Function getTypeFromArrayBindingPattern

test/fixtures/snapshot/typescript.js:56446–56463

(pattern, includePatternInType, reportErrors)

        }
        // Return the type implied by an array binding pattern
        function getTypeFromArrayBindingPattern(pattern, includePatternInType, reportErrors) {
            var elements = pattern.elements;
            var lastElement = ts.lastOrUndefined(elements);
            var restElement = lastElement && lastElement.kind === 203 /* SyntaxKind.BindingElement */ && lastElement.dotDotDotToken ? lastElement : undefined;
            if (elements.length === 0 || elements.length === 1 && restElement) {
                return languageVersion >= 2 /* ScriptTarget.ES2015 */ ? createIterableType(anyType) : anyArrayType;
            }
            var elementTypes = ts.map(elements, function (e) { return ts.isOmittedExpression(e) ? anyType : getTypeFromBindingElement(e, includePatternInType, reportErrors); });
            var minLength = ts.findLastIndex(elements, function (e) { return !(e === restElement || ts.isOmittedExpression(e) || hasDefaultValue(e)); }, elements.length - 1) + 1;
            var elementFlags = ts.map(elements, function (e, i) { return e === restElement ? 4 /* ElementFlags.Rest */ : i >= minLength ? 2 /* ElementFlags.Optional */ : 1 /* ElementFlags.Required */; });
            var result = createTupleType(elementTypes, elementFlags);
            if (includePatternInType) {
                result = cloneTypeReference(result);
                result.pattern = pattern;
                result.objectFlags |= 131072 /* ObjectFlags.ContainsObjectOrArrayLiteral */;
            }
            return result;
        }
        // Return the type implied by a binding pattern. This is the type implied purely by the binding pattern itself
        // and without regard to its context (i.e. without regard any type annotation or initializer associated with the
        // declaration in which the binding pattern is contained). For example, the implied type of [x, y] is [any, any]