Function visitObjectLiteralExpression

test/fixtures/snapshot/typescript.js:96733–96772

(node)

            return objects;
        }
        function visitObjectLiteralExpression(node) {
            if (node.transformFlags & 32768 /* TransformFlags.ContainsObjectRestOrSpread */) {
                // spread elements emit like so:
                // non-spread elements are chunked together into object literals, and then all are passed to __assign:
                //     { a, ...o, b } => __assign(__assign({a}, o), {b});
                // If the first element is a spread element, then the first argument to __assign is {}:
                //     { ...o, a, b, ...o2 } => __assign(__assign(__assign({}, o), {a, b}), o2)
                //
                // We cannot call __assign with more than two elements, since any element could cause side effects. For
                // example:
                //      var k = { a: 1, b: 2 };
                //      var o = { a: 3, ...k, b: k.a++ };
                //      // expected: { a: 1, b: 1 }
                // If we translate the above to `__assign({ a: 3 }, k, { b: k.a++ })`, the `k.a++` will evaluate before
                // `k` is spread and we end up with `{ a: 2, b: 1 }`.
                //
                // This also occurs for spread elements, not just property assignments:
                //      var k = { a: 1, get b() { l = { z: 9 }; return 2; } };
                //      var l = { c: 3 };
                //      var o = { ...k, ...l };
                //      // expected: { a: 1, b: 2, z: 9 }
                // If we translate the above to `__assign({}, k, l)`, the `l` will evaluate before `k` is spread and we
                // end up with `{ a: 1, b: 2, c: 3 }`
                var objects = chunkObjectLiteralElements(node.properties);
                if (objects.length && objects[0].kind !== 205 /* SyntaxKind.ObjectLiteralExpression */) {
                    objects.unshift(factory.createObjectLiteralExpression());
                }
                var expression = objects[0];
                if (objects.length > 1) {
                    for (var i = 1; i < objects.length; i++) {
                        expression = emitHelpers().createAssignHelper([expression, objects[i]]);
                    }
                    return expression;
                }
                else {
                    return emitHelpers().createAssignHelper(objects);
                }
            }
            return ts.visitEachChild(node, visitor, context);
        }
        function visitExpressionStatement(node) {
            return ts.visitEachChild(node, visitorWithUnusedExpressionResult, context);
        }