Function getArgBindingName

test/fixtures/snapshot/typescript.js:151993–152039

(funcNode, transformer)

            return innerCbBody;
        }
        function getArgBindingName(funcNode, transformer) {
            var types = [];
            var name;
            if (ts.isFunctionLikeDeclaration(funcNode)) {
                if (funcNode.parameters.length > 0) {
                    var param = funcNode.parameters[0].name;
                    name = getMappedBindingNameOrDefault(param);
                }
            }
            else if (ts.isIdentifier(funcNode)) {
                name = getMapEntryOrDefault(funcNode);
            }
            else if (ts.isPropertyAccessExpression(funcNode) && ts.isIdentifier(funcNode.name)) {
                name = getMapEntryOrDefault(funcNode.name);
            }
            // return undefined argName when arg is null or undefined
            // eslint-disable-next-line no-in-operator
            if (!name || "identifier" in name && name.identifier.text === "undefined") {
                return undefined;
            }
            return name;
            function getMappedBindingNameOrDefault(bindingName) {
                if (ts.isIdentifier(bindingName))
                    return getMapEntryOrDefault(bindingName);
                var elements = ts.flatMap(bindingName.elements, function (element) {
                    if (ts.isOmittedExpression(element))
                        return [];
                    return [getMappedBindingNameOrDefault(element.name)];
                });
                return createSynthBindingPattern(bindingName, elements);
            }
            function getMapEntryOrDefault(identifier) {
                var originalNode = getOriginalNode(identifier);
                var symbol = getSymbol(originalNode);
                if (!symbol) {
                    return createSynthIdentifier(identifier, types);
                }
                var mapEntry = transformer.synthNamesMap.get(ts.getSymbolId(symbol).toString());
                return mapEntry || createSynthIdentifier(identifier, types);
            }
            function getSymbol(node) {
                return node.symbol ? node.symbol : transformer.checker.getSymbolAtLocation(node);
            }
            function getOriginalNode(node) {
                return node.original ? node.original : node;
            }
        }
        function isEmptyBindingName(bindingName) {
            if (!bindingName) {
                return true;