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c202f4c05e4bd9fb80272d3cecb33b24f037a4cb
esbuild/scripts/js-api-tests.js
Evan Wallace c202f4c05e fix #857: more hoisting edge cases
2021-02-20 19:25:10 -08:00

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const { installForTests, removeRecursiveSync, writeFileAtomic } = require('./esbuild')
const { SourceMapConsumer } = require('source-map')
const assert = require('assert')
const path = require('path')
const http = require('http')
const fs = require('fs')
const vm = require('vm')
const readFileAsync = fs.promises.readFile
const writeFileAsync = fs.promises.writeFile
const mkdirAsync = fs.promises.mkdir
const repoDir = path.dirname(__dirname)
const rootTestDir = path.join(repoDir, 'scripts', '.js-api-tests')
let buildTests = {
async errorIfEntryPointsNotArray({ esbuild }) {
try {
await esbuild.build({ entryPoints: 'this is not an array', logLevel: 'silent' })
throw new Error('Expected build failure');
} catch (e) {
if (!e.errors || !e.errors[0] || e.errors[0].text !== '"entryPoints" must be an array') {
throw e;
}
}
},
async errorIfBadWorkingDirectory({ esbuild }) {
try {
await esbuild.build({
absWorkingDir: 'what is this? certainly not an absolute path',
logLevel: 'silent',
write: false,
})
throw new Error('Expected build failure');
} catch (e) {
if (e.message !== 'Build failed with 1 error:\nerror: The working directory ' +
'"what is this? certainly not an absolute path" is not an absolute path') {
throw e;
}
}
},
async workingDirTest({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
let aDir = path.join(testDir, 'a');
let bDir = path.join(testDir, 'b');
let aFile = path.join(aDir, 'a-in.js');
let bFile = path.join(bDir, 'b-in.js');
let aOut = path.join(aDir, 'a-out.js');
let bOut = path.join(bDir, 'b-out.js');
fs.mkdirSync(aDir, { recursive: true });
fs.mkdirSync(bDir, { recursive: true });
fs.writeFileSync(aFile, 'exports.x = true');
fs.writeFileSync(bFile, 'exports.y = true');
await Promise.all([
toTest.build({
entryPoints: [path.basename(aFile)],
outfile: path.basename(aOut),
absWorkingDir: aDir,
}),
toTest.build({
entryPoints: [path.basename(bFile)],
outfile: path.basename(bOut),
absWorkingDir: bDir,
}),
]);
assert.strictEqual(require(aOut).x, true)
assert.strictEqual(require(bOut).y, true)
}
},
async nodePathsTest({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
let srcDir = path.join(testDir, 'src');
let pkgDir = path.join(testDir, 'pkg');
let outfile = path.join(testDir, 'out.js');
let entry = path.join(srcDir, 'entry.js');
let other = path.join(pkgDir, 'other.js');
fs.mkdirSync(srcDir, { recursive: true });
fs.mkdirSync(pkgDir, { recursive: true });
fs.writeFileSync(entry, `export {x} from 'other'`);
fs.writeFileSync(other, `export let x = 123`);
await toTest.build({
entryPoints: [entry],
outfile,
bundle: true,
nodePaths: [pkgDir],
format: 'cjs',
})
assert.strictEqual(require(outfile).x, 123)
}
},
async es6_to_cjs({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, 'export default 123')
const value = await esbuild.build({ entryPoints: [input], bundle: true, outfile: output, format: 'cjs' })
assert.strictEqual(value.outputFiles, void 0)
const result = require(output)
assert.strictEqual(result.default, 123)
assert.strictEqual(result.__esModule, true)
},
// Test recursive directory creation
async recursiveMkdir({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'a/b/c/d/out.js')
await writeFileAsync(input, 'export default 123')
await esbuild.build({ entryPoints: [input], bundle: true, outfile: output, format: 'cjs' })
const result = require(output)
assert.strictEqual(result.default, 123)
assert.strictEqual(result.__esModule, true)
},
async outExtensionJS({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'in.mjs')
await writeFileAsync(input, 'console.log("test")')
await esbuild.build({ entryPoints: [input], outdir: testDir, outExtension: { '.js': '.mjs' } })
const mjs = await readFileAsync(output, 'utf8')
assert.strictEqual(mjs, 'console.log("test");\n')
},
async outExtensionCSS({ esbuild, testDir }) {
const input = path.join(testDir, 'in.css')
const output = path.join(testDir, 'in.notcss')
await writeFileAsync(input, 'body {}')
await esbuild.build({ entryPoints: [input], outdir: testDir, outExtension: { '.css': '.notcss' } })
const notcss = await readFileAsync(output, 'utf8')
assert.strictEqual(notcss, 'body {\n}\n')
},
async sourceMap({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
const content = 'exports.foo = 123'
await writeFileAsync(input, content)
await esbuild.build({ entryPoints: [input], outfile: output, sourcemap: true })
const result = require(output)
assert.strictEqual(result.foo, 123)
const outputFile = await readFileAsync(output, 'utf8')
const match = /\/\/# sourceMappingURL=(.*)/.exec(outputFile)
assert.strictEqual(match[1], 'out.js.map')
const resultMap = await readFileAsync(output + '.map', 'utf8')
const json = JSON.parse(resultMap)
assert.strictEqual(json.version, 3)
assert.strictEqual(json.sources[0], path.basename(input))
assert.strictEqual(json.sourcesContent[0], content)
},
async sourceMapExternal({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
const content = 'exports.foo = 123'
await writeFileAsync(input, content)
await esbuild.build({ entryPoints: [input], outfile: output, sourcemap: 'external' })
const result = require(output)
assert.strictEqual(result.foo, 123)
const outputFile = await readFileAsync(output, 'utf8')
const match = /\/\/# sourceMappingURL=(.*)/.exec(outputFile)
assert.strictEqual(match, null)
const resultMap = await readFileAsync(output + '.map', 'utf8')
const json = JSON.parse(resultMap)
assert.strictEqual(json.version, 3)
assert.strictEqual(json.sources[0], path.basename(input))
assert.strictEqual(json.sourcesContent[0], content)
},
async sourceMapInline({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
const content = 'exports.foo = 123'
await writeFileAsync(input, content)
await esbuild.build({ entryPoints: [input], outfile: output, sourcemap: 'inline' })
const result = require(output)
assert.strictEqual(result.foo, 123)
const outputFile = await readFileAsync(output, 'utf8')
const match = /\/\/# sourceMappingURL=data:application\/json;base64,(.*)/.exec(outputFile)
const json = JSON.parse(Buffer.from(match[1], 'base64').toString())
assert.strictEqual(json.version, 3)
assert.strictEqual(json.sources[0], path.basename(input))
assert.strictEqual(json.sourcesContent[0], content)
},
async sourceMapBoth({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
const content = 'exports.foo = 123'
await writeFileAsync(input, content)
await esbuild.build({ entryPoints: [input], outfile: output, sourcemap: 'both' })
const result = require(output)
assert.strictEqual(result.foo, 123)
const outputFile = await readFileAsync(output, 'utf8')
const match = /\/\/# sourceMappingURL=data:application\/json;base64,(.*)/.exec(outputFile)
const json = JSON.parse(Buffer.from(match[1], 'base64').toString())
assert.strictEqual(json.version, 3)
assert.strictEqual(json.sources[0], path.basename(input))
assert.strictEqual(json.sourcesContent[0], content)
const outputFileMap = await readFileAsync(output + '.map', 'utf8')
assert.strictEqual(Buffer.from(match[1], 'base64').toString(), outputFileMap)
},
async sourceMapIncludeSourcesContent({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
const content = 'exports.foo = 123'
await writeFileAsync(input, content)
await esbuild.build({ entryPoints: [input], outfile: output, sourcemap: true, sourcesContent: true })
const result = require(output)
assert.strictEqual(result.foo, 123)
const outputFile = await readFileAsync(output, 'utf8')
const match = /\/\/# sourceMappingURL=(.*)/.exec(outputFile)
assert.strictEqual(match[1], 'out.js.map')
const resultMap = await readFileAsync(output + '.map', 'utf8')
const json = JSON.parse(resultMap)
assert.strictEqual(json.version, 3)
assert.strictEqual(json.sources[0], path.basename(input))
assert.strictEqual(json.sourcesContent[0], content)
},
async sourceMapExcludeSourcesContent({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
const content = 'exports.foo = 123'
await writeFileAsync(input, content)
await esbuild.build({ entryPoints: [input], outfile: output, sourcemap: true, sourcesContent: false })
const result = require(output)
assert.strictEqual(result.foo, 123)
const outputFile = await readFileAsync(output, 'utf8')
const match = /\/\/# sourceMappingURL=(.*)/.exec(outputFile)
assert.strictEqual(match[1], 'out.js.map')
const resultMap = await readFileAsync(output + '.map', 'utf8')
const json = JSON.parse(resultMap)
assert.strictEqual(json.version, 3)
assert.strictEqual(json.sources[0], path.basename(input))
assert.strictEqual(json.sourcesContent, void 0)
},
async sourceMapWithDisabledFile({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const disabled = path.join(testDir, 'disabled.js')
const packageJSON = path.join(testDir, 'package.json')
const output = path.join(testDir, 'out.js')
const content = 'exports.foo = require("./disabled")'
await writeFileAsync(input, content)
await writeFileAsync(disabled, 'module.exports = 123')
await writeFileAsync(packageJSON, `{"browser": {"./disabled.js": false}}`)
await esbuild.build({ entryPoints: [input], outfile: output, sourcemap: true, bundle: true })
const result = require(output)
assert.strictEqual(result.foo, void 0)
const resultMap = await readFileAsync(output + '.map', 'utf8')
const json = JSON.parse(resultMap)
assert.strictEqual(json.version, 3)
assert.strictEqual(json.sources[0], path.basename(disabled))
assert.strictEqual(json.sources[1], path.basename(input))
assert.strictEqual(json.sourcesContent[0], '')
assert.strictEqual(json.sourcesContent[1], content)
},
async sourceMapWithDisabledModule({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const disabled = path.join(testDir, 'node_modules', 'disabled', 'index.js')
const packageJSON = path.join(testDir, 'package.json')
const output = path.join(testDir, 'out.js')
const content = 'exports.foo = require("disabled")'
await mkdirAsync(path.dirname(disabled), { recursive: true })
await writeFileAsync(input, content)
await writeFileAsync(disabled, 'module.exports = 123')
await writeFileAsync(packageJSON, `{"browser": {"disabled": false}}`)
await esbuild.build({ entryPoints: [input], outfile: output, sourcemap: true, bundle: true })
const result = require(output)
assert.strictEqual(result.foo, void 0)
const resultMap = await readFileAsync(output + '.map', 'utf8')
const json = JSON.parse(resultMap)
assert.strictEqual(json.version, 3)
assert.strictEqual(json.sources[0], path.relative(testDir, disabled).split(path.sep).join('/'))
assert.strictEqual(json.sources[1], path.basename(input))
assert.strictEqual(json.sourcesContent[0], '')
assert.strictEqual(json.sourcesContent[1], content)
},
async resolveExtensionOrder({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js');
const inputBare = path.join(testDir, 'module.js')
const inputSomething = path.join(testDir, 'module.something.js')
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, 'exports.result = require("./module").foo')
await writeFileAsync(inputBare, 'exports.foo = 321')
await writeFileAsync(inputSomething, 'exports.foo = 123')
await esbuild.build({
entryPoints: [input],
outfile: output,
format: 'cjs',
bundle: true,
resolveExtensions: ['.something.js', '.js'],
})
assert.strictEqual(require(output).result, 123)
},
async defineObject({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js');
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, 'export default {abc, xyz}')
await esbuild.build({
entryPoints: [input],
outfile: output,
format: 'cjs',
bundle: true,
define: {
abc: '["a", "b", "c"]',
xyz: '{"x": 1, "y": 2, "z": 3}',
},
})
assert.deepStrictEqual(require(output).default, {
abc: ['a', 'b', 'c'],
xyz: { x: 1, y: 2, z: 3 },
})
},
async inject({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js');
const inject = path.join(testDir, 'inject.js')
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, 'export default foo * 10 + 4')
await writeFileAsync(inject, 'export let foo = 123')
await esbuild.build({
entryPoints: [input],
outfile: output,
format: 'cjs',
bundle: true,
inject: [inject],
})
assert.strictEqual(require(output).default, 1234)
},
async mainFields({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
const mainFieldsDir = path.join(testDir, 'node_modules', 'main-fields-test')
const mainFieldsA = path.join(mainFieldsDir, 'a.js')
const mainFieldsB = path.join(mainFieldsDir, 'b.js')
const mainFieldsPackage = path.join(mainFieldsDir, 'package.json')
await mkdirAsync(mainFieldsDir, { recursive: true })
await writeFileAsync(input, 'export * from "main-fields-test"')
await writeFileAsync(mainFieldsA, 'export let foo = "a"')
await writeFileAsync(mainFieldsB, 'export let foo = "b"')
await writeFileAsync(mainFieldsPackage, '{ "a": "./a.js", "b": "./b.js", "c": "./c.js" }')
await esbuild.build({ entryPoints: [input], outfile: output, bundle: true, format: 'cjs', mainFields: ['c', 'b', 'a'] })
const result = require(output)
assert.strictEqual(result.foo, 'b')
},
async requireAbsolutePath({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const dependency = path.join(testDir, 'dep.js')
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, `import value from ${JSON.stringify(dependency)}; export default value`)
await writeFileAsync(dependency, `export default 123`)
const value = await esbuild.build({ entryPoints: [input], bundle: true, outfile: output, format: 'cjs' })
assert.strictEqual(value.outputFiles, void 0)
const result = require(output)
assert.strictEqual(result.default, 123)
assert.strictEqual(result.__esModule, true)
},
async fileLoader({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const data = path.join(testDir, 'data.bin')
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, `export {default as value} from ${JSON.stringify(data)}`)
await writeFileAsync(data, `stuff`)
const value = await esbuild.build({
entryPoints: [input],
bundle: true,
outfile: output,
format: 'cjs',
loader: { '.bin': 'file' },
})
assert.strictEqual(value.outputFiles, void 0)
const result = require(output)
assert.strictEqual(result.value, 'data.L3XDQOAT.bin')
assert.strictEqual(result.__esModule, true)
},
async splittingPublicPath({ esbuild, testDir }) {
