Webpack Graphql compile error easy fix

tech 19 minutes read (About 2878 words)

Complilation reports lot of errors with your Webpack and GraphQL setup? You might not have Webpack setup correctly.

graphqlError

If you see errors like the example in this post below, the easiest fix is add .mjs to your Webpack config’s extension list before anything else.

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resolve: {
  extensions: ['.mjs', '.js', '.jsx', '.css', '.scss'],
    modules: [
      path.resolve(__dirname, 'src'),
      'node_modules',
    ],
},

Example errors you will be getting without .mjs in your Webpack config.

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Can't reexport the named export 'BREAK' from non EcmaScript module (only default export is available)
Can't reexport the named export 'BreakingChangeType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'DEFAULT_DEPRECATION_REASON' from non EcmaScript module (only default export is available)
Can't reexport the named export 'DangerousChangeType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'DirectiveLocation' from non EcmaScript module (only default export is available)
Can't reexport the named export 'FieldsOnCorrectTypeRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'FragmentsOnCompositeTypesRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLBoolean' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLDeprecatedDirective' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLDirective' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLEnumType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLError' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLFloat' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLID' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLIncludeDirective' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLInputObjectType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLInt' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLInterfaceType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLList' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLNonNull' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLObjectType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLScalarType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLSchema' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLSkipDirective' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLString' from non EcmaScript module (only default export is available)
Can't reexport the named export 'GraphQLUnionType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'Kind' from non EcmaScript module (only default export is available)
Can't reexport the named export 'KnownArgumentNamesRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'KnownDirectivesRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'KnownFragmentNamesRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'KnownTypeNamesRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'LoneAnonymousOperationRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'NoFragmentCyclesRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'NoUndefinedVariablesRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'NoUnusedFragmentsRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'NoUnusedVariablesRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'OverlappingFieldsCanBeMergedRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'PossibleFragmentSpreadsRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'ProvidedRequiredArgumentsRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'ScalarLeafsRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'SchemaMetaFieldDef' from non EcmaScript module (only default export is available)
Can't reexport the named export 'SingleFieldSubscriptionsRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'Source' from non EcmaScript module (only default export is available)
Can't reexport the named export 'TokenKind' from non EcmaScript module (only default export is available)
Can't reexport the named export 'TypeInfo' from non EcmaScript module (only default export is available)
Can't reexport the named export 'TypeKind' from non EcmaScript module (only default export is available)
Can't reexport the named export 'TypeMetaFieldDef' from non EcmaScript module (only default export is available)
Can't reexport the named export 'TypeNameMetaFieldDef' from non EcmaScript module (only default export is available)
Can't reexport the named export 'UniqueArgumentNamesRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'UniqueDirectivesPerLocationRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'UniqueFragmentNamesRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'UniqueInputFieldNamesRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'UniqueOperationNamesRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'UniqueVariableNamesRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'ValidationContext' from non EcmaScript module (only default export is available)
Can't reexport the named export 'ValuesOfCorrectTypeRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'VariablesAreInputTypesRule' from non EcmaScript module (only default export is available)
Can't reexport the named export 'VariablesInAllowedPositionRule' from non EcmaScript module (only default export is available)
Can't reexport the named export '__Directive' from non EcmaScript module (only default export is available)
Can't reexport the named export '__DirectiveLocation' from non EcmaScript module (only default export is available)
Can't reexport the named export '__EnumValue' from non EcmaScript module (only default export is available)
Can't reexport the named export '__Field' from non EcmaScript module (only default export is available)
Can't reexport the named export '__InputValue' from non EcmaScript module (only default export is available)
Can't reexport the named export '__Schema' from non EcmaScript module (only default export is available)
Can't reexport the named export '__Type' from non EcmaScript module (only default export is available)
Can't reexport the named export '__TypeKind' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertAbstractType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertCompositeType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertEnumType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertInputObjectType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertInputType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertInterfaceType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertLeafType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertListType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertNamedType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertNonNullType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertNullableType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertObjectType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertOutputType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertScalarType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertUnionType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertValidName' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertValidSchema' from non EcmaScript module (only default export is available)
Can't reexport the named export 'assertWrappingType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'astFromValue' from non EcmaScript module (only default export is available)
Can't reexport the named export 'buildASTSchema' from non EcmaScript module (only default export is available)
Can't reexport the named export 'buildClientSchema' from non EcmaScript module (only default export is available)
Can't reexport the named export 'buildSchema' from non EcmaScript module (only default export is available)
