Method resolveCached

packages/jest-runtime/src/internals/Resolution.ts:221–233

(
    from: string,
    to: string,
    cache: Map<string, string>,
    conditions: ReadonlyArray<string>,
  )

  }

  private resolveCached(
    from: string,
    to: string,
    cache: Map<string, string>,
    conditions: ReadonlyArray<string>,
  ): string {
    const key = `${from}\0${to}`;
    const cached = cache.get(key);
    if (cached !== undefined) return cached;
    const resolved = this.resolver.resolveModule(from, to, {conditions});
    cache.set(key, resolved);
    return resolved;
  }
}