- work around bug in ts-add-js-extension ([#1105](https://github.com/snabbdom/snabbdom/issues/1105)) ([649c760](https://github.com/snabbdom/snabbdom/commit/649c760f79a00a1a484a6258d74b27adcfcf69d0)), closes [#1087](https://github.com/snabbdom/snabbdom/issues/1087) [#1102](https://github.com/snabbdom/snabbdom/issues/1102)