const input1 = path.join(testDir, 'a', 'in1.js')
const input2 = path.join(testDir, 'b', 'in2.js')
const shared = path.join(testDir, 'c', 'shared.js')
const outdir = path.join(testDir, 'out')
await mkdirAsync(path.dirname(input1), { recursive: true })
await mkdirAsync(path.dirname(input2), { recursive: true })
await mkdirAsync(path.dirname(shared), { recursive: true })
await writeFileAsync(input1, `export {default as input1} from ${JSON.stringify(shared)}`)
await writeFileAsync(input2, `export {default as input2} from ${JSON.stringify(shared)}`)
await writeFileAsync(shared, `export default function foo() { return 123 }`)
const value = await esbuild.build({
entryPoints: [input1, input2],
bundle: true,
outdir,
format: 'esm',
splitting: true,
publicPath: 'https://www.example.com/assets',
write: false,
})
assert.deepStrictEqual(value.outputFiles.length, 3)
assert.deepStrictEqual(value.outputFiles[0].path, path.join(outdir, 'a', 'in1.js'))
assert.deepStrictEqual(value.outputFiles[1].path, path.join(outdir, 'b', 'in2.js'))
assert.deepStrictEqual(value.outputFiles[2].path, path.join(outdir, 'chunk.F3VMEPVO.js'))
assert.deepStrictEqual(value.outputFiles[0].text, `import {
foo
} from "https://www.example.com/assets/chunk.F3VMEPVO.js";
export {
foo as input1
};
`)
assert.deepStrictEqual(value.outputFiles[1].text, `import {
foo
} from "https://www.example.com/assets/chunk.F3VMEPVO.js";
export {
foo as input2
};
`)
assert.deepStrictEqual(value.outputFiles[2].text, `// scripts/.js-api-tests/splittingPublicPath/c/shared.js
function foo() {
return 123;
}
export {
foo
};
`)
},
async fileLoaderPublicPath({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const data = path.join(testDir, 'data.bin')
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, `export {default as value} from ${JSON.stringify(data)}`)
await writeFileAsync(data, `stuff`)
const value = await esbuild.build({
entryPoints: [input],
bundle: true,
outfile: output,
format: 'cjs',
loader: { '.bin': 'file' },
publicPath: 'https://www.example.com/assets',
})
assert.strictEqual(value.outputFiles, void 0)
const result = require(output)
assert.strictEqual(result.value, 'https://www.example.com/assets/data.L3XDQOAT.bin')
assert.strictEqual(result.__esModule, true)
},
async fileLoaderCSS({ esbuild, testDir }) {
const input = path.join(testDir, 'in.css')
const data = path.join(testDir, 'data.bin')
const output = path.join(testDir, 'out.css')
await writeFileAsync(input, `body { background: url(${JSON.stringify(data)}) }`)
await writeFileAsync(data, `stuff`)
const value = await esbuild.build({
entryPoints: [input],
bundle: true,
outfile: output,
loader: { '.bin': 'file' },
publicPath: 'https://www.example.com/assets',
})
assert.strictEqual(value.outputFiles, void 0)
assert.strictEqual(await readFileAsync(output, 'utf8'), `/* scripts/.js-api-tests/fileLoaderCSS/in.css */
body {
background: url(https://www.example.com/assets/data.L3XDQOAT.bin);
}
`)
},
async fileLoaderBinaryVsText({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const valid = path.join(testDir, 'valid.bin')
const invalid = path.join(testDir, 'invalid.bin')
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, `
import valid from ${JSON.stringify(valid)}
import invalid from ${JSON.stringify(invalid)}
console.log(valid, invalid)
`)
await writeFileAsync(valid, Buffer.from([0xCF, 0x80]))
await writeFileAsync(invalid, Buffer.from([0x80, 0xCF]))
const value = await esbuild.build({
entryPoints: [input],
bundle: true,
outfile: output,
format: 'cjs',
loader: { '.bin': 'file' },
write: false,
})
assert.strictEqual(value.outputFiles.length, 3)
// Valid UTF-8 should decode correctly
assert.deepEqual(value.outputFiles[0].contents, new Uint8Array([207, 128]))
assert.strictEqual(value.outputFiles[0].text, 'π')
// Invalid UTF-8 should be preserved as bytes but should be replaced by the U+FFFD replacement character when decoded
assert.deepEqual(value.outputFiles[1].contents, new Uint8Array([128, 207]))
assert.strictEqual(value.outputFiles[1].text, '\uFFFD\uFFFD')
},
async metafile({ esbuild, testDir }) {
const entry = path.join(testDir, 'entry.js')
const imported = path.join(testDir, 'imported.js')
const text = path.join(testDir, 'text.txt')
const css = path.join(testDir, 'example.css')
const output = path.join(testDir, 'out.js')
const meta = path.join(testDir, 'meta.json')
await writeFileAsync(entry, `
import x from "./imported"
const y = require("./text.txt")
import * as z from "./example.css"
console.log(x, y, z)
`)
await writeFileAsync(imported, 'export default 123')
await writeFileAsync(text, 'some text')
await writeFileAsync(css, 'body { some: css; }')
await esbuild.build({
entryPoints: [entry],
bundle: true,
outfile: output,
metafile: meta,
sourcemap: true,
loader: { '.txt': 'file' },
})
const json = JSON.parse(await readFileAsync(meta))
assert.strictEqual(Object.keys(json.inputs).length, 4)
assert.strictEqual(Object.keys(json.outputs).length, 4)
const cwd = process.cwd()
const makePath = absPath => path.relative(cwd, absPath).split(path.sep).join('/')
// Check inputs
assert.deepStrictEqual(json.inputs[makePath(entry)].bytes, 144)
assert.deepStrictEqual(json.inputs[makePath(entry)].imports, [
{ path: makePath(imported), kind: 'import-statement' },
{ path: makePath(css), kind: 'import-statement' },
{ path: makePath(text), kind: 'require-call' },
])
assert.deepStrictEqual(json.inputs[makePath(imported)].bytes, 18)
assert.deepStrictEqual(json.inputs[makePath(imported)].imports, [])
assert.deepStrictEqual(json.inputs[makePath(text)].bytes, 9)
assert.deepStrictEqual(json.inputs[makePath(text)].imports, [])
assert.deepStrictEqual(json.inputs[makePath(css)].bytes, 19)
assert.deepStrictEqual(json.inputs[makePath(css)].imports, [])
// Check outputs
assert.strictEqual(typeof json.outputs[makePath(output)].bytes, 'number')
assert.strictEqual(typeof json.outputs[makePath(output) + '.map'].bytes, 'number')
assert.deepStrictEqual(json.outputs[makePath(output) + '.map'].imports, [])
assert.deepStrictEqual(json.outputs[makePath(output) + '.map'].exports, [])
assert.deepStrictEqual(json.outputs[makePath(output) + '.map'].inputs, {})
// Check inputs for main output
const outputInputs = json.outputs[makePath(output)].inputs
assert.strictEqual(Object.keys(outputInputs).length, 4)
assert.strictEqual(typeof outputInputs[makePath(entry)].bytesInOutput, 'number')
assert.strictEqual(typeof outputInputs[makePath(imported)].bytesInOutput, 'number')
assert.strictEqual(typeof outputInputs[makePath(text)].bytesInOutput, 'number')
assert.strictEqual(typeof outputInputs[makePath(css)].bytesInOutput, 'number')
},
async metafileSplitting({ esbuild, testDir }) {
const entry1 = path.join(testDir, 'entry1.js')
const entry2 = path.join(testDir, 'entry2.js')
const imported = path.join(testDir, 'imported.js')
const outdir = path.join(testDir, 'out')
const metafile = path.join(testDir, 'meta.json')
await writeFileAsync(entry1, `
import x, {f1} from "./${path.basename(imported)}"
console.log(1, x, f1())
export {x}
`)
await writeFileAsync(entry2, `
import x, {f2} from "./${path.basename(imported)}"
console.log('entry 2', x, f2())
export {x as y}
`)
await writeFileAsync(imported, `
export default 123
export function f1() {}
export function f2() {}
console.log('shared')
`)
await esbuild.build({
entryPoints: [entry1, entry2],
bundle: true,
outdir,
metafile,
splitting: true,
format: 'esm',
})
const json = JSON.parse(await readFileAsync(metafile))
assert.strictEqual(Object.keys(json.inputs).length, 3)
assert.strictEqual(Object.keys(json.outputs).length, 3)
const cwd = process.cwd()
const makeOutPath = basename => path.relative(cwd, path.join(outdir, basename)).split(path.sep).join('/')
const makeInPath = pathname => path.relative(cwd, pathname).split(path.sep).join('/')
// Check metafile
const inEntry1 = makeInPath(entry1);
const inEntry2 = makeInPath(entry2);
const inImported = makeInPath(imported);
const chunk = 'chunk.F5FFNMME.js';
const outEntry1 = makeOutPath(path.basename(entry1));
const outEntry2 = makeOutPath(path.basename(entry2));
const outChunk = makeOutPath(chunk);
assert.deepStrictEqual(json.inputs[inEntry1], { bytes: 94, imports: [{ path: inImported, kind: 'import-statement' }] })
assert.deepStrictEqual(json.inputs[inEntry2], { bytes: 107, imports: [{ path: inImported, kind: 'import-statement' }] })
assert.deepStrictEqual(json.inputs[inImported], { bytes: 118, imports: [] })
assert.deepStrictEqual(json.outputs[outEntry1].imports, [{ path: makeOutPath(chunk), kind: 'import-statement' }])
assert.deepStrictEqual(json.outputs[outEntry2].imports, [{ path: makeOutPath(chunk), kind: 'import-statement' }])
assert.deepStrictEqual(json.outputs[outChunk].imports, [])
assert.deepStrictEqual(json.outputs[outEntry1].exports, ['x'])
assert.deepStrictEqual(json.outputs[outEntry2].exports, ['y'])
assert.deepStrictEqual(json.outputs[outChunk].exports, ['imported_default'])
assert.deepStrictEqual(json.outputs[outEntry1].inputs, { [inImported]: { bytesInOutput: 18 }, [inEntry1]: { bytesInOutput: 40 } })
assert.deepStrictEqual(json.outputs[outEntry2].inputs, { [inImported]: { bytesInOutput: 18 }, [inEntry2]: { bytesInOutput: 48 } })
assert.deepStrictEqual(json.outputs[outChunk].inputs, { [inImported]: { bytesInOutput: 51 } })
},
async metafileSplittingPublicPath({ esbuild, testDir }) {
const entry1 = path.join(testDir, 'entry1.js')
const entry2 = path.join(testDir, 'entry2.js')
const imported = path.join(testDir, 'imported.js')
const outdir = path.join(testDir, 'out')
const metafile = path.join(testDir, 'meta.json')
await writeFileAsync(entry1, `
import x, {f1} from "./${path.basename(imported)}"
console.log(1, x, f1())
export {x}
`)
await writeFileAsync(entry2, `
import x, {f2} from "./${path.basename(imported)}"
console.log('entry 2', x, f2())
export {x as y}
`)
await writeFileAsync(imported, `
export default 123
export function f1() {}
export function f2() {}
console.log('shared')
`)
await esbuild.build({
entryPoints: [entry1, entry2],
bundle: true,
outdir,
metafile,
splitting: true,
format: 'esm',
publicPath: 'public',
})
const json = JSON.parse(await readFileAsync(metafile))
assert.strictEqual(Object.keys(json.inputs).length, 3)
assert.strictEqual(Object.keys(json.outputs).length, 3)
const cwd = process.cwd()
const makeOutPath = basename => path.relative(cwd, path.join(outdir, basename)).split(path.sep).join('/')
const makeInPath = pathname => path.relative(cwd, pathname).split(path.sep).join('/')
// Check metafile
const inEntry1 = makeInPath(entry1);
const inEntry2 = makeInPath(entry2);
const inImported = makeInPath(imported);
const chunk = 'chunk.CAAA46JO.js';
const outEntry1 = makeOutPath(path.basename(entry1));
const outEntry2 = makeOutPath(path.basename(entry2));
const outChunk = makeOutPath(chunk);
assert.deepStrictEqual(json.inputs[inEntry1], { bytes: 94, imports: [{ path: inImported, kind: 'import-statement' }] })
assert.deepStrictEqual(json.inputs[inEntry2], { bytes: 107, imports: [{ path: inImported, kind: 'import-statement' }] })
assert.deepStrictEqual(json.inputs[inImported], { bytes: 118, imports: [] })
assert.deepStrictEqual(json.outputs[outEntry1].imports, [{ path: makeOutPath(chunk), kind: 'import-statement' }])
assert.deepStrictEqual(json.outputs[outEntry2].imports, [{ path: makeOutPath(chunk), kind: 'import-statement' }])
assert.deepStrictEqual(json.outputs[outChunk].imports, [])
assert.deepStrictEqual(json.outputs[outEntry1].exports, ['x'])
assert.deepStrictEqual(json.outputs[outEntry2].exports, ['y'])
assert.deepStrictEqual(json.outputs[outChunk].exports, ['imported_default'])
assert.deepStrictEqual(json.outputs[outEntry1].inputs, { [inImported]: { bytesInOutput: 18 }, [inEntry1]: { bytesInOutput: 40 } })
assert.deepStrictEqual(json.outputs[outEntry2].inputs, { [inImported]: { bytesInOutput: 18 }, [inEntry2]: { bytesInOutput: 48 } })
assert.deepStrictEqual(json.outputs[outChunk].inputs, { [inImported]: { bytesInOutput: 51 } })
},
async metafileSplittingDoubleDynamicImport({ esbuild, testDir }) {
const entry = path.join(testDir, 'entry.js')
const importDir = path.join(testDir, 'import-dir')
const import1 = path.join(importDir, 'import1.js')
const import2 = path.join(importDir, 'import2.js')
const shared = path.join(testDir, 'shared.js')
const outdir = path.join(testDir, 'out')
const metafile = path.join(testDir, 'meta.json')
const makeImportPath = (importing, imported) => JSON.stringify('./' + path.relative(path.dirname(importing), imported).split(path.sep).join('/'))
await mkdirAsync(importDir)
await writeFileAsync(entry, `
import ${makeImportPath(entry, shared)}
import(${makeImportPath(entry, import1)})
import(${makeImportPath(entry, import2)})
`)
await writeFileAsync(import1, `
import ${makeImportPath(import1, shared)}
`)
await writeFileAsync(import2, `
import ${makeImportPath(import2, shared)}
`)
await writeFileAsync(shared, `
console.log('side effect')
`)
await esbuild.build({
entryPoints: [entry],
bundle: true,
outdir,
metafile,
splitting: true,
format: 'esm',
})
const json = JSON.parse(await readFileAsync(metafile))
assert.strictEqual(Object.keys(json.inputs).length, 4)
assert.strictEqual(Object.keys(json.outputs).length, 4)
const cwd = process.cwd()
const makeOutPath = basename => path.relative(cwd, path.join(outdir, basename)).split(path.sep).join('/')
const makeInPath = pathname => path.relative(cwd, pathname).split(path.sep).join('/')
// Check metafile
const inEntry = makeInPath(entry);
const inImport1 = makeInPath(import1);
const inImport2 = makeInPath(import2);
const inShared = makeInPath(shared);
const chunk = 'chunk.27QEWJHV.js';
const outEntry = makeOutPath(path.relative(testDir, entry));
const outImport1 = makeOutPath(path.relative(testDir, import1));
const outImport2 = makeOutPath(path.relative(testDir, import2));
const outChunk = makeOutPath(chunk);
assert.deepStrictEqual(json.inputs[inEntry], {
bytes: 112,
imports: [
{ path: inShared, kind: 'import-statement' },
{ path: inImport1, kind: 'dynamic-import' },
{ path: inImport2, kind: 'dynamic-import' },
]
})
assert.deepStrictEqual(json.inputs[inImport1], {
bytes: 35,
imports: [
{ path: inShared, kind: 'import-statement' },
]
})
assert.deepStrictEqual(json.inputs[inImport2], {
bytes: 35,
imports: [
{ path: inShared, kind: 'import-statement' },
]
})
assert.deepStrictEqual(json.inputs[inShared], { bytes: 38, imports: [] })
