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split-chunks.js
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split-chunks.js
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const path = require('path')
module.exports = function getSplitChunks () {
if (!process.env.UNI_USING_COMPONENTS) {
return {
cacheGroups: {
commons: {
minChunks: 2,
name: 'common/vendor',
chunks: 'all'
}
}
}
}
const {
normalizePath
} = require('@dcloudio/uni-cli-shared')
const mainPath = normalizePath(path.resolve(process.env.UNI_INPUT_DIR, 'main.'))
if (!process.env.UNI_OPT_SUBPACKAGES) {
return {
chunks (chunk) { // 防止 node_modules 内 vue 组件被 split
return chunk.name.indexOf('node-modules') !== 0
},
cacheGroups: {
default: false,
vendors: false,
commons: {
test (module) {
if (module.type === 'css/mini-extract') {
return false
}
if (module.resource && (
module.resource.indexOf('.vue') !== -1 ||
module.resource.indexOf('.nvue') !== -1 ||
normalizePath(module.resource).indexOf(mainPath) === 0 // main.js
)) {
return false
}
return true
},
minChunks: 1,
name: 'common/vendor',
chunks: 'all'
}
}
}
}
function baseTest (module) {
if (module.type === 'css/mini-extract') {
return false
}
if (module.resource) {
const resource = normalizePath(module.resource)
if (
resource.indexOf('.vue') !== -1 ||
resource.indexOf('.nvue') !== -1 ||
resource.indexOf(mainPath) === 0 // main.js
) {
return false
}
}
return true
}
// TODO 独立分包
const cacheGroups = {
default: false,
vendors: false,
commons: {
test (module, chunks) {
if (!baseTest(module)) {
return false
}
const matchSubPackagesCount = findSubPackages(chunks).size
const isMainPackage = ( // 非分包 或 两个及以上分包 或 主包内有使用
matchSubPackagesCount === 0 ||
matchSubPackagesCount > 1 ||
(
matchSubPackagesCount === 1 &&
hasMainPackage(chunks)
)
)
if (isMainPackage && process.env.UNI_OPT_TRACE) {
console.log('main', module.resource, chunks.map(chunk => chunk.name))
}
return isMainPackage
},
minSize: 0,
minChunks: 1,
name: 'common/vendor',
chunks: 'all'
}
}
const findSubPackages = function (chunks) {
return chunks.reduce((pkgs, item) => {
const name = normalizePath(item.name)
const pkgRoot = subPackageRoots.find(root => name.indexOf(root) === 0)
pkgRoot && pkgs.add(pkgRoot)
return pkgs
}, new Set())
}
const hasMainPackage = function (chunks) {
return chunks.find(item => !subPackageRoots.find(root => item.name.indexOf(root) === 0))
}
const subPackageRoots = Object.keys(process.UNI_SUBPACKAGES)
Object.keys(process.UNI_SUBPACKAGES).forEach(root => {
(function (root) {
cacheGroups[root + '/commons'] = {
test (module, chunks) {
if (!baseTest(module)) {
return false
}
const matchSubPackages = findSubPackages(chunks)
if (
matchSubPackages.size === 1 &&
matchSubPackages.has(root) &&
!hasMainPackage(chunks)
) {
if (process.env.UNI_OPT_TRACE) {
console.log(root, module.resource, chunks.map(chunk => chunk.name))
}
return true
}
},
minSize: 0,
minChunks: 1,
name: normalizePath(path.join(root, 'common/vendor')),
chunks: 'all'
}
})(root)
})
return {
chunks (chunk) { // 防止 node_modules 内 vue 组件被 split
return chunk.name.indexOf('node-modules') !== 0
},
cacheGroups
}
}