Bundler API

Rolldown 提供三个主要的 API 函数，用于以编程方式打包你的代码。

rolldown()

rolldown() 是与 Rollup 的 rollup 函数兼容的 API。

import { rolldown } from 'rolldown';

let bundle,
  failed = false;
try {
  bundle = await rolldown({
    input: 'src/main.js',
  });
  await bundle.write({
    format: 'esm',
  });
} catch (e) {
  console.error(e);
  failed = true;
}
if (bundle) {
  await bundle.close();
}
process.exitCode = failed ? 1 : 0;

更多详情请参见 其参考文档。

watch()

watch() 是与 Rollup 的 watch 函数兼容的 API。

import { watch } from 'rolldown';

const watcher = watch({/* ... */});
watcher.on('event', (event) => {
  if (event.code === 'BUNDLE_END') {
    console.log(event.duration);
    event.result.close();
  }
});

// 停止监听
watcher.close();

更多详情请参见 其参考文档。

build()

Experimental

This API is experimental and may change in a patch release.

build() is the simplest choice for most use cases. This API is similar to esbuild's build function. It performs bundling and writing in a single call, and cleans up automatically.

import { build } from 'rolldown';

const result = await build({
  input: 'src/main.js',
  output: {
    file: 'bundle.js',
  },
});
console.log(result);

For more details, see its reference documentation.