assert.deepStrictEqual(json.outputs[outEntry].imports, [{ path: makeOutPath(chunk), kind: 'import-statement' }])
assert.deepStrictEqual(json.outputs[outImport1].imports, [{ path: makeOutPath(chunk), kind: 'import-statement' }])
assert.deepStrictEqual(json.outputs[outImport2].imports, [{ path: makeOutPath(chunk), kind: 'import-statement' }])
assert.deepStrictEqual(json.outputs[outChunk].imports, [])
assert.deepStrictEqual(json.outputs[outEntry].exports, [])
assert.deepStrictEqual(json.outputs[outImport1].exports, [])
assert.deepStrictEqual(json.outputs[outImport2].exports, [])
assert.deepStrictEqual(json.outputs[outChunk].exports, [])
assert.deepStrictEqual(json.outputs[outEntry].inputs, { [inEntry]: { bytesInOutput: 70 } })
assert.deepStrictEqual(json.outputs[outImport1].inputs, {})
assert.deepStrictEqual(json.outputs[outImport2].inputs, {})
assert.deepStrictEqual(json.outputs[outChunk].inputs, { [inShared]: { bytesInOutput: 28 } })
},
async metafileCJSInFormatIIFE({ esbuild, testDir }) {
const entry = path.join(testDir, 'entry.js')
const outfile = path.join(testDir, 'out.js')
const metafile = path.join(testDir, 'meta.json')
await writeFileAsync(entry, `module.exports = {}`)
await esbuild.build({
entryPoints: [entry],
outfile,
metafile,
format: 'iife',
})
const cwd = process.cwd()
const makePath = pathname => path.relative(cwd, pathname).split(path.sep).join('/')
const json = JSON.parse(await readFileAsync(metafile))
assert.deepStrictEqual(json.inputs[makePath(entry)].imports, [])
assert.deepStrictEqual(json.outputs[makePath(outfile)].imports, [])
assert.deepStrictEqual(json.outputs[makePath(outfile)].exports, [])
},
async metafileCJSInFormatCJS({ esbuild, testDir }) {
const entry = path.join(testDir, 'entry.js')
const outfile = path.join(testDir, 'out.js')
const metafile = path.join(testDir, 'meta.json')
await writeFileAsync(entry, `module.exports = {}`)
await esbuild.build({
entryPoints: [entry],
outfile,
metafile,
format: 'cjs',
})
const cwd = process.cwd()
const makePath = pathname => path.relative(cwd, pathname).split(path.sep).join('/')
const json = JSON.parse(await readFileAsync(metafile))
assert.deepStrictEqual(json.inputs[makePath(entry)].imports, [])
assert.deepStrictEqual(json.outputs[makePath(outfile)].imports, [])
assert.deepStrictEqual(json.outputs[makePath(outfile)].exports, [])
},
async metafileCJSInFormatESM({ esbuild, testDir }) {
const entry = path.join(testDir, 'entry.js')
const outfile = path.join(testDir, 'out.js')
const metafile = path.join(testDir, 'meta.json')
await writeFileAsync(entry, `module.exports = {}`)
await esbuild.build({
entryPoints: [entry],
outfile,
metafile,
format: 'esm',
})
const cwd = process.cwd()
const makePath = pathname => path.relative(cwd, pathname).split(path.sep).join('/')
const json = JSON.parse(await readFileAsync(metafile))
assert.deepStrictEqual(json.inputs[makePath(entry)].imports, [])
assert.deepStrictEqual(json.outputs[makePath(outfile)].imports, [])
assert.deepStrictEqual(json.outputs[makePath(outfile)].exports, ['default'])
},
async metafileESMInFormatIIFE({ esbuild, testDir }) {
const entry = path.join(testDir, 'entry.js')
const outfile = path.join(testDir, 'out.js')
const metafile = path.join(testDir, 'meta.json')
await writeFileAsync(entry, `export let a = 1, b = 2`)
await esbuild.build({
entryPoints: [entry],
outfile,
metafile,
format: 'iife',
})
const cwd = process.cwd()
const makePath = pathname => path.relative(cwd, pathname).split(path.sep).join('/')
const json = JSON.parse(await readFileAsync(metafile))
assert.deepStrictEqual(json.inputs[makePath(entry)].imports, [])
assert.deepStrictEqual(json.outputs[makePath(outfile)].imports, [])
assert.deepStrictEqual(json.outputs[makePath(outfile)].exports, [])
},
async metafileESMInFormatCJS({ esbuild, testDir }) {
const entry = path.join(testDir, 'entry.js')
const outfile = path.join(testDir, 'out.js')
const metafile = path.join(testDir, 'meta.json')
await writeFileAsync(entry, `export let a = 1, b = 2`)
await esbuild.build({
entryPoints: [entry],
outfile,
metafile,
format: 'cjs',
})
const cwd = process.cwd()
const makePath = pathname => path.relative(cwd, pathname).split(path.sep).join('/')
const json = JSON.parse(await readFileAsync(metafile))
assert.deepStrictEqual(json.inputs[makePath(entry)].imports, [])
assert.deepStrictEqual(json.outputs[makePath(outfile)].imports, [])
assert.deepStrictEqual(json.outputs[makePath(outfile)].exports, [])
},
async metafileESMInFormatESM({ esbuild, testDir }) {
const entry = path.join(testDir, 'entry.js')
const outfile = path.join(testDir, 'out.js')
const metafile = path.join(testDir, 'meta.json')
await writeFileAsync(entry, `export let a = 1, b = 2`)
await esbuild.build({
entryPoints: [entry],
outfile,
metafile,
format: 'esm',
})
const cwd = process.cwd()
const makePath = pathname => path.relative(cwd, pathname).split(path.sep).join('/')
const json = JSON.parse(await readFileAsync(metafile))
assert.deepStrictEqual(json.inputs[makePath(entry)].imports, [])
assert.deepStrictEqual(json.outputs[makePath(outfile)].imports, [])
assert.deepStrictEqual(json.outputs[makePath(outfile)].exports, ['a', 'b'])
},
async metafileNestedExportNames({ esbuild, testDir }) {
const entry = path.join(testDir, 'entry.js')
const nested1 = path.join(testDir, 'nested1.js')
const nested2 = path.join(testDir, 'nested2.js')
const nested3 = path.join(testDir, 'nested3.js')
const outfile = path.join(testDir, 'out.js')
const metafile = path.join(testDir, 'meta.json')
await writeFileAsync(entry, `
export {nested1} from ${JSON.stringify(nested1)}
export * from ${JSON.stringify(nested2)}
export let topLevel = 0
`)
await writeFileAsync(nested1, `
import {nested3} from ${JSON.stringify(nested3)}
export default 1
export let nested1 = nested3
`)
await writeFileAsync(nested2, `
export default 'nested2'
export let nested2 = 2
`)
await writeFileAsync(nested3, `
export let nested3 = 3
`)
await esbuild.build({
entryPoints: [entry],
bundle: true,
outfile,
metafile,
format: 'esm',
})
const cwd = process.cwd()
const makePath = pathname => path.relative(cwd, pathname).split(path.sep).join('/')
const json = JSON.parse(await readFileAsync(metafile))
assert.deepStrictEqual(json.inputs[makePath(entry)].imports, [
{ path: makePath(nested1), kind: 'import-statement' },
{ path: makePath(nested2), kind: 'import-statement' },
])
assert.deepStrictEqual(json.inputs[makePath(nested1)].imports, [
{ path: makePath(nested3), kind: 'import-statement' },
])
assert.deepStrictEqual(json.inputs[makePath(nested2)].imports, [])
assert.deepStrictEqual(json.inputs[makePath(nested3)].imports, [])
assert.deepStrictEqual(json.outputs[makePath(outfile)].imports, [])
assert.deepStrictEqual(json.outputs[makePath(outfile)].exports, ['nested1', 'nested2', 'topLevel'])
},
async metafileCSS({ esbuild, testDir }) {
const entry = path.join(testDir, 'entry.css')
const imported = path.join(testDir, 'imported.css')
const image = path.join(testDir, 'example.png')
const output = path.join(testDir, 'out.css')
const meta = path.join(testDir, 'meta.json')
await writeFileAsync(entry, `
@import "./imported";
body { background: url(https://example.com/external.png) }
`)
await writeFileAsync(imported, `
a { background: url(./example.png) }
`)
await writeFileAsync(image, 'an image')
await esbuild.build({
entryPoints: [entry],
bundle: true,
outfile: output,
metafile: meta,
sourcemap: true,
loader: { '.png': 'dataurl' },
})
const json = JSON.parse(await readFileAsync(meta))
assert.strictEqual(Object.keys(json.inputs).length, 3)
assert.strictEqual(Object.keys(json.outputs).length, 1)
const cwd = process.cwd()
const makePath = absPath => path.relative(cwd, absPath).split(path.sep).join('/')
// Check inputs
assert.deepStrictEqual(json, {
inputs: {
[makePath(entry)]: { bytes: 98, imports: [{ path: makePath(imported), kind: 'import-rule' }] },
[makePath(image)]: { bytes: 8, imports: [] },
[makePath(imported)]: { bytes: 48, imports: [{ path: makePath(image), kind: 'url-token' }] },
},
outputs: {
[makePath(output)]: {
bytes: 227,
imports: [],
inputs: {
[makePath(entry)]: { bytesInOutput: 62 },
[makePath(imported)]: { bytesInOutput: 61 },
},
},
},
})
},
async metafileLoaderFileMultipleEntry({ esbuild, testDir }) {
const entry1 = path.join(testDir, 'entry1.js')
const entry2 = path.join(testDir, 'entry2.js')
const file = path.join(testDir, 'x.file')
const outdir = path.join(testDir, 'out')
const metafile = path.join(testDir, 'meta.json')
await writeFileAsync(entry1, `
export {default} from './x.file'
`)
await writeFileAsync(entry2, `
import z from './x.file'
console.log(z)
`)
await writeFileAsync(file, `This is a file`)
await esbuild.build({
entryPoints: [entry1, entry2],
bundle: true,
loader: { '.file': 'file' },
outdir,
metafile,
format: 'cjs',
})
const contents = await readFileAsync(metafile, 'utf8')
const json = JSON.parse(contents)
const cwd = process.cwd()
const makePath = pathname => path.relative(cwd, pathname).split(path.sep).join('/')
const fileName = require(path.join(outdir, 'entry1.js')).default
const fileKey = makePath(path.join(outdir, fileName))
assert.deepStrictEqual(json.outputs[fileKey].imports, [])
assert.deepStrictEqual(json.outputs[fileKey].exports, [])
assert.deepStrictEqual(json.outputs[fileKey].inputs, { [makePath(file)]: { bytesInOutput: 14 } })
// Make sure this key is only in the JSON metafile once
assert.deepStrictEqual(contents.split(JSON.stringify(fileKey)).length, 2)
},
// Test in-memory output files
async writeFalse({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
const metafile = path.join(testDir, 'meta.json')
const inputCode = 'console.log()'
await writeFileAsync(input, inputCode)
const value = await esbuild.build({
entryPoints: [input],
bundle: true,
outfile: output,
sourcemap: true,
format: 'esm',
metafile,
write: false,
})
assert.strictEqual(fs.existsSync(output), false)
assert.notStrictEqual(value.outputFiles, void 0)
assert.strictEqual(value.outputFiles.length, 3)
assert.strictEqual(value.outputFiles[0].path, output + '.map')
assert.strictEqual(value.outputFiles[0].contents.constructor, Uint8Array)
assert.strictEqual(value.outputFiles[1].path, output)
assert.strictEqual(value.outputFiles[1].contents.constructor, Uint8Array)
assert.strictEqual(value.outputFiles[2].path, metafile)
assert.strictEqual(value.outputFiles[2].contents.constructor, Uint8Array)
const sourceMap = JSON.parse(Buffer.from(value.outputFiles[0].contents).toString())
const js = Buffer.from(value.outputFiles[1].contents).toString()
assert.strictEqual(sourceMap.version, 3)
assert.strictEqual(js, `// scripts/.js-api-tests/writeFalse/in.js\nconsole.log();\n//# sourceMappingURL=out.js.map\n`)
const cwd = process.cwd()
const makePath = file => path.relative(cwd, file).split(path.sep).join('/')
const meta = JSON.parse(Buffer.from(value.outputFiles[2].contents).toString())
assert.strictEqual(meta.inputs[makePath(input)].bytes, inputCode.length)
assert.strictEqual(meta.outputs[makePath(output)].bytes, js.length)
assert.strictEqual(meta.outputs[makePath(output + '.map')].bytes, value.outputFiles[0].contents.length)
},
async splittingRelativeSameDir({ esbuild, testDir }) {
const inputA = path.join(testDir, 'a.js')
const inputB = path.join(testDir, 'b.js')
const inputCommon = path.join(testDir, 'common.js')
await writeFileAsync(inputA, `
import x from "./${path.basename(inputCommon)}"
console.log('a' + x)
`)
await writeFileAsync(inputB, `
import x from "./${path.basename(inputCommon)}"
console.log('b' + x)
`)
await writeFileAsync(inputCommon, `
export default 'common'
`)
const outdir = path.join(testDir, 'out')
const value = await esbuild.build({ entryPoints: [inputA, inputB], bundle: true, outdir, format: 'esm', splitting: true, write: false })
assert.strictEqual(value.outputFiles.length, 3)
// These should all use forward slashes, even on Windows
const chunk = 'chunk.CCY6SQWP.js'
assert.strictEqual(Buffer.from(value.outputFiles[0].contents).toString(), `import {
common_default
} from "./${chunk}";
// scripts/.js-api-tests/splittingRelativeSameDir/a.js
console.log("a" + common_default);
`)
assert.strictEqual(Buffer.from(value.outputFiles[1].contents).toString(), `import {
common_default
} from "./${chunk}";
// scripts/.js-api-tests/splittingRelativeSameDir/b.js
console.log("b" + common_default);
`)
assert.strictEqual(Buffer.from(value.outputFiles[2].contents).toString(), `// scripts/.js-api-tests/splittingRelativeSameDir/common.js
var common_default = "common";
export {
common_default
};
`)
assert.strictEqual(value.outputFiles[0].path, path.join(outdir, path.basename(inputA)))
assert.strictEqual(value.outputFiles[1].path, path.join(outdir, path.basename(inputB)))
assert.strictEqual(value.outputFiles[2].path, path.join(outdir, chunk))
},
async splittingRelativeNestedDir({ esbuild, testDir }) {
const inputA = path.join(testDir, 'a/demo.js')
const inputB = path.join(testDir, 'b/demo.js')
const inputCommon = path.join(testDir, 'common.js')
await mkdirAsync(path.dirname(inputA)).catch(x => x)
await mkdirAsync(path.dirname(inputB)).catch(x => x)
await writeFileAsync(inputA, `
import x from "../${path.basename(inputCommon)}"
console.log('a' + x)
`)
await writeFileAsync(inputB, `
import x from "../${path.basename(inputCommon)}"
console.log('b' + x)
`)
await writeFileAsync(inputCommon, `
export default 'common'
`)
const outdir = path.join(testDir, 'out')
const value = await esbuild.build({ entryPoints: [inputA, inputB], bundle: true, outdir, format: 'esm', splitting: true, write: false })
assert.strictEqual(value.outputFiles.length, 3)
// These should all use forward slashes, even on Windows
const chunk = 'chunk.5UCSUUDJ.js'
assert.strictEqual(Buffer.from(value.outputFiles[0].contents).toString(), `import {
common_default
} from "../${chunk}";
// scripts/.js-api-tests/splittingRelativeNestedDir/a/demo.js
console.log("a" + common_default);
`)
assert.strictEqual(Buffer.from(value.outputFiles[1].contents).toString(), `import {
common_default
} from "../${chunk}";
// scripts/.js-api-tests/splittingRelativeNestedDir/b/demo.js
console.log("b" + common_default);
`)
assert.strictEqual(Buffer.from(value.outputFiles[2].contents).toString(), `// scripts/.js-api-tests/splittingRelativeNestedDir/common.js
var common_default = "common";
export {
common_default
};
`)
assert.strictEqual(value.outputFiles[0].path, path.join(outdir, path.relative(testDir, inputA)))
