"last 2 versions" considered harmful There comes a time in every developer's life when they come to realize their thoughtleaders misled them. Oh, we've really done it now. So remember how we told you all to use babel-preset-env? { "presets": [ ["env", { "targets": { "browsers": [ "last 2 versions" ] } }] ] } See browserlist coverage We told you to use it because it would only compile the things th