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import { describe, expect, it } from 'vitest'
import {
type Baseline,
type CurrentCounts,
compareToBaseline,
findViolations,
nextBaseline,
type Rule,
} from './check-source-conventions'
function hits(file: string, source: string, rule: Rule) {
return findViolations(file, source)
.filter((violation) => violation.rule === rule)
.map(({ detail }) => detail)
}
function lines(file: string, source: string, rule: Rule) {
return findViolations(file, source)
.filter((violation) => violation.rule === rule)
.map(({ line }) => line)
}
describe('relative-import', () => {
const MODULE = 'apps/sim/lib/feature/service.ts'
const BARREL = 'apps/sim/lib/feature/index.ts'
it('flags every import form that names a relative path', () => {
const source = [
"import { a } from './a'",
"import type { B } from '../b'",
"import './side-effect'",
"export { c } from './c'",
"export * from '../d'",
"const e = await import('./e')",
"const f = require('../f')",
"import g = require('./g')",
"const h = await import(/* webpackChunkName: 'h' */ './h')",
"type I = import('./i').I",
].join('\n')
expect(hits(MODULE, source, 'relative-import')).toEqual([
'./a',
'../b',
'./side-effect',
'./c',
'../d',
'./e',
'../f',
'./g',
'./h',
'./i',
])
})
it('lets a barrel pass its own folder through, by either spelling', () => {
const source = [
"export { a } from './a'",
"export * from './nested/b'",
"import { c } from './c'",
"import d from './d'",
"import { e } from './e'",
'export { c, d as default }',
'export const renamedE = e',
].join('\n')
expect(hits(BARREL, source, 'relative-import')).toEqual([])
})
it('flags a barrel line that leaves the folder or is not a pass-through', () => {
const source = [
"export { a } from '../a'",
"export { b } from './../b'",
"import './side-effect'",
"import { kept } from './kept'",
"import { half, other } from './half'",
'export const registry = { kept }',
'export { half }',
"const lazy = await import('./lazy')",
].join('\n')
expect(hits(BARREL, source, 'relative-import')).toEqual([
'../a',
'./../b',
'./side-effect',
'./kept',
'./half',
'./lazy',
])
})
it('finds a dynamic import whose only relative path follows a comment', () => {
const source = "export const load = () => import(/* webpackChunkName: 'h' */ './h')"
expect(hits(MODULE, source, 'relative-import')).toEqual(['./h'])
})
it('ignores a relative path that is only text', () => {
const source = "const snippet = \"import { a } from './a'\"\nconst code = `from '../b'`"
expect(hits(MODULE, source, 'relative-import')).toEqual([])
})
it('applies to tests too, and nowhere outside apps/sim', () => {
expect(
hits('apps/sim/lib/feature/service.test.ts', "import { a } from './a'", 'relative-import')
).toHaveLength(1)
expect(
hits('packages/utils/src/object.ts', "import { a } from './a'", 'relative-import')
).toEqual([])
})
it('exempts a Mothership contract copy only where contracts:sync writes it', () => {
const copy = [
'// GENERATED — do not edit. Source of truth: mothership worker packages/contracts/src/sim-transport.ts',
"import { MemoryNotesAccessInput } from './memory-notes-access'",
].join('\n')
expect(
hits('apps/sim/lib/mothership/generated/sim-transport.ts', copy, 'relative-import')
).toEqual([])
expect(hits('apps/sim/lib/feature/service.ts', copy, 'relative-import')).toEqual([
'./memory-notes-access',
])
expect(
hits(
'apps/sim/lib/mothership/generated/handwritten.ts',
"import { a } from './a'",
'relative-import'
)
).toEqual(['./a'])
})
})
describe('text-size-literal', () => {
const FILE = 'apps/sim/app/workspace/page.tsx'
it('flags a size the text scale names, alone or behind variants and important', () => {
const source = [
"const a = <p className='text-[13px] text-[var(--text-muted)]' />",
