feat: next

src/bundle.js

@@ -0,0 +1,46 @@
+const Mfs = require('memory-fs'),
+  webpack = require('webpack'),
+  { fromCallback } = require('bluebird'),
+  { resolve, join, relative } = require('path'),
+  isObject = (x) => typeof x === 'object',
+  isString = (x) => typeof x === 'string'
+
+function* bundle (compiler, next) {
+  let bundleConfig = compiler.options.bundle
+  if (!bundleConfig) {
+    return next()
+  }
+
+  const
+    input = compiler.options.input || require.resolve(process.cwd()),
+    fs = new Mfs(),
+    path = resolve('nexe'),
+    filename = 'virtual-bundle.js'
+
+  if (isString(bundleConfig)) {
+    bundleConfig === require(relative(process.cwd(), bundleConfig))
+  } else if (!isObject(bundleConfig)) {
+    bundleConfig = {
+      entry: resolve(input),
+      target: 'node',
+      output: { path, filename }
+    }
+  }
+
+  const bundler = webpack(bundleConfig)
+  bundler.outputFileSystem = fs
+  const stats = yield fromCallback(cb => bundler.run(cb))
+
+  if (stats.hasErrors()) {
+    compiler.log.error(stats.toString())
+    return null
+  }
+  //eslint-disable-next-line no-sync
+  compiler.input = fs.readFileSync(
+    join(bundleConfig.output.path, bundleConfig.output.filename)
+  )
+
+  return next()
+}
+
+module.exports.bundle = bundle