[warning]/usr/local/lib/node_modules/yarn/lib/cli.js:46290 let { ^ SyntaxError: Unexpected token { at exports.runInThisContext (vm.js:53:16) at Module._compile (module.js:413:25) at Object.Module._extensions..js (module.js:452:10) at Module.load (module.js:355:32) at Function.Module._load (module.js:310:12) at Module.require (module.js:365:17) at require (module.js:384:17) at Object.<anonymous> (/usr/local/lib/node_modules/yarn/bin/yarn.js:24:13) at Module._compile (module.js:434:26) at Object.Module._extensions..js (module.js:452:10)