/**
* Path validation utilities for import resolution
*/
import { resolve, normalize } from 'path'
export function isValidPath(path: string): boolean {
try {
return path.length > 0 && !path.includes('\0') && !path.includes('..')
}
catch {
return false
}
}
export function isExternalModule(importPath: string): boolean {
return !importPath.startsWith('./')
&& !importPath.startsWith('../')
&& !importPath.startsWith('/')
&& !importPath.startsWith('@/')
&& !importPath.startsWith('~/')
}
export function normalizePath(path: string): string {
try {
return normalize(path).replace(/\\/g, '/')
}
catch {
return path
}
}
export function validateImportPath(importPath: string, currentFile: string): {
isValid: boolean
reason?: string
} {
if (!importPath) {
return { isValid: false, reason: 'Empty import path' }
}
if (importPath.includes('\0')) {
return { isValid: false, reason: 'Contains null character' }
}
if (importPath.length > 260) {
return { isValid: false, reason: 'Path too long' }
}
if (importPath === currentFile) {
return { isValid: false, reason: 'Circular import detected' }
}
return { isValid: true }
}
export function resolveAndValidate(importPath: string, basePath: string): string | null {
try {
if (!isValidPath(importPath)) return null
const resolved = resolve(basePath, importPath)
const normalized = normalizePath(resolved)
if (!normalized.startsWith(normalizePath(basePath))) {
return null
}
return normalized
}
catch {
return null
}
}
export function getImportType(importPath: string): 'relative' | 'absolute' | 'alias' | 'external' {
if (importPath.startsWith('./') || importPath.startsWith('../')) {
return 'relative'
}
if (importPath.startsWith('/')) {
return 'absolute'
}
if (importPath.startsWith('@/') || importPath.startsWith('~/')) {
return 'alias'
}
return 'external'
}
