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import { nextTestSetup } from 'e2e-utils'
describe('app-dir build size', () => {
const { next, isNextStart, skipped } = nextTestSetup({
files: __dirname,
skipDeployment: true,
})
if (skipped) {
return
}
if (isNextStart) {
it('should have correct size in build output', async () => {
const regex = /(\S+)\s+([\d.]+\s\w+)\s+([\d.]+\s\w+)/g
const matches = [...next.cliOutput.matchAll(regex)]
const result = matches.reduce((acc, match) => {
const [, path, size, firstLoadJS] = match
acc[path] = { size, firstLoadJS }
return acc
}, {})
// convert pretty-bytes format into bytes so we can compare units
const sizeToBytes = (size: string) => {
const units = ['B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']
const [value, unit] = size.split(' ', 2)
const exp = units.indexOf(unit)
return parseFloat(value) * Math.pow(1024, exp)
}
const index = result['/']
const foo = result['/foo']
expect(sizeToBytes(index.firstLoadJS)).toBeGreaterThan(0)
expect(sizeToBytes(foo.firstLoadJS)).toBeGreaterThan(0)
// index route is a page with no client JS, so it could serve zero additional JS (size = 0)
// foo route is a page with client references, so it has to serve additional non-shared JS
expect(sizeToBytes(foo.size)).toBeGreaterThan(0)
// foo has a client component, so it should be larger than index
expect(sizeToBytes(foo.size)).toBeGreaterThan(sizeToBytes(index.size))
})
} else {
it('should skip next dev for now', () => {})
return
}
})
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