warning @11ty/eleventy > nunjucks > postinstall-build@5.0.3: postinstall-build's behavior is now built into npm! You should migrate off of postinstall-build and use the new prepare lifecycle script with npm 5.0.0 or greater.
As reported in 11ty/eleventy#311 by @AmeliaBR and clarified by @jevets.
As reported in 11ty/eleventy#311 by @AmeliaBR and clarified by @jevets.