f0d4159a5e
In yargs 3.2, any non-truthy return value to check will fail: https://github.com/yargs/yargs/blob/master/CHANGELOG.md#302-20150213-1650-0000 It appears that this check is no longer necessary as the other contents of the check callback no longer exist: https://github.com/wycats/handlebars.js/commit/2e7a3bd70223c0e532a24290c7d817b951354541#diff-2aff13863648736946e83d70c5e63520L86 It appears the build failed for PR #1180, not sure why it was merged