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							- 'use strict';
 
- Object.defineProperty(exports, '__esModule', { value: true });
 
- var _t = require('@babel/types');
 
- function _interopNamespace(e) {
 
-   if (e && e.__esModule) return e;
 
-   var n = Object.create(null);
 
-   if (e) {
 
-     Object.keys(e).forEach(function (k) {
 
-       if (k !== 'default') {
 
-         var d = Object.getOwnPropertyDescriptor(e, k);
 
-         Object.defineProperty(n, k, d.get ? d : {
 
-           enumerable: true,
 
-           get: function () { return e[k]; }
 
-         });
 
-       }
 
-     });
 
-   }
 
-   n.default = e;
 
-   return Object.freeze(n);
 
- }
 
- var _t__namespace = /*#__PURE__*/_interopNamespace(_t);
 
- function willPathCastToBoolean(path) {
 
-   const maybeWrapped = path;
 
-   const {
 
-     node,
 
-     parentPath
 
-   } = maybeWrapped;
 
-   if (parentPath.isLogicalExpression()) {
 
-     const {
 
-       operator,
 
-       right
 
-     } = parentPath.node;
 
-     if (operator === "&&" || operator === "||" || operator === "??" && node === right) {
 
-       return willPathCastToBoolean(parentPath);
 
-     }
 
-   }
 
-   if (parentPath.isSequenceExpression()) {
 
-     const {
 
-       expressions
 
-     } = parentPath.node;
 
-     if (expressions[expressions.length - 1] === node) {
 
-       return willPathCastToBoolean(parentPath);
 
-     } else {
 
-       return true;
 
-     }
 
-   }
 
-   return parentPath.isConditional({
 
-     test: node
 
-   }) || parentPath.isUnaryExpression({
 
-     operator: "!"
 
-   }) || parentPath.isLoop({
 
-     test: node
 
-   });
 
- }
 
- const {
 
-   LOGICAL_OPERATORS,
 
-   arrowFunctionExpression,
 
-   assignmentExpression,
 
-   binaryExpression,
 
-   booleanLiteral,
 
-   callExpression,
 
-   cloneNode,
 
-   conditionalExpression,
 
-   identifier,
 
-   isMemberExpression,
 
-   isOptionalCallExpression,
 
-   isOptionalMemberExpression,
 
-   isUpdateExpression,
 
-   logicalExpression,
 
-   memberExpression,
 
-   nullLiteral,
 
-   optionalCallExpression,
 
-   optionalMemberExpression,
 
-   sequenceExpression,
 
-   updateExpression
 
- } = _t__namespace;
 
- class AssignmentMemoiser {
 
-   constructor() {
 
-     this._map = void 0;
 
-     this._map = new WeakMap();
 
-   }
 
-   has(key) {
 
-     return this._map.has(key);
 
-   }
 
-   get(key) {
 
-     if (!this.has(key)) return;
 
-     const record = this._map.get(key);
 
-     const {
 
-       value
 
-     } = record;
 
-     record.count--;
 
-     if (record.count === 0) {
 
-       return assignmentExpression("=", value, key);
 
-     }
 
-     return value;
 
-   }
 
-   set(key, value, count) {
 
-     return this._map.set(key, {
 
-       count,
 
-       value
 
-     });
 
-   }
 
- }
 
- function toNonOptional(path, base) {
 
-   const {
 
-     node
 
-   } = path;
 
-   if (isOptionalMemberExpression(node)) {
 
-     return memberExpression(base, node.property, node.computed);
 
-   }
 
-   if (path.isOptionalCallExpression()) {
 
-     const callee = path.get("callee");
 
-     if (path.node.optional && callee.isOptionalMemberExpression()) {
 
-       const object = callee.node.object;
 
-       const context = path.scope.maybeGenerateMemoised(object);
 
-       callee.get("object").replaceWith(assignmentExpression("=", context, object));
 
