Function flattenBindingOrAssignmentElement

test/fixtures/snapshot/typescript.js:91196–91227

* Flattens a BindingOrAssignmentElement into zero or more bindings or assignments. * * @param flattenContext Options used to control flattening. * @param element The element to flatten. * @param value The current RHS value to assign to the element. * @param location The loca

(flattenContext, element, value, location, skipInitializer)

     * for the element.
     */
    function flattenBindingOrAssignmentElement(flattenContext, element, value, location, skipInitializer) {
        var bindingTarget = ts.getTargetOfBindingOrAssignmentElement(element); // TODO: GH#18217
        if (!skipInitializer) {
            var initializer = ts.visitNode(ts.getInitializerOfBindingOrAssignmentElement(element), flattenContext.visitor, ts.isExpression);
            if (initializer) {
                // Combine value and initializer
                if (value) {
                    value = createDefaultValueCheck(flattenContext, value, initializer, location);
                    // If 'value' is not a simple expression, it could contain side-effecting code that should evaluate before an object or array binding pattern.
                    if (!ts.isSimpleInlineableExpression(initializer) && ts.isBindingOrAssignmentPattern(bindingTarget)) {
                        value = ensureIdentifier(flattenContext, value, /*reuseIdentifierExpressions*/ true, location);
                    }
                }
                else {
                    value = initializer;
                }
            }
            else if (!value) {
                // Use 'void 0' in absence of value and initializer
                value = flattenContext.context.factory.createVoidZero();
            }
        }
        if (ts.isObjectBindingOrAssignmentPattern(bindingTarget)) {
            flattenObjectBindingOrAssignmentPattern(flattenContext, element, bindingTarget, value, location);
        }
        else if (ts.isArrayBindingOrAssignmentPattern(bindingTarget)) {
            flattenArrayBindingOrAssignmentPattern(flattenContext, element, bindingTarget, value, location);
        }
        else {
            flattenContext.emitBindingOrAssignment(bindingTarget, value, location, /*original*/ element); // TODO: GH#18217
        }
    }
    /**
     * Flattens an ObjectBindingOrAssignmentPattern into zero or more bindings or assignments.
     *