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index.spec.js
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index.spec.js
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const fs = require('fs')
const test = require('ava')
const { pipe, concat } = require('mississippi')
const { SourceMapConsumer } = require('source-map')
const convertSourceMap = require('convert-source-map')
const pack = require('../src')
test('dummy test', (t) => {
pack({
includePrelude: false,
})
t.pass('no error thrown')
})
test('sourcemap test', async (t) => {
const packStream = pack({
raw: true,
includePrelude: false,
devMode: true,
// hasExports: true,
bundleWithPrecompiledModules: true,
})
// concat pack into a buffer
const { promise, resolve, callback } = deferred()
pipe(packStream, concat(resolve), callback)
// add modules
const modules = [
{
id: '1',
sourceFile: 'index.js',
source: "require('./log.js'); require('./util.js')",
deps: {
'./log.js': '2',
'./util.js': '3',
},
entry: true,
},
{
id: '2',
sourceFile: 'log.js',
source:
"console.log('hi');\nnew Error('danger');\nconsole.log('the end');",
deps: {},
},
{
id: '3',
sourceFile: 'util.js',
source: 'module.exports.add = (a,b) => a+b',
deps: {},
},
]
modules.forEach((moduleData) => {
packStream.write(moduleData)
})
packStream.end()
const bundleBuffer = await promise
const bundleString = bundleBuffer.toString()
t.log(bundleString)
fs.writeFileSync('./bundle.js', bundleBuffer)
const converter = convertSourceMap.fromSource(bundleString)
const rawSourceMap = converter.toObject()
const consumer = await new SourceMapConsumer(rawSourceMap)
modules.forEach(({ sourceFile }) => {
const bundleStartPos = consumer.generatedPositionFor({
source: sourceFile,
line: 1,
column: 0,
})
const bundleLine = bundleString.split('\n')[bundleStartPos.line - 1]
t.log(`${sourceFile}:\n${bundleLine}`)
})
consumer.destroy()
t.pass('no error thrown')
})
test('detect invalid module', (t) => {
t.plan(2)
const packStream = pack({
raw: true,
includePrelude: false,
devMode: true,
bundleWithPrecompiledModules: true,
})
t.throws(
() => {
packStream.write({
id: '2',
sourceFile: 'log.js',
source: '>>invalid code<<',
deps: {},
})
},
{ message: "Invalid JavaScript: Unexpected token '>>'" }
)
const packStream2 = pack({
raw: true,
includePrelude: true,
devMode: true,
bundleWithPrecompiledModules: false,
})
t.throws(
() => {
packStream2.write({
id: '2',
sourceFile: 'log.js',
source: '>>invalid code<<',
deps: {},
})
},
{ message: "Invalid JavaScript: Unexpected token '>>'" }
)
})
function deferred() {
const result = {}
result.promise = new Promise((resolve, reject) => {
result.resolve = resolve
result.reject = reject
result.callback = (err) => {
if (err) {
reject(err)
} else {
resolve()
}
}
})
return result
}