<!DOCTYPE html>
<script>
function setupForProblemCSS(prefix) {
const original = `
/* Variant 1 */
.${prefix}-v1 { --a: ; --b: ; max-width: var(--a) var(--b); }
.${prefix}-a { --a: 1px; }
.${prefix}-b { --b: 2px; }
/* Variant 2 */
.${prefix}-v2 { max-width: var(--a, ) var(--b, ); }
.${prefix}-a { --a: 1px; }
.${prefix}-b { --b: 2px; }
`
const style = document.createElement('style')
const test1a = document.createElement('div')
const test1b = document.createElement('div')
const test2a = document.createElement('div')
const test2b = document.createElement('div')
document.head.appendChild(style)
document.body.appendChild(test1a)
document.body.appendChild(test1b)
document.body.appendChild(test2a)
document.body.appendChild(test2b)
test1a.className = `${prefix}-v1 ${prefix}-a`
test1b.className = `${prefix}-v1 ${prefix}-b`
test2a.className = `${prefix}-v2 ${prefix}-a`
test2b.className = `${prefix}-v2 ${prefix}-b`
return [original, css => {
style.textContent = css
assertStrictEqual(getComputedStyle(test1a).maxWidth, `1px`)
assertStrictEqual(getComputedStyle(test1b).maxWidth, `2px`)
assertStrictEqual(getComputedStyle(test2a).maxWidth, `1px`)
assertStrictEqual(getComputedStyle(test2b).maxWidth, `2px`)
}]
}
async function expectThrownError(fn, err) {
try {
await fn()
throw new Error('Expected an error to be thrown')
} catch (e) {
assertStrictEqual(e.message, err)
}
}
function assertStrictEqual(a, b) {
if (a !== b) {
throw new Error(`Assertion failed:
Observed: ${JSON.stringify(a)}
Expected: ${JSON.stringify(b)}`);
}
}
async function runAllTests({ esbuild }) {
const tests = {
async defaultExport() {
assertStrictEqual(typeof esbuild.version, 'string')
assertStrictEqual(esbuild.version, esbuild.default.version)
assertStrictEqual(esbuild.version, esbuild.default.default.version)
assertStrictEqual(esbuild.version, esbuild.default.default.default.version)
},
async transformJS() {
const { code } = await esbuild.transform('1+2')
assertStrictEqual(code, '1 + 2;\n')
},
async transformTS() {
const { code } = await esbuild.transform('1 as any + <any>2', { loader: 'ts' })
assertStrictEqual(code, '1 + 2;\n')
},
async transformCSS() {
const { code } = await esbuild.transform('div { color: red }', { loader: 'css' })
assertStrictEqual(code, 'div {\n color: red;\n}\n')
},
async problemCSSOriginal() {
const [original, runAsserts] = setupForProblemCSS('original')
runAsserts(original)
},
async problemCSSPrettyPrinted() {
const [original, runAsserts] = setupForProblemCSS('pretty-print')
const { code: prettyPrinted } = await esbuild.transform(original, { loader: 'css' })
runAsserts(prettyPrinted)
},
async problemCSSMinified() {
const [original, runAsserts] = setupForProblemCSS('pretty-print')
const { code: minified } = await esbuild.transform(original, { loader: 'css', minify: true })
runAsserts(minified)
},
async buildFib() {
const fibonacciPlugin = {
name: 'fib',
setup(build) {
build.onResolve({ filter: /^fib\((\d+)\)/ }, args => {
return { path: args.path, namespace: 'fib' }
})
build.onLoad({ filter: /^fib\((\d+)\)/, namespace: 'fib' }, args => {
let match = /^fib\((\d+)\)/.exec(args.path), n = +match[1]
let contents = n < 2 ? `export default ${n}` : `
import n1 from 'fib(${n - 1}) ${args.path}'
import n2 from 'fib(${n - 2}) ${args.path}'
export default n1 + n2`
return { contents }
})
},
}
const result = await esbuild.build({
stdin: {
contents: `
import x from 'fib(10)'
module.exports = x
`,
},
format: 'cjs',
bundle: true,
