copy-webpack-plugin's error

[hellokey-key]

you can see the Configuration，if you 'npm run build', the terminal will get error ' this.patterns.map() Cannot read properties of undefined (reading 'map')' let us see the source of copy-webpack-plugin, it is show ``` this.patterns = options.patterns; ``` at line 185 , we console the result shows ``[ { patterns: [ [Object], [Object] ] } ]``, so it may be `` this.patterns = options[0].patterns;`` is perfect，Please see if it is correct. We look forward to your reply。

[hellokey-key]

[hellokey-key]

the plugin's version is ^11.0.0, but is the version for webpack is ^5.74.0 and webpack-cli is ^4.10.0, all is latest , why it runs error?

[alexander-akait]

Can you provide small reproducible repo? thank you

[hellokey-key]

`const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const { CleanWebpackPlugin } = require('clean-webpack-plugin')
const webpack = require('webpack');
const CopyWebpackPlugin = require('copy-webpack-plugin');

const RemoveWebpackPlugin = require('./src/remove-webpack-plugin');

module.exports = {
mode: 'development',
entry: {
index: "./src/index.js",
add: "./src/add.js",
// css: './src/common.js'
},
output: {
path: path.resolve(__dirname,'build'),
filename: '[name].[chunkhash].js',
publicPath: './'
},
devtool: "source-map",
plugins:[
new RemoveWebpackPlugin(),
new CleanWebpackPlugin(),
// new HtmlWebpackPlugin({
// filename: 'anout.html',
// template: './aout.html'
// }),
new HtmlWebpackPlugin({
titie: 'title',
template: './index.html',
meta:{
viewport: 'width=device-width, initial-scale=2.0'
},
filename: 'main.html',
publicPath: './',
scriptLoading: 'module'
}),
new CopyWebpackPlugin([
{
patterns:[
{
from: path.resolve(__dirname, './static'),
to: path.resolve(__dirname, 'build/static')
},
]
}
])
],
module:{
rules:[
{
test:/.css$/,
use:[
'style-loader',
'css-loader'
]
},
{
test:/.md$/,
use:[
{
loader: 'html-loader'
},
{
loader: './src/mkdown-loader.js',
options: {
author: 'hello loader',
email: 'helloloader@qq.com',
name: '张三'
}
}
]
}
]
},
devServer: {
static: {
directory: path.join(__dirname, 'build'),
},
compress: true,
port: 9000,
proxy: {
"/api": {
target: "https://apix.com/xx/xx",
pathReWrite: {
"^/api":''
},
changeOrigin: true,
hot: true
},
},
},

}
`

by the way，the file directory is like this, which I added later and has nothing to do with the process，you can try it。

[alexander-akait]

Can you use github for this, because it is hard to read

[hellokey-key]

oh，i am sorry ,but you can copy these code into your vscode, let me see, you may write the same file to test。