index.js 10 KB

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  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", {
  3. value: true
  4. });
  5. exports.default = void 0;
  6. var _helperMemberExpressionToFunctions = require("@babel/helper-member-expression-to-functions");
  7. var _helperOptimiseCallExpression = require("@babel/helper-optimise-call-expression");
  8. var _core = require("@babel/core");
  9. var _traverse = require("@babel/traverse");
  10. const {
  11. assignmentExpression,
  12. callExpression,
  13. cloneNode,
  14. identifier,
  15. memberExpression,
  16. sequenceExpression,
  17. stringLiteral,
  18. thisExpression
  19. } = _core.types;
  20. {
  21. exports.environmentVisitor = _traverse.visitors.environmentVisitor({});
  22. exports.skipAllButComputedKey = function skipAllButComputedKey(path) {
  23. path.skip();
  24. if (path.node.computed) {
  25. path.context.maybeQueue(path.get("key"));
  26. }
  27. };
  28. }
  29. const visitor = _traverse.visitors.environmentVisitor({
  30. Super(path, state) {
  31. const {
  32. node,
  33. parentPath
  34. } = path;
  35. if (!parentPath.isMemberExpression({
  36. object: node
  37. })) return;
  38. state.handle(parentPath);
  39. }
  40. });
  41. const unshadowSuperBindingVisitor = _traverse.visitors.environmentVisitor({
  42. Scopable(path, {
  43. refName
  44. }) {
  45. const binding = path.scope.getOwnBinding(refName);
  46. if (binding && binding.identifier.name === refName) {
  47. path.scope.rename(refName);
  48. }
  49. }
  50. });
  51. const specHandlers = {
  52. memoise(superMember, count) {
  53. const {
  54. scope,
  55. node
  56. } = superMember;
  57. const {
  58. computed,
  59. property
  60. } = node;
  61. if (!computed) {
  62. return;
  63. }
  64. const memo = scope.maybeGenerateMemoised(property);
  65. if (!memo) {
  66. return;
  67. }
  68. this.memoiser.set(property, memo, count);
  69. },
  70. prop(superMember) {
  71. const {
  72. computed,
  73. property
  74. } = superMember.node;
  75. if (this.memoiser.has(property)) {
  76. return cloneNode(this.memoiser.get(property));
  77. }
  78. if (computed) {
  79. return cloneNode(property);
  80. }
  81. return stringLiteral(property.name);
  82. },
  83. _getPrototypeOfExpression() {
  84. const objectRef = cloneNode(this.getObjectRef());
  85. const targetRef = this.isStatic || this.isPrivateMethod ? objectRef : memberExpression(objectRef, identifier("prototype"));
  86. return callExpression(this.file.addHelper("getPrototypeOf"), [targetRef]);
  87. },
  88. get(superMember) {
  89. const objectRef = cloneNode(this.getObjectRef());
  90. return callExpression(this.file.addHelper("superPropGet"), [this.isDerivedConstructor ? sequenceExpression([thisExpression(), objectRef]) : objectRef, this.prop(superMember), thisExpression(), ...(this.isStatic || this.isPrivateMethod ? [] : [_core.types.numericLiteral(1)])]);
  91. },
  92. _call(superMember, args, optional) {
  93. const objectRef = cloneNode(this.getObjectRef());
  94. let argsNode;
  95. if (args.length === 1 && _core.types.isSpreadElement(args[0]) && (_core.types.isIdentifier(args[0].argument) || _core.types.isArrayExpression(args[0].argument))) {
  96. argsNode = args[0].argument;
  97. } else {
  98. argsNode = _core.types.arrayExpression(args);
  99. }
  100. const call = _core.types.callExpression(this.file.addHelper("superPropGet"), [this.isDerivedConstructor ? sequenceExpression([thisExpression(), objectRef]) : objectRef, this.prop(superMember), thisExpression(), _core.types.numericLiteral(2 | (this.isStatic || this.isPrivateMethod ? 0 : 1))]);
  101. if (optional) {
  102. return _core.types.optionalCallExpression(call, [argsNode], true);
  103. }
  104. return callExpression(call, [argsNode]);
  105. },
  106. set(superMember, value) {
  107. const objectRef = cloneNode(this.getObjectRef());
