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chatGPT question and answer Webpack 5 multi-entry packaging how to specify the file name specified by the package file name
Question 1: How to specify the package file name for the multi-entry packaging of Webpack 5
Answer 1:
In Webpack 5, output.filenameoptions can be used to specify the file name rules after multi-entry packaging. output.filenameCan be a string or a function.
If output.filenameit is a string, placeholders can be used to specify the rules of the packaged file name, for example:
module.exports = {
entry: {
app: './src/index.js',
admin: './src/admin.js'
},
output: {
filename: '[name].[contenthash].js'
}
}
In this example, [name]the placeholder represents the entry name, and [contenthash]the placeholder represents the hash of the file content. Webpack 5 will generate the corresponding file name based on the entry name and file hash value.
If output.filenameit is a function, you can customize the generation rules of the file name. For example:
module.exports = {
entry: {
app: './src/index.js',
admin: './src/admin.js'
},
output: {
filename: (pathData) => {
return `${
pathData.chunk.name}-[contenthash].js`;
}
}
}
In this example, output.filenameit is a function, and the parameters of the function pathDatacontain information related to the file path, such as chunkthe attribute indicating the information of the current chunk. The string returned by the function is the packaged file name.
No matter which method is used, Webpack 5 will generate the corresponding file name according to the specified file name rules, so as to realize the regulation of the file name after multi-entry packaging.
Q2: I want to specify the file name of the app as leaf, can I
Answer 2:
Yes, you can output.filenameuse 'leaf.[contenthash].js'or in the options 'leaf.js'to specify the packaged file name leaf.js, for example:
module.exports = {
entry: {
app: './src/index.js'
},
output: {
filename: 'leaf.[contenthash].js'
}
}
or:
module.exports = {
entry: {
app: './src/index.js'
},
output: {
filename: 'leaf.js'
}
}
In both examples, Webpack 5 will name the bundled appentry's filename as leaf.[contenthash].jsor leaf.js, depending on the filename convention you choose.
Question 3: The example you gave is a single entry, but my project has multiple entries. I want to specify one of them as the file name I specified
Answer 3:
For multiple entries, you can entryspecify a different filename for each entry by specifying the name of the corresponding entry in the object. For example:
module.exports = {
entry: {
app: './src/index.js',
leaf: './src/leaf.js'
},
output: {
filename: (pathData) => {
if (pathData.chunk.name === 'leaf') {
return 'leaf-custom-name.js';
}
return '[name].[contenthash].js';
}
}
}
In this example, we leafspecify leaf-custom-name.jsthe filename for the entry in case of multiple entries. We output.filenamepass a function in the option pathData.chunk.nameto judge whether the name of the current chunk is correct according to the attribute leaf, and if so, return the specified file name, otherwise return the default file name.
When running webpack packaging, Webpack 5 will generate the corresponding file name according to this configuration file. appThe filename for the entry will be app.[contenthash].jsand leafthe filename for the entry will be leaf-custom-name.js.
Hope this example helps you understand how to specify different filenames for multiple entries.