Function firstNonBlank

packages/agent-core/src/utils/proxy.ts:41–47

First non-blank value among `keys` (both casings are passed in by callers).

(env: Env, keys: readonly string[])

/** First non-blank value among `keys` (both casings are passed in by callers). */
function firstNonBlank(env: Env, keys: readonly string[]): string | undefined {
  for (const key of keys) {
    const value = env[key]?.trim();
    if (value !== undefined && value.length > 0) return value;
  }
  return undefined;
}

/** The value if it is an HTTP/HTTPS-scheme proxy (not SOCKS), else undefined. */
function httpSchemeValue(value: string | undefined): string | undefined {