{{ message }}
Repository navigation
Expand file tree
/
Copy pathcheck-test-types.ts
More file actions
399 lines (367 loc) · 16 KB
/
Copy pathcheck-test-types.ts
File metadata and controls
399 lines (367 loc) · 16 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
#!/usr/bin/env bun
/**
* Ratchets type errors in apps/sim's unit tests down, per file and per error code.
*
* `apps/sim/tsconfig.json` excludes `*.test.ts(x)`, so `bun run type-check` never sees the ~3.4k
* test files, and they carry thousands of type errors nobody is asked to fix today. Without a
* gate, every new test can add more, and a test whose mocks no longer match the code they stand
* in for type-checks as fine as one that does. This check runs the native compiler (the root
* `tsc`, which `check:native-typecheck` pins to TypeScript 7) on `apps/sim/tsconfig.tests.json`,
* the app's config with the tests left in, counts errors per file and TS code, and compares the
* counts with `scripts/check-test-types.baseline.json` (`{ file: { "TS2322": n } }`).
*
* - A (file, code) count that rises fails, including a file's first error and a new code in a
* baselined file, so fixing one error cannot pay for a different kind of error in that file.
* - A count that drops fails until the baseline is rewritten, so the baseline only shrinks.
* - Output the parser cannot place (a config error with no file, a compiler crash) fails
* outright: it would otherwise read as fewer errors.
*
* The key stops at the code on purpose: line and column move with every edit above an error, and
* messages print types (`Type '{ id: string; … }'`) that change when an unrelated source type or
* the compiler's type printer does, so either would fail pull requests that added no error.
*
* It type-checks the whole app (about a minute on a 4 vCPU runner), so it is not one of the
* `check:audits`: CI runs it in its own `test-types` job (.github/workflows/checks.yml). Fixing a
* finding never needs a local run: the failing step prints each new error.
*
* Flags:
* - `--report <dir>` writes `diagnostics.txt` (the compiler's output), `status.json` (its exit
* code and how many errors it printed, written only once those agree), and `counts.json` (the
* counts, in the baseline's shape) to `<dir>`. CI uploads it as the `test-types` artifact when
* the job fails.
* - `--diagnostics <file>` reads such a `diagnostics.txt` instead of running the compiler, and
* requires the `status.json` beside it: an empty or truncated file must never read as fewer
* errors, so the parse has to match the recorded exit code and error count.
* - `--update` rewrites the baseline, refusing to raise any count. A missing baseline is restored
* from git, never regenerated.
*
* Shrink the baseline after a fix, from a failed CI run's artifact (no local compile):
* gh run download <run-id> -n test-types -D <dir>
* bun run scripts/check-test-types.ts --diagnostics <dir>/diagnostics.txt --update
*
* Run: `bun run check:test-types`
*/
import { existsSync, mkdirSync, readFileSync, writeFileSync } from 'node:fs'
import path from 'node:path'
import { fileURLToPath } from 'node:url'
import { isRecordLike, toRecord } from '@sim/utils/object'
import { compareStrings } from '@sim/utils/string'
import { localBin } from './local-bin'
const ROOT = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..')
const APP_DIR = path.join(ROOT, 'apps/sim')
const TSCONFIG = 'tsconfig.tests.json'
const BASELINE = path.join(ROOT, 'scripts/check-test-types.baseline.json')
/** Per regressed (file, code), so one file that stopped resolving an import cannot flood the log. */
const MAX_PRINTED = 25
/** Error count per TS code, per repo-relative file. */
type Counts = Record<string, Record<string, number>>
interface LocatedError {
code: string
/** The error's first line, rewritten with its repo-relative path. */
text: string
}
interface ParsedOutput {
/** Errors keyed by repo-relative file. */
errors: Map<string, LocatedError[]>
/** Top-level lines that are not a located error: a global diagnostic, a crash, a new format. */
unplaced: string[]
/** The compiler's own `Found N errors` total, when it printed one. */
reportedTotal: number | null
}
/** `file(line,col): error TS1234: message`; lazy so a route group's `(name)` stays in the path. */
const LOCATED_ERROR = /^(.+?)\((\d+),(\d+)\): error (TS\d+): (.*)$/
const SUMMARY = /^Found (\d+) errors?\b/
const CODE = /^TS\d+$/
/**
* Parses `tsc --pretty false` output. Paths are resolved against `cwd` (where the compiler ran)
* and made relative to `root`, so counts match however the compiler printed them. Continuation
* lines of a multi-line message are indented and belong to the error above them.
