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kestrelos/test/unit/server-imports.spec.js
Madison Grubb c8d37c98f4
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more functional design principles
2026-02-17 11:17:52 -05:00

83 lines
2.6 KiB
JavaScript

import { readFileSync, readdirSync } from 'node:fs'
import { resolve, dirname, relative } from 'node:path'
import { fileURLToPath } from 'node:url'
import { describe, it, expect } from 'vitest'
const __dirname = dirname(fileURLToPath(import.meta.url))
const projectRoot = resolve(__dirname, '../..')
const serverDir = resolve(projectRoot, 'server')
/** Collects all .js file paths under dir (recursive). */
function listJsFiles(dir, base = dir) {
const entries = readdirSync(dir, { withFileTypes: true })
const files = []
for (const e of entries) {
const full = resolve(dir, e.name)
if (e.isDirectory()) {
files.push(...listJsFiles(full, base))
}
else if (e.isFile() && e.name.endsWith('.js')) {
files.push(relative(base, full))
}
}
return files
}
/** Extracts relative import/require paths from file content (no node_modules). */
function getRelativeImports(content) {
const paths = []
const fromRegex = /from\s+['"]([^'"]+)['"]/g
const requireRegex = /require\s*\(\s*['"]([^'"]+)['"]\s*\)/g
const extractMatches = (regex, text) => {
const matches = []
const execRegex = (r) => {
const match = r.exec(text)
if (match) {
matches.push(match[1])
return execRegex(r)
}
return matches
}
return execRegex(regex)
}
for (const re of [fromRegex, requireRegex]) {
const matches = extractMatches(re, content)
matches.forEach((p) => {
if (p.startsWith('.')) paths.push(p)
})
}
return paths
}
describe('server imports', () => {
it('only import from within server/ (no shared/ or other outside paths)', () => {
const violations = []
const files = listJsFiles(serverDir).map(f => resolve(serverDir, f))
for (const filePath of files) {
const content = readFileSync(filePath, 'utf-8')
const fileDir = dirname(filePath)
for (const importPath of getRelativeImports(content)) {
const resolved = resolve(fileDir, importPath)
const relToServer = relative(serverDir, resolved)
if (relToServer.startsWith('..') || relToServer.startsWith('/')) {
violations.push({
file: relative(projectRoot, filePath),
import: importPath,
resolved: relative(projectRoot, resolved),
})
}
}
}
expect(
violations,
violations.length
? `Server files must not import from outside server/. Violations:\n${violations
.map(v => ` ${v.file}${v.import} (resolves to ${v.resolved})`)
.join('\n')}`
: undefined,
).toHaveLength(0)
})
})