Add Stream.filterMapEffectOption combinator

[lucas-barake]

Type

• Feature

Description

Added Stream.filterMapEffectOption combinator for effectful filtering and mapping in a single step. This utility combines filtering and mapping operations with effects into a single operation that returns an Option, improving ergonomics when you need to conditionally transform stream elements with effects.

Example usage:

Stream.make(1, 2, 3, 4).pipe(
  Stream.filterMapEffectOption((n) =>
    Effect.succeed(
      n % 2 === 0 ? Option.some(n * 2) : Option.none()
    )
  )
)
// Results in: Stream(4, 8)

Notes

• I've left the @since tag version empty as I'm not sure which version to use. Would appreciate guidance on this.
• This feature was requested in this Discord discussion

Related

• Related Issue # N/A
• Closes # N/A

[changeset-bot]

🦋 Changeset detected

Latest commit: f17d13c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 32 packages

Name	Type
effect	Minor
@effect/cli	Major
@effect/cluster	Major
@effect/experimental	Major
@effect/opentelemetry	Major
@effect/platform-browser	Major
@effect/platform-bun	Major
@effect/platform-node-shared	Major
@effect/platform-node	Major
@effect/platform	Major
@effect/printer-ansi	Major
@effect/printer	Major
@effect/rpc	Major
@effect/sql-clickhouse	Major
@effect/sql-d1	Major
@effect/sql-drizzle	Major
@effect/sql-kysely	Major
@effect/sql-libsql	Major
@effect/sql-mssql	Major
@effect/sql-mysql2	Major
@effect/sql-pg	Major
@effect/sql-sqlite-bun	Major
@effect/sql-sqlite-do	Major
@effect/sql-sqlite-node	Major
@effect/sql-sqlite-react-native	Major
@effect/sql-sqlite-wasm	Major
@effect/sql	Major
@effect/typeclass	Major
@effect/vitest	Major
@effect/ai	Major
@effect/ai-anthropic	Major
@effect/ai-openai	Major

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