"const b = <p className='md:text-[14px] !text-[10px]' />",
"const c = cn('font-medium', 'text-[12px]')",
"const d = cn('text-[13.0px]')",
].join('\n')
expect(hits(FILE, source, 'text-size-literal')).toEqual([
'text-[13px] → text-small',
'text-[14px] → text-sm',
'text-[10px] → text-micro',
'text-[12px] → text-caption',
'text-[13.0px] → text-small',
])
})
it('reports the line inside a multi-line template literal', () => {
const source = ['const classes = `', ' flex', ' text-[16px]', '`'].join('\n')
expect(lines(FILE, source, 'text-size-literal')).toEqual([3])
})
it('skips sizes the scale has no token for, colors, variables and comments', () => {
const source = [
"const a = <h1 className='text-[32px] text-[13.5px] text-[#fff] text-[var(--x)] max-text-[13px]' />",
'// Replace text-[13px] with text-small',
'/* text-[14px] */',
].join('\n')
expect(hits(FILE, source, 'text-size-literal')).toEqual([])
})
})
describe('static-inline-style', () => {
const FILE = 'apps/sim/app/workspace/page.tsx'
const jsx = (...elements: string[]) => `const view = (\n<>\n${elements.join('\n')}\n</>\n)`
it('flags a style object whose every value is a static literal, however it is spaced or cast', () => {
const source = jsx(
"<div style={{ display: 'none' }} />",
'<col style={{ width: 140, marginTop: -1 }} />',
'<div style={{ position: `absolute` }} />',
"<div style={ { display: 'none' } } />",
"<div style = {{ display: 'none' } as CSSProperties} />",
"<div style={{ display: 'none' as const, opacity: 0 satisfies number }} />"
)
expect(hits(FILE, source, 'static-inline-style')).toHaveLength(6)
})
it('finds a static style whose braces are spaced apart', () => {
expect(
hits(FILE, jsx("<div style={ { display: 'none' } } />"), 'static-inline-style')
).toHaveLength(1)
})
it('allows dynamic values, CSS variables, custom properties, spreads and computed keys', () => {
const source = jsx(
'<div style={{ width }} />',
'<div style={{ width: size, display: "flex" }} />',
"<div style={{ width: 'var(--sidebar-width)' }} />",
"<div style={{ '--cta-size': '12px' }} />",
'<div style={{ ...base }} />',
"<div style={{ [key]: 'red' }} />",
`<div style={{ left: \`\${x}px\` }} />`,
'<div style={STYLE} />'
)
expect(hits(FILE, source, 'static-inline-style')).toEqual([])
})
it('does not exempt a file that only mentions a renderer in a comment', () => {
const source =
"// rendered like `from 'next/og'`\nconst a = <div style={{ display: 'none' }} />"
expect(hits(FILE, source, 'static-inline-style')).toHaveLength(1)
})
it('skips files rendered without the Tailwind stylesheet', () => {
const email =
"import { Text } from '@react-email/components'\nconst a = <Text style={{ margin: 0 }} />"
const og =
"import { ImageResponse } from 'next/og'\nconst a = <div style={{ display: 'flex' }} />"
expect(hits('apps/sim/components/emails/a.tsx', email, 'static-inline-style')).toEqual([])
expect(hits('apps/sim/app/opengraph-image.tsx', og, 'static-inline-style')).toEqual([])
})
})
describe('api-db-import', () => {
const ROUTE = 'apps/sim/app/api/things/route.ts'
it('flags value imports, re-exports and dynamic imports of @sim/db and its subpaths', () => {
const source = [
"import { db } from '@sim/db'",
"import { thing, type Thing } from '@sim/db/schema'",
"export { db } from '@sim/db'",
"const mod = await import('@sim/db/schema')",
].join('\n')
expect(hits(ROUTE, source, 'api-db-import')).toEqual([
'@sim/db',
'@sim/db/schema',
'@sim/db',
'@sim/db/schema',
])
})
it('allows type-only imports', () => {
const source = [
"import type { Thing } from '@sim/db/schema'",
"import { type Other } from '@sim/db/schema'",
"export type { Thing } from '@sim/db/schema'",
"export { type Other } from '@sim/db/schema'",
].join('\n')
expect(hits(ROUTE, source, 'api-db-import')).toEqual([])