*/
export function parseCompilerOutput(output: string, cwd: string, root: string): ParsedOutput {
const errors = new Map<string, LocatedError[]>()
const unplaced: string[] = []
let reportedTotal: number | null = null
for (const line of output.split(/\r?\n/)) {
if (line.trim() === '' || /^\s/.test(line)) continue
const located = LOCATED_ERROR.exec(line)
if (located) {
const [, rawFile, row, column, code, message] = located
const file = path.relative(root, path.resolve(cwd, rawFile)).split(path.sep).join('/')
const list = errors.get(file) ?? []
list.push({ code, text: `${file}:${row}:${column} ${code} ${message}` })
errors.set(file, list)
continue
}
const summary = SUMMARY.exec(line)
if (summary) {
reportedTotal = Number(summary[1])
continue
}
unplaced.push(line)
}
return { errors, unplaced, reportedTotal }
}
function sortedKeys<T>(record: Record<string, T>): Record<string, T> {
return Object.fromEntries(
Object.keys(record)
.sort()
.map((key) => [key, record[key]])
)
}
function sortedCounts(counts: Counts): Counts {
return Object.fromEntries(
Object.entries(sortedKeys(counts)).map(([file, codes]) => [file, sortedKeys(codes)])
)
}
export function countErrors(errors: Map<string, LocatedError[]>): Counts {
const counts: Counts = {}
for (const [file, list] of errors) {
const codes: Record<string, number> = {}
for (const { code } of list) codes[code] = (codes[code] ?? 0) + 1
counts[file] = codes
}
return sortedCounts(counts)
}
function total(counts: Counts): number {
return Object.values(counts)
.flatMap((codes) => Object.values(codes))
.reduce((sum, count) => sum + count, 0)
}
/** Accepts only `{ file: { TSnnnn: positive integer } }` with no empty file entry. */
export function parseCounts(json: string, source: string): Counts {
const value: unknown = JSON.parse(json)
if (!isRecordLike(value)) {
throw new Error(`${source} is not a JSON object of per-file, per-code counts`)
}
const counts: Counts = {}
for (const [file, codes] of Object.entries(value)) {
if (!isRecordLike(codes) || Object.keys(codes).length === 0) {
throw new Error(`${source}: ${file} must map TS codes to counts`)
}
counts[file] = {}
for (const [code, count] of Object.entries(codes)) {
if (!CODE.test(code) || typeof count !== 'number' || !Number.isInteger(count) || count < 1) {
throw new Error(
`${source}: ${file} ${code} has count ${JSON.stringify(count)}; expected TSnnnn: integer ≥ 1`
)
}
counts[file][code] = count
}
}
return counts
}
interface CountChange {
file: string
code: string
count: number
baseline: number
}
interface Comparison {
/** (file, code) pairs above their baseline count, including pairs with no baseline entry. */
regressed: CountChange[]
/** Baselined (file, code) pairs below their count, including pairs with no errors left. */
shrunk: CountChange[]
}
function pairs(counts: Counts): Array<[string, string, number]> {
return Object.entries(counts).flatMap(([file, codes]) =>
Object.entries(codes).map(([code, count]): [string, string, number] => [file, code, count])
)
}
export function compareCounts(current: Counts, baseline: Counts): Comparison {
const regressed = pairs(current)
.filter(([file, code, count]) => count > (baseline[file]?.[code] ?? 0))
.map(([file, code, count]) => ({ file, code, count, baseline: baseline[file]?.[code] ?? 0 }))
const shrunk = pairs(baseline)
.filter(([file, code, count]) => (current[file]?.[code] ?? 0) < count)
.map(([file, code, count]) => ({
file,
code,
count: current[file]?.[code] ?? 0,
baseline: count,
}))
const order = (a: CountChange, b: CountChange) =>
compareStrings(a.file, b.file) || compareStrings(a.code, b.code)
return { regressed: regressed.sort(order), shrunk: shrunk.sort(order) }
}
/** Per-(file, code) counts clamped to the baseline, so an update can only lower them. */