plugins: [fibonacciPlugin],
})
assertStrictEqual(result.outputFiles.length, 1)
assertStrictEqual(result.outputFiles[0].path, '<stdout>')
const code = result.outputFiles[0].text
const answer = {}
new Function('module', code)(answer)
assertStrictEqual(answer.exports, 55)
},
async buildRelativeIssue693() {
const result = await esbuild.build({
stdin: {
contents: `const x=1`,
},
write: false,
outfile: 'esbuild.js',
});
assertStrictEqual(result.outputFiles.length, 1)
assertStrictEqual(result.outputFiles[0].path, '/esbuild.js')
assertStrictEqual(result.outputFiles[0].text, 'const x = 1;\n')
},
async watch() {
const context = await esbuild.context({})
try {
await expectThrownError(context.watch, 'Cannot use the "watch" API in this environment')
} finally {
context.dispose()
}
},
async serve() {
const context = await esbuild.context({})
try {
await expectThrownError(context.serve, 'Cannot use the "serve" API in this environment')
} finally {
context.dispose()
}
},
async esbuildBuildSync() {
await expectThrownError(esbuild.buildSync, 'The "buildSync" API only works in node')
},
async esbuildTransformSync() {
await expectThrownError(esbuild.transformSync, 'The "transformSync" API only works in node')
},
}
async function runTest(test) {
try {
await tests[test]()
} catch (e) {
e.test = test
throw e
}
}
const promises = []
for (const test in tests) {
promises.push(runTest(test))
}
await Promise.all(promises)
}
async function loadScript(url) {
const tag = document.createElement('script')
document.head.appendChild(tag)
await new Promise((resolve, reject) => {
tag.onload = resolve
tag.onerror = () => reject(new Error('Failed to load script: ' + url))
tag.src = url
})
const esbuild = window.esbuild
delete window.esbuild
return esbuild
}
async function testStart() {
if (!window.testBegin) window.testBegin = args => {
const { esm, min, worker, mime, approach } = JSON.parse(args)
console.log(`💬 config: esm=${esm}, min=${min}, worker=${worker}, mime=${mime}, approach=${approach}`)
}
if (!window.testEnd) window.testEnd = args => {
if (args === null) console.log(`👍 success`)
else {
const { test, stack, error } = JSON.parse(args)
console.log(`❌ error${test ? ` [${test}]` : ``}: ${error}`)
}
}
if (!window.testDone) window.testDone = error => {
console.log(`✅ done`)
}
for (const esm of [false, true]) {
for (const min of [false, true]) {
for (const worker of [false, true]) {
for (const mime of ['correct', 'incorrect']) {
for (const approach of ['string', 'url', 'module']) {
try {
testBegin(JSON.stringify({ esm, min, worker, mime, approach }))
const esbuild = esm
? await import('/npm/esbuild-wasm/esm/browser' + (min ? '.min' : '') + '.js?' + Math.random())
: await loadScript('/npm/esbuild-wasm/lib/browser' + (min ? '.min' : '') + '.js?' + Math.random())
const url = mime === 'correct' ? '/npm/esbuild-wasm/esbuild.wasm' : '/scripts/browser/esbuild.wasm.bagel'
const initializePromise = {
string: () => esbuild.initialize({ wasmURL: url, worker }),
url: () => esbuild.initialize({ wasmURL: new URL(url, location.href), worker }),
module: () => fetch(url)
.then(r => r.arrayBuffer())
.then(bytes => WebAssembly.compile(bytes))
.then(module => esbuild.initialize({ wasmModule: module, worker })),
}[approach]()
await initializePromise
await runAllTests({ esbuild })
testEnd(null)
} catch (e) {
testEnd(JSON.stringify({
test: e.test || null,
stack: e.stack || null,
error: (e && e.message || e) + '',
}))
}
}
}
}
}
}
testDone()
}
testStart()
</script>