Can't reexport the named export 'coerceValue' from non EcmaScript module (only default export is available)
Can't reexport the named export 'concatAST' from non EcmaScript module (only default export is available)
Can't reexport the named export 'createSourceEventStream' from non EcmaScript module (only default export is available)
Can't reexport the named export 'defaultFieldResolver' from non EcmaScript module (only default export is available)
Can't reexport the named export 'doTypesOverlap' from non EcmaScript module (only default export is available)
Can't reexport the named export 'execute' from non EcmaScript module (only default export is available)
Can't reexport the named export 'extendSchema' from non EcmaScript module (only default export is available)
Can't reexport the named export 'findBreakingChanges' from non EcmaScript module (only default export is available)
Can't reexport the named export 'findDangerousChanges' from non EcmaScript module (only default export is available)
Can't reexport the named export 'findDeprecatedUsages' from non EcmaScript module (only default export is available)
Can't reexport the named export 'formatError' from non EcmaScript module (only default export is available)
Can't reexport the named export 'getDescription' from non EcmaScript module (only default export is available)
Can't reexport the named export 'getDirectiveValues' from non EcmaScript module (only default export is available)
Can't reexport the named export 'getIntrospectionQuery' from non EcmaScript module (only default export is available)
Can't reexport the named export 'getLocation' from non EcmaScript module (only default export is available)
Can't reexport the named export 'getNamedType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'getNullableType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'getOperationAST' from non EcmaScript module (only default export is available)
Can't reexport the named export 'getOperationRootType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'getVisitFn' from non EcmaScript module (only default export is available)
Can't reexport the named export 'graphql' from non EcmaScript module (only default export is available)
Can't reexport the named export 'graphqlSync' from non EcmaScript module (only default export is available)
Can't reexport the named export 'introspectionFromSchema' from non EcmaScript module (only default export is available)
Can't reexport the named export 'introspectionQuery' from non EcmaScript module (only default export is available)
Can't reexport the named export 'introspectionTypes' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isAbstractType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isCompositeType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isDefinitionNode' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isDirective' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isEnumType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isEqualType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isExecutableDefinitionNode' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isInputObjectType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isInputType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isInterfaceType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isIntrospectionType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isLeafType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isListType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isNamedType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isNonNullType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isNullableType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isObjectType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isOutputType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isRequiredArgument' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isRequiredInputField' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isScalarType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isSchema' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isSelectionNode' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isSpecifiedDirective' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isSpecifiedScalarType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isTypeDefinitionNode' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isTypeExtensionNode' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isTypeNode' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isTypeSubTypeOf' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isTypeSystemDefinitionNode' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isTypeSystemExtensionNode' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isUnionType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isValidJSValue' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isValidLiteralValue' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isValidNameError' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isValueNode' from non EcmaScript module (only default export is available)
Can't reexport the named export 'isWrappingType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'lexicographicSortSchema' from non EcmaScript module (only default export is available)
Can't reexport the named export 'parse' from non EcmaScript module (only default export is available)
Can't reexport the named export 'parseType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'parseValue' from non EcmaScript module (only default export is available)
Can't reexport the named export 'print' from non EcmaScript module (only default export is available)
Can't reexport the named export 'printError' from non EcmaScript module (only default export is available)
Can't reexport the named export 'printIntrospectionSchema' from non EcmaScript module (only default export is available)
Can't reexport the named export 'printSchema' from non EcmaScript module (only default export is available)
Can't reexport the named export 'printType' from non EcmaScript module (only default export is available)
Can't reexport the named export 'responsePathAsArray' from non EcmaScript module (only default export is available)
Can't reexport the named export 'separateOperations' from non EcmaScript module (only default export is available)
Can't reexport the named export 'specifiedDirectives' from non EcmaScript module (only default export is available)
Can't reexport the named export 'specifiedRules' from non EcmaScript module (only default export is available)
Can't reexport the named export 'specifiedScalarTypes' from non EcmaScript module (only default export is available)
Can't reexport the named export 'subscribe' from non EcmaScript module (only default export is available)
Can't reexport the named export 'typeFromAST' from non EcmaScript module (only default export is available)
Can't reexport the named export 'validate' from non EcmaScript module (only default export is available)
Can't reexport the named export 'validateSchema' from non EcmaScript module (only default export is available)
Can't reexport the named export 'valueFromAST' from non EcmaScript module (only default export is available)
Can't reexport the named export 'valueFromASTUntyped' from non EcmaScript module (only default export is available)
Can't reexport the named export 'visit' from non EcmaScript module (only default export is available)
Can't reexport the named export 'visitInParallel' from non EcmaScript module (only default export is available)
Can't reexport the named export 'visitWithTypeInfo' from non EcmaScript module (only default export is available)
#Webpack #GraphQL
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