**Prettier 2.1.2** [Playground link](https://prettier.io/playground/#N4Igxg9gdgLgprEAuEBDAvAbQDQHpdgA6UAuiNiBAA4wCW0AzsqKgE6sQDuACmwkylQAbTqgCeTCgCNWqMAGs4MAMpU5tKAHNkMVgFc4FOAFspcACbmLAGVRa9qTXABiEVsdQw6W5Gj0wIchAACxhjIQB1YNp4BjUwOGV+GNoANxixXzAGSRANBjhWGG5ZTQ9kADNhAooAKwYADwAhWQUlZVRjOGsNOErqwxB6huUNTSE4AEU9CHh+oRqQNVYC1l8pVDMhIKpWDRgI2nMYYOQADgAGCl2IAojZKl9duFXUvooARxn4EuoBNAYAFooHALBYgqw4F9aJCSo5ykgqgtBgVjLQdPoUWMJtNZn1EQMKDBNodjqckAAmImyWhCMYAYQgxgRIBeAFYgnoCgAVTYCJGLVIGACSUCssGUYD2NAAgmLlDAxBN5gUAL6qoA) ```sh --parser babel ``` **Input:** ```jsx a=[,//c ] ``` **Output:** ```jsx a = [,//c]; ``` Related: #1013