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18779

changelog_unreleased/flow/18779.md

3.9.0580 B
Original Source

Improve long mapped type to across multiple line (#18779 by @kovsu)

<!-- prettier-ignore -->
flow
// Input
type MappedType = {
  [KeyType in ValueType extends string ? VeryLongStringTypeNameHere : VeryLongNumberTypeNameHere]: KeyType
}

// Prettier stable
type MappedType = {
  [KeyType in ValueType extends string
      ? VeryLongStringTypeNameHere
      : VeryLongNumberTypeNameHere]: KeyType,
};

// Prettier main
type MappedType = {
  [
    KeyType in ValueType extends string
      ? VeryLongStringTypeNameHere
      : VeryLongNumberTypeNameHere
  ]: KeyType,
};