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taskfile-swc.js
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taskfile-swc.js
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// taskr babel plugin with Babel 7 support
// https://github.com/lukeed/taskr/pull/305
const path = require('path')
// eslint-disable-next-line import/no-extraneous-dependencies
const transform = require('@swc/core').transform
module.exports = function (task) {
// eslint-disable-next-line require-yield
task.plugin(
'swc',
{},
function* (
file,
serverOrClient,
{
stripExtension,
keepImportAssertions = false,
interopClientDefaultExport = false,
} = {}
) {
// Don't compile .d.ts
if (file.base.endsWith('.d.ts')) return
const isClient = serverOrClient === 'client'
const swcClientOptions = {
module: {
type: 'commonjs',
ignoreDynamic: true,
},
jsc: {
loose: true,
target: 'es2016',
parser: {
syntax: 'typescript',
dynamicImport: true,
importAssertions: true,
tsx: file.base.endsWith('.tsx'),
},
experimental: {
keepImportAssertions,
},
transform: {
react: {
pragma: 'React.createElement',
pragmaFrag: 'React.Fragment',
throwIfNamespace: true,
development: false,
useBuiltins: true,
},
},
},
}
const swcServerOptions = {
module: {
type: 'commonjs',
ignoreDynamic: true,
},
env: {
targets: {
node: '12.0.0',
},
},
jsc: {
loose: true,
parser: {
syntax: 'typescript',
dynamicImport: true,
importAssertions: true,
tsx: file.base.endsWith('.tsx'),
},
experimental: {
keepImportAssertions,
},
transform: {
react: {
pragma: 'React.createElement',
pragmaFrag: 'React.Fragment',
throwIfNamespace: true,
development: false,
useBuiltins: true,
},
},
},
}
const swcOptions = isClient ? swcClientOptions : swcServerOptions
const filePath = path.join(file.dir, file.base)
const fullFilePath = path.join(__dirname, filePath)
const distFilePath = path.dirname(path.join(__dirname, 'dist', filePath))
const options = {
filename: path.join(file.dir, file.base),
sourceMaps: true,
inlineSourcesContent: false,
sourceFileName: path.relative(distFilePath, fullFilePath),
...swcOptions,
}
const output = yield transform(file.data.toString('utf-8'), options)
const ext = path.extname(file.base)
// Replace `.ts|.tsx` with `.js` in files with an extension
if (ext) {
const extRegex = new RegExp(ext.replace('.', '\\.') + '$', 'i')
// Remove the extension if stripExtension is enabled or replace it with `.js`
file.base = file.base.replace(extRegex, stripExtension ? '' : '.js')
}
if (output.map) {
if (interopClientDefaultExport) {
output.code += `
if (typeof exports.default === 'function' || (typeof exports.default === 'object' && exports.default !== null)) {
Object.defineProperty(exports.default, '__esModule', { value: true });
Object.assign(exports.default, exports);
module.exports = exports.default;
}
`
}
const map = `${file.base}.map`
output.code += Buffer.from(`\n//# sourceMappingURL=${map}`)
// add sourcemap to `files` array
this._.files.push({
base: map,
dir: file.dir,
data: Buffer.from(output.map),
})
}
file.data = Buffer.from(setNextVersion(output.code))
}
)
}
function setNextVersion(code) {
return code.replace(
/process\.env\.__NEXT_VERSION/g,
`"${require('./package.json').version}"`
)
}