100 行
3.0 KiB
JavaScript
100 行
3.0 KiB
JavaScript
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const fs = require('node:fs')
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const path = require('node:path')
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const { withXuqmConfig } = require('@xuqm/rn-common/metro')
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const MODULE_RANGE_SIZE = 10_000_000
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function readCache(file) {
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if (!fs.existsSync(file)) return {}
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try {
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return JSON.parse(fs.readFileSync(file, 'utf8'))
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} catch {
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return {}
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}
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}
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function writeCache(file, value) {
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fs.mkdirSync(path.dirname(file), { recursive: true })
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fs.writeFileSync(file, `${JSON.stringify(value, null, 2)}\n`)
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}
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function hasModule(cache, modulePath) {
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return Object.prototype.hasOwnProperty.call(cache, modulePath)
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}
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function isRuntimePrelude(modulePath) {
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return modulePath.includes('__prelude__') || modulePath.includes('polyfills')
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}
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function createModuleSerializer(environment = process.env) {
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const moduleId = environment.XUQM_MODULE_ID
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const moduleType = environment.XUQM_MODULE_TYPE
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if (!moduleId || !moduleType) return null
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const cacheFile = path.resolve(
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environment.XUQM_MODULE_CACHE_FILE ?? '.xuqm-cache/common-module-ids.json',
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)
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if (environment.XUQM_RESET_MODULE_CACHE === 'true') writeCache(cacheFile, {})
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const sharedCache = readCache(cacheFile)
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const writesSharedCache = moduleType === 'startup' || moduleType === 'common'
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const moduleIndex = Number.parseInt(environment.XUQM_MODULE_INDEX ?? '0', 10)
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let nextId = writesSharedCache
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? Object.values(sharedCache).reduce((maximum, value) => Math.max(maximum, Number(value)), -1) +
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1
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: (Number.isFinite(moduleIndex) && moduleIndex >= 0 ? moduleIndex + 1 : 1) * MODULE_RANGE_SIZE
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const localIds = new Map()
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return {
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createModuleIdFactory() {
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return modulePath => {
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if (hasModule(sharedCache, modulePath)) return sharedCache[modulePath]
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const existing = localIds.get(modulePath)
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if (existing !== undefined) return existing
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const id = nextId++
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localIds.set(modulePath, id)
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if (writesSharedCache) {
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sharedCache[modulePath] = id
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writeCache(cacheFile, sharedCache)
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}
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return id
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}
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},
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processModuleFilter(module) {
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if (moduleType === 'startup') return true
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if (isRuntimePrelude(module.path)) return false
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return !hasModule(sharedCache, module.path)
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},
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}
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}
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/**
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* 同一份 Metro 配置同时服务日常开发和插件构建。CLI 构建插件时注入模块上下文；
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* 普通 `pnpm android/start` 没有这些变量，因此保持标准 React Native 行为。
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*/
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function withXuqmModuleConfig(metroConfig) {
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const configured = withXuqmConfig(metroConfig)
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const moduleSerializer = createModuleSerializer()
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if (!moduleSerializer) return configured
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const configuredFilter = configured.serializer?.processModuleFilter
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return {
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...configured,
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serializer: {
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...configured.serializer,
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...moduleSerializer,
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processModuleFilter(module) {
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return (
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(configuredFilter ? configuredFilter(module) : true) &&
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moduleSerializer.processModuleFilter(module)
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)
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},
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},
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}
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}
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module.exports = {
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createModuleSerializer,
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withXuqmModuleConfig,
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}
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