module.exports = { sourceMaps: true, presets: [ [ "@babel/preset-env", { targets: [ "last 2 Chrome versions", "last 2 Firefox versions", "last 2 Safari versions", "last 2 Edge versions", ], }, ], "@babel/preset-typescript", "@babel/preset-react", ], plugins: [ "@babel/plugin-proposal-export-default-from", "@babel/plugin-proposal-numeric-separator", "@babel/plugin-proposal-class-properties", "@babel/plugin-proposal-object-rest-spread", "@babel/plugin-proposal-optional-chaining", "@babel/plugin-proposal-nullish-coalescing-operator", // transform logical assignment (??=, ||=, &&=). preset-env doesn't // normally bother with these (presumably because all the target // browsers support it natively), but they make our webpack version (or // something downstream of babel, at least) fall over. "@babel/plugin-proposal-logical-assignment-operators", "@babel/plugin-syntax-dynamic-import", "@babel/plugin-transform-runtime", ], };