fonts paths inside the scss are already resolved before passing to webpack, so running resolve again will always result in error.

I was reading about resolve-url-loader but I don't see how it can help with the problem. Basically I want no url resolving at all

Anon Ymous

@burnt.orange.cap_gitlab

Hi guys,
Presently I am writing an es6 module which I am planning to bundle with webpack. The codebase which I am working on has a large frontend es5 codebase which is bundled outside webpack. I need to be able to use the es6 modules bundled by webpack in the existing es5 codebase.

Is there a way to export modules from webpack bundles to the global namespace?

I know we can use output.library: 'MyModule' for this, but if I have 3 modules A, B and C then using MyModule.A, MyModule.B,... seems a bit clunky.

I am new to webpack (and JS, haven't really worked on the frontend before)

March Works

@MarchWorks

I would like to send build progress to browser (through webpack-dev-middleware to eventSource) but I don't know how

compiler.apply(new webpack.ProgressPlugin(function(percentage, msg) {

}));
const devMiddleware = require('webpack-dev-middleware')(compiler, {
   logLevel: 'silent',
   publicPath: '/somePath/'
})

in the browser

const sse = new EventSource('/somePath/') // not sure what I should put here
sse.addEventListener('message', event => onSseMessage(event))

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