刚刚创建了一个全新的 Rails 应用程序,并在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:
{
}
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
运行./bin/webpack
后,它建议我通过yarn add -D
安装webpack-cli。
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'
]
我没有 manifest.json
- 这不是应该自动创建的吗?
有什么想法吗?
最佳答案
问题来自于您本地计算机上的node版本。当您创建 Rails 应用程序时,您可能会弹出如下错误:
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 > <a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="deb8b2bfaaaabbb09eeff0eef0ec" rel="noreferrer noopener nofollow">[email protected]</a>: I wrote this module a very long time ago; you should use something else.
[2/4] 🚚 Fetching packages...
error <a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="fe999b8ad39d9f92929b8cd39897929bbeccd0ced0cb" rel="noreferrer noopener nofollow">[email protected]</a>: 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.
要解决此问题,请首先确认您的节点版本,以确保它不是 9.x.x
:
节点-v
再次检查版本。如果是 12.10
或更高版本,那么您应该已准备就绪。
开始另一个全新的 Rails 项目,它应该可以正常工作。
祝你好运!
关于javascript - 为新的 Rails 应用程序运行服务器时出现 Webpacker 错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/62684616/