-       return callExpression(memberExpression(base, identifier("call")), [context, ...path.node.arguments]);
 
-     }
 
-     return callExpression(base, path.node.arguments);
 
-   }
 
-   return path.node;
 
- }
 
- function isInDetachedTree(path) {
 
-   while (path) {
 
-     if (path.isProgram()) break;
 
-     const {
 
-       parentPath,
 
-       container,
 
-       listKey
 
-     } = path;
 
-     const parentNode = parentPath.node;
 
-     if (listKey) {
 
-       if (container !== parentNode[listKey]) {
 
-         return true;
 
-       }
 
-     } else {
 
-       if (container !== parentNode) return true;
 
-     }
 
-     path = parentPath;
 
-   }
 
-   return false;
 
- }
 
- const handle = {
 
-   memoise() {},
 
-   handle(member, noDocumentAll) {
 
-     const {
 
-       node,
 
-       parent,
 
-       parentPath,
 
-       scope
 
-     } = member;
 
-     if (member.isOptionalMemberExpression()) {
 
-       if (isInDetachedTree(member)) return;
 
-       const endPath = member.find(({
 
-         node,
 
-         parent
 
-       }) => {
 
-         if (isOptionalMemberExpression(parent)) {
 
-           return parent.optional || parent.object !== node;
 
-         }
 
-         if (isOptionalCallExpression(parent)) {
 
-           return (node !== member.node && parent.optional || parent.callee !== node
 
-           );
 
-         }
 
-         return true;
 
-       });
 
-       if (scope.path.isPattern()) {
 
-         endPath.replaceWith(callExpression(arrowFunctionExpression([], endPath.node), []));
 
-         return;
 
-       }
 
-       const willEndPathCastToBoolean = willPathCastToBoolean(endPath);
 
-       const rootParentPath = endPath.parentPath;
 
-       if (rootParentPath.isUpdateExpression({
 
-         argument: node
 
-       })) {
 
-         throw member.buildCodeFrameError(`can't handle update expression`);
 
-       }
 
-       const isAssignment = rootParentPath.isAssignmentExpression({
 
-         left: endPath.node
 
-       });
 
-       const isDeleteOperation = rootParentPath.isUnaryExpression({
 
-         operator: "delete"
 
-       });
 
-       if (isDeleteOperation && endPath.isOptionalMemberExpression() && endPath.get("property").isPrivateName()) {
 
-         throw member.buildCodeFrameError(`can't delete a private class element`);
 
-       }
 
-       let startingOptional = member;
 
-       for (;;) {
 
-         if (startingOptional.isOptionalMemberExpression()) {
 
-           if (startingOptional.node.optional) break;
 
-           startingOptional = startingOptional.get("object");
 
-           continue;
 
-         } else if (startingOptional.isOptionalCallExpression()) {
 
-           if (startingOptional.node.optional) break;
 
-           startingOptional = startingOptional.get("callee");
 
-           continue;
 
-         }
 
-         throw new Error(`Internal error: unexpected ${startingOptional.node.type}`);
 
-       }
 
-       const startingNode = startingOptional.isOptionalMemberExpression() ? startingOptional.node.object : startingOptional.node.callee;
 
-       const baseNeedsMemoised = scope.maybeGenerateMemoised(startingNode);
 
-       const baseRef = baseNeedsMemoised != null ? baseNeedsMemoised : startingNode;
 
-       const parentIsOptionalCall = parentPath.isOptionalCallExpression({
 
-         callee: node
 
-       });
 
-       const isOptionalCall = parent => parentIsOptionalCall;
 
-       const parentIsCall = parentPath.isCallExpression({
 
-         callee: node
 
-       });
 
-       startingOptional.replaceWith(toNonOptional(startingOptional, baseRef));
 
-       if (isOptionalCall()) {
 
-         if (parent.optional) {
 
-           parentPath.replaceWith(this.optionalCall(member, parent.arguments));
 
