protoc returned a line we do not understand{"protocLine": "DONE"}

[nmnellis]

Plugin https://github.com/stephenh/ts-proto https://github.com/stephenh/ts-proto/blob/d17aa2d88722e574fcdc944ce2d1aa03a3a00f64/src/plugin.ts#L32

2020-04-20T16:12:39.617Z        WARN    protoc returned a line we do not understand, please file this as an issue at https://github.com/uber/prototool/issues/new       {"protocLine": "DONE"}