Function makeStackCleaner

packages/effect/src/internal/tracer.ts:28–40

(line: number)

/** @internal */
export const makeStackCleaner = (line: number) => (stack: () => string | undefined): () => string | undefined => {
  let cache: string | undefined
  return () => {
    if (cache !== undefined) return cache
    const trace = stack()
    if (!trace) return undefined
    const lines = trace.split("\n")
    if (lines[line] !== undefined) {
      cache = lines[line].trim()
      return cache
    }
  }
}

const spanCleaner = makeStackCleaner(3)