-         } else {
 
-           parentPath.replaceWith(this.call(member, parent.arguments));
 
-         }
 
-       } else if (parentIsCall) {
 
-         member.replaceWith(this.boundGet(member));
 
-       } else if (this.delete && parentPath.isUnaryExpression({
 
-         operator: "delete"
 
-       })) {
 
-         parentPath.replaceWith(this.delete(member));
 
-       } else if (parentPath.isAssignmentExpression()) {
 
-         handleAssignment(this, member, parentPath);
 
-       } else {
 
-         member.replaceWith(this.get(member));
 
-       }
 
-       let regular = member.node;
 
-       for (let current = member; current !== endPath;) {
 
-         const parentPath = current.parentPath;
 
-         if (parentPath === endPath && isOptionalCall() && parent.optional) {
 
-           regular = parentPath.node;
 
-           break;
 
-         }
 
-         regular = toNonOptional(parentPath, regular);
 
-         current = parentPath;
 
-       }
 
-       let context;
 
-       const endParentPath = endPath.parentPath;
 
-       if (isMemberExpression(regular) && endParentPath.isOptionalCallExpression({
 
-         callee: endPath.node,
 
-         optional: true
 
-       })) {
 
-         const {
 
-           object
 
-         } = regular;
 
-         context = member.scope.maybeGenerateMemoised(object);
 
-         if (context) {
 
-           regular.object = assignmentExpression("=", context, object);
 
-         }
 
-       }
 
-       let replacementPath = endPath;
 
-       if (isDeleteOperation || isAssignment) {
 
-         replacementPath = endParentPath;
 
-         regular = endParentPath.node;
 
-       }
 
-       const baseMemoised = baseNeedsMemoised ? assignmentExpression("=", cloneNode(baseRef), cloneNode(startingNode)) : cloneNode(baseRef);
 
-       if (willEndPathCastToBoolean) {
 
-         let nonNullishCheck;
 
-         if (noDocumentAll) {
 
-           nonNullishCheck = binaryExpression("!=", baseMemoised, nullLiteral());
 
-         } else {
 
-           nonNullishCheck = logicalExpression("&&", binaryExpression("!==", baseMemoised, nullLiteral()), binaryExpression("!==", cloneNode(baseRef), scope.buildUndefinedNode()));
 
-         }
 
-         replacementPath.replaceWith(logicalExpression("&&", nonNullishCheck, regular));
 
-       } else {
 
-         let nullishCheck;
 
-         if (noDocumentAll) {
 
-           nullishCheck = binaryExpression("==", baseMemoised, nullLiteral());
 
-         } else {
 
-           nullishCheck = logicalExpression("||", binaryExpression("===", baseMemoised, nullLiteral()), binaryExpression("===", cloneNode(baseRef), scope.buildUndefinedNode()));
 
-         }
 
-         replacementPath.replaceWith(conditionalExpression(nullishCheck, isDeleteOperation ? booleanLiteral(true) : scope.buildUndefinedNode(), regular));
 
-       }
 
-       if (context) {
 
-         const endParent = endParentPath.node;
 
-         endParentPath.replaceWith(optionalCallExpression(optionalMemberExpression(endParent.callee, identifier("call"), false, true), [cloneNode(context), ...endParent.arguments], false));
 
-       }
 
-       return;
 
-     }
 
-     if (isUpdateExpression(parent, {
 
-       argument: node
 
-     })) {
 
-       if (this.simpleSet) {
 
-         member.replaceWith(this.simpleSet(member));
 
-         return;
 
-       }
 
-       const {
 
-         operator,
 
-         prefix
 
-       } = parent;
 
-       this.memoise(member, 2);
 
-       const ref = scope.generateUidIdentifierBasedOnNode(node);
 
-       scope.push({
 
-         id: ref
 
-       });
 
-       const seq = [assignmentExpression("=", cloneNode(ref), this.get(member))];
 
-       if (prefix) {
 
-         seq.push(updateExpression(operator, cloneNode(ref), prefix));
 
