| |
| import { transform } from '@babel/core' |
|
|
| const trim = (s) => s.join('\n').trim().replace(/^\s+/gm, '') |
|
|
| |
| const NODE_ENV = process.env.NODE_ENV |
| ;(process.env as any).NODE_ENV = 'production' |
| const plugin = require('next/dist/build/babel/plugins/next-ssg-transform') |
| ;(process.env as any).NODE_ENV = NODE_ENV |
|
|
| const babel = (code, esm = true, pluginOptions = {}) => |
| transform(code, { |
| filename: 'noop.js', |
| presets: [['@babel/preset-react', { development: false, pragma: '__jsx' }]], |
| plugins: [[plugin, pluginOptions]], |
| babelrc: false, |
| configFile: false, |
| sourceType: 'module', |
| compact: true, |
| caller: { |
| name: 'tests', |
| supportsStaticESM: esm, |
| }, |
| }).code |
|
|
| describe('babel plugin (next-ssg-transform)', () => { |
| describe('getStaticProps support', () => { |
| it('should remove separate named export specifiers', () => { |
| const output = babel(trim` |
| export { getStaticPaths } from '.' |
| export { a as getStaticProps } from '.' |
| |
| export default function Test() { |
| return <div /> |
| } |
| `) |
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export default function Test(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('should remove combined named export specifiers', () => { |
| const output = babel(trim` |
| export { getStaticPaths, a as getStaticProps } from '.' |
| |
| export default function Test() { |
| return <div /> |
| } |
| `) |
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export default function Test(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('should retain extra named export specifiers', () => { |
| const output = babel(trim` |
| export { getStaticPaths, a as getStaticProps, foo, bar as baz } from '.' |
| |
| export default function Test() { |
| return <div /> |
| } |
| `) |
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export{foo,bar as baz}from'.';export default function Test(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('should remove named export function declarations', () => { |
| const output = babel(trim` |
| export function getStaticPaths() { |
| return [] |
| } |
| |
| export function getStaticProps() { |
| return { props: {} } |
| } |
| |
| export default function Test() { |
| return <div /> |
| } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export default function Test(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('should remove named export function declarations (async)', () => { |
| const output = babel(trim` |
| export async function getStaticPaths() { |
| return [] |
| } |
| |
| export async function getStaticProps() { |
| return { props: {} } |
| } |
| |
| export default function Test() { |
| return <div /> |
| } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export default function Test(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('should not remove extra named export function declarations', () => { |
| const output = babel(trim` |
| export function getStaticProps() { |
| return { props: {} } |
| } |
| |
| export function Noop() {} |
| |
| export default function Test() { |
| return <div /> |
| } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export function Noop(){}export default function Test(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('should remove named export variable declarations', () => { |
| const output = babel(trim` |
| export const getStaticPaths = () => { |
| return [] |
| } |
| |
| export const getStaticProps = function() { |
| return { props: {} } |
| } |
| |
| export default function Test() { |
| return <div /> |
| } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export default function Test(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('should remove named export variable declarations (async)', () => { |
| const output = babel(trim` |
| export const getStaticPaths = async () => { |
| return [] |
| } |
| |
| export const getStaticProps = async function() { |
| return { props: {} } |
| } |
| |
| export default function Test() { |
| return <div /> |
| } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export default function Test(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('should not remove extra named export variable declarations', () => { |
| const output = babel(trim` |
| export const getStaticPaths = () => { |
| return [] |
| }, foo = 2 |
| |
| export const getStaticProps = function() { |
| return { props: {} } |
| } |
| |
| export default function Test() { |
| return <div /> |
| } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export const foo=2;export default function Test(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('should remove re-exported variable declarations', () => { |
| const output = babel(trim` |
| const getStaticPaths = () => { |
| return [] |
| } |
| |
| export { getStaticPaths } |
| |
| export default function Test() { |
| return <div /> |
| } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export default function Test(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('should remove re-exported variable declarations (safe)', () => { |
| const output = babel(trim` |
| const getStaticPaths = () => { |
| return [] |
| }, a = 2 |
| |
| export { getStaticPaths } |
| |
| export default function Test() { |
| return <div /> |
| } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"const a=2;export var __N_SSG=true;export default function Test(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('should remove re-exported function declarations', () => { |
| const output = babel(trim` |
| function getStaticPaths() { |
| return [] |
| } |
| |
| export { getStaticPaths } |
| |
| export default function Test() { |
| return <div /> |
| } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export default function Test(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('should not crash for class declarations', () => { |
| const output = babel(trim` |
| function getStaticPaths() { |
| return [] |
| } |
| |
| export { getStaticPaths } |
| |
| export class MyClass {} |
| |
| export default function Test() { |
| return <div /> |
| } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export class MyClass{}export default function Test(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it(`should remove re-exported function declarations' dependents (variables, functions, imports)`, () => { |
| const output = babel(trim` |
| import keep_me from 'hello' |
| import {keep_me2} from 'hello2' |
| import * as keep_me3 from 'hello3' |
| |
| import drop_me from 'bla' |
| import { drop_me2 } from 'foo' |
| import { drop_me3, but_not_me } from 'bar' |
| import * as remove_mua from 'hehe' |