assert.strictEqual(value.outputFiles[1].path, path.join(outdir, path.relative(testDir, inputB)))
assert.strictEqual(value.outputFiles[2].path, path.join(outdir, chunk))
},
async stdinStdoutBundle({ esbuild, testDir }) {
const auxiliary = path.join(testDir, 'auxiliary.js')
await writeFileAsync(auxiliary, 'export default 123')
const value = await esbuild.build({
stdin: {
contents: `
import x from './auxiliary.js'
console.log(x)
`,
resolveDir: testDir,
},
bundle: true,
write: false,
})
assert.strictEqual(value.outputFiles.length, 1)
assert.strictEqual(value.outputFiles[0].path, '<stdout>')
assert.strictEqual(Buffer.from(value.outputFiles[0].contents).toString(), `(() => {
// scripts/.js-api-tests/stdinStdoutBundle/auxiliary.js
var auxiliary_default = 123;
// <stdin>
console.log(auxiliary_default);
})();
`)
},
async stdinOutfileBundle({ esbuild, testDir }) {
const auxiliary = path.join(testDir, 'auxiliary.js')
const outfile = path.join(testDir, 'out.js')
await writeFileAsync(auxiliary, 'export default 123')
const value = await esbuild.build({
stdin: {
contents: `
import x from './auxiliary.js'
export {x as fromStdin}
`,
resolveDir: testDir,
},
bundle: true,
outfile,
format: 'cjs',
})
assert.strictEqual(value.outputFiles, void 0)
const result = require(outfile)
assert.strictEqual(result.fromStdin, 123)
},
async stdinAndEntryBundle({ esbuild, testDir }) {
const srcDir = path.join(testDir, 'src')
const entry = path.join(srcDir, 'entry.js')
const auxiliary = path.join(srcDir, 'auxiliary.js')
const outdir = path.join(testDir, 'out')
await mkdirAsync(srcDir)
await writeFileAsync(auxiliary, 'export default 123')
await writeFileAsync(entry, `
import x from './auxiliary.js'
export let fromEntry = x
`)
const value = await esbuild.build({
entryPoints: [entry],
stdin: {
contents: `
import x from './src/auxiliary.js'
export {x as fromStdin}
`,
resolveDir: testDir,
},
bundle: true,
outdir,
format: 'cjs',
})
assert.strictEqual(value.outputFiles, void 0)
const entryResult = require(path.join(outdir, path.basename(entry)))
assert.strictEqual(entryResult.fromEntry, 123)
const stdinResult = require(path.join(outdir, path.basename('stdin.js')))
assert.strictEqual(stdinResult.fromStdin, 123)
},
async forceTsConfig({ esbuild, testDir }) {
// ./tsconfig.json
// ./a/forced-config.json
// ./a/b/test-impl.js
// ./a/b/c/in.js
const aDir = path.join(testDir, 'a')
const bDir = path.join(aDir, 'b')
const cDir = path.join(bDir, 'c')
await mkdirAsync(aDir).catch(x => x)
await mkdirAsync(bDir).catch(x => x)
await mkdirAsync(cDir).catch(x => x)
const input = path.join(cDir, 'in.js')
const forced = path.join(bDir, 'test-impl.js')
const tsconfigIgnore = path.join(testDir, 'tsconfig.json')
const tsconfigForced = path.join(aDir, 'forced-config.json')
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, 'import "test"')
await writeFileAsync(forced, 'console.log("success")')
await writeFileAsync(tsconfigIgnore, '{"compilerOptions": {"baseUrl": "./a", "paths": {"test": ["./ignore.js"]}}}')
await writeFileAsync(tsconfigForced, '{"compilerOptions": {"baseUrl": "./b", "paths": {"test": ["./test-impl.js"]}}}')
await esbuild.build({ entryPoints: [input], bundle: true, outfile: output, tsconfig: tsconfigForced, format: 'esm' })
const result = await readFileAsync(output, 'utf8')
assert.strictEqual(result, `// scripts/.js-api-tests/forceTsConfig/a/b/test-impl.js
console.log("success");
`)
},
async es5({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const cjs = path.join(testDir, 'cjs.js')
const esm = path.join(testDir, 'esm.js')
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, `
export {foo} from "./cjs"
export * as bar from "./esm"
`)
await writeFileAsync(cjs, 'exports.foo = 123')
await writeFileAsync(esm, 'export var foo = 123')
const value = await esbuild.build({ entryPoints: [input], bundle: true, outfile: output, format: 'cjs', target: 'es5' })
assert.strictEqual(value.outputFiles, void 0)
const result = require(output)
assert.strictEqual(result.foo, 123)
assert.strictEqual(result.bar.foo, 123)
assert.strictEqual(result.__esModule, true)
const contents = await readFileAsync(output, 'utf8')
assert.strictEqual(contents.indexOf('=>'), -1)
assert.strictEqual(contents.indexOf('const'), -1)
},
async outbase({ esbuild, testDir }) {
const outbase = path.join(testDir, 'pages')
const b = path.join(outbase, 'a', 'b', 'index.js')
const c = path.join(outbase, 'a', 'c', 'index.js')
const outdir = path.join(testDir, 'outdir')
await mkdirAsync(path.dirname(b), { recursive: true })
await mkdirAsync(path.dirname(c), { recursive: true })
await writeFileAsync(b, 'module.exports = "b"')
await writeFileAsync(c, 'module.exports = "c"')
await esbuild.build({ entryPoints: [b, c], outdir, outbase, format: 'cjs' })
const outB = path.join(outdir, path.relative(outbase, b))
const outC = path.join(outdir, path.relative(outbase, c))
assert.strictEqual(require(outB), 'b')
assert.strictEqual(require(outC), 'c')
},
async bundleTreeShakingDefault({ esbuild }) {
const { outputFiles } = await esbuild.build({
stdin: {
contents: `
let removeMe1 = /* @__PURE__ */ fn();
let removeMe2 = <div/>;
`,
loader: 'jsx',
},
write: false,
bundle: true,
})
assert.strictEqual(outputFiles[0].text, `(() => {\n})();\n`)
},
async bundleTreeShakingTrue({ esbuild }) {
const { outputFiles } = await esbuild.build({
stdin: {
contents: `
let removeMe1 = /* @__PURE__ */ fn();
let removeMe2 = <div/>;
`,
loader: 'jsx',
},
write: false,
bundle: true,
treeShaking: true,
})
assert.strictEqual(outputFiles[0].text, `(() => {\n})();\n`)
},
async bundleTreeShakingIgnoreAnnotations({ esbuild }) {
const { outputFiles } = await esbuild.build({
stdin: {
contents: `
let keepMe1 = /* @__PURE__ */ fn();
let keepMe2 = <div/>;
`,
loader: 'jsx',
},
write: false,
bundle: true,
treeShaking: 'ignore-annotations',
})
assert.strictEqual(outputFiles[0].text, `(() => {
// <stdin>
var keepMe1 = fn();
var keepMe2 = React.createElement("div", null);
})();
`)
},
async externalWithWildcard({ esbuild }) {
const { outputFiles } = await esbuild.build({
stdin: {
contents: `require('/assets/file.png')`,
},
write: false,
bundle: true,
external: ['/assets/*.png'],
})
assert.strictEqual(outputFiles[0].text, `(() => {
// <stdin>
require("/assets/file.png");
})();
`)
},
async errorInvalidExternalWithTwoWildcards({ esbuild }) {
try {
await esbuild.build({ entryPoints: ['in.js'], external: ['a*b*c'], write: false, logLevel: 'silent' })
throw new Error('Expected build failure');
} catch (e) {
if (e.message !== 'Build failed with 1 error:\nerror: External path "a*b*c" cannot have more than one "*" wildcard') {
throw e;
}
}
},
async jsBannerBuild({ service, testDir }) {
const input = path.join(testDir, 'in.js')
const outfile = path.join(testDir, 'out.js')
await writeFileAsync(input, `if (!bannerDefined) throw 'fail'`)
await service.build({ entryPoints: [input], outfile, banner: 'const bannerDefined = true' })
require(outfile)
},
async jsFooterBuild({ service, testDir }) {
const input = path.join(testDir, 'in.js')
const outfile = path.join(testDir, 'out.js')
await writeFileAsync(input, `footer()`)
await service.build({ entryPoints: [input], outfile, footer: 'function footer() {}' })
require(outfile)
},
async jsBannerFooterBuild({ service, testDir }) {
const aPath = path.join(testDir, 'a.js')
const bPath = path.join(testDir, 'b.js')
const outdir = path.join(testDir, 'out')
await writeFileAsync(aPath, `module.exports = { banner: bannerDefined, footer };`)
await writeFileAsync(bPath, `module.exports = { banner: bannerDefined, footer };`)
await service.build({ entryPoints: [aPath, bPath], outdir, banner: 'const bannerDefined = true', footer: 'function footer() {}' })
const a = require(path.join(outdir, path.basename(aPath)))
const b = require(path.join(outdir, path.basename(bPath)))
if (!a.banner || !b.banner) throw 'fail'
a.footer()
b.footer()
},
async cssBannerFooterBuild({ service, testDir }) {
const input = path.join(testDir, 'in.css')
const outfile = path.join(testDir, 'out.css')
await writeFileAsync(input, `div { color: red }`)
await service.build({ entryPoints: [input], outfile, banner: '/* banner */', footer: '/* footer */' })
const code = await readFileAsync(outfile, 'utf8')
assert.strictEqual(code, `div {\n color: red;\n}\n`)
},
async buildRelativeIssue693({ service }) {
const result = await service.build({
stdin: {
contents: `const x=1`,
},
write: false,
outfile: 'esbuild.js',
});
assert.strictEqual(result.outputFiles.length, 1)
assert.strictEqual(result.outputFiles[0].path, path.join(process.cwd(), 'esbuild.js'))
assert.strictEqual(result.outputFiles[0].text, 'const x = 1;\n')
},
async noRebuild({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, `console.log('abc')`)
const result1 = await toTest.build({ entryPoints: [input], outfile: output, format: 'esm', incremental: false })
assert.strictEqual(result1.outputFiles, void 0)
assert.strictEqual(await readFileAsync(output, 'utf8'), `console.log("abc");\n`)
assert.strictEqual(result1.rebuild, void 0)
}
},
async rebuildBasic({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
// Build 1
await writeFileAsync(input, `console.log('abc')`)
const result1 = await toTest.build({ entryPoints: [input], outfile: output, format: 'esm', incremental: true })
assert.strictEqual(result1.outputFiles, void 0)
assert.strictEqual(await readFileAsync(output, 'utf8'), `console.log("abc");\n`)
// Build 2
await writeFileAsync(input, `console.log('xyz')`)
const result2 = await result1.rebuild();
assert.strictEqual(result2.rebuild, result1.rebuild)
assert.strictEqual(result2.outputFiles, void 0)
assert.strictEqual(await readFileAsync(output, 'utf8'), `console.log("xyz");\n`)
// Build 3
await writeFileAsync(input, `console.log(123)`)
const result3 = await result1.rebuild();
assert.strictEqual(result3.rebuild, result1.rebuild)
assert.strictEqual(result3.outputFiles, void 0)
assert.strictEqual(await readFileAsync(output, 'utf8'), `console.log(123);\n`)
// Further rebuilds should not be possible after a dispose
result1.rebuild.dispose()
try {
await result1.rebuild()
throw new Error('Expected an error to be thrown')
} catch (e) {
assert.strictEqual(e.message, 'Cannot rebuild')
}
}
},
async rebuildIndependent({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
const inputA = path.join(testDir, 'in-a.js')
const inputB = path.join(testDir, 'in-b.js')
const outputA = path.join(testDir, 'out-a.js')
const outputB = path.join(testDir, 'out-b.js')
// Build 1
await writeFileAsync(inputA, `console.log('a')`)
await writeFileAsync(inputB, `console.log('b')`)
const resultA1 = await toTest.build({ entryPoints: [inputA], outfile: outputA, format: 'esm', incremental: true })
const resultB1 = await toTest.build({ entryPoints: [inputB], outfile: outputB, format: 'esm', incremental: true })
assert.notStrictEqual(resultA1.rebuild, resultB1.rebuild)
assert.strictEqual(resultA1.outputFiles, void 0)
assert.strictEqual(resultB1.outputFiles, void 0)
assert.strictEqual(await readFileAsync(outputA, 'utf8'), `console.log("a");\n`)
assert.strictEqual(await readFileAsync(outputB, 'utf8'), `console.log("b");\n`)
// Build 2
await writeFileAsync(inputA, `console.log(1)`)
await writeFileAsync(inputB, `console.log(2)`)
const promiseA = resultA1.rebuild();
const promiseB = resultB1.rebuild();
const resultA2 = await promiseA;
const resultB2 = await promiseB;
assert.strictEqual(resultA2.rebuild, resultA1.rebuild)
assert.strictEqual(resultB2.rebuild, resultB1.rebuild)
assert.strictEqual(resultA2.outputFiles, void 0)
assert.strictEqual(resultB2.outputFiles, void 0)
assert.strictEqual(await readFileAsync(outputA, 'utf8'), `console.log(1);\n`)
assert.strictEqual(await readFileAsync(outputB, 'utf8'), `console.log(2);\n`)
// Further rebuilds should not be possible after a dispose
resultA1.rebuild.dispose()
try {
await resultA1.rebuild()
throw new Error('Expected an error to be thrown')
} catch (e) {
assert.strictEqual(e.message, 'Cannot rebuild')
}
// Build 3
await writeFileAsync(inputB, `console.log(3)`)
const resultB3 = await resultB1.rebuild()
assert.strictEqual(resultB3.rebuild, resultB1.rebuild)
assert.strictEqual(resultB3.outputFiles, void 0)
assert.strictEqual(await readFileAsync(outputB, 'utf8'), `console.log(3);\n`)
// Further rebuilds should not be possible after a dispose
resultB1.rebuild.dispose()
try {
await resultB1.rebuild()
throw new Error('Expected an error to be thrown')
} catch (e) {
assert.strictEqual(e.message, 'Cannot rebuild')
}
}
},
async rebuildParallel({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
// Build 1
await writeFileAsync(input, `console.log('abc')`)
const result1 = await toTest.build({ entryPoints: [input], outfile: output, format: 'esm', incremental: true })
assert.strictEqual(result1.outputFiles, void 0)
assert.strictEqual(await readFileAsync(output, 'utf8'), `console.log("abc");\n`)
// Build 2
await writeFileAsync(input, `console.log('xyz')`)
const promise2A = result1.rebuild();
const promise2B = result1.rebuild();
const result2A = await promise2A;
const result2B = await promise2B;
assert.strictEqual(result2A.rebuild, result1.rebuild)
assert.strictEqual(result2B.rebuild, result1.rebuild)
assert.strictEqual(result2A.outputFiles, void 0)
assert.strictEqual(result2B.outputFiles, void 0)
assert.strictEqual(await readFileAsync(output, 'utf8'), `console.log("xyz");\n`)
// Build 3
await writeFileAsync(input, `console.log(123)`)
const promise3A = result1.rebuild();
const promise3B = result1.rebuild();
const result3A = await promise3A;
const result3B = await promise3B;
assert.strictEqual(result3A.rebuild, result1.rebuild)
assert.strictEqual(result3B.rebuild, result1.rebuild)
assert.strictEqual(result3A.outputFiles, void 0)
assert.strictEqual(result3B.outputFiles, void 0)
assert.strictEqual(await readFileAsync(output, 'utf8'), `console.log(123);\n`)
// Further rebuilds should not be possible after a dispose
result1.rebuild.dispose()
try {
await result1.rebuild()
throw new Error('Expected an error to be thrown')
} catch (e) {
assert.strictEqual(e.message, 'Cannot rebuild')
}
}
},
async bundleAvoidTDZ({ service }) {
var { outputFiles } = await service.build({
stdin: {
contents: `
class Foo {
// The above line will be transformed into "var". However, the
// symbol "Foo" must still be defined before the class body ends.
