Function areTypeParametersIdentical

test/fixtures/snapshot/typescript.js:84022–84061

(declarations, targetParameters, getTypeParameterDeclarations)

            }
        }
        function areTypeParametersIdentical(declarations, targetParameters, getTypeParameterDeclarations) {
            var maxTypeArgumentCount = ts.length(targetParameters);
            var minTypeArgumentCount = getMinTypeArgumentCount(targetParameters);
            for (var _i = 0, declarations_8 = declarations; _i < declarations_8.length; _i++) {
                var declaration = declarations_8[_i];
                // If this declaration has too few or too many type parameters, we report an error
                var sourceParameters = getTypeParameterDeclarations(declaration);
                var numTypeParameters = sourceParameters.length;
                if (numTypeParameters < minTypeArgumentCount || numTypeParameters > maxTypeArgumentCount) {
                    return false;
                }
                for (var i = 0; i < numTypeParameters; i++) {
                    var source = sourceParameters[i];
                    var target = targetParameters[i];
                    // If the type parameter node does not have the same as the resolved type
                    // parameter at this position, we report an error.
                    if (source.name.escapedText !== target.symbol.escapedName) {
                        return false;
                    }
                    // If the type parameter node does not have an identical constraint as the resolved
                    // type parameter at this position, we report an error.
                    var constraint = ts.getEffectiveConstraintOfTypeParameter(source);
                    var sourceConstraint = constraint && getTypeFromTypeNode(constraint);
                    var targetConstraint = getConstraintOfTypeParameter(target);
                    // relax check if later interface augmentation has no constraint, it's more broad and is OK to merge with
                    // a more constrained interface (this could be generalized to a full hierarchy check, but that's maybe overkill)
                    if (sourceConstraint && targetConstraint && !isTypeIdenticalTo(sourceConstraint, targetConstraint)) {
                        return false;
                    }
                    // If the type parameter node has a default and it is not identical to the default
                    // for the type parameter at this position, we report an error.
                    var sourceDefault = source.default && getTypeFromTypeNode(source.default);
                    var targetDefault = getDefaultFromTypeParameter(target);
                    if (sourceDefault && targetDefault && !isTypeIdenticalTo(sourceDefault, targetDefault)) {
                        return false;
                    }
                }
            }
            return true;
        }
        function checkClassExpression(node) {
            checkClassLikeDeclaration(node);
            checkNodeDeferred(node);