Function constructor

packages/effect/src/Micro.ts:256–289

(
    readonly _tag: Tag,
    originalError: unknown,
    readonly traces: ReadonlyArray<string>
  )

    _E: Covariant<E>
  }
  constructor(
    readonly _tag: Tag,
    originalError: unknown,
    readonly traces: ReadonlyArray<string>
  ) {
    const causeName = `MicroCause.${_tag}`
    let name: string
    let message: string
    let stack: string
    if (originalError instanceof globalThis.Error) {
      name = `(${causeName}) ${originalError.name}`
      message = originalError.message as string
      const messageLines = message.split("\n").length
      stack = originalError.stack
        ? `(${causeName}) ${
          originalError.stack
            .split("\n")
            .slice(0, messageLines + 3)
            .join("\n")
        }`
        : `${name}: ${message}`
    } else {
      name = causeName
      message = toStringUnknown(originalError, 0)
      stack = `${name}: ${message}`
    }
    if (traces.length > 0) {
      stack += `\n    ${traces.join("\n    ")}`
    }
    super(message)
    this[MicroCauseTypeId] = microCauseVariance
    this.name = name
    this.stack = stack
  }
  pipe() {
    return pipeArguments(this, arguments)
  }