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FilterStorageHelper.getSessionStorage() method

Gets a value from sessionStorage with type-safe JSON parsing.

Retrieves and parses a JSON value from sessionStorage. Returns the fallback value if storage is unavailable, key doesn't exist, or JSON parsing fails.

Signature:

getSessionStorage<T>(key: string, fallback: T): T;

Parameters

Returns:

T

The parsed value of type T, or fallback

Remarks

Parsing errors are silently caught and return the fallback. This ensures graceful degradation when storage contains corrupted or invalid JSON.

Example

Override to add validation:

getSessionStorage<T>(key, fallback) {
  const value = super.getSessionStorage(key, fallback);
  // Validate against schema
  if (!this.validateSchema(key, value)) {
    console.warn(`Invalid schema for ${key}, using fallback`);
    return fallback;
  }
  return value;
}