Warning: The 'this' keyword is equivalent to 'undefined' at the top level of an ES module, and has been rewritten https://github.com/rollup/rollup/wiki/Troubleshooting#this-is-undefined node_modules/whatwg-fetch/fetch.js (463:40) 461: } 462: self.fetch.polyfill = true 463: })(typeof self !== 'undefined' ? self : this); ^ Warning: 'http' is imported by node_modules/axios/lib/adapters/http.js, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'https' is imported by node_modules/axios/lib/adapters/http.js, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'url' is imported by node_modules/follow-redirects/index.js, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'assert' is imported by node_modules/follow-redirects/index.js, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'http' is imported by node_modules/follow-redirects/index.js, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'https' is imported by node_modules/follow-redirects/index.js, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'stream' is imported by node_modules/follow-redirects/index.js, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'tty' is imported by node_modules/debug/src/node.js, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'util' is imported by node_modules/debug/src/node.js, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'fs' is imported by node_modules/debug/src/node.js, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'net' is imported by node_modules/debug/src/node.js, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'tty' is imported by commonjs-external:tty, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'util' is imported by commonjs-external:util, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'fs' is imported by commonjs-external:fs, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'net' is imported by commonjs-external:net, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'url' is imported by commonjs-external:url, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'assert' is imported by commonjs-external:assert, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'http' is imported by commonjs-external:http, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'https' is imported by commonjs-external:https, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'stream' is imported by commonjs-external:stream, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'url' is imported by node_modules/axios/lib/adapters/http.js, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Warning: 'zlib' is imported by node_modules/axios/lib/adapters/http.js, but could not be resolved – treating it as an external dependency https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency Error: (buble plugin) Unexpected token (2:8) undefined (2:8) Fatal error: local() encountered an error (return code 1) while executing 'rollup -c rollup.config.js' Aborting.