| |
| var leave_me_alone = 1; |
| function dont_bug_me_either() {} |
| |
| const inceptionVar = 'hahaa'; |
| var var1 = 1; |
| let var2 = 2; |
| const var3 = inceptionVar + remove_mua; |
| |
| function inception1() {var2;drop_me2;} |
| |
| function abc() {} |
| const b = function() {var3;drop_me3;}; |
| const b2 = function apples() {}; |
| const bla = () => {inception1}; |
| |
| function getStaticProps() { |
| abc(); |
| drop_me; |
| b; |
| b2; |
| bla(); |
| return { props: {var1} } |
| } |
| |
| export { getStaticProps } |
| |
| export default function Test() { |
| return <div /> |
| } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"import keep_me from'hello';import{keep_me2}from'hello2';import*as keep_me3 from'hello3';import{but_not_me}from'bar';var leave_me_alone=1;function dont_bug_me_either(){}export var __N_SSG=true;export default function Test(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('should not mix up bindings', () => { |
| const output = babel(trim` |
| function Function1() { |
| return { |
| a: function bug(a) { |
| return 2; |
| } |
| }; |
| } |
| |
| function Function2() { |
| var bug = 1; |
| return { bug }; |
| } |
| |
| export { getStaticProps } from 'a' |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"function Function1(){return{a:function bug(a){return 2;}};}function Function2(){var bug=1;return{bug};}"` |
| ) |
| }) |
|
|
| it('should support class exports', () => { |
| const output = babel(trim` |
| export function getStaticProps() { |
| return { props: {} } |
| } |
| |
| export default class Test extends React.Component { |
| render() { |
| return <div /> |
| } |
| } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export default class Test extends React.Component{render(){return __jsx("div",null);}}"` |
| ) |
| }) |
|
|
| it('should support class exports 2', () => { |
| const output = babel(trim` |
| export function getStaticProps() { |
| return { props: {} } |
| } |
| |
| class Test extends React.Component { |
| render() { |
| return <div /> |
| } |
| } |
| |
| export default Test; |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"class Test extends React.Component{render(){return __jsx("div",null);}}export var __N_SSG=true;export default Test;"` |
| ) |
| }) |
|
|
| it('should support export { _ as default }', () => { |
| const output = babel(trim` |
| export function getStaticProps() { |
| return { props: {} } |
| } |
| |
| function El() { |
| return <div /> |
| } |
| |
| export { El as default } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"function El(){return __jsx("div",null);}export var __N_SSG=true;export{El as default};"` |
| ) |
| }) |
|
|
| it('should support export { _ as default } with other specifiers', () => { |
| const output = babel(trim` |
| export function getStaticProps() { |
| return { props: {} } |
| } |
| |
| function El() { |
| return <div /> |
| } |
| |
| const a = 5 |
| |
| export { El as default, a } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"function El(){return __jsx("div",null);}const a=5;export var __N_SSG=true;export{El as default,a};"` |
| ) |
| }) |
|
|
| it('should support export { _ as default } with a class', () => { |
| const output = babel(trim` |
| export function getStaticProps() { |
| return { props: {} } |
| } |
| |
| class El extends React.Component { |
| render() { |
| return <div /> |
| } |
| } |
| |
| const a = 5 |
| |
| export { El as default, a } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"class El extends React.Component{render(){return __jsx("div",null);}}const a=5;export var __N_SSG=true;export{El as default,a};"` |
| ) |
| }) |
|
|
| it('should support full re-export', () => { |
| const output = babel(trim` |
| export { getStaticProps, default } from 'a' |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export{default}from'a';"` |
| ) |
| }) |
|
|
| it('should support babel-style memoized function', () => { |
| const output = babel(trim` |
| function fn() { |
| fn = function () {}; |
| return fn.apply(this, arguments); |
| } |
| export function getStaticProps() { |
| fn; |
| } |
| export default function Home() { return <div />; } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"export var __N_SSG=true;export default function Home(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('destructuring assignment (object)', () => { |
| const output = babel(trim` |
| import fs from 'fs'; |
| import other from 'other'; |
| |
| const {readFile, readdir, access: foo} = fs.promises; |
| const {a,b, cat: bar,...rem} = other; |
| |
| export async function getStaticProps() { |
| readFile; |
| readdir; |
| foo; |
| b; |
| cat; |
| rem; |
| } |
| export default function Home() { return <div />; } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"import other from'other';const{a,cat:bar}=other;export var __N_SSG=true;export default function Home(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('destructuring assignment (array)', () => { |
| const output = babel(trim` |
| import fs from 'fs'; |
| import other from 'other'; |
| |
| const [a, b, ...rest]= fs.promises; |
| const [foo, bar] = other; |
| |
| export async function getStaticProps() { |
| a; |
| b; |
| rest; |
| bar; |
| } |
| export default function Home() { return <div />; } |
| `) |
|
|
| expect(output).toMatchInlineSnapshot( |
| `"import other from'other';const[foo]=other;export var __N_SSG=true;export default function Home(){return __jsx("div",null);}"` |
| ) |
| }) |
|
|
| it('errors for incorrect mix of functions', () => { |
| expect(() => |
| babel(trim` |
| export function getStaticProps() {} |
| export function getServerSideProps() {} |
| `) |
| ).toThrow( |
| `You can not use getStaticProps or getStaticPaths with getServerSideProps. To use SSG, please remove getServerSideProps` |
| ) |
|
|
| expect(() => |
| babel(trim` |
| export function getServerSideProps() {} |
| export function getStaticProps() {} |
| `) |
| ).toThrow( |
| `You can not use getStaticProps or getStaticPaths with getServerSideProps. To use SSG, please remove getServerSideProps` |
| ) |
|
|
| expect(() => |
| babel(trim` |
| export function getStaticPaths() {} |
| export function getServerSideProps() {} |
| `) |
| ).toThrow( |
| `You can not use getStaticProps or getStaticPaths with getServerSideProps. To use SSG, please remove getServerSideProps` |
| ) |
|
|
| expect(() => |
| babel(trim` |
| export function getServerSideProps() {} |
| export function getStaticPaths() {} |
| `) |
| ).toThrow( |
| `You can not use getStaticProps or getStaticPaths with getServerSideProps. To use SSG, please remove getServerSideProps` |
| ) |
| }) |
| }) |
| }) |
|
|
