hypertune/src/shared/helpers/asError.ts

[Hypertune](https://www.hypertune.com/) is the most flexible platform for feature flags, A/B testing, analytics and app configuration. Built with full end-to-end type-safety, Git-style version control and local, synchronous, in-memory flag evaluation. Opt

export default function asError(value: unknown): Error {
  if (value instanceof Error) {
    return value;
  }

  if (typeof value === "string") {
    return new Error(value);
  }

  try {
    const stringified = JSON.stringify(value);
    if (typeof stringified !== "string") {
      // Can happen in some edge cases, e.g. JSON.stringify(() => {})
      return new Error("Error that stringified to non-string value.");
    }
    return new Error(stringified);
  } catch (error) {
    // Indicates value was non-stringifyable, e.g. recursive object, BigInt
    return new Error("Error that couldn't be stringified.");
  }
}