[英]Webpacker error when running server for new Rails app
Just created a brand new Rails app and receiving this error when I run the server:刚刚创建了一个全新的 Rails 应用程序并在我运行服务器时收到此错误:
Webpacker can't find application.js in /public/packs/manifest.json. Possible causes:
1. You want to set webpacker.yml value of compile to true for your environment
unless you are using the `webpack -w` or the webpack-dev-server.
2. webpack has not yet re-run to reflect updates.
3. You have misconfigured Webpacker's config/webpacker.yml file.
4. Your webpack configuration is not creating a manifest.
Your manifest contains:
{
}
Here's my webpacker.yml
:这是我的webpacker.yml
:
# Note: You must restart bin/webpack-dev-server for changes to take effect
default: &default
source_path: app/javascript
source_entry_path: packs
public_output_path: packs
cache_path: tmp/cache/webpacker
webpack_compile_output: false
# Additional paths webpack should lookup modules
# ['app/assets', 'engine/foo/app/assets']
resolved_paths: []
# Reload manifest.json on all requests so we reload latest compiled packs
cache_manifest: false
extensions:
- .js
- .sass
- .scss
- .css
- .module.sass
- .module.scss
- .module.css
- .png
- .svg
- .gif
- .jpeg
- .jpg
development:
<<: *default
compile: true
# Reference: https://webpack.js.org/configuration/dev-server/
dev_server:
https: false
host: localhost
port: 3035
public: localhost:3035
hmr: false
# Inline should be set to true if using HMR
inline: true
overlay: true
compress: true
disable_host_check: true
use_local_ip: false
quiet: false
headers:
'Access-Control-Allow-Origin': '*'
watch_options:
ignored: '**/node_modules/**'
test:
<<: *default
compile: true
# Compile test packs to a separate directory
public_output_path: packs-test
production:
<<: *default
# Production depends on precompilation of packs prior to booting for performance.
compile: false
# Cache manifest.json for performance
cache_manifest: true
After running ./bin/webpack
, it recommended I install webpack-cli via yarn add -D
.运行./bin/webpack
后,建议我通过yarn add -D
安装 webpack-cli。 After I did this, I got the following error:执行此操作后,出现以下错误:
Error: Cannot find module 'webpack-cli'
Require stack:
- ../node_modules/webpack/bin/webpack.js
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:1030:15)
at Function.Module._load (internal/modules/cjs/loader.js:899:27)
at Module.require (internal/modules/cjs/loader.js:1090:19)
at require (internal/modules/cjs/helpers.js:75:18)
at ../node_modules/webpack/bin/webpack.js:143:5
at processTicksAndRejections (internal/process/task_queues.js:93:5) {
code: 'MODULE_NOT_FOUND',
requireStack: [
'../node_modules/webpack/bin/webpack.js'
]
I don't have a manifest.json
- shouldn't this have been created automatically?我没有manifest.json
- 这不应该是自动创建的吗?
Any ideas?有任何想法吗?
The problem comes from the version of node on your local computer.问题来自本地计算机上的节点版本。 When you created your rails app, you probably had an error like this pop up:当你创建你的 Rails 应用程序时,你可能会弹出这样的错误:
The JavaScript app source directory already exists
apply /Users/mconiaris/.rbenv/versions/2.6.4/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/install/binstubs.rb
Copying binstubs
exist bin
create bin/webpack
create bin/webpack-dev-server
append .gitignore
Installing all JavaScript dependencies [4.0.7]
run yarn add @rails/webpacker from "."
yarn add v1.17.3
info No lockfile found.
[1/4] 🔍 Resolving packages...
warning @rails/webpacker > postcss-preset-env > postcss-color-functional-notation > postcss-values-parser > flatten@1.0.2: I wrote this module a very long time ago; you should use something else.
[2/4] 🚚 Fetching packages...
error get-caller-file@2.0.5: The engine "node" is incompatible with this module. Expected version "6.* || 8.* || >= 10.*". Got "9.4.0"
error Found incompatible module.
info Visit https://yarnpkg.com/en/docs/cli/add for documentation about this command.
To fix the problem, first confirm your version of node to ensure that it's not 9.xx
:要解决此问题,请首先确认您的节点版本以确保它不是9.xx
:
node -v
Check the version again.再次检查版本。 If it's 12.10
or higher, you should be all set.如果它是12.10
或更高版本,那么您应该已准备就绪。
Go start another brand new rails project and it should work fine. Go 开始另一个全新的导轨项目,它应该可以正常工作。
Good luck!祝你好运!
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