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next.js/packages/next-server/taskfile-typescript.js
Tim Neutkens 15bb1c5e79
Use Typescript to transpile Next.js core files instead of Babel (#5747)
- Replaces taskr-babel with taskr-typescript for the `next` package
- Makes sure Node 8+ is used, no unneeded transpilation
- Compile Next.js client side files through babel the same way pages are
- Compile Next.js client side files to esmodules, not commonjs, so that tree shaking works.
- Move error-debug.js out of next-server as it's only used/require in development
- Drop ansi-html as dependency from next-server
- Make next/link esmodule (for tree-shaking)
- Make next/router esmodule (for tree-shaking)
- add typescript compilation to next-server
- Remove last remains of Flow
- Move hoist-non-react-statics to next, out of next-server
- Move htmlescape to next, out of next-server
- Remove runtime-corejs2 from next-server
2018-11-28 15:03:02 +01:00

44 lines
1.3 KiB
JavaScript

'use strict'
try {
const ts = require('typescript')
const extname = require('path').extname
const config = require('./tsconfig.json')
module.exports = function (task) {
task.plugin('typescript', { every: true }, function * (file, options) {
const opts = {
fileName: file.base,
compilerOptions: {
...config.compilerOptions,
...options
}
}
const ext = extname(file.base)
// For example files without an extension don't have to be rewritten
if (ext) {
// Replace `.ts` with `.js`
const extRegex = new RegExp(ext.replace('.', '\\.') + '$', 'i')
file.base = file.base.replace(extRegex, '.js')
}
// compile output
const result = ts.transpileModule(file.data.toString(), opts)
if (opts.compilerOptions.sourceMap && result.sourceMapText) {
// add sourcemap to `files` array
this._.files.push({
dir: file.dir,
base: `${file.base}.map`,
data: Buffer.from(JSON.stringify(result.sourceMapText), 'utf8')
})
}
// update file's data
file.data = Buffer.from(result.outputText.replace(/process\.env\.NEXT_VERSION/, `"${require('./package.json').version}"`), 'utf8')
})
}
} catch (err) {
console.error(err)
}