static foo = new Foo
}
if (!(Foo.foo instanceof Foo))
throw 'fail'
`,
},
bundle: true,
write: false,
})
assert.strictEqual(outputFiles.length, 1)
new Function(outputFiles[0].text)()
},
async bundleTSAvoidTDZ({ service }) {
var { outputFiles } = await service.build({
stdin: {
contents: `
class Foo {
// The above line will be transformed into "var". However, the
// symbol "Foo" must still be defined before the class body ends.
static foo = new Foo
}
if (!(Foo.foo instanceof Foo))
throw 'fail'
`,
loader: 'ts',
},
bundle: true,
write: false,
})
assert.strictEqual(outputFiles.length, 1)
new Function(outputFiles[0].text)()
},
async bundleTSDecoratorAvoidTDZ({ service }) {
var { outputFiles } = await service.build({
stdin: {
contents: `
class Bar {}
var oldFoo
function swap(target) {
oldFoo = target
return Bar
}
@swap
class Foo {
bar() { return new Foo }
static foo = new Foo
}
if (!(oldFoo.foo instanceof oldFoo))
throw 'fail: foo'
if (!(oldFoo.foo.bar() instanceof Bar))
throw 'fail: bar'
`,
loader: 'ts',
},
bundle: true,
write: false,
})
assert.strictEqual(outputFiles.length, 1)
new Function(outputFiles[0].text)()
},
}
function fetch(host, port, path) {
return new Promise((resolve, reject) => {
http.get({ host, port, path }, res => {
const chunks = []
res.on('data', chunk => chunks.push(chunk))
res.on('end', () => {
const content = Buffer.concat(chunks)
if (res.statusCode < 200 || res.statusCode > 299)
reject(new Error(`${res.statusCode} when fetching ${path}: ${content}`))
else
resolve(content)
})
}).on('error', reject)
})
}
let watchTests = {
async watchEditSession({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
const srcDir = path.join(testDir, 'src')
const outfile = path.join(testDir, 'out.js')
const input = path.join(srcDir, 'in.js')
await mkdirAsync(srcDir, { recursive: true })
await writeFileAsync(input, `throw 1`)
let onRebuild = () => { }
const result = await toTest.build({
entryPoints: [input],
outfile,
format: 'esm',
logLevel: 'silent',
watch: {
onRebuild: (...args) => onRebuild(args),
},
})
const rebuildUntil = (mutator, condition) => {
let timeout
return new Promise((resolve, reject) => {
timeout = setTimeout(() => reject(new Error('Timeout after 30 seconds')), 30 * 1000)
onRebuild = args => {
try { if (condition(...args)) clearTimeout(timeout), resolve(args) }
catch (e) { clearTimeout(timeout), reject(e) }
}
mutator()
})
}
try {
assert.strictEqual(result.outputFiles, void 0)
assert.strictEqual(typeof result.stop, 'function')
assert.strictEqual(await readFileAsync(outfile, 'utf8'), 'throw 1;\n')
// First rebuild: edit
{
const [error2, result2] = await rebuildUntil(
() => writeFileAtomic(input, `throw 2`),
() => fs.readFileSync(outfile, 'utf8') === 'throw 2;\n',
)
assert.strictEqual(error2, null)
assert.strictEqual(result2.outputFiles, void 0)
assert.strictEqual(result2.stop, result.stop)
}
// Second rebuild: edit
{
const [error2, result2] = await rebuildUntil(
() => writeFileAtomic(input, `throw 3`),
() => fs.readFileSync(outfile, 'utf8') === 'throw 3;\n',
)
assert.strictEqual(error2, null)
assert.strictEqual(result2.outputFiles, void 0)
assert.strictEqual(result2.stop, result.stop)
}
// Third rebuild: syntax error
{
const [error2, result2] = await rebuildUntil(
() => writeFileAtomic(input, `throw 1 2`),
err => err,
)
assert.notStrictEqual(error2, null)
assert(error2.message.startsWith('Build failed with 1 error'))
assert.strictEqual(error2.errors.length, 1)
assert.strictEqual(error2.errors[0].text, 'Expected ";" but found "2"')
assert.strictEqual(result2, null)
assert.strictEqual(await readFileAsync(outfile, 'utf8'), 'throw 3;\n')
}
// Fourth rebuild: edit
{
const [error2, result2] = await rebuildUntil(
() => writeFileAtomic(input, `throw 4`),
() => fs.readFileSync(outfile, 'utf8') === 'throw 4;\n',
)
assert.strictEqual(error2, null)
assert.strictEqual(result2.outputFiles, void 0)
assert.strictEqual(result2.stop, result.stop)
}
// Fifth rebuild: delete
{
const [error2, result2] = await rebuildUntil(
() => fs.promises.unlink(input),
err => err,
)
assert.notStrictEqual(error2, null)
assert(error2.message.startsWith('Build failed with 1 error'))
assert.strictEqual(error2.errors.length, 1)
assert.strictEqual(result2, null)
assert.strictEqual(await readFileAsync(outfile, 'utf8'), 'throw 4;\n')
}
// Sixth rebuild: restore
{
const [error2, result2] = await rebuildUntil(
() => writeFileAtomic(input, `throw 5`),
() => fs.readFileSync(outfile, 'utf8') === 'throw 5;\n',
)
assert.strictEqual(error2, null)
assert.strictEqual(result2.outputFiles, void 0)
assert.strictEqual(result2.stop, result.stop)
assert.strictEqual(await readFileAsync(outfile, 'utf8'), 'throw 5;\n')
}
} finally {
result.stop()
}
}
},
async watchWriteFalse({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
const srcDir = path.join(testDir, 'src')
const outdir = path.join(testDir, 'out')
const input = path.join(srcDir, 'in.js')
const output = path.join(outdir, 'in.js')
await mkdirAsync(srcDir, { recursive: true })
await writeFileAsync(input, `throw 1`)
let onRebuild = () => { }
const result = await toTest.build({
entryPoints: [input],
outdir,
format: 'esm',
logLevel: 'silent',
write: false,
watch: {
onRebuild: (...args) => onRebuild(args),
},
})
const rebuildUntil = (mutator, condition) => {
let timeout
return new Promise((resolve, reject) => {
timeout = setTimeout(() => reject(new Error('Timeout after 30 seconds')), 30 * 1000)
onRebuild = args => {
try { if (condition(...args)) clearTimeout(timeout), resolve(args) }
catch (e) { clearTimeout(timeout), reject(e) }
}
mutator()
})
}
try {
assert.strictEqual(result.outputFiles.length, 1)
assert.strictEqual(result.outputFiles[0].text, 'throw 1;\n')
assert.strictEqual(typeof result.stop, 'function')
assert.strictEqual(fs.existsSync(output), false)
// First rebuild: edit
{
const [error2, result2] = await rebuildUntil(
() => writeFileAtomic(input, `throw 2`),
(err, res) => res.outputFiles[0].text === 'throw 2;\n',
)
assert.strictEqual(error2, null)
assert.strictEqual(result2.stop, result.stop)
assert.strictEqual(fs.existsSync(output), false)
}
// Second rebuild: edit
{
const [error2, result2] = await rebuildUntil(
() => writeFileAtomic(input, `throw 3`),
(err, res) => res.outputFiles[0].text === 'throw 3;\n',
)
assert.strictEqual(error2, null)
assert.strictEqual(result2.stop, result.stop)
assert.strictEqual(fs.existsSync(output), false)
}
} finally {
result.stop()
}
}
},
}
let serveTests = {
async serveBasic({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
const input = path.join(testDir, 'in.js')
await writeFileAsync(input, `console.log(123)`)
let onRequest;
let singleRequestPromise = new Promise(resolve => {
onRequest = resolve;
});
const result = await toTest.serve({ onRequest }, {
entryPoints: [input],
format: 'esm',
})
assert.strictEqual(result.host, '127.0.0.1');
assert.strictEqual(typeof result.port, 'number');
const buffer = await fetch(result.host, result.port, '/in.js')
assert.strictEqual(buffer.toString(), `console.log(123);\n`);
let singleRequest = await singleRequestPromise;
assert.strictEqual(singleRequest.method, 'GET');
assert.strictEqual(singleRequest.path, '/in.js');
assert.strictEqual(singleRequest.status, 200);
assert.strictEqual(typeof singleRequest.remoteAddress, 'string');
assert.strictEqual(typeof singleRequest.timeInMS, 'number');
result.stop();
await result.wait;
}
},
async serveOutfile({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
const input = path.join(testDir, 'in.js')
await writeFileAsync(input, `console.log(123)`)
let onRequest;
let singleRequestPromise = new Promise(resolve => {
onRequest = resolve;
});
const result = await toTest.serve({ onRequest }, {
entryPoints: [input],
format: 'esm',
outfile: 'out.js',
})
assert.strictEqual(result.host, '127.0.0.1');
assert.strictEqual(typeof result.port, 'number');
const buffer = await fetch(result.host, result.port, '/out.js')
assert.strictEqual(buffer.toString(), `console.log(123);\n`);
try {
await fetch(result.host, result.port, '/in.js')
throw new Error('Expected a 404 error for "/in.js"')
} catch (err) {
if (err.message !== '404 when fetching /in.js: 404 - Not Found')
throw err
}
let singleRequest = await singleRequestPromise;
assert.strictEqual(singleRequest.method, 'GET');
assert.strictEqual(singleRequest.path, '/out.js');
assert.strictEqual(singleRequest.status, 200);
assert.strictEqual(typeof singleRequest.remoteAddress, 'string');
assert.strictEqual(typeof singleRequest.timeInMS, 'number');
result.stop();
await result.wait;
}
},
async serveWithFallbackDir({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
const input = path.join(testDir, 'in.js')
const wwwDir = path.join(testDir, 'www')
const index = path.join(wwwDir, 'index.html')
await mkdirAsync(wwwDir, { recursive: true })
await writeFileAsync(input, `console.log(123)`)
await writeFileAsync(index, `<!doctype html>`)
let onRequest;
let nextRequestPromise;
(function generateNewPromise() {
nextRequestPromise = new Promise(resolve => {
onRequest = args => {
generateNewPromise();
resolve(args);
};
});
})();
const result = await toTest.serve({
onRequest: args => onRequest(args),
servedir: wwwDir,
}, {
entryPoints: [input],
format: 'esm',
})
assert.strictEqual(result.host, '127.0.0.1');
assert.strictEqual(typeof result.port, 'number');
let promise, buffer, req;
promise = nextRequestPromise;
buffer = await fetch(result.host, result.port, '/in.js')
assert.strictEqual(buffer.toString(), `console.log(123);\n`);
req = await promise;
assert.strictEqual(req.method, 'GET');
assert.strictEqual(req.path, '/in.js');
assert.strictEqual(req.status, 200);
assert.strictEqual(typeof req.remoteAddress, 'string');
assert.strictEqual(typeof req.timeInMS, 'number');
promise = nextRequestPromise;
buffer = await fetch(result.host, result.port, '/')
assert.strictEqual(buffer.toString(), `<!doctype html>`);
req = await promise;
assert.strictEqual(req.method, 'GET');
assert.strictEqual(req.path, '/');
assert.strictEqual(req.status, 200);
assert.strictEqual(typeof req.remoteAddress, 'string');
assert.strictEqual(typeof req.timeInMS, 'number');
result.stop();
await result.wait;
}
},
async serveWithFallbackDirAndSiblingOutputDir({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
try {
const result = await toTest.serve({
servedir: 'www',
}, {
entryPoints: [path.join(testDir, 'in.js')],
outdir: 'out',
})
result.stop()
throw new Error('Expected an error to be thrown')
} catch (e) {
assert.strictEqual(e + '', `Error: Output directory "out" must be contained in serve directory "www"`)
}
}
},
async serveWithFallbackDirAndParentOutputDir({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
try {
const result = await toTest.serve({
servedir: path.join(testDir, 'www'),
}, {
entryPoints: [path.join(testDir, 'in.js')],
outdir: testDir,
absWorkingDir: testDir,
})
result.stop()
throw new Error('Expected an error to be thrown')
} catch (e) {
assert.strictEqual(e + '', `Error: Output directory "." must be contained in serve directory "www"`)
}
}
},
async serveWithFallbackDirAndOutputDir({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
const input = path.join(testDir, 'in.js')
const outputDir = path.join(testDir, 'www/out')
const wwwDir = path.join(testDir, 'www')
const index = path.join(wwwDir, 'index.html')
await mkdirAsync(wwwDir, { recursive: true })
await writeFileAsync(input, `console.log(123)`)
await writeFileAsync(index, `<!doctype html>`)
let onRequest;
let nextRequestPromise;
(function generateNewPromise() {
nextRequestPromise = new Promise(resolve => {
onRequest = args => {
generateNewPromise();
resolve(args);
};
});
})();
const result = await toTest.serve({
onRequest: args => onRequest(args),
servedir: wwwDir,
}, {
entryPoints: [input],
format: 'esm',
outdir: outputDir,
})
assert.strictEqual(result.host, '127.0.0.1');
assert.strictEqual(typeof result.port, 'number');
let promise, buffer, req;
promise = nextRequestPromise;
buffer = await fetch(result.host, result.port, '/out/in.js')
assert.strictEqual(buffer.toString(), `console.log(123);\n`);
req = await promise;
assert.strictEqual(req.method, 'GET');
assert.strictEqual(req.path, '/out/in.js');
assert.strictEqual(req.status, 200);
assert.strictEqual(typeof req.remoteAddress, 'string');
assert.strictEqual(typeof req.timeInMS, 'number');
promise = nextRequestPromise;
buffer = await fetch(result.host, result.port, '/')
assert.strictEqual(buffer.toString(), `<!doctype html>`);
req = await promise;
assert.strictEqual(req.method, 'GET');