export function shrinkBaseline(current: Counts, baseline: Counts): Counts {
const next: Counts = {}
for (const [file, code, count] of pairs(current)) {
const kept = Math.min(count, baseline[file]?.[code] ?? 0)
if (kept > 0) next[file] = { ...next[file], [code]: kept }
}
return sortedCounts(next)
}
function flagValue(flag: string): string | null {
const index = process.argv.indexOf(flag)
if (index === -1) return null
const value = process.argv[index + 1]
if (!value || value.startsWith('--')) {
console.error(`✗ ${flag} needs a path`)
process.exit(1)
}
return path.resolve(value)
}
function fail(lines: string[]): never {
for (const line of lines) console.error(line)
process.exit(1)
}
/** Fails on any parsed output that would undercount; otherwise returns its counts. */
function checkedCounts(parsed: ParsedOutput): Counts {
if (parsed.unplaced.length) {
fail([
`✗ ${parsed.unplaced.length} line(s) of tsc output are not a located error; fix them first:`,
...parsed.unplaced.slice(0, 40).map((line) => ` ${line}`),
])
}
const counts = countErrors(parsed.errors)
if (parsed.reportedTotal !== null && parsed.reportedTotal !== total(counts)) {
fail([`✗ tsc reported ${parsed.reportedTotal} errors but ${total(counts)} were parsed`])
}
return counts
}
/** What `--report` records about a compile, so a saved `diagnostics.txt` can be checked later. */
interface CompileStatus {
exitCode: number
errorCount: number
}
/** Exit 0 means no errors and 1 or 2 means some; any other pairing is a failed or partial run. */
function checkExitCode(exitCode: number, found: number): void {
if ((exitCode === 0) !== (found === 0)) {
fail([`✗ tsc exited with ${exitCode} but ${found} errors were parsed`])
}
}
/** Runs the compiler on the tests config and returns its parsed output. */
function compile(reportDir: string | null): { counts: Counts; errors: ParsedOutput['errors'] } {
const result = Bun.spawnSync([localBin('tsc'), '--noEmit', '--pretty', 'false', '-p', TSCONFIG], {
cwd: APP_DIR,
stdout: 'pipe',
stderr: 'pipe',
})
const stdout = result.stdout.toString()
const stderr = result.stderr.toString()
if (reportDir) writeFileSync(path.join(reportDir, 'diagnostics.txt'), `${stdout}${stderr}`)
// 0: no errors; 1 and 2: errors reported. Anything else, or a signal, is a crash.
if (result.signalCode || ![0, 1, 2].includes(result.exitCode)) {
fail([
`✗ tsc exited with ${result.signalCode ? `signal ${result.signalCode}` : result.exitCode}:`,
stderr.trim() || stdout.trim().split('\n').slice(-40).join('\n'),
])
}
const parsed = parseCompilerOutput(stdout, APP_DIR, ROOT)
const counts = checkedCounts(parsed)
checkExitCode(result.exitCode, total(counts))
if (reportDir) {
const status: CompileStatus = { exitCode: result.exitCode, errorCount: total(counts) }
writeFileSync(path.join(reportDir, 'status.json'), `${JSON.stringify(status, null, 2)}\n`)
}
return { counts, errors: parsed.errors }
}
function readStatus(file: string): CompileStatus {
if (!existsSync(file)) {
fail([
`✗ ${file} is missing, so the compile that wrote these diagnostics cannot be verified.`,
' Use the whole test-types artifact of a run whose compile finished.',
])
}
const value: unknown = JSON.parse(readFileSync(file, 'utf8'))
const { exitCode, errorCount } = toRecord(value)
if (
typeof exitCode !== 'number' ||
![0, 1, 2].includes(exitCode) ||
typeof errorCount !== 'number' ||
!Number.isInteger(errorCount) ||
errorCount < 0
) {
fail([`✗ ${file} is not { "exitCode": 0 | 1 | 2, "errorCount": integer ≥ 0 }`])
}
return { exitCode, errorCount }
}
/**
* Parses a saved compiler output (the CI artifact's `diagnostics.txt`) without compiling, held
* to the same checks as a live compile plus the error count recorded beside it.
