transform.js 2.0 KB

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  1. "use strict";
  2. function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
  3. function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
  4. const babel = require("@babel/core");
  5. const {
  6. promisify
  7. } = require("util");
  8. const LoaderError = require("./Error");
  9. const transform = promisify(babel.transform);
  10. module.exports = /*#__PURE__*/function () {
  11. var _ref = _asyncToGenerator(function* (source, options) {
  12. let result;
  13. try {
  14. result = yield transform(source, options);
  15. } catch (err) {
  16. throw err.message && err.codeFrame ? new LoaderError(err) : err;
  17. }
  18. if (!result) return null;
  19. // We don't return the full result here because some entries are not
  20. // really serializable. For a full list of properties see here:
  21. // https://github.com/babel/babel/blob/main/packages/babel-core/src/transformation/index.js
  22. // For discussion on this topic see here:
  23. // https://github.com/babel/babel-loader/pull/629
  24. const {
  25. ast,
  26. code,
  27. map,
  28. metadata,
  29. sourceType,
  30. externalDependencies
  31. } = result;
  32. if (map && (!map.sourcesContent || !map.sourcesContent.length)) {
  33. map.sourcesContent = [source];
  34. }
  35. return {
  36. ast,
  37. code,
  38. map,
  39. metadata,
  40. sourceType,
  41. // Convert it from a Set to an Array to make it JSON-serializable.
  42. externalDependencies: Array.from(externalDependencies || [])
  43. };
  44. });
  45. return function (_x, _x2) {
  46. return _ref.apply(this, arguments);
  47. };
  48. }();
  49. module.exports.version = babel.version;