@ali-i18n-fe/dada-component/libs/webpack/mergeWebpack.js

dada component

const merge = require("webpack-merge");
const uniq = require("lodash/uniq");

exports.mergeWebpack = function (...mergeConfigs) {
  const otherConfigs = [];
  const totalExternals = [];
  const moduleConfig = merge.smart(
    ...mergeConfigs.map(({ module, externals, ...restConfig }) => {
      otherConfigs.push(restConfig);
      totalExternals.push(
        ...(Array.isArray(externals) ? externals : [externals])
      );

      return { module };
    })
  );

  const resultConfig = merge(...otherConfigs);

  const result = Object.assign(resultConfig, moduleConfig);
  result.externals = uniq(totalExternals)
    .filter(Boolean)
    .reduce((prev, item) => Object.assign(prev, item), {});

  return result;
};