*/
function readDiagnostics(file: string): { counts: Counts; errors: ParsedOutput['errors'] } {
const status = readStatus(path.join(path.dirname(file), 'status.json'))
const parsed = parseCompilerOutput(readFileSync(file, 'utf8'), APP_DIR, ROOT)
const counts = checkedCounts(parsed)
checkExitCode(status.exitCode, total(counts))
if (status.errorCount !== total(counts)) {
fail([
`✗ ${file} holds ${total(counts)} errors but its compile printed ${status.errorCount}; ` +
'it is truncated or from another run.',
])
}
return { counts, errors: parsed.errors }
}
function main(): void {
const reportDir = flagValue('--report')
const diagnosticsFile = flagValue('--diagnostics')
const update = process.argv.includes('--update')
if (reportDir) mkdirSync(reportDir, { recursive: true })
const { counts: current, errors } = diagnosticsFile
? readDiagnostics(diagnosticsFile)
: compile(reportDir)
if (reportDir) {
writeFileSync(path.join(reportDir, 'counts.json'), `${JSON.stringify(current, null, 2)}\n`)
}
const baselinePath = path.relative(ROOT, BASELINE)
if (!existsSync(BASELINE)) {
fail([`✗ ${baselinePath} is missing. Restore it from git.`])
}
const baseline = parseCounts(readFileSync(BASELINE, 'utf8'), baselinePath)
const { regressed, shrunk } = compareCounts(current, baseline)
if (update) {
if (regressed.length) {
fail([
`✗ refused to raise the baseline for ${regressed.length} (file, code) pair(s); fix them instead:`,
...regressed.map((c) => ` ${c.file} ${c.code}: ${c.count} (baseline ${c.baseline})`),
])
}
const next = shrinkBaseline(current, baseline)
writeFileSync(BASELINE, `${JSON.stringify(next, null, 2)}\n`)
console.log(`Wrote ${baselinePath}: ${total(next)} errors in ${Object.keys(next).length} files`)
return
}
if (regressed.length) {
console.error(`✗ ${regressed.length} (file, code) pair(s) gained type errors:`)
for (const change of regressed) {
console.error(
`\n ${change.file} ${change.code}: ${change.count} (baseline ${change.baseline})`
)
const lines = (errors.get(change.file) ?? []).filter((error) => error.code === change.code)
for (const { text } of lines.slice(0, MAX_PRINTED)) console.error(` ${text}`)
if (lines.length > MAX_PRINTED) console.error(` … ${lines.length - MAX_PRINTED} more`)
}
console.error(
'\n Fix the types: a typed factory from @sim/testing, vi.mocked(fn), or a mock whose shape ' +
'matches the real module. Never `as any` or a @ts-ignore/@ts-expect-error to quiet one, ' +
'and never raise the baseline.'
)
if (Object.keys(baseline).some((file) => !(file in current))) {
console.error(
` If a regressed file is a baselined file you only moved (git mv), move its entry to the ` +
`new path in ${baselinePath}; its counts may not grow.`
)
}
}
if (shrunk.length) {
console.error(`\n✗ ${shrunk.length} (file, code) pair(s) dropped below the baseline:`)
for (const change of shrunk) {
console.error(
` ${change.file} ${change.code}: ${change.count} (baseline ${change.baseline})`
)
}
console.error(
' Shrink the baseline so they cannot creep back: bun run scripts/check-test-types.ts ' +
'--update, or without a local compile, from the failed CI run:\n' +
' gh run download <run-id> -n test-types -D <dir> && ' +
'bun run scripts/check-test-types.ts --diagnostics <dir>/diagnostics.txt --update'
)
}
if (regressed.length || shrunk.length) process.exit(1)
console.log(
`✓ test type errors: ${total(current)} baselined in ${Object.keys(current).length} files`
)
}
if (import.meta.main) main()
You can’t perform that action at this time.