assert.strictEqual(req.path, '/');
assert.strictEqual(req.status, 200);
assert.strictEqual(typeof req.remoteAddress, 'string');
assert.strictEqual(typeof req.timeInMS, 'number');
result.stop();
await result.wait;
}
},
async serveWithFallbackDirNoEntryPoints({ esbuild, service, testDir }) {
for (const toTest of [esbuild, service]) {
const index = path.join(testDir, 'index.html')
await writeFileAsync(index, `<!doctype html>`)
let onRequest;
let nextRequestPromise;
(function generateNewPromise() {
nextRequestPromise = new Promise(resolve => {
onRequest = args => {
generateNewPromise();
resolve(args);
};
});
})();
const result = await toTest.serve({
onRequest: args => onRequest(args),
servedir: testDir,
}, {
})
assert.strictEqual(result.host, '127.0.0.1');
assert.strictEqual(typeof result.port, 'number');
let promise, buffer, req;
promise = nextRequestPromise;
buffer = await fetch(result.host, result.port, '/')
assert.strictEqual(buffer.toString(), `<!doctype html>`);
req = await promise;
assert.strictEqual(req.method, 'GET');
assert.strictEqual(req.path, '/');
assert.strictEqual(req.status, 200);
assert.strictEqual(typeof req.remoteAddress, 'string');
assert.strictEqual(typeof req.timeInMS, 'number');
// Check that removing the file removes it from the directory listing (i.e. the
// "fs.FS" object in Go does not cache the result of calling "ReadDirectory")
await fs.promises.unlink(index)
promise = nextRequestPromise;
buffer = await fetch(result.host, result.port, '/')
assert.strictEqual(buffer.toString(), `<!doctype html><meta charset="utf8"><title>Directory: /</title><h1>Directory: /</h1><ul></ul>`);
req = await promise;
assert.strictEqual(req.method, 'GET');
assert.strictEqual(req.path, '/');
assert.strictEqual(req.status, 200);
assert.strictEqual(typeof req.remoteAddress, 'string');
assert.strictEqual(typeof req.timeInMS, 'number');
result.stop();
await result.wait;
}
},
}
async function futureSyntax(service, js, targetBelow, targetAbove) {
failure: {
try { await service.transform(js, { target: targetBelow }) }
catch { break failure }
throw new Error(`Expected failure for ${targetBelow}: ${js}`)
}
try { await service.transform(js, { target: targetAbove }) }
catch (e) { throw new Error(`Expected success for ${targetAbove}: ${js}\n${e}`) }
}
let transformTests = {
async transformWithNonString({ esbuild, service }) {
for (let toTest of [esbuild, service]) {
try {
// Do not "await" here. The error should be thrown outside of the promise.
toTest.transform({ toString() { throw new Error('toString() error') } })
throw new Error('Expected an error to be thrown');
} catch (e) {
assert.strictEqual(e.message, 'toString() error')
}
var { code } = await toTest.transform(Buffer.from(`1+2`))
assert.strictEqual(code, `1 + 2;\n`)
}
},
async version({ esbuild }) {
const version = fs.readFileSync(path.join(repoDir, 'version.txt'), 'utf8').trim()
assert.strictEqual(esbuild.version, version);
},
async ignoreUndefinedOptions({ service }) {
// This should not throw
await service.transform(``, { jsxFactory: void 0 })
},
async throwOnBadOptions({ service }) {
// This should throw
try {
await service.transform(``, { jsxFactory: ['React', 'createElement'] })
throw new Error('Expected transform failure');
} catch (e) {
if (!e.errors || !e.errors[0] || e.errors[0].text !== '"jsxFactory" must be a string') {
throw e;
}
}
},
async avoidTDZ({ service }) {
var { code } = await service.transform(`
class Foo {
// The above line will be transformed into "var". However, the
// symbol "Foo" must still be defined before the class body ends.
static foo = new Foo
}
if (!(Foo.foo instanceof Foo))
throw 'fail'
`)
new Function(code)()
},
async tsAvoidTDZ({ service }) {
var { code } = await service.transform(`
class Foo {
// The above line will be transformed into "var". However, the
// symbol "Foo" must still be defined before the class body ends.
static foo = new Foo
}
if (!(Foo.foo instanceof Foo))
throw 'fail'
`, {
loader: 'ts',
})
new Function(code)()
},
async tsDecoratorAvoidTDZ({ service }) {
var { code } = await service.transform(`
class Bar {}
var oldFoo
function swap(target) {
oldFoo = target
return Bar
}
@swap
class Foo {
bar() { return new Foo }
static foo = new Foo
}
if (!(oldFoo.foo instanceof oldFoo))
throw 'fail: foo'
if (!(oldFoo.foo.bar() instanceof Bar))
throw 'fail: bar'
`, {
loader: 'ts',
})
new Function(code)()
},
async jsBannerTransform({ service }) {
var { code } = await service.transform(`
if (!bannerDefined) throw 'fail'
`, {
banner: 'const bannerDefined = true',
})
new Function(code)()
},
async jsFooterTransform({ service }) {
var { code } = await service.transform(`
footer()
`, {
footer: 'function footer() {}',
})
new Function(code)()
new Function(code)()
},
async jsBannerFooterTransform({ service }) {
var { code } = await service.transform(`
return { banner: bannerDefined, footer };
`, {
banner: 'const bannerDefined = true',
footer: 'function footer() {}',
})
const result = new Function(code)()
if (!result.banner) throw 'fail'
result.footer()
},
async cssBannerFooterTransform({ service }) {
var { code } = await service.transform(`
div { color: red }
`, {
loader: 'css',
banner: '/* banner */',
footer: '/* footer */',
})
assert.strictEqual(code, `div {\n color: red;\n}\n`)
},
async transformDirectEval({ service }) {
var { code } = await service.transform(`
export let abc = 123
eval('console.log(abc)')
`, {
minify: true,
})
assert.strictEqual(code, `export let abc=123;eval("console.log(abc)");\n`)
},
async tsconfigRawRemoveUnusedImportsDefault({ service }) {
const { code } = await service.transform(`import {T} from 'path'`, {
tsconfigRaw: {
compilerOptions: {},
},
loader: 'ts',
})
assert.strictEqual(code, ``)
},
async tsconfigRawRemoveUnusedImports({ service }) {
const { code } = await service.transform(`import {T} from 'path'`, {
tsconfigRaw: {
compilerOptions: {
importsNotUsedAsValues: 'remove',
},
},
loader: 'ts',
})
assert.strictEqual(code, ``)
},
async tsconfigRawPreserveUnusedImports({ service }) {
const { code } = await service.transform(`import {T} from 'path'`, {
tsconfigRaw: {
compilerOptions: {
importsNotUsedAsValues: 'preserve',
},
},
loader: 'ts',
})
assert.strictEqual(code, `import {T} from "path";\n`)
},
async tsconfigRawPreserveUnusedImportsMinifyIdentifiers({ service }) {
const { code } = await service.transform(`import {T} from 'path'`, {
tsconfigRaw: {
compilerOptions: {
importsNotUsedAsValues: 'preserve',
},
},
loader: 'ts',
minifyIdentifiers: true,
})
assert.strictEqual(code, `import "path";\n`)
},
async tsconfigRawPreserveUnusedImportsJS({ service }) {
const { code } = await service.transform(`import {T} from 'path'`, {
tsconfigRaw: {
compilerOptions: {
importsNotUsedAsValues: 'preserve',
},
},
loader: 'js',
})
assert.strictEqual(code, `import {T} from "path";\n`)
},
async tsconfigRawCommentsInJSON({ service }) {
// Can use a string, which allows weird TypeScript pseudo-JSON with comments and trailing commas
const { code: code5 } = await service.transform(`import {T} from 'path'`, {
tsconfigRaw: `{
"compilerOptions": {
"importsNotUsedAsValues": "preserve", // there is a trailing comment here
},
}`,
loader: 'ts',
})
assert.strictEqual(code5, `import {T} from "path";\n`)
},
async tsconfigRawImportsNotUsedAsValues({ service }) {
const { code: code1 } = await service.transform(`class Foo { foo }`, {
tsconfigRaw: {
compilerOptions: {
useDefineForClassFields: false,
},
},
loader: 'ts',
})
assert.strictEqual(code1, `class Foo {\n}\n`)
const { code: code2 } = await service.transform(`class Foo { foo }`, {
tsconfigRaw: {
compilerOptions: {
useDefineForClassFields: true,
},
},
loader: 'ts',
})
assert.strictEqual(code2, `class Foo {\n foo;\n}\n`)
},
async tsconfigRawJSX({ service }) {
const { code: code1 } = await service.transform(`<><div/></>`, {
tsconfigRaw: {
compilerOptions: {
},
},
loader: 'jsx',
})
assert.strictEqual(code1, `/* @__PURE__ */ React.createElement(React.Fragment, null, /* @__PURE__ */ React.createElement("div", null));\n`)
const { code: code2 } = await service.transform(`<><div/></>`, {
tsconfigRaw: {
compilerOptions: {
jsxFactory: 'factory',
jsxFragmentFactory: 'fragment',
},
},
loader: 'jsx',
})
assert.strictEqual(code2, `/* @__PURE__ */ factory(fragment, null, /* @__PURE__ */ factory("div", null));\n`)
},
async treeShakingDefault({ service }) {
const { code } = await service.transform(`/* @__PURE__ */ fn(); <div/>`, {
loader: 'jsx',
minifySyntax: true,
})
assert.strictEqual(code, ``)
},
async treeShakingTrue({ service }) {
const { code } = await service.transform(`/* @__PURE__ */ fn(); <div/>`, {
loader: 'jsx',
minifySyntax: true,
treeShaking: true,
})
assert.strictEqual(code, ``)
},
async treeShakingIgnoreAnnotations({ service }) {
const { code } = await service.transform(`/* @__PURE__ */ fn(); <div/>`, {
loader: 'jsx',
minifySyntax: true,
treeShaking: 'ignore-annotations',
})
assert.strictEqual(code, `fn(), React.createElement("div", null);\n`)
},
async jsCharsetDefault({ service }) {
const { code } = await service.transform(`let π = 'π'`, {})
assert.strictEqual(code, `let \\u03C0 = "\\u03C0";\n`)
},
async jsCharsetASCII({ service }) {
const { code } = await service.transform(`let π = 'π'`, { charset: 'ascii' })
assert.strictEqual(code, `let \\u03C0 = "\\u03C0";\n`)
},
async jsCharsetUTF8({ service }) {
const { code } = await service.transform(`let π = 'π'`, { charset: 'utf8' })
assert.strictEqual(code, `let π = "π";\n`)
},
async cssCharsetDefault({ service }) {
const { code } = await service.transform(`.π:after { content: 'π' }`, { loader: 'css' })
assert.strictEqual(code, `.\\3c0:after {\n content: "\\3c0";\n}\n`)
},
async cssCharsetASCII({ service }) {
const { code } = await service.transform(`.π:after { content: 'π' }`, { loader: 'css', charset: 'ascii' })
assert.strictEqual(code, `.\\3c0:after {\n content: "\\3c0";\n}\n`)
},
async cssCharsetUTF8({ service }) {
const { code } = await service.transform(`.π:after { content: 'π' }`, { loader: 'css', charset: 'utf8' })
assert.strictEqual(code, `.π:after {\n content: "π";\n}\n`)
},
async cjs_require({ service }) {
const { code } = await service.transform(`const {foo} = require('path')`, {})
assert.strictEqual(code, `const {foo} = require("path");\n`)
},
async cjs_exports({ service }) {
const { code } = await service.transform(`exports.foo = 123`, {})
assert.strictEqual(code, `exports.foo = 123;\n`)
},
async es6_import({ service }) {
const { code } = await service.transform(`import {foo} from 'path'`, {})
assert.strictEqual(code, `import {foo} from "path";\n`)
},
async es6_export({ service }) {
const { code } = await service.transform(`export const foo = 123`, {})
assert.strictEqual(code, `export const foo = 123;\n`)
},
async es6_import_to_iife({ service }) {
const { code } = await service.transform(`import {exists} from "fs"; if (!exists) throw 'fail'`, { format: 'iife' })
new Function('require', code)(require)
},
async es6_import_star_to_iife({ service }) {
const { code } = await service.transform(`import * as fs from "fs"; if (!fs.exists) throw 'fail'`, { format: 'iife' })
new Function('require', code)(require)
},
async es6_export_to_iife({ service }) {
const { code } = await service.transform(`export {exists} from "fs"`, { format: 'iife', globalName: 'out' })
const out = new Function('require', code + ';return out')(require)
if (out.exists !== fs.exists) throw 'fail'
},
async es6_export_star_to_iife({ service }) {
const { code } = await service.transform(`export * from "fs"`, { format: 'iife', globalName: 'out' })
const out = new Function('require', code + ';return out')(require)
if (out.exists !== fs.exists) throw 'fail'
},
async es6_export_star_as_to_iife({ service }) {
const { code } = await service.transform(`export * as fs from "fs"`, { format: 'iife', globalName: 'out' })
const out = new Function('require', code + ';return out')(require)
if (out.fs.exists !== fs.exists) throw 'fail'
},
async es6_import_to_cjs({ service }) {
const { code } = await service.transform(`import {exists} from "fs"; if (!exists) throw 'fail'`, { format: 'cjs' })
new Function('require', code)(require)
},
async es6_import_star_to_cjs({ service }) {
const { code } = await service.transform(`import * as fs from "fs"; if (!fs.exists) throw 'fail'`, { format: 'cjs' })
new Function('require', code)(require)
},
async es6_export_to_cjs({ service }) {
const { code } = await service.transform(`export {exists} from "fs"`, { format: 'cjs' })
const exports = {}
