unbag/dist/esm/commands/transform/action/tasks/babel.mjs

一个专门用来开发npm工具的包

import { defineTransformActionTask, TransformActionTaskOutFileType } from "../index.mjs";
import { transformFileAsync } from "@babel/core";
const TransformActionTaskBabel = options => {
  const {
    babel: babelOptions,
    extMapping
  } = options;
  return defineTransformActionTask(async params => {
    const {
      inputDir,
      filePaths
    } = params;
    const matchedExtnames = Object.keys(extMapping);
    const filePathsFiltered = filePaths.filter(filePath => {
      if (matchedExtnames.includes(filePath.extname)) {
        return true;
      }
      return false;
    });
    const outputFiles = await Promise.all(filePathsFiltered.map(async filePath => {
      const absoluteFilePath = filePath.toAbsolutePath({
        rel: inputDir
      });
      const jsFile = await transformFileAsync(absoluteFilePath.content, {
        ...babelOptions
      });
      const targetExtName = extMapping[filePath.extname];
      return {
        from: filePath,
        to: filePath.replaceExtname(targetExtName),
        type: TransformActionTaskOutFileType.Transformed,
        content: jsFile?.code || "",
        sourcemap: void 0
      };
    }));
    return outputFiles;
  });
};
export { TransformActionTaskBabel };