preconstruct/lib/rollup-plugins/terser.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = terser;

var _codeFrame = require("@babel/code-frame");

var _workerClient = require("../worker-client");

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function terser(userOptions = {}) {
  if (userOptions.sourceMap != null) {
    throw Error("sourceMap option is removed, use sourcemap instead");
  }

  return {
    name: "terser",

    renderChunk(code, chunk, outputOptions) {
      // TODO rewrite with object spread after node6 drop
      const normalizedOptions = _objectSpread({}, userOptions, {
        sourceMap: userOptions.sourcemap !== false,
        module: outputOptions.format === "es" || outputOptions.format === "esm"
      });

      if (normalizedOptions.hasOwnProperty("sourcemap")) {
        delete normalizedOptions["sourcemap"];
      }

      const result = (0, _workerClient.getWorker)().transformTerser(code, JSON.stringify(normalizedOptions)).catch(error => {
        const {
          message,
          line,
          col: column
        } = error;
        console.error((0, _codeFrame.codeFrameColumns)(code, {
          start: {
            line,
            column
          }
        }, {
          message
        }));
        throw error;
      });
      return result;
    }

  };
}