0.2.0 - Mid migration

web/node_modules/@babel/helper-replace-supers/lib/index.js

@@ -0,0 +1,279 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.skipAllButComputedKey = skipAllButComputedKey;
+exports.default = exports.environmentVisitor = void 0;
+
+var _traverse = require("@babel/traverse");
+
+var _helperMemberExpressionToFunctions = require("@babel/helper-member-expression-to-functions");
+
+var _helperOptimiseCallExpression = require("@babel/helper-optimise-call-expression");
+
+var t = require("@babel/types");
+
+function getPrototypeOfExpression(objectRef, isStatic, file, isPrivateMethod) {
+  objectRef = t.cloneNode(objectRef);
+  const targetRef = isStatic || isPrivateMethod ? objectRef : t.memberExpression(objectRef, t.identifier("prototype"));
+  return t.callExpression(file.addHelper("getPrototypeOf"), [targetRef]);
+}
+
+function skipAllButComputedKey(path) {
+  if (!path.node.computed) {
+    path.skip();
+    return;
+  }
+
+  const keys = t.VISITOR_KEYS[path.type];
+
+  for (const key of keys) {
+    if (key !== "key") path.skipKey(key);
+  }
+}
+
+const environmentVisitor = {
+  [`${t.staticBlock ? "StaticBlock|" : ""}ClassPrivateProperty|TypeAnnotation`](path) {
+    path.skip();
+  },
+
+  Function(path) {
+    if (path.isMethod()) return;
+    if (path.isArrowFunctionExpression()) return;
+    path.skip();
+  },
+
+  "Method|ClassProperty"(path) {
+    skipAllButComputedKey(path);
+  }
+
+};
+exports.environmentVisitor = environmentVisitor;
+
+const visitor = _traverse.default.visitors.merge([environmentVisitor, {
+  Super(path, state) {
+    const {
+      node,
+      parentPath
+    } = path;
+    if (!parentPath.isMemberExpression({
+      object: node
+    })) return;
+    state.handle(parentPath);
+  }
+
+}]);
+
+const unshadowSuperBindingVisitor = _traverse.default.visitors.merge([environmentVisitor, {
+  Scopable(path, {
+    refName
+  }) {
+    const binding = path.scope.getOwnBinding(refName);
+
+    if (binding && binding.identifier.name === refName) {
+      path.scope.rename(refName);
+    }
+  }
+
+}]);
+
+const specHandlers = {
+  memoise(superMember, count) {
+    const {
+      scope,
+      node
+    } = superMember;
+    const {
+      computed,
+      property
+    } = node;
+
+    if (!computed) {
+      return;
+    }
+
+    const memo = scope.maybeGenerateMemoised(property);
+
+    if (!memo) {
+      return;
+    }
+
+    this.memoiser.set(property, memo, count);
+  },
+
+  prop(superMember) {
+    const {
+      computed,
+      property
+    } = superMember.node;
+
+    if (this.memoiser.has(property)) {
+      return t.cloneNode(this.memoiser.get(property));
+    }
+
+    if (computed) {
+      return t.cloneNode(property);
+    }
+
+    return t.stringLiteral(property.name);
+  },
+
+  get(superMember) {
+    return this._get(superMember, this._getThisRefs());
+  },
+
+  _get(superMember, thisRefs) {
+    const proto = getPrototypeOfExpression(this.getObjectRef(), this.isStatic, this.file, this.isPrivateMethod);
+    return t.callExpression(this.file.addHelper("get"), [thisRefs.memo ? t.sequenceExpression([thisRefs.memo, proto]) : proto, this.prop(superMember), thisRefs.this]);
+  },
+
+  _getThisRefs() {
+    if (!this.isDerivedConstructor) {
+      return {
+        this: t.thisExpression()
+      };
+    }
+
+    const thisRef = this.scope.generateDeclaredUidIdentifier("thisSuper");
+    return {
+      memo: t.assignmentExpression("=", thisRef, t.thisExpression()),
+      this: t.cloneNode(thisRef)
+    };
+  },
+
+  set(superMember, value) {
+    const thisRefs = this._getThisRefs();
+
+    const proto = getPrototypeOfExpression(this.getObjectRef(), this.isStatic, this.file, this.isPrivateMethod);
+    return t.callExpression(this.file.addHelper("set"), [thisRefs.memo ? t.sequenceExpression([thisRefs.memo, proto]) : proto, this.prop(superMember), value, thisRefs.this, t.booleanLiteral(superMember.isInStrictMode())]);
