[client-preset] allowed options and defaults

This issue is the place to discuss allowed options and default values when using the preset: 'client' setup.

Currently supported options

• scalars
• strictScalars
• namingConvention
• useTypeImports
• skipTypename
• enumsAsTypes
• arrayInputCoercion
• presetConfig.fragmentMasking
• presetConfig.gqlTagName
• presetConfig.unmaskFunctionName
• emitLegacyCommonJSImports

Requested options support

• nonOptionalTypename https://github.com/dotansimha/graphql-code-generator/pull/8702 - Request
• immutableTypes https://github.com/dotansimha/graphql-code-generator/pull/10459 - Request

Current defaults

• presetConfig.fragmentMasking: true
• inlineFragmentTypes: true (if fragment masking is enabled)
• emitLegacyCommonJSImports: true
• inputMaybeValue: T | null | undefined

Requested defaults

• ignoreNoDocuments: true (@charlypoly)
• should presetConfig.fragmentMasking be false by default? (@charlypoly)
• dedupeFragments: true (https://github.com/dotansimha/graphql-code-generator/issues/8103#issuecomment-1298692748)
• enumsAsTypes: true (@n1ru4l)