Function updateIndexSignature

test/fixtures/snapshot/typescript.js:23494–23501

(node, decorators, modifiers, parameters, type)

        }
        // @api
        function updateIndexSignature(node, decorators, modifiers, parameters, type) {
            return node.parameters !== parameters
                || node.type !== type
                || node.decorators !== decorators
                || node.modifiers !== modifiers
                ? updateBaseSignatureDeclaration(createIndexSignature(decorators, modifiers, parameters, type), node)
                : node;
        }
        // @api
        function createTemplateLiteralTypeSpan(type, literal) {
            var node = createBaseNode(199 /* SyntaxKind.TemplateLiteralTypeSpan */);