Function isThislessFunctionLikeDeclaration

test/fixtures/snapshot/typescript.js:57598–57604

* A function-like declaration is considered free of `this` references if it has a return type * annotation that is free of this references and if each parameter is thisless and if * each type parameter (if present) is thisless.

(node)

         * each type parameter (if present) is thisless.
         */
        function isThislessFunctionLikeDeclaration(node) {
            var returnType = ts.getEffectiveReturnTypeNode(node);
            var typeParameters = ts.getEffectiveTypeParameterDeclarations(node);
            return (node.kind === 171 /* SyntaxKind.Constructor */ || (!!returnType && isThislessType(returnType))) &&
                node.parameters.every(isThislessVariableLikeDeclaration) &&
                typeParameters.every(isThislessTypeParameter);
        }
        /**
         * Returns true if the class or interface member given by the symbol is free of "this" references. The
         * function may return false for symbols that are actually free of "this" references because it is not