настройка webpack

node_modules/@babel/plugin-proposal-optional-chaining/lib/index.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _helperPluginUtils = require("@babel/helper-plugin-utils");
+
+var _pluginSyntaxOptionalChaining = _interopRequireDefault(require("@babel/plugin-syntax-optional-chaining"));
+
+var _core = require("@babel/core");
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+var _default = (0, _helperPluginUtils.declare)((api, options) => {
+  api.assertVersion(7);
+  const {
+    loose = false
+  } = options;
+
+  function isSimpleMemberExpression(expression) {
+    return _core.types.isIdentifier(expression) || _core.types.isSuper(expression) || _core.types.isMemberExpression(expression) && !expression.computed && isSimpleMemberExpression(expression.object);
+  }
+
+  return {
+    name: "proposal-optional-chaining",
+    inherits: _pluginSyntaxOptionalChaining.default,
+    visitor: {
+      "OptionalCallExpression|OptionalMemberExpression"(path) {
+        const {
+          scope
+        } = path;
+        let maybeParenthesized = path;
+        const parentPath = path.findParent(p => {
+          if (!p.isParenthesizedExpression()) return true;
+          maybeParenthesized = p;
+        });
+        let isDeleteOperation = false;
+        const parentIsCall = parentPath.isCallExpression({
+          callee: maybeParenthesized.node
+        }) && path.isOptionalMemberExpression();
+        const optionals = [];
+        let optionalPath = path;
+
+        while (optionalPath.isOptionalMemberExpression() || optionalPath.isOptionalCallExpression() || optionalPath.isParenthesizedExpression() || optionalPath.isTSNonNullExpression()) {
+          const {
+            node
+          } = optionalPath;
+
+          if (node.optional) {
+            optionals.push(node);
+          }
+
+          if (optionalPath.isOptionalMemberExpression()) {
+            optionalPath.node.type = "MemberExpression";
+            optionalPath = optionalPath.get("object");
+          } else if (optionalPath.isOptionalCallExpression()) {
+            optionalPath.node.type = "CallExpression";
+            optionalPath = optionalPath.get("callee");
+          } else {
+            optionalPath = optionalPath.get("expression");
+          }
+        }
+
+        let replacementPath = path;
+
+        if (parentPath.isUnaryExpression({
+          operator: "delete"
+        })) {
+          replacementPath = parentPath;
+          isDeleteOperation = true;
+        }
+
+        for (let i = optionals.length - 1; i >= 0; i--) {
+          const node = optionals[i];
+
+          const isCall = _core.types.isCallExpression(node);
+
+          const replaceKey = isCall ? "callee" : "object";
+          const chain = node[replaceKey];
+          let ref;
+          let check;
+
+          if (loose && isCall && isSimpleMemberExpression(chain)) {
+            check = ref = chain;
+          } else {
+            ref = scope.maybeGenerateMemoised(chain);
+
+            if (ref) {
+              check = _core.types.assignmentExpression("=", _core.types.cloneNode(ref), chain);
+              node[replaceKey] = ref;
+            } else {
+              check = ref = chain;
+            }
+          }
+
+          if (isCall && _core.types.isMemberExpression(chain)) {
+            if (loose && isSimpleMemberExpression(chain)) {
+              node.callee = chain;
+            } else {
+              const {
+                object
+              } = chain;
+              let context = scope.maybeGenerateMemoised(object);
+
+              if (context) {
+                chain.object = _core.types.assignmentExpression("=", context, object);
+              } else if (_core.types.isSuper(object)) {
+                context = _core.types.thisExpression();
+              } else {
+                context = object;
+              }
+
+              node.arguments.unshift(_core.types.cloneNode(context));
+              node.callee = _core.types.memberExpression(node.callee, _core.types.identifier("call"));
+            }
+          }
+
+          let replacement = replacementPath.node;
+
+          if (i === 0 && parentIsCall) {
+            var _baseRef;
+
+            const {
+              object
+            } = replacement;
+            let baseRef;
+
+            if (!loose || !isSimpleMemberExpression(object)) {
+              baseRef = scope.maybeGenerateMemoised(object);
+
+              if (baseRef) {
+                replacement.object = _core.types.assignmentExpression("=", baseRef, object);
+              }
+            }
+
+            replacement = _core.types.callExpression(_core.types.memberExpression(replacement, _core.types.identifier("bind")), [_core.types.cloneNode((_baseRef = baseRef) != null ? _baseRef : object)]);
+          }
+
+          replacementPath.replaceWith(_core.types.conditionalExpression(loose ? _core.types.binaryExpression("==", _core.types.cloneNode(check), _core.types.nullLiteral()) : _core.types.logicalExpression("||", _core.types.binaryExpression("===", _core.types.cloneNode(check), _core.types.nullLiteral()), _core.types.binaryExpression("===", _core.types.cloneNode(ref), scope.buildUndefinedNode())), isDeleteOperation ? _core.types.booleanLiteral(true) : scope.buildUndefinedNode(), replacement));
+          replacementPath = replacementPath.get("alternate");
+        }
+      }
+
+    }
+  };
+});
+
+exports.default = _default;