-         const value = sequenceExpression(seq);
 
-         parentPath.replaceWith(this.set(member, value));
 
-         return;
 
-       } else {
 
-         const ref2 = scope.generateUidIdentifierBasedOnNode(node);
 
-         scope.push({
 
-           id: ref2
 
-         });
 
-         seq.push(assignmentExpression("=", cloneNode(ref2), updateExpression(operator, cloneNode(ref), prefix)), cloneNode(ref));
 
-         const value = sequenceExpression(seq);
 
-         parentPath.replaceWith(sequenceExpression([this.set(member, value), cloneNode(ref2)]));
 
-         return;
 
-       }
 
-     }
 
-     if (parentPath.isAssignmentExpression({
 
-       left: node
 
-     })) {
 
-       handleAssignment(this, member, parentPath);
 
-       return;
 
-     }
 
-     if (parentPath.isCallExpression({
 
-       callee: node
 
-     })) {
 
-       parentPath.replaceWith(this.call(member, parentPath.node.arguments));
 
-       return;
 
-     }
 
-     if (parentPath.isOptionalCallExpression({
 
-       callee: node
 
-     })) {
 
-       if (scope.path.isPattern()) {
 
-         parentPath.replaceWith(callExpression(arrowFunctionExpression([], parentPath.node), []));
 
-         return;
 
-       }
 
-       parentPath.replaceWith(this.optionalCall(member, parentPath.node.arguments));
 
-       return;
 
-     }
 
-     if (this.delete && parentPath.isUnaryExpression({
 
-       operator: "delete"
 
-     })) {
 
-       parentPath.replaceWith(this.delete(member));
 
-       return;
 
-     }
 
-     if (parentPath.isForXStatement({
 
-       left: node
 
-     }) || parentPath.isObjectProperty({
 
-       value: node
 
-     }) && parentPath.parentPath.isObjectPattern() || parentPath.isAssignmentPattern({
 
-       left: node
 
-     }) && parentPath.parentPath.isObjectProperty({
 
-       value: parent
 
-     }) && parentPath.parentPath.parentPath.isObjectPattern() || parentPath.isArrayPattern() || parentPath.isAssignmentPattern({
 
-       left: node
 
-     }) && parentPath.parentPath.isArrayPattern() || parentPath.isRestElement()) {
 
-       member.replaceWith(this.destructureSet(member));
 
-       return;
 
-     }
 
-     if (parentPath.isTaggedTemplateExpression()) {
 
-       member.replaceWith(this.boundGet(member));
 
-     } else {
 
-       member.replaceWith(this.get(member));
 
-     }
 
-   }
 
- };
 
- function handleAssignment(state, member, parentPath) {
 
-   if (state.simpleSet) {
 
-     member.replaceWith(state.simpleSet(member));
 
-     return;
 
-   }
 
-   const {
 
-     operator,
 
-     right: value
 
-   } = parentPath.node;
 
-   if (operator === "=") {
 
-     parentPath.replaceWith(state.set(member, value));
 
-   } else {
 
-     const operatorTrunc = operator.slice(0, -1);
 
-     if (LOGICAL_OPERATORS.includes(operatorTrunc)) {
 
-       state.memoise(member, 1);
 
-       parentPath.replaceWith(logicalExpression(operatorTrunc, state.get(member), state.set(member, value)));
 
-     } else {
 
-       state.memoise(member, 2);
 
-       parentPath.replaceWith(state.set(member, binaryExpression(operatorTrunc, state.get(member), value)));
 
-     }
 
-   }
 
- }
 
- function memberExpressionToFunctions(path, visitor, state) {
 
-   path.traverse(visitor, Object.assign({}, handle, state, {
 
-     memoiser: new AssignmentMemoiser()
 
-   }));
 
- }
 
- exports.default = memberExpressionToFunctions;
 
- //# sourceMappingURL=index.js.map
 
 
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