})
it('covers helpers beside a route, but not tests or code outside app/api', () => {
const source = "import { db } from '@sim/db'"
expect(hits('apps/sim/app/api/things/utils.ts', source, 'api-db-import')).toHaveLength(1)
expect(hits('apps/sim/app/api/things/route.test.ts', source, 'api-db-import')).toEqual([])
expect(hits('apps/sim/app/api/things/route.integration.ts', source, 'api-db-import')).toEqual(
[]
)
expect(hits('apps/sim/lib/things/service.ts', source, 'api-db-import')).toEqual([])
})
})
describe('bare-route-handler', () => {
const ROUTE = 'apps/sim/app/api/things/route.ts'
it('flags a verb exported as a handler body written in the route', () => {
const source = [
'export async function GET() { return new Response() }',
'export function HEAD() { return new Response() }',
'export const POST = async (request) => handle(request)',
'export const PUT = (request) => { return handle(request) }',
'export const PATCH = function (request) { return handle(request) }',
'export const DELETE = () => new Response()',
'export const OPTIONS = (request) => respond(request)',
].join('\n')
expect(hits(ROUTE, source, 'bare-route-handler')).toEqual([
'GET',
'HEAD',
'POST',
'PUT',
'PATCH',
'DELETE',
'OPTIONS',
])
})
it('follows local aliases and renamed exports to the function behind them', () => {
const source = [
'async function handler() { return new Response() }',
'const alias = handler',
'const loop = () => other()',
'const other = () => loop()',
'const wrapped = withRouteHandler(handler)',
'const routes = { PATCH: async () => new Response(), HEAD() { return new Response() } }',
'export const GET = alias',
'export const PUT = loop',
'export const PATCH = routes.PATCH',
'export const HEAD = routes.HEAD',
'export { handler as POST, wrapped as DELETE }',
].join('\n')
expect(hits(ROUTE, source, 'bare-route-handler')).toEqual([
'GET',
'PUT',
'PATCH',
'HEAD',
'POST',
])
})
it('reads a local object member as the entry that wins at runtime', () => {
const source = [
'const handler = defineInternalJsonRoute({ useCase })',
'const spread = { GET: handler, ...overrides }',
'const computed = { POST: handler, [verb]: async () => new Response() }',
'const repeated = { PUT: handler, PUT: async () => new Response() }',
'const restored = { ...overrides, DELETE: handler }',
'export const GET = spread.GET',
'export const POST = computed.POST',
'export const PUT = repeated.PUT',
'export const DELETE = restored.DELETE',
].join('\n')
expect(hits(ROUTE, source, 'bare-route-handler')).toEqual(['GET', 'POST', 'PUT'])
})
it('allows wrapped results, their aliases and members, imports, and delegates to them', () => {
const source = [
"import { sharedHandler } from '@/lib/things/route'",
'const handler = defineInternalJsonRoute({ useCase })',
'const handlers = createMcpHandlers()',
'export const GET = withRouteHandler(async () => new Response())',
'export const POST = handler',
'export const PUT = handlers.PUT',
'export const PATCH = sharedHandler',
'export const DELETE = (request, context) => withSpan(request, () => handler(request, context))',
'export const HEAD = (request) => (offHost(request) ? notFound() : handler(request))',
'export const OPTIONS = flag ? handler : handlers.OPTIONS',
'export const dynamic = "force-dynamic"',
].join('\n')
const objectMembers = [
'const handler = defineInternalJsonRoute({ useCase })',
'const routes = { GET: withRouteHandler(async () => new Response()), PUT: handler }',
'export const GET = routes.GET',
'export const PUT = routes.PUT',
].join('\n')
expect(hits(ROUTE, source, 'bare-route-handler')).toEqual([])
expect(hits(ROUTE, objectMembers, 'bare-route-handler')).toEqual([])
})
it('only checks route files', () => {
expect(
hits(
'apps/sim/app/api/things/utils.ts',
