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index-new.js
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index-new.js
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const path = require('path')
const {
md5,
parseEntry,
normalizePath
} = require('@dcloudio/uni-cli-shared')
const generateApp = require('./generate-app')
const generateJson = require('./generate-json')
const generateComponent = require('./generate-component')
const emitFileCaches = {}
function emitFile (filePath, source, compilation) {
const emitFileMD5 = md5(filePath + source)
if (emitFileCaches[filePath] !== emitFileMD5) {
emitFileCaches[filePath] = emitFileMD5
compilation.assets[filePath] = {
size () {
return Buffer.byteLength(source, 'utf8')
},
source () {
return source
}
}
}
}
function addSubPackagesRequire (compilation) {
if (!process.env.UNI_OPT_SUBPACKAGES) {
return
}
const assetsKeys = Object.keys(compilation.assets)
Object.keys(process.UNI_SUBPACKAGES).forEach(root => {
const subPackageVendorPath = normalizePath(path.join(root, 'common/vendor.js'))
if (assetsKeys.indexOf(subPackageVendorPath) !== -1) {
// TODO 理论上仅需在分包第一个 js 中添加 require common vendor,但目前不同平台可能顺序不一致,
// 故 每个分包里的 js 里均添加一次 require
assetsKeys.forEach(name => {
if (
path.extname(name) === '.js' &&
name.indexOf(root) === 0 &&
name !== subPackageVendorPath
) {
const source = `require('${normalizePath(path.relative(path.dirname(name), subPackageVendorPath))}');` +
compilation.assets[name].source()
compilation.assets[name] = {
size () {
return Buffer.byteLength(source, 'utf8')
},
source () {
return source
}
}
}
})
}
})
}
class WebpackUniMPPlugin {
apply (compiler) {
compiler.hooks.emit.tapPromise('webpack-uni-mp-emit', compilation => {
return new Promise((resolve, reject) => {
addSubPackagesRequire(compilation)
generateJson(compilation)
// app.js,app.wxss
generateApp(compilation)
.forEach(({
file,
source
}) => emitFile(file, source, compilation))
generateComponent(compilation)
resolve()
})
})
compiler.hooks.invalid.tap('webpack-uni-mp-invalid', (fileName, changeTime) => {
if (fileName && typeof fileName === 'string' && path.basename(fileName) === 'pages.json') { // 重新解析 entry
try {
parseEntry()
} catch (e) {
console.error(e)
}
}
})
}
}
module.exports = WebpackUniMPPlugin