new Function('require', 'exports', code)(require, exports)
if (exports.exists !== fs.exists) throw 'fail'
},
async es6_export_star_to_cjs({ service }) {
const { code } = await service.transform(`export * from "fs"`, { format: 'cjs' })
const exports = {}
new Function('require', 'exports', code)(require, exports)
if (exports.exists !== fs.exists) throw 'fail'
},
async es6_export_star_as_to_cjs({ service }) {
const { code } = await service.transform(`export * as fs from "fs"`, { format: 'cjs' })
const exports = {}
new Function('require', 'exports', code)(require, exports)
if (exports.fs.exists !== fs.exists) throw 'fail'
},
async es6_import_to_esm({ service }) {
const { code } = await service.transform(`import {exists} from "fs"; if (!exists) throw 'fail'`, { format: 'esm' })
assert.strictEqual(code, `import {exists} from "fs";\nif (!exists)\n throw "fail";\n`)
},
async es6_import_star_to_esm({ service }) {
const { code } = await service.transform(`import * as fs from "fs"; if (!fs.exists) throw 'fail'`, { format: 'esm' })
assert.strictEqual(code, `import * as fs from "fs";\nif (!fs.exists)\n throw "fail";\n`)
},
async es6_export_to_esm({ service }) {
const { code } = await service.transform(`export {exists} from "fs"`, { format: 'esm' })
assert.strictEqual(code, `import {exists} from "fs";\nexport {\n exists\n};\n`)
},
async es6_export_star_to_esm({ service }) {
const { code } = await service.transform(`export * from "fs"`, { format: 'esm' })
assert.strictEqual(code, `export * from "fs";\n`)
},
async es6_export_star_as_to_esm({ service }) {
const { code } = await service.transform(`export * as fs from "fs"`, { format: 'esm' })
assert.strictEqual(code, `import * as fs from "fs";\nexport {\n fs\n};\n`)
},
async iifeGlobalName({ service }) {
const { code } = await service.transform(`export default 123`, { format: 'iife', globalName: 'testName' })
const globals = {}
vm.createContext(globals)
vm.runInContext(code, globals)
assert.strictEqual(globals.testName.default, 123)
},
async iifeGlobalNameCompound({ service }) {
const { code } = await service.transform(`export default 123`, { format: 'iife', globalName: 'test.name' })
const globals = {}
vm.createContext(globals)
vm.runInContext(code, globals)
assert.strictEqual(globals.test.name.default, 123)
},
async iifeGlobalNameString({ service }) {
const { code } = await service.transform(`export default 123`, { format: 'iife', globalName: 'test["some text"]' })
const globals = {}
vm.createContext(globals)
vm.runInContext(code, globals)
assert.strictEqual(globals.test['some text'].default, 123)
},
async iifeGlobalNameUnicodeEscape({ service }) {
const { code } = await service.transform(`export default 123`, { format: 'iife', globalName: 'π["π 𐀀"].𐀀["𐀀 π"]' })
const globals = {}
vm.createContext(globals)
vm.runInContext(code, globals)
assert.strictEqual(globals.π["π 𐀀"].𐀀["𐀀 π"].default, 123)
assert.strictEqual(code.slice(0, code.indexOf('(() => {\n')), `var \\u03C0 = \\u03C0 || {};
\\u03C0["\\u03C0 \\uD800\\uDC00"] = \\u03C0["\\u03C0 \\uD800\\uDC00"] || {};
\\u03C0["\\u03C0 \\uD800\\uDC00"].\\u{10000} = \\u03C0["\\u03C0 \\uD800\\uDC00"].\\u{10000} || {};
\\u03C0["\\u03C0 \\uD800\\uDC00"].\\u{10000}["\\uD800\\uDC00 \\u03C0"] = `)
},
async iifeGlobalNameUnicodeNoEscape({ service }) {
const { code } = await service.transform(`export default 123`, { format: 'iife', globalName: 'π["π 𐀀"].𐀀["𐀀 π"]', charset: 'utf8' })
const globals = {}
vm.createContext(globals)
vm.runInContext(code, globals)
assert.strictEqual(globals.π["π 𐀀"].𐀀["𐀀 π"].default, 123)
assert.strictEqual(code.slice(0, code.indexOf('(() => {\n')),
`var π = π || {};
π["π 𐀀"] = π["π 𐀀"] || {};
π["π 𐀀"].𐀀 = π["π 𐀀"].𐀀 || {};
π["π 𐀀"].𐀀["𐀀 π"] = `)
},
async jsx({ service }) {
const { code } = await service.transform(`console.log(<div/>)`, { loader: 'jsx' })
assert.strictEqual(code, `console.log(/* @__PURE__ */ React.createElement("div", null));\n`)
},
async ts({ service }) {
const { code } = await service.transform(`enum Foo { FOO }`, { loader: 'ts' })
assert.strictEqual(code, `var Foo;\n(function(Foo2) {\n Foo2[Foo2["FOO"] = 0] = "FOO";\n})(Foo || (Foo = {}));\n`)
},
async tsx({ service }) {
const { code } = await service.transform(`console.log(<Foo<T>/>)`, { loader: 'tsx' })
assert.strictEqual(code, `console.log(/* @__PURE__ */ React.createElement(Foo, null));\n`)
},
async minify({ service }) {
const { code } = await service.transform(`console.log("a" + "b" + c)`, { minify: true })
assert.strictEqual(code, `console.log("ab"+c);\n`)
},
async define({ service }) {
const define = { 'process.env.NODE_ENV': '"production"' }
const { code } = await service.transform(`console.log(process.env.NODE_ENV)`, { define })
assert.strictEqual(code, `console.log("production");\n`)
},
async defineArray({ service }) {
const define = { 'process.env.NODE_ENV': '[1,2,3]', 'something.else': '[2,3,4]' }
const { code } = await service.transform(`console.log(process.env.NODE_ENV)`, { define })
assert.strictEqual(code, `var define_process_env_NODE_ENV_default = [1, 2, 3];\nconsole.log(define_process_env_NODE_ENV_default);\n`)
},
async defineWarning({ service }) {
const define = { 'process.env.NODE_ENV': 'production' }
const { code, warnings } = await service.transform(`console.log(process.env.NODE_ENV)`, { define })
assert.strictEqual(code, `console.log(production);\n`)
assert.strictEqual(warnings.length, 1)
assert.strictEqual(warnings[0].text,
`"process.env.NODE_ENV" is defined as an identifier instead of a string (surround "production" with double quotes to get a string)`)
},
async json({ service }) {
const { code } = await service.transform(`{ "x": "y" }`, { loader: 'json' })
assert.strictEqual(code, `module.exports = {x: "y"};\n`)
},
async jsonMinified({ service }) {
const { code } = await service.transform(`{ "x": "y" }`, { loader: 'json', minify: true })
const module = {}
new Function('module', code)(module)
assert.deepStrictEqual(module.exports, { x: 'y' })
},
async jsonESM({ service }) {
const { code } = await service.transform(`{ "x": "y" }`, { loader: 'json', format: 'esm' })
assert.strictEqual(code, `var x = "y";\nvar stdin_default = {x};\nexport {\n stdin_default as default,\n x\n};\n`)
},
async text({ service }) {
const { code } = await service.transform(`This is some text`, { loader: 'text' })
assert.strictEqual(code, `module.exports = "This is some text";\n`)
},
async textESM({ service }) {
const { code } = await service.transform(`This is some text`, { loader: 'text', format: 'esm' })
assert.strictEqual(code, `var stdin_default = "This is some text";\nexport {\n stdin_default as default\n};\n`)
},
async base64({ service }) {
const { code } = await service.transform(`\x00\x01\x02`, { loader: 'base64' })
assert.strictEqual(code, `module.exports = "AAEC";\n`)
},
async dataurl({ service }) {
const { code } = await service.transform(`\x00\x01\x02`, { loader: 'dataurl' })
assert.strictEqual(code, `module.exports = "data:application/octet-stream;base64,AAEC";\n`)
},
async sourceMapWithName({ service }) {
const { code, map } = await service.transform(`let x`, { sourcemap: true, sourcefile: 'afile.js' })
assert.strictEqual(code, `let x;\n`)
await assertSourceMap(map, 'afile.js')
},
async sourceMapExternalWithName({ service }) {
const { code, map } = await service.transform(`let x`, { sourcemap: 'external', sourcefile: 'afile.js' })
assert.strictEqual(code, `let x;\n`)
await assertSourceMap(map, 'afile.js')
},
async sourceMapInlineWithName({ service }) {
const { code, map } = await service.transform(`let x`, { sourcemap: 'inline', sourcefile: 'afile.js' })
assert(code.startsWith(`let x;\n//# sourceMappingURL=`))
assert.strictEqual(map, '')
const base64 = code.slice(code.indexOf('base64,') + 'base64,'.length)
await assertSourceMap(Buffer.from(base64.trim(), 'base64').toString(), 'afile.js')
},
async sourceMapBothWithName({ service }) {
const { code, map } = await service.transform(`let x`, { sourcemap: 'both', sourcefile: 'afile.js' })
assert(code.startsWith(`let x;\n//# sourceMappingURL=`))
await assertSourceMap(map, 'afile.js')
const base64 = code.slice(code.indexOf('base64,') + 'base64,'.length)
await assertSourceMap(Buffer.from(base64.trim(), 'base64').toString(), 'afile.js')
},
async numericLiteralPrinting({ service }) {
async function checkLiteral(text) {
const { code } = await service.transform(`return ${text}`, { minify: true })
assert.strictEqual(+text, new Function(code)())
}
const promises = []
for (let i = 0; i < 10; i++) {
for (let j = 0; j < 10; j++) {
promises.push(checkLiteral(`0.${'0'.repeat(i)}${'123456789'.slice(0, j)}`))
promises.push(checkLiteral(`1${'0'.repeat(i)}.${'123456789'.slice(0, j)}`))
promises.push(checkLiteral(`1${'123456789'.slice(0, j)}${'0'.repeat(i)}`))
}
}
await Promise.all(promises)
},
async tryCatchScopeMerge({ service }) {
const code = `
var x = 1
if (x !== 1) throw 'fail'
try {
throw 2
} catch (x) {
if (x !== 2) throw 'fail'
{
if (x !== 2) throw 'fail'
var x = 3
if (x !== 3) throw 'fail'
}
if (x !== 3) throw 'fail'
}
if (x !== 1) throw 'fail'
`;
new Function(code)(); // Verify that the code itself is correct
new Function((await service.transform(code)).code)();
},
async nestedFunctionHoist({ service }) {
const code = `
if (x !== void 0) throw 'fail'
{
if (x !== void 0) throw 'fail'
{
x()
function x() {}
x()
}
x()
}
x()
`;
new Function(code)(); // Verify that the code itself is correct
new Function((await service.transform(code)).code)();
},
async nestedFunctionHoistBefore({ service }) {
const code = `
var x = 1
if (x !== 1) throw 'fail'
{
if (x !== 1) throw 'fail'
{
x()
function x() {}
x()
}
x()
}
x()
`;
new Function(code)(); // Verify that the code itself is correct
new Function((await service.transform(code)).code)();
},
async nestedFunctionHoistAfter({ service }) {
const code = `
if (x !== void 0) throw 'fail'
{
if (x !== void 0) throw 'fail'
{
x()
function x() {}
x()
}
x()
}
x()
var x = 1
`;
new Function(code)(); // Verify that the code itself is correct
new Function((await service.transform(code)).code)();
},
async nestedFunctionShadowBefore({ service }) {
const code = `
let x = 1
if (x !== 1) throw 'fail'
{
if (x !== 1) throw 'fail'
{
x()
function x() {}
x()
}
if (x !== 1) throw 'fail'
}
if (x !== 1) throw 'fail'
`;
new Function(code)(); // Verify that the code itself is correct
new Function((await service.transform(code)).code)();
},
async nestedFunctionShadowAfter({ service }) {
const code = `
try { x; throw 'fail' } catch (e) { if (!(e instanceof ReferenceError)) throw e }
{
try { x; throw 'fail' } catch (e) { if (!(e instanceof ReferenceError)) throw e }
{
x()
function x() {}
x()
}
try { x; throw 'fail' } catch (e) { if (!(e instanceof ReferenceError)) throw e }
}
try { x; throw 'fail' } catch (e) { if (!(e instanceof ReferenceError)) throw e }
let x = 1
`;
new Function(code)(); // Verify that the code itself is correct
new Function((await service.transform(code)).code)();
},
async sourceMapControlCharacterEscapes({ service }) {
let chars = ''
for (let i = 0; i < 32; i++) chars += String.fromCharCode(i);
const input = `return \`${chars}\``;
const { code, map } = await service.transform(input, { sourcemap: true, sourcefile: 'afile.code' })
const fn = new Function(code)
assert.strictEqual(fn(), chars.replace('\r', '\n'))
const json = JSON.parse(map)
assert.strictEqual(json.version, 3)
assert.strictEqual(json.sourcesContent.length, 1)
assert.strictEqual(json.sourcesContent[0], input)
},
async tsDecorators({ service }) {
const { code } = await service.transform(`
let observed = [];
let on = key => (...args) => {
observed.push({ key, args });
};
@on('class')
class Foo {
@on('field') field;
@on('method') method() { }
@on('staticField') static staticField;
@on('staticMethod') static staticMethod() { }
fn(@on('param') x) { }
static staticFn(@on('staticParam') x) { }
}
// This is what the TypeScript compiler itself generates
let expected = [
{ key: 'field', args: [Foo.prototype, 'field', undefined] },
{ key: 'method', args: [Foo.prototype, 'method', { value: Foo.prototype.method, writable: true, enumerable: false, configurable: true }] },
{ key: 'param', args: [Foo.prototype, 'fn', 0] },
{ key: 'staticField', args: [Foo, 'staticField', undefined] },
{ key: 'staticMethod', args: [Foo, 'staticMethod', { value: Foo.staticMethod, writable: true, enumerable: false, configurable: true }] },
{ key: 'staticParam', args: [Foo, 'staticFn', 0] },
{ key: 'class', args: [Foo] }
];
return {observed, expected};
`, { loader: 'ts' });