+  },
+
+  destructureSet(superMember) {
+    throw superMember.buildCodeFrameError(`Destructuring to a super field is not supported yet.`);
+  },
+
+  call(superMember, args) {
+    const thisRefs = this._getThisRefs();
+
+    return (0, _helperOptimiseCallExpression.default)(this._get(superMember, thisRefs), t.cloneNode(thisRefs.this), args, false);
+  },
+
+  optionalCall(superMember, args) {
+    const thisRefs = this._getThisRefs();
+
+    return (0, _helperOptimiseCallExpression.default)(this._get(superMember, thisRefs), t.cloneNode(thisRefs.this), args, true);
+  }
+
+};
+const looseHandlers = Object.assign({}, specHandlers, {
+  prop(superMember) {
+    const {
+      property
+    } = superMember.node;
+
+    if (this.memoiser.has(property)) {
+      return t.cloneNode(this.memoiser.get(property));
+    }
+
+    return t.cloneNode(property);
+  },
+
+  get(superMember) {
+    const {
+      isStatic,
+      getSuperRef
+    } = this;
+    const {
+      computed
+    } = superMember.node;
+    const prop = this.prop(superMember);
+    let object;
+
+    if (isStatic) {
+      var _getSuperRef;
+
+      object = (_getSuperRef = getSuperRef()) != null ? _getSuperRef : t.memberExpression(t.identifier("Function"), t.identifier("prototype"));
+    } else {
+      var _getSuperRef2;
+
+      object = t.memberExpression((_getSuperRef2 = getSuperRef()) != null ? _getSuperRef2 : t.identifier("Object"), t.identifier("prototype"));
+    }
+
+    return t.memberExpression(object, prop, computed);
+  },
+
+  set(superMember, value) {
+    const {
+      computed
+    } = superMember.node;
+    const prop = this.prop(superMember);
+    return t.assignmentExpression("=", t.memberExpression(t.thisExpression(), prop, computed), value);
+  },
+
+  destructureSet(superMember) {
+    const {
+      computed
+    } = superMember.node;
+    const prop = this.prop(superMember);
+    return t.memberExpression(t.thisExpression(), prop, computed);
+  },
+
+  call(superMember, args) {
+    return (0, _helperOptimiseCallExpression.default)(this.get(superMember), t.thisExpression(), args, false);
+  },
+
+  optionalCall(superMember, args) {
+    return (0, _helperOptimiseCallExpression.default)(this.get(superMember), t.thisExpression(), args, true);
+  }
+
+});
+
+class ReplaceSupers {
+  constructor(opts) {
+    var _opts$constantSuper;
+
+    const path = opts.methodPath;
+    this.methodPath = path;
+    this.isDerivedConstructor = path.isClassMethod({
+      kind: "constructor"
+    }) && !!opts.superRef;
+    this.isStatic = path.isObjectMethod() || path.node.static || (path.isStaticBlock == null ? void 0 : path.isStaticBlock());
+    this.isPrivateMethod = path.isPrivate() && path.isMethod();
+    this.file = opts.file;
+    this.constantSuper = (_opts$constantSuper = opts.constantSuper) != null ? _opts$constantSuper : opts.isLoose;
+    this.opts = opts;
+  }
+
+  getObjectRef() {
+    return t.cloneNode(this.opts.objectRef || this.opts.getObjectRef());
+  }
+
+  getSuperRef() {
+    if (this.opts.superRef) return t.cloneNode(this.opts.superRef);
+    if (this.opts.getSuperRef) return t.cloneNode(this.opts.getSuperRef());
+  }
+
+  replace() {
+    if (this.opts.refToPreserve) {
+      this.methodPath.traverse(unshadowSuperBindingVisitor, {
+        refName: this.opts.refToPreserve.name
+      });
+    }
+
+    const handler = this.constantSuper ? looseHandlers : specHandlers;
+    (0, _helperMemberExpressionToFunctions.default)(this.methodPath, visitor, Object.assign({
+      file: this.file,
+      scope: this.methodPath.scope,
+      isDerivedConstructor: this.isDerivedConstructor,
+      isStatic: this.isStatic,
+      isPrivateMethod: this.isPrivateMethod,
+      getObjectRef: this.getObjectRef.bind(this),
+      getSuperRef: this.getSuperRef.bind(this),
+      boundGet: handler.get
+    }, handler));
+  }
+
+}
+
+exports.default = ReplaceSupers;