'export async function GET() {}',
'bare-route-handler'
)
).toEqual([])
})
})
describe('baseline ratchet', () => {
const EMPTY: CurrentCounts = {
'relative-import': {},
'text-size-literal': {},
'static-inline-style': {},
'api-db-import': {},
'bare-route-handler': {},
}
const counts = (partial: Partial<CurrentCounts>): CurrentCounts => ({ ...EMPTY, ...partial })
const BASELINE: Baseline = { ...EMPTY, 'relative-import': { 'a.ts': 2, 'b.ts': 1 } }
it('fails a file whose count rises, or that gains its first hit', () => {
const current = counts({ 'relative-import': { 'a.ts': 3, 'b.ts': 1, 'c.ts': 1 } })
expect(compareToBaseline(BASELINE, current).raised).toEqual([
{ rule: 'relative-import', file: 'a.ts', count: 3, allowed: 2 },
{ rule: 'relative-import', file: 'c.ts', count: 1, allowed: 0 },
])
})
it('fails a count that dropped, so the fix is locked in', () => {
const current = counts({ 'relative-import': { 'a.ts': 1 } })
expect(compareToBaseline(BASELINE, current)).toEqual({
raised: [],
dropped: [
{ rule: 'relative-import', file: 'a.ts', count: 1, allowed: 2 },
{ rule: 'relative-import', file: 'b.ts', count: 0, allowed: 1 },
],
})
})
it('passes when counts match the baseline exactly', () => {
const current = counts({ 'relative-import': { 'a.ts': 2, 'b.ts': 1 } })
expect(compareToBaseline(BASELINE, current)).toEqual({ raised: [], dropped: [] })
})
it('shrinks on update, dropping fixed files', () => {
const result = nextBaseline(BASELINE, counts({ 'relative-import': { 'a.ts': 1 } }))
expect(result).toEqual({ baseline: { ...EMPTY, 'relative-import': { 'a.ts': 1 } } })
})
it('refuses to raise a count on update, even while another file shrinks', () => {
const result = nextBaseline(BASELINE, counts({ 'relative-import': { 'a.ts': 1, 'b.ts': 2 } }))
expect(result).toEqual({
errors: ['refused to raise relative-import b.ts: 2 (baseline 1); fix it instead'],
})
})
it('admits an untracked rule once with --init-rule, and only that rule', () => {
const { 'bare-route-handler': _untracked, ...untracked } = BASELINE
const current = counts({
'relative-import': { 'a.ts': 3 },
'bare-route-handler': { 'route.ts': 2 },
})
expect(nextBaseline(untracked, current, 'bare-route-handler')).toEqual({
errors: ['refused to raise relative-import a.ts: 3 (baseline 2); fix it instead'],
})
const clean = counts({
'relative-import': BASELINE['relative-import'],
'bare-route-handler': { 'route.ts': 2 },
})
expect(nextBaseline(untracked, clean, 'bare-route-handler')).toEqual({
baseline: { ...BASELINE, 'bare-route-handler': { 'route.ts': 2 } },
})
})
it('refuses --init-rule for a rule the baseline already tracks, even when its debt is zero', () => {
const current = counts({ 'bare-route-handler': { 'route.ts': 1 } })
expect(nextBaseline(BASELINE, current, 'bare-route-handler')).toEqual({
errors: [
'--init-rule bare-route-handler: the baseline already tracks this rule, so its debt can only shrink. Fix the new hits instead.',
],
})
})
it('refuses an untracked rule with hits unless --init-rule names it', () => {
const { 'static-inline-style': _untracked, ...untracked } = BASELINE
const current = counts({
'relative-import': BASELINE['relative-import'],
'static-inline-style': { 'a.tsx': 1 },
})
expect(nextBaseline(untracked, current)).toEqual({
errors: [
'static-inline-style is not in the baseline. Admit its existing hits once with --update --init-rule static-inline-style.',
],
})
})
it('rejects an --init-rule that names no rule', () => {
expect(nextBaseline(BASELINE, EMPTY, 'no-such-rule')).toEqual({
errors: [
'--init-rule no-such-rule: not a rule in this script (relative-import, text-size-literal, static-inline-style, api-db-import, bare-route-handler)',
],
})
})
})
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