  108. return callExpression(this.file.addHelper("superPropSet"), [this.isDerivedConstructor ? sequenceExpression([thisExpression(), objectRef]) : objectRef, this.prop(superMember), value, thisExpression(), _core.types.numericLiteral(superMember.isInStrictMode() ? 1 : 0), ...(this.isStatic || this.isPrivateMethod ? [] : [_core.types.numericLiteral(1)])]);
  109. },
  110. destructureSet(superMember) {
  111. throw superMember.buildCodeFrameError(`Destructuring to a super field is not supported yet.`);
  112. },
  113. call(superMember, args) {
  114. return this._call(superMember, args, false);
  115. },
  116. optionalCall(superMember, args) {
  117. return this._call(superMember, args, true);
  118. },
  119. delete(superMember) {
  120. if (superMember.node.computed) {
  121. return sequenceExpression([callExpression(this.file.addHelper("toPropertyKey"), [cloneNode(superMember.node.property)]), _core.template.expression.ast`
  122. function () { throw new ReferenceError("'delete super[expr]' is invalid"); }()
  123. `]);
  124. } else {
  125. return _core.template.expression.ast`
  126. function () { throw new ReferenceError("'delete super.prop' is invalid"); }()
  127. `;
  128. }
  129. }
  130. };
  131. const specHandlers_old = {
  132. memoise(superMember, count) {
  133. const {
  134. scope,
  135. node
  136. } = superMember;
  137. const {
  138. computed,
  139. property
  140. } = node;
  141. if (!computed) {
  142. return;
  143. }
  144. const memo = scope.maybeGenerateMemoised(property);
  145. if (!memo) {
  146. return;
  147. }
  148. this.memoiser.set(property, memo, count);
  149. },
  150. prop(superMember) {
  151. const {
  152. computed,
  153. property
  154. } = superMember.node;
  155. if (this.memoiser.has(property)) {
  156. return cloneNode(this.memoiser.get(property));
  157. }
  158. if (computed) {
  159. return cloneNode(property);
  160. }
  161. return stringLiteral(property.name);
  162. },
  163. _getPrototypeOfExpression() {
  164. const objectRef = cloneNode(this.getObjectRef());
  165. const targetRef = this.isStatic || this.isPrivateMethod ? objectRef : memberExpression(objectRef, identifier("prototype"));
  166. return callExpression(this.file.addHelper("getPrototypeOf"), [targetRef]);
  167. },
  168. get(superMember) {
  169. return this._get(superMember);
  170. },
  171. _get(superMember) {
  172. const proto = this._getPrototypeOfExpression();
  173. return callExpression(this.file.addHelper("get"), [this.isDerivedConstructor ? sequenceExpression([thisExpression(), proto]) : proto, this.prop(superMember), thisExpression()]);
  174. },
  175. set(superMember, value) {
  176. const proto = this._getPrototypeOfExpression();
  177. return callExpression(this.file.addHelper("set"), [this.isDerivedConstructor ? sequenceExpression([thisExpression(), proto]) : proto, this.prop(superMember), value, thisExpression(), _core.types.booleanLiteral(superMember.isInStrictMode())]);
  178. },
  179. destructureSet(superMember) {
  180. throw superMember.buildCodeFrameError(`Destructuring to a super field is not supported yet.`);
  181. },
  182. call(superMember, args) {
  183. return (0, _helperOptimiseCallExpression.default)(this._get(superMember), thisExpression(), args, false);
  184. },
  185. optionalCall(superMember, args) {
  186. return (0, _helperOptimiseCallExpression.default)(this._get(superMember), cloneNode(thisExpression()), args, true);
  187. },
  188. delete(superMember) {
  189. if (superMember.node.computed) {
  190. return sequenceExpression([callExpression(this.file.addHelper("toPropertyKey"), [cloneNode(superMember.node.property)]), _core.template.expression.ast`
  191. function () { throw new ReferenceError("'delete super[expr]' is invalid"); }()
  192. `]);
  193. } else {
  194. return _core.template.expression.ast`
