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import os from 'os' |
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import path from 'path' |
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import { Span } from 'next/dist/trace' |
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import loader from 'next/dist/build/babel/loader' |
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const dir = path.resolve(os.tmpdir()) |
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const babel = async (code: string, queryOpts = {} as any) => { |
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const { isServer = false, resourcePath = `index.js` } = queryOpts |
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let isAsync = false |
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const options = { |
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cwd: dir, |
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isServer, |
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distDir: path.resolve(dir, '.next'), |
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pagesDir: |
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'pagesDir' in queryOpts ? queryOpts.pagesDir : path.resolve(dir, 'pages'), |
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cache: false, |
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development: true, |
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hasReactRefresh: !isServer, |
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} |
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return new Promise<string>((resolve, reject) => { |
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function callback(err, content) { |
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if (err) { |
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reject(err) |
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} else { |
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resolve(content.replace(/\n/g, '')) |
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} |
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} |
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const res = loader.bind({ |
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resourcePath, |
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async() { |
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isAsync = true |
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return callback |
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}, |
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callback, |
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emitWarning() {}, |
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query: options, |
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getOptions: function () { |
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return options |
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}, |
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currentTraceSpan: new Span({ name: 'test' }), |
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})(code, null) |
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if (!isAsync) { |
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resolve(res) |
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} |
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}) |
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} |
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describe('next-babel-loader', () => { |
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describe('replace constants', () => { |
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it('should replace NODE_ENV on client (dev)', async () => { |
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const code = await babel(`process.env.NODE_ENV`, { |
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isServer: false, |
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}) |
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expect(code).toMatchInlineSnapshot(`""development";"`) |
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}) |
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it('should replace NODE_ENV in statement (dev)', async () => { |
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const code = await babel(`if (process.env.NODE_ENV === 'development') {}`) |
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expect(code).toMatchInlineSnapshot(`"if (true) {}"`) |
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}) |
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it('should support 9.4 regression', async () => { |
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const pageFile = path.resolve(dir, 'pages', 'index.js') |
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const output = await babel( |
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` |
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import React from "react"; |
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import queryGraphql from "../graphql/schema"; |
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const gql = String.raw; |
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export default function Home({ greeting }) { |
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return <h1>{greeting}</h1>; |
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} |
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export async function getStaticProps() { |
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const greeting = await getGreeting(); |
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return { |
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props: { |
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greeting, |
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}, |
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}; |
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} |
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async function getGreeting() { |
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const result = await queryGraphql( |
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gql\` |
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{ |
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query { |
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greeting |
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} |
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} |
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\` |
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); |
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return result.data.greeting; |
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} |
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`, |
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{ resourcePath: pageFile, isServer: false } |
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) |
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expect(output).toContain( |
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`var __jsx = React.createElement;import React from "react";export var __N_SSG = true;export default function Home(_ref) { var greeting = _ref.greeting; return __jsx("h1", { __self: this, __source: { fileName: _jsxFileName, lineNumber: 8, columnNumber: 20 } }, greeting);}_c = Home;var _c;$RefreshReg$(_c, "Home");` |
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) |
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}) |
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}) |
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}) |
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