> As of Babel 7, even its parser accepts plugins. Does it really? Last time I looked into this, the "parser plugins" were all fake: single-line modules which s

> As of Babel 7, even its parser accepts plugins. Does it really? Last time I looked into this, the "parser plugins" were all fake: single-line modules which simply switched on hidden config flags in Babel to enable functionality already hard-coded into the core parser. Left a bad taste in my mouth that the developers weren't up-front about the true (non-)extensibility of the system.