# 模式
可选参数：none、development、production（默认）
module.exports = {
mode: "production",
};
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webpack --mode=production
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development：- 将
DefinePlugin中process.env.NODE_ENV的值设置为development。 - 启用
NamedChunksPlugin - 启用
NamedModulesPlugin
- 将
production：- 将
DefinePlugin中process.env.NODE_ENV的值设置为production。 - 启用
FlagDependencyUsagePlugin - 启用
FlagIncludedChunksPlugin - 启用
ModuleConcatenationPlugin - 启用
NoEmitOnErrorsPlugin - 启用
OccurrenceOrderPlugin - 启用
SideEffectsFlagPlugin - 启用
TerserPlugin
- 将
none：退出任何默认优化选项
# development
// webpack.development.config.js
module.exports = {
+ mode: 'development'
- devtool: 'eval',
- cache: true,
- performance: {
- hints: false
- },
- output: {
- pathinfo: true
- },
- optimization: {
- namedModules: true,
- namedChunks: true,
- nodeEnv: 'development',
- flagIncludedChunks: false,
- occurrenceOrder: false,
- sideEffects: false,
- usedExports: false,
- concatenateModules: false,
- splitChunks: {
- hidePathInfo: false,
- minSize: 10000,
- maxAsyncRequests: Infinity,
- maxInitialRequests: Infinity,
- },
- noEmitOnErrors: false,
- checkWasmTypes: false,
- minimize: false,
- },
- plugins: [
- new webpack.NamedModulesPlugin(),
- new webpack.NamedChunksPlugin(),
- new webpack.DefinePlugin({ "process.env.NODE_ENV": JSON.stringify("development") }),
- ]
}
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点击查看 webpack v5 差异
// webpack.development.config.js
module.exports = {
mode: 'development'
devtool: 'eval',
cache: true,
performance: {
hints: false
},
output: {
pathinfo: true
},
optimization: {
namedModules: true,
namedChunks: true,
nodeEnv: 'development',
flagIncludedChunks: false,
occurrenceOrder: false,
- sideEffects: false,
- usedExports: false,
concatenateModules: false,
splitChunks: {
hidePathInfo: false,
minSize: 10000,
maxAsyncRequests: Infinity,
maxInitialRequests: Infinity,
},
noEmitOnErrors: false,
checkWasmTypes: false,
minimize: false,
+ removeAvailableModules: false
},
plugins: [
new webpack.NamedModulesPlugin(),
new webpack.NamedChunksPlugin(),
new webpack.DefinePlugin({ "process.env.NODE_ENV": JSON.stringify("development") }),
]
}
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# production
// webpack.production.config.js
module.exports = {
+ mode: 'production',
- performance: {
- hints: 'warning'
- },
- output: {
- pathinfo: false
- },
- optimization: {
- namedModules: false,
- namedChunks: false,
- nodeEnv: 'production',
- flagIncludedChunks: true,
- occurrenceOrder: true,
- sideEffects: true,
- usedExports: true,
- concatenateModules: true,
- splitChunks: {
- hidePathInfo: true,
- minSize: 30000,
- maxAsyncRequests: 5,
- maxInitialRequests: 3,
- },
- noEmitOnErrors: true,
- checkWasmTypes: true,
- minimize: true,
- },
- plugins: [
- new TerserPlugin(/* ... */),
- new webpack.DefinePlugin({ "process.env.NODE_ENV": JSON.stringify("production") }),
- new webpack.optimize.ModuleConcatenationPlugin(),
- new webpack.NoEmitOnErrorsPlugin()
- ]
}
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# none
// webpack.custom.config.js
module.exports = {
+ mode: 'none',
- performance: {
- hints: false
- },
- optimization: {
- flagIncludedChunks: false,
- occurrenceOrder: false,
- sideEffects: false,
- usedExports: false,
- concatenateModules: false,
- splitChunks: {
- hidePathInfo: false,
- minSize: 10000,
- maxAsyncRequests: Infinity,
- maxInitialRequests: Infinity,
- },
- noEmitOnErrors: false,
- checkWasmTypes: false,
- minimize: false,
- },
- plugins: []
}
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点击查看 webpack v5 差异
// webpack.custom.config.js
module.exports = {
mode: 'none',
performance: {
hints: false
},
optimization: {
flagIncludedChunks: false,
occurrenceOrder: false,
- sideEffects: false,
- usedExports: false,
concatenateModules: false,
splitChunks: {
hidePathInfo: false,
minSize: 10000,
maxAsyncRequests: Infinity,
maxInitialRequests: Infinity,
},
noEmitOnErrors: false,
checkWasmTypes: false,
minimize: false,
},
plugins: []
}
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