index.js 4.6 KB

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  1. "use strict";
  2. exports.__esModule = true;
  3. exports.default = void 0;
  4. var _corejs2BuiltIns = _interopRequireDefault(require("@babel/compat-data/corejs2-built-ins"));
  5. var _builtInDefinitions = require("./built-in-definitions");
  6. var _addPlatformSpecificPolyfills = _interopRequireDefault(require("./add-platform-specific-polyfills"));
  7. var _helpers = require("./helpers");
  8. var _helperDefinePolyfillProvider = _interopRequireDefault(require("@babel/helper-define-polyfill-provider"));
  9. var _core = require("@babel/core");
  10. function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  11. const presetEnvCompat = "#__secret_key__@babel/preset-env__compatibility";
  12. const runtimeCompat = "#__secret_key__@babel/runtime__compatibility"; // $FlowIgnore
  13. const has = Function.call.bind(Object.hasOwnProperty);
  14. var _default = (0, _helperDefinePolyfillProvider.default)(function (api, {
  15. [presetEnvCompat]: {
  16. entryInjectRegenerator
  17. } = {},
  18. [runtimeCompat]: {
  19. useBabelRuntime,
  20. runtimeVersion,
  21. ext = ".js"
  22. } = {}
  23. }) {
  24. const resolve = api.createMetaResolver({
  25. global: _builtInDefinitions.BuiltIns,
  26. static: _builtInDefinitions.StaticProperties,
  27. instance: _builtInDefinitions.InstanceProperties
  28. });
  29. const {
  30. debug,
  31. shouldInjectPolyfill,
  32. method
  33. } = api;
  34. const polyfills = (0, _addPlatformSpecificPolyfills.default)(api.targets, method, _corejs2BuiltIns.default);
  35. const coreJSBase = useBabelRuntime ? `${useBabelRuntime}/core-js` : method === "usage-pure" ? "core-js/library/fn" : "core-js/modules";
  36. function inject(name, utils) {
  37. if (typeof name === "string") {
  38. // Some polyfills aren't always available, for example
  39. // web.dom.iterable when targeting node
  40. if (has(polyfills, name) && shouldInjectPolyfill(name)) {
  41. debug(name);
  42. utils.injectGlobalImport(`${coreJSBase}/${name}.js`);
  43. }
  44. return;
  45. }
  46. name.forEach(name => inject(name, utils));
  47. }
  48. function maybeInjectPure(desc, hint, utils) {
  49. const {
  50. pure,
  51. meta,
  52. name
  53. } = desc;
  54. if (!pure || !shouldInjectPolyfill(name)) return;
  55. if (runtimeVersion && meta && meta.minRuntimeVersion && !(0, _helpers.hasMinVersion)(meta && meta.minRuntimeVersion, runtimeVersion)) {
  56. return;
  57. }
  58. return utils.injectDefaultImport(`${coreJSBase}/${pure}${ext}`, hint);
  59. }
  60. return {
  61. name: "corejs2",
  62. polyfills,
  63. entryGlobal(meta, utils, path) {
  64. if (meta.kind === "import" && meta.source === "core-js") {
  65. debug(null);
  66. inject(Object.keys(polyfills), utils);
  67. if (entryInjectRegenerator) {
  68. utils.injectGlobalImport("regenerator-runtime/runtime.js");
  69. }
  70. path.remove();
  71. }
  72. },
  73. usageGlobal(meta, utils) {
  74. const resolved = resolve(meta);
  75. if (!resolved) return;
  76. let deps = resolved.desc.global;
  77. if (resolved.kind !== "global" && meta.object && meta.placement === "prototype") {
  78. const low = meta.object.toLowerCase();
  79. deps = deps.filter(m => m.includes(low));
  80. }
  81. inject(deps, utils);
  82. },
  83. usagePure(meta, utils, path) {
  84. if (meta.kind === "in") {
  85. if (meta.key === "Symbol.iterator") {
  86. path.replaceWith(_core.types.callExpression(utils.injectDefaultImport(`${coreJSBase}/is-iterable${ext}`, "isIterable"), [path.node.right]));
  87. }
  88. return;
  89. }
  90. if (path.parentPath.isUnaryExpression({
  91. operator: "delete"
  92. })) return;
  93. if (meta.kind === "property") {
  94. // We can't compile destructuring.
  95. if (!path.isMemberExpression()) return;
  96. if (!path.isReferenced()) return;
  97. if (meta.key === "Symbol.iterator" && shouldInjectPolyfill("es6.symbol") && path.parentPath.isCallExpression({
  98. callee: path.node
  99. }) && path.parent.arguments.length === 0) {
  100. path.parentPath.replaceWith(_core.types.callExpression(utils.injectDefaultImport(`${coreJSBase}/get-iterator${ext}`, "getIterator"), [path.node.object]));
  101. path.skip();
  102. return;
  103. }
  104. }
  105. const resolved = resolve(meta);
  106. if (!resolved) return;
  107. const id = maybeInjectPure(resolved.desc, resolved.name, utils);
  108. if (id) path.replaceWith(id);
  109. },
  110. visitor: method === "usage-global" && {
  111. // yield*
  112. YieldExpression(path) {
  113. if (path.node.delegate) {
  114. inject("web.dom.iterable", api.getUtils(path));
  115. }
  116. },
  117. // for-of, [a, b] = c
  118. "ForOfStatement|ArrayPattern"(path) {
  119. _builtInDefinitions.CommonIterators.forEach(name => inject(name, api.getUtils(path)));
  120. }
  121. }
  122. };
  123. });
  124. exports.default = _default;