const { observed, expected } = new Function(code)();
assert.deepStrictEqual(observed, expected);
},
async pureCallPrint({ service }) {
const { code: code1 } = await service.transform(`print(123, foo)`, { minifySyntax: true, pure: [] })
assert.strictEqual(code1, `print(123, foo);\n`)
const { code: code2 } = await service.transform(`print(123, foo)`, { minifySyntax: true, pure: ['print'] })
assert.strictEqual(code2, `foo;\n`)
},
async pureCallConsoleLog({ service }) {
const { code: code1 } = await service.transform(`console.log(123, foo)`, { minifySyntax: true, pure: [] })
assert.strictEqual(code1, `console.log(123, foo);\n`)
const { code: code2 } = await service.transform(`console.log(123, foo)`, { minifySyntax: true, pure: ['console.log'] })
assert.strictEqual(code2, `foo;\n`)
},
async multipleEngineTargets({ service }) {
const check = async (target, expected) =>
assert.strictEqual((await service.transform(`foo(a ?? b)`, { target })).code, expected)
await Promise.all([
check('es2020', `foo(a ?? b);\n`),
check('es2019', `foo(a != null ? a : b);\n`),
check('chrome80', `foo(a ?? b);\n`),
check('chrome79', `foo(a != null ? a : b);\n`),
check(['es2020', 'chrome80'], `foo(a ?? b);\n`),
check(['es2020', 'chrome79'], `foo(a != null ? a : b);\n`),
check(['es2019', 'chrome80'], `foo(a != null ? a : b);\n`),
])
},
// Future syntax
forAwait: ({ service }) => futureSyntax(service, 'async function foo() { for await (let x of y) {} }', 'es2017', 'es2018'),
bigInt: ({ service }) => futureSyntax(service, '123n', 'es2019', 'es2020'),
bigIntKey: ({ service }) => futureSyntax(service, '({123n: 0})', 'es2019', 'es2020'),
bigIntPattern: ({ service }) => futureSyntax(service, 'let {123n: x} = y', 'es2019', 'es2020'),
nonIdArrayRest: ({ service }) => futureSyntax(service, 'let [...[x]] = y', 'es2015', 'es2016'),
topLevelAwait: ({ service }) => futureSyntax(service, 'await foo', 'es2020', 'esnext'),
topLevelForAwait: ({ service }) => futureSyntax(service, 'for await (foo of bar) ;', 'es2020', 'esnext'),
// Future syntax: async generator functions
asyncGenFnStmt: ({ service }) => futureSyntax(service, 'async function* foo() {}', 'es2017', 'es2018'),
asyncGenFnExpr: ({ service }) => futureSyntax(service, '(async function*() {})', 'es2017', 'es2018'),
asyncGenObjFn: ({ service }) => futureSyntax(service, '({ async* foo() {} })', 'es2017', 'es2018'),
asyncGenClassStmtFn: ({ service }) => futureSyntax(service, 'class Foo { async* foo() {} }', 'es2017', 'es2018'),
asyncGenClassExprFn: ({ service }) => futureSyntax(service, '(class { async* foo() {} })', 'es2017', 'es2018'),
}
let functionScopeCases = [
'function x() {} { var x }',
'function* x() {} { var x }',
'async function x() {} { var x }',
'async function* x() {} { var x }',
'{ var x } function x() {}',
'{ var x } function* x() {}',
'{ var x } async function x() {}',
'{ var x } async function* x() {}',
'{ function x() {} { var x } }',
'{ function* x() {} { var x } }',
'{ async function x() {} { var x } }',
'{ async function* x() {} { var x } }',
'{ { var x } function x() {} }',
'{ { var x } function* x() {} }',
'{ { var x } async function x() {} }',
'{ { var x } async function* x() {} }',
'function f() { function x() {} { var x } }',
'function f() { function* x() {} { var x } }',
'function f() { async function x() {} { var x } }',
'function f() { async function* x() {} { var x } }',
'function f() { { var x } function x() {} }',
'function f() { { var x } function* x() {} }',
'function f() { { var x } async function x() {} }',
'function f() { { var x } async function* x() {} }',
'function f() { { function x() {} { var x } }}',
'function f() { { function* x() {} { var x } }}',
'function f() { { async function x() {} { var x } }}',
'function f() { { async function* x() {} { var x } }}',
'function f() { { { var x } function x() {} }}',
'function f() { { { var x } function* x() {} }}',
'function f() { { { var x } async function x() {} }}',
'function f() { { { var x } async function* x() {} }}',
];
for (let kind of ['var', 'let', 'const']) {
for (let code of functionScopeCases) {
code = code.replace('var', kind)
transformTests['functionScope: ' + code] = async ({ service }) => {
let esbuildError
let nodeError
try { await service.transform(code) } catch (e) { esbuildError = e }
try { new Function(code)() } catch (e) { nodeError = e }
if (!esbuildError !== !nodeError) {
throw new Error(`
esbuild: ${esbuildError}
node: ${nodeError}
`)
}
}
}
}
let syncTests = {
async buildSync({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, 'export default 123')
esbuild.buildSync({ entryPoints: [input], bundle: true, outfile: output, format: 'cjs' })
const result = require(output)
assert.strictEqual(result.default, 123)
assert.strictEqual(result.__esModule, true)
},
async buildSyncOutputFiles({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, 'module.exports = 123')
let prettyPath = path.relative(process.cwd(), input).replace(/\\/g, '/')
let text = `// ${prettyPath}\nmodule.exports = 123;\n`
let result = esbuild.buildSync({ entryPoints: [input], bundle: true, outfile: output, format: 'cjs', write: false })
assert.strictEqual(result.outputFiles.length, 1)
assert.strictEqual(result.outputFiles[0].path, output)
assert.strictEqual(result.outputFiles[0].text, text)
assert.deepStrictEqual(result.outputFiles[0].contents, new Uint8Array(Buffer.from(text)))
},
async transformSyncJSMap({ esbuild }) {
const { code, map } = esbuild.transformSync(`1+2`, { sourcemap: true })
assert.strictEqual(code, `1 + 2;\n`)
assert.strictEqual(map, `{
"version": 3,
"sources": ["<stdin>"],
"sourcesContent": ["1+2"],
"mappings": "AAAA,IAAE;",
"names": []
}
`)
},
async transformSyncJSMapNoContent({ esbuild }) {
const { code, map } = esbuild.transformSync(`1+2`, { sourcemap: true, sourcesContent: false })
assert.strictEqual(code, `1 + 2;\n`)
assert.strictEqual(map, `{
"version": 3,
"sources": ["<stdin>"],
"mappings": "AAAA,IAAE;",
"names": []
}
`)
},
async transformSyncCSS({ esbuild }) {
const { code, map } = esbuild.transformSync(`a{b:c}`, { loader: 'css' })
assert.strictEqual(code, `a {\n b: c;\n}\n`)
assert.strictEqual(map, '')
},
async transformSyncWithNonString({ esbuild }) {
try {
esbuild.transformSync({ toString() { throw new Error('toString() error') } })
throw new Error('Expected an error to be thrown');
} catch (e) {
assert.strictEqual(e.message, 'toString() error')
}
var { code } = await esbuild.transformSync(Buffer.from(`1+2`))
assert.strictEqual(code, `1 + 2;\n`)
},
async transformSync100x({ esbuild }) {
for (let i = 0; i < 100; i++) {
const { code } = esbuild.transformSync(`console.log(1+${i})`, {})
assert.strictEqual(code, `console.log(1 + ${i});\n`)
}
},
async buildSyncThrow({ esbuild, testDir }) {
const input = path.join(testDir, 'in.js')
try {
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, '1+')
esbuild.buildSync({ entryPoints: [input], bundle: true, outfile: output, format: 'cjs', logLevel: 'silent' })
const result = require(output)
assert.strictEqual(result.default, 123)
assert.strictEqual(result.__esModule, true)
throw new Error('Expected an error to be thrown');
} catch (error) {
assert(error instanceof Error, 'Must be an Error object');
assert.strictEqual(error.message, `Build failed with 1 error:
${path.relative(process.cwd(), input).replace(/\\/g, '/')}:1:2: error: Unexpected end of file`);
assert.strictEqual(error.errors.length, 1);
assert.strictEqual(error.warnings.length, 0);
}
},
async buildSyncIncrementalThrow({ esbuild, testDir }) {
try {
const input = path.join(testDir, 'in.js')
const output = path.join(testDir, 'out.js')
await writeFileAsync(input, '1+')
esbuild.buildSync({ entryPoints: [input], bundle: true, outfile: output, format: 'cjs', logLevel: 'silent', incremental: true })
const result = require(output)
assert.strictEqual(result.default, 123)
assert.strictEqual(result.__esModule, true)
throw new Error('Expected an error to be thrown');
} catch (error) {
assert(error instanceof Error, 'Must be an Error object');
assert.strictEqual(error.message, `Build failed with 1 error:\nerror: Cannot use "incremental" with a synchronous build`);
assert.strictEqual(error.errors.length, 1);
assert.strictEqual(error.warnings.length, 0);
}
},
async transformThrow({ service }) {
try {
await service.transform(`1+`, {})
throw new Error('Expected an error to be thrown');
} catch (error) {
assert(error instanceof Error, 'Must be an Error object');
assert.strictEqual(error.message, `Transform failed with 1 error:\n<stdin>:1:2: error: Unexpected end of file`);
assert.strictEqual(error.errors.length, 1);
assert.strictEqual(error.warnings.length, 0);
}
},
}
let serialTests = {
async processCwdChangeTest({ esbuild, testDir }) {
let originalCWD = process.cwd();
let firstService
let secondService
try {
let aDir = path.join(testDir, 'a');
let bDir = path.join(testDir, 'b');
let aFile = path.join(aDir, 'a-in.js');
let bFile = path.join(bDir, 'b-in.js');
let aOut = path.join(aDir, 'a-out.js');
let bOut = path.join(bDir, 'b-out.js');
fs.mkdirSync(aDir);
fs.mkdirSync(bDir);
fs.writeFileSync(aFile, 'exports.x = true');
fs.writeFileSync(bFile, 'exports.y = true');
try {
process.chdir(aDir);
assert.strictEqual(process.cwd(), aDir);
firstService = await esbuild.startService();
try {
process.chdir(bDir);
assert.strictEqual(process.cwd(), bDir);
secondService = await esbuild.startService();
await Promise.all([
firstService.build({ entryPoints: [path.basename(aFile)], outfile: path.basename(aOut) }),
secondService.build({ entryPoints: [path.basename(bFile)], outfile: path.basename(bOut) }),
]);
assert.strictEqual(require(aOut).x, true)
assert.strictEqual(require(bOut).y, true)
} finally {
secondService.stop();
}
} finally {
firstService.stop();
}
} finally {
process.chdir(originalCWD);
}
},
async processCwdSymlinkInfiniteLoopTest({ esbuild, testDir }) {
if (process.platform === 'win32') {
// Ignore symlink tests on Windows, which doesn't have symlinks
return;
}
let originalCWD = process.cwd();
try {
let service
let aDir = path.join(testDir, 'a');
fs.mkdirSync(aDir, { recursive: true })
try {
process.chdir(aDir);
assert.strictEqual(process.cwd(), aDir);
service = await esbuild.startService();
let bDir = path.join(testDir, 'b');
fs.rmdirSync(aDir)
// Create two symlinks that point to each other, forming a loop
fs.symlinkSync(aDir, bDir);
fs.symlinkSync(bDir, aDir);
try {
// This should not crash or hang
await service.build({
entryPoints: [path.join(aDir, 'in.js')],
logLevel: 'silent',
write: false,
})
throw new Error('Expected a build failure')
} catch (e) {
let text = e + ''
if (!text.startsWith('Error: Build failed with ')) {
throw e
}
}
} finally {
service.stop();
}
} finally {
process.chdir(originalCWD);
}
},
}
async function assertSourceMap(jsSourceMap, source) {
const map = await new SourceMapConsumer(jsSourceMap)
const original = map.originalPositionFor({ line: 1, column: 4 })
assert.strictEqual(original.source, source)
assert.strictEqual(original.line, 1)
assert.strictEqual(original.column, 10)
}
async function main() {
const esbuild = installForTests()
// Create a fresh test directory
removeRecursiveSync(rootTestDir)
fs.mkdirSync(rootTestDir)
// Time out these tests after 5 minutes. This exists to help debug test hangs in CI.
let minutes = 5
let timeout = setTimeout(() => {
console.error(`❌ js api tests timed out after ${minutes} minutes, exiting...`)
process.exit(1)
}, minutes * 60 * 1000)
// Start the esbuild service
const service = await esbuild.startService()
// Run all tests concurrently
const runTest = async ([name, fn]) => {
let testDir = path.join(rootTestDir, name)
try {
await mkdirAsync(testDir)
await fn({ esbuild, service, testDir })
removeRecursiveSync(testDir)
return true
} catch (e) {
console.error(`❌ ${name}: ${e && e.message || e}`)
return false
}
}
const tests = [
...Object.entries(buildTests),
...Object.entries(watchTests),
...Object.entries(serveTests),
...Object.entries(transformTests),
...Object.entries(syncTests),
]
let allTestsPassed = (await Promise.all(tests.map(runTest))).every(success => success)
service.stop()
// Run some tests in serial at the end
for (let test of Object.entries(serialTests)) {
if (!await runTest(test)) {
allTestsPassed = false
}
}
if (!allTestsPassed) {
console.error(`❌ js api tests failed`)
process.exit(1)
} else {
console.log(`✅ js api tests passed`)
removeRecursiveSync(rootTestDir)
}
clearTimeout(timeout);
}
main().catch(e => setTimeout(() => { throw e }))
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