93 lines
3.1 KiB
JavaScript
93 lines
3.1 KiB
JavaScript
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import { test } from 'node:test'
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import assert from 'node:assert'
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import transform from '../lib/transform.js'
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test('converts a classic choo v7 header to v8 ESM', () => {
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const src = [
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"var choo = require('choo')",
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"var html = require('choo/html')",
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"var devtools = require('choo-devtools')",
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'',
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'var app = choo()',
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"app.use(devtools())",
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'module.exports = app'
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].join('\n')
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const { code, changed, notes } = transform(src)
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assert.ok(changed)
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assert.match(code, /import choo from '@choojs\/core'/)
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assert.match(code, /import html from '@choojs\/html'/)
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assert.match(code, /import devtools from '@choojs\/devtools'/)
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assert.match(code, /export default app/)
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assert.deepStrictEqual(notes, [])
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})
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test('destructured and property requires', () => {
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const src = [
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"const { render } = require('some-lib')",
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"const thing = require('other-lib').thing",
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"const dflt = require('third-lib').default",
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"require('./side-effect')"
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].join('\n')
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const { code } = transform(src)
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assert.match(code, /import { render } from 'some-lib'/)
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assert.match(code, /import { thing as thing } from 'other-lib'/)
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assert.match(code, /import dflt from 'third-lib'/)
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assert.match(code, /import '\.\/side-effect'/)
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})
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test('already-ESM sources get specifiers remapped', () => {
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const src = [
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"import choo from 'choo'",
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"import html from 'nanohtml'",
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"import raw from 'nanohtml/raw'",
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"import morph from 'nanomorph'",
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"import Component from 'nanocomponent'"
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].join('\n')
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const { code } = transform(src)
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assert.match(code, /from '@choojs\/core'/)
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assert.match(code, /from '@choojs\/html'\n/)
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assert.match(code, /from '@choojs\/html\/raw'/)
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assert.match(code, /from '@choojs\/html\/morph'/)
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assert.match(code, /from '@choojs\/component'/)
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})
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test('retired packages produce notes, not rewrites', () => {
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const src = [
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"var nanobus = require('nanobus')",
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"var lazyRoute = require('choo-lazy-route')"
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].join('\n')
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const { code, notes } = transform(src)
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assert.match(code, /from 'nanobus'/, 'retired specifier left for the human')
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assert.ok(notes.some((n) => n.includes('nanobus')))
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assert.ok(notes.some((n) => n.includes('lazy()')), 'choo-lazy-route points at lazy()')
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})
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test('dynamic import() specifiers are remapped too', () => {
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const { code } = transform("const mod = await import('choo/html')")
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assert.match(code, /import\('@choojs\/html'\)/)
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})
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test('unconvertible CJS is reported honestly', () => {
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const src = [
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"module.exports.helper = function () {}",
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"function f () { const x = require('choo') }"
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].join('\n')
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const { code, notes } = transform(src)
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assert.match(code, /require\('@choojs\/core'\)/, 'specifier remapped even inside functions')
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assert.ok(notes.some((n) => n.includes('module.exports')))
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assert.ok(notes.some((n) => n.includes('require() calls remain')))
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})
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test('non-choo sources pass through untouched', () => {
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const src = "import fs from 'node:fs'\nexport const x = 1\n"
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const { changed, notes } = transform(src)
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assert.strictEqual(changed, false)
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assert.deepStrictEqual(notes, [])
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})
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