feat(missedPipeableOpportunity): configurable output style — pipe(x, …) vs x.pipe(…) #764

Summary

missedPipeableOpportunity only targets the method form x.pipe(a, b). Codebases whose house style is the standalone pipe(x, a, b) function form can't make this diagnostic emit their style — enabling it pushes code the opposite way, so they must leave it off and lose chain-enforcement entirely. Requesting an option to select output style.

Current behavior

packages/language-service/src/diagnostics/missedPipeableOpportunity.ts hardcodes the method form in both the message (~L235, `${subjectText}.pipe(...)`) and the fix (~L257):

const pipeNode = ts.factory.createCallExpression(
  ts.factory.createPropertyAccessExpression(pipeableSubjectNode, 'pipe'),
  undefined,
  pipeArgs,
)

Only pipeableMinArgCount is configurable; nothing controls method-vs-function.

Proposal

Add pipeableStyle: "method" | "data-first" (default "method" preserves today). When "data-first", emit pipe(subject, ...pipeArgs) — a sibling node, and pipe is already imported from effect/Function in this file. The repo already models this axis via the togglePipeStyle / pipeableToDatafirst refactors; this asks the diagnostic to honor it too.

Environment

@effect/tsgo@0.19.0, Effect v4 (4.0.0-beta.98).