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104 lines
4.0 KiB
JavaScript
104 lines
4.0 KiB
JavaScript
/**
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* 通用导出冲突扫描器
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* 扫描目录下 .ts/.js 文件的 export，检测同名冲突，返回冲突映射。
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*/
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const fs = require('fs')
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const path = require('path')
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const DEFAULT_EXTENSIONS = ['.ts', '.js', '.tsx', '.jsx']
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/** 从源码中提取所有命名导出名称 */
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function scanExports(src) {
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const names = []
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// export const|let|var|function|class|type|interface|enum NAME
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const declRe = /export\s+(?:const|let|var|function|class|type|interface|enum)\s+(\w+)/g
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for (const m of src.matchAll(declRe)) names.push(m[1])
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// export { a, b, c as d }
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const braceRe = /export\s*(?:type\s*)?\{([^}]+)\}/g
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for (const m of src.matchAll(braceRe)) {
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for (const item of m[1].split(',').map(s => s.trim()).filter(Boolean)) {
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const parts = item.split(/\s+(?:as|:)\s+/)
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names.push(parts.length > 1 ? parts[parts.length - 1].trim() : parts[0].trim())
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}
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}
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return [...new Set(names)]
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}
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/** 扫描目录，返回文件列表 */
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function scanDirExports(dir, opts = {}) {
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const exclude = new Set(opts.exclude || [])
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const exts = new Set(opts.extensions || DEFAULT_EXTENSIONS)
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if (!fs.existsSync(dir)) return []
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const out = []
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for (const f of fs.readdirSync(dir)) {
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const full = path.join(dir, f)
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if (!fs.statSync(full).isFile()) continue
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if (![...exts].some(e => f.endsWith(e))) continue
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if (exclude.has(f) || exclude.has(full)) continue
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out.push({ moduleKey: f.replace(/\.[^.]+$/, ''), path: full })
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}
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return out
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}
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/** 递归扫描目录 */
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function scanRecursive(dir, opts = {}) {
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const exclude = new Set(opts.exclude || [])
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const exts = new Set(opts.extensions || DEFAULT_EXTENSIONS)
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const out = []
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if (!fs.existsSync(dir)) return out
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function walk(base, rel) {
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for (const name of fs.readdirSync(base)) {
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const relPath = rel ? `${rel}/${name}` : name
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if (exclude.has(relPath) || exclude.has(name)) continue
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const full = path.join(base, name)
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const stat = fs.statSync(full)
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if (stat.isDirectory()) walk(full, relPath)
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else if (stat.isFile() && [...exts].some(e => name.endsWith(e)))
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out.push({ moduleKey: relPath.replace(/\.[^.]+$/, '').replace(/[\\/]/g, '_'), path: full })
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}
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}
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walk(dir, '')
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return out
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}
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/**
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* 检测并解决导出冲突。按 moduleKey 字母序处理，
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* 先导出的保留原名，后出现的加 moduleKey 前缀。
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*/
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function resolveConflicts(files, opts = {}) {
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const sorted = [...files].sort((a, b) => a.moduleKey.localeCompare(b.moduleKey))
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const exportedNames = new Set()
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const conflicts = {}
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const resolved = []
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for (const file of sorted) {
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const src = fs.readFileSync(file.path, 'utf-8')
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const names = scanExports(src)
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const normal = []; const renamed = []
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for (const name of names) {
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if (!exportedNames.has(name)) { exportedNames.add(name); normal.push(name) }
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else {
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const newName = opts.prefixer ? opts.prefixer(file, name) : file.moduleKey + '_' + name
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exportedNames.add(newName); renamed.push(name)
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conflicts[file.moduleKey + ':' + name] = newName
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}
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}
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resolved.push({ module: file.moduleKey, normal, renamed, src: file.path })
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}
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return { resolved, conflicts }
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}
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/** 生成 re-export 语句 */
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function buildReExportStatements(resolved, modulePathPrefix) {
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const lines = []
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for (const r of resolved) {
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if (r.normal.length) lines.push(`export { ${r.normal.join(', ')} } from '${modulePathPrefix}/${r.module}'`)
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if (r.renamed.length) {
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const renamedStr = r.renamed.map(n => `${n} as ${r.module}_${n}`).join(', ')
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lines.push(`export { ${renamedStr} } from '${modulePathPrefix}/${r.module}'`)
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}
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}
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return lines
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}
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module.exports = { scanExports, scanDirExports, scanRecursive, resolveConflicts, buildReExportStatements }
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