  195. function () { throw new ReferenceError("'delete super.prop' is invalid"); }()
  196. `;
  197. }
  198. }
  199. };
  200. const looseHandlers = Object.assign({}, specHandlers, {
  201. prop(superMember) {
  202. const {
  203. property
  204. } = superMember.node;
  205. if (this.memoiser.has(property)) {
  206. return cloneNode(this.memoiser.get(property));
  207. }
  208. return cloneNode(property);
  209. },
  210. get(superMember) {
  211. const {
  212. isStatic,
  213. getSuperRef
  214. } = this;
  215. const {
  216. computed
  217. } = superMember.node;
  218. const prop = this.prop(superMember);
  219. let object;
  220. if (isStatic) {
  221. var _getSuperRef;
  222. object = (_getSuperRef = getSuperRef()) != null ? _getSuperRef : memberExpression(identifier("Function"), identifier("prototype"));
  223. } else {
  224. var _getSuperRef2;
  225. object = memberExpression((_getSuperRef2 = getSuperRef()) != null ? _getSuperRef2 : identifier("Object"), identifier("prototype"));
  226. }
  227. return memberExpression(object, prop, computed);
  228. },
  229. set(superMember, value) {
  230. const {
  231. computed
  232. } = superMember.node;
  233. const prop = this.prop(superMember);
  234. return assignmentExpression("=", memberExpression(thisExpression(), prop, computed), value);
  235. },
  236. destructureSet(superMember) {
  237. const {
  238. computed
  239. } = superMember.node;
  240. const prop = this.prop(superMember);
  241. return memberExpression(thisExpression(), prop, computed);
  242. },
  243. call(superMember, args) {
  244. return (0, _helperOptimiseCallExpression.default)(this.get(superMember), thisExpression(), args, false);
  245. },
  246. optionalCall(superMember, args) {
  247. return (0, _helperOptimiseCallExpression.default)(this.get(superMember), thisExpression(), args, true);
  248. }
  249. });
  250. class ReplaceSupers {
  251. constructor(opts) {
  252. var _opts$constantSuper;
  253. const path = opts.methodPath;
  254. this.methodPath = path;
  255. this.isDerivedConstructor = path.isClassMethod({
  256. kind: "constructor"
  257. }) && !!opts.superRef;
  258. this.isStatic = path.isObjectMethod() || path.node.static || (path.isStaticBlock == null ? void 0 : path.isStaticBlock());
  259. this.isPrivateMethod = path.isPrivate() && path.isMethod();
  260. this.file = opts.file;
  261. this.constantSuper = (_opts$constantSuper = opts.constantSuper) != null ? _opts$constantSuper : opts.isLoose;
  262. this.opts = opts;
  263. }
  264. getObjectRef() {
  265. return cloneNode(this.opts.objectRef || this.opts.getObjectRef());
  266. }
  267. getSuperRef() {
  268. if (this.opts.superRef) return cloneNode(this.opts.superRef);
  269. if (this.opts.getSuperRef) {
  270. return cloneNode(this.opts.getSuperRef());
  271. }
  272. }
  273. replace() {
  274. const {
  275. methodPath
  276. } = this;
  277. if (this.opts.refToPreserve) {
  278. methodPath.traverse(unshadowSuperBindingVisitor, {
  279. refName: this.opts.refToPreserve.name
  280. });
  281. }
  282. const handler = this.constantSuper ? looseHandlers : this.file.availableHelper("superPropSet") ? specHandlers : specHandlers_old;
  283. visitor.shouldSkip = path => {
  284. if (path.parentPath === methodPath) {
  285. if (path.parentKey === "decorators" || path.parentKey === "key") {
  286. return true;
  287. }
  288. }
  289. };
  290. (0, _helperMemberExpressionToFunctions.default)(methodPath, visitor, Object.assign({
  291. file: this.file,
  292. scope: this.methodPath.scope,
  293. isDerivedConstructor: this.isDerivedConstructor,
  294. isStatic: this.isStatic,
  295. isPrivateMethod: this.isPrivateMethod,
  296. getObjectRef: this.getObjectRef.bind(this),
  297. getSuperRef: this.getSuperRef.bind(this),
  298. boundGet: handler.get
  299. }, handler));
  300. }
  301. }
  302. exports.default = ReplaceSupers;
  303. //# sourceMappingURL=index.js.map