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check.js
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check.js
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import { dirname, basename, join, relative } from 'path'
import { promises as fs } from 'fs'
import { createRequire } from 'module'
import { fileURLToPath } from 'url'
import { createSpinner } from 'nanospinner'
import { location } from 'vfile-location'
import { Worker } from 'worker_threads'
import pico from 'picocolors'
import glob from 'fast-glob'
import { getCompilerOptions } from './get-compiler-options.js'
let require = createRequire(import.meta.url)
let r = pico.red
let b = pico.bold
let g = pico.green
const ROOT = dirname(fileURLToPath(import.meta.url))
const TS_DIR = dirname(require.resolve('typescript'))
const WORKER = join(ROOT, 'worker.js')
const PREFIX = '// THROWS '
function checkFiles(files, compilerOptions) {
return new Promise((resolve, reject) => {
let worker = new Worker(WORKER, {
workerData: { files, compilerOptions }
})
worker.on('message', resolve)
worker.on('error', reject)
})
}
function getText(error) {
if (typeof error.messageText === 'object') {
return error.messageText.messageText
} else {
return error.messageText
}
}
function formatName(cwd, file, color) {
return pico.gray(relative(cwd, file).replace(basename(file), i => color(i)))
}
async function parseTest(files) {
let expects = []
await Promise.all(
files.map(async fileName => {
let source = (await fs.readFile(fileName)).toString()
let prev, pos
let lines = location(source)
while (true) {
pos = source.indexOf(PREFIX, prev + 1)
if (pos === -1) break
let newline = source.slice(pos).search(/\r?\n/)
if (newline !== -1) newline += pos
let pattern = source.slice(pos + PREFIX.length, newline)
let { line, column } = lines.toPoint(pos)
expects.push({ fileName, line: line + 1, column, pattern })
prev = pos
}
})
)
return expects
}
export async function check(
stderr,
cwd,
print,
globs = ['**/*.{js,ts,jsx,tsx}']
) {
let spinner = createSpinner('Check types', { stream: stderr })
spinner.start()
let compilerOptions = getCompilerOptions(cwd)
let all = await glob(globs, { cwd, ignore: ['node_modules'], absolute: true })
if (!all.some(i => /\.tsx?$/.test(i))) {
let err = new Error(
'TypeScript files were not found. ' +
'Create .d.ts files and test/types.ts and test/errors.ts.'
)
err.own = true
throw err
}
let typeTests = all.filter(i => /\.?(errors|types)\.tsx?/.test(i))
let failTests = all.filter(i => /\.?errors\.tsx?$/.test(i))
all.push(join(TS_DIR, 'lib.dom.d.ts'))
all.push(join(TS_DIR, 'lib.es2018.d.ts'))
let expects = await parseTest(failTests)
let errors = await checkFiles(all, compilerOptions)
let bad = {}
function push(file, message) {
if (!bad[file]) bad[file] = []
bad[file].push(message)
}
for (let error of errors) {
if (error.messageText.code === 6504 || error.messageText.code === 6054) {
// Unsupported files
continue
}
let { line, column } = location(error.file.text).toPoint(error.start)
let expect = expects.find(j => {
return error.file.fileName === j.fileName && line === j.line && !j.used
})
let prefix = r(
`✖ ${formatName(cwd, error.file.fileName, r)}:${line}:${column}:`
)
let text = getText(error)
if (!failTests.includes(error.file.fileName)) {
push(
error.fileName,
prefix +
b(' Type error ' + pico.gray(`TS${error.code}`) + '\n') +
' ' +
r(text)
)
} else if (!expect) {
push(error.fileName, prefix + b(' Unexpected error\n') + ' ' + r(text))
} else {
expect.used = true
if (!text.includes(expect.pattern)) {
push(
error.fileName,
prefix +
b(' Wrong error\n') +
' Expected: ' +
g(expect.pattern) +
'\n' +
' Got: ' +
r(text)
)
}
}
}
let unused = expects.filter(i => !i.used)
for (let i of unused) {
push(
i.fileName,
r(`✖ ${formatName(cwd, i.fileName, r)}:${i.line}:${i.column}:`) +
b(' Error was not found\n') +
' ' +
r(i.pattern)
)
}
let failed = Object.keys(bad).length > 0
if (failed) {
spinner.error()
print('')
for (let file in bad) {
let messages = (bad[file] || []).sort((msg1, msg2) => {
let line1 = parseInt(msg1.match(/(\d+):/)[1])
let line2 = parseInt(msg2.match(/(\d+):/)[1])
return line1 - line2
})
for (let i of messages) {
print(i + '\n')
}
}
return false
} else {
spinner.success()
for (let i of typeTests) {
print(g('✔ ') + formatName(cwd, i, pico.white))
}
return true
}
}