// src/webpack/context.ts
import { resolve } from "path";
import sources from "webpack-sources";
import { Parser } from "acorn";
function createContext(compilation) {
  return {
    parse(code, opts = {}) {
      return Parser.parse(code, {
        sourceType: "module",
        ecmaVersion: "latest",
        locations: true,
        ...opts
      });
    },
    addWatchFile(id) {
      (compilation.fileDependencies ?? compilation.compilationDependencies).add(
        resolve(process.cwd(), id)
      );
    },
    emitFile(emittedFile) {
      const outFileName = emittedFile.fileName || emittedFile.name;
      if (emittedFile.source && outFileName) {
        compilation.emitAsset(
          outFileName,
          sources ? new sources.RawSource(
            typeof emittedFile.source === "string" ? emittedFile.source : Buffer.from(emittedFile.source)
          ) : {
            source: () => emittedFile.source,
            size: () => emittedFile.source.length
          }
        );
      }
    },
    getWatchFiles() {
      return Array.from(
        compilation.fileDependencies ?? compilation.compilationDependencies
      );
    }
  };
}

// src/webpack/loaders/transform.ts
async function transform(source, map) {
  const callback = this.async();
  let unpluginName;
  if (typeof this.query === "string") {
    const query = new URLSearchParams(this.query);
    unpluginName = query.get("unpluginName");
  } else {
    unpluginName = this.query.unpluginName;
  }
  const plugin = this._compiler?.$unpluginContext[unpluginName];
  if (!plugin?.transform)
    return callback(null, source, map);
  const context = {
    error: (error) => this.emitError(typeof error === "string" ? new Error(error) : error),
    warn: (error) => this.emitWarning(typeof error === "string" ? new Error(error) : error)
  };
  const res = await plugin.transform.call(Object.assign(this._compilation && createContext(this._compilation), context), source, this.resource);
  if (res == null)
    callback(null, source, map);
  else if (typeof res !== "string")
    callback(null, res.code, map == null ? map : res.map || map);
  else
    callback(null, res, map);
}
export {
  transform as default
};