**Prettier 1.19.1** [Playground link](https://prettier.io/playground/#N4Igxg9gdgLgprEAuEAKADAAgPQCpOQC2hCMmu2OuSmUAroQEZwBO52AlCADQgQAOMAJbQAzslABDFiwgB3AArSE4lJIBuEIQBMeIRi0lgA1nBgBlfkaFQA5shgs6cXgAsYhADYB1V0PiiVmBw5ir+Qur+AJ7I4KLivDairDAKhraEksgAZpKeybwAVqIAHgBChiZm5pIkADI2cDl5BSDFJeY2tp5wAIp0EPDN+S4gVizJLLHZnvJ6-Cw2MN46MK7IABzovAsQyd6G-LELcJPqTbwAjgPwaQKqIJKiALRQcHDaH3oscNdCP2lJBkskhciNeMlCEIHE5RqIuj1+oMmqCWqMYJJGCttGtkAAmXiOSRCTxdADCEGIIJAUGgFxAdGSABVMaowa11M4AJJQT6wcxgRaCACCvPMMCiPWGyQAvjKgA) ```sh --parser flow ``` **Input:** ```jsx (0 /* comment */ /*: number */) ``` **Output:** ```jsx (0 /*: /* comment */ number */); ``` **Second Output:** ```jsx SyntaxError: Unexpected token `*/`. Did you mean `*-/`? (1:19) > 1 | (0 /*: /* comment */ number */); | ^^ 2 | ``` Flow's [playground](https://flow.org/try/#0BQBgBA9AVGDGD2BbRBTAdgFzFCkoC4w0BXRAIxQCdsIBKIA)