Function asNonEmptyStringArray

src/lib/form/types.ts:50–76

(
  schema: any,
)

}

export function asNonEmptyStringArray(
  schema: any,
): NonEmptyArray<string> | null {
  const arraySchema = asArraySchema(schema);

  if (!arraySchema) {
    return null;
  }

  // For TaskList: items is an object with a "name" property holding the enum
  const items = arraySchema.items as any;
  if (items?.type === "object" && items?.properties?.name?.enum) {
    const choices = items.properties.name.enum;
    if (isStringArray(choices) && choices.length > 0) {
      return choices as NonEmptyArray<string>;
    }
    return null;
  }

  const choices = arraySchema.items.enum;

  if (!isStringArray(choices) || choices.length === 0) {
    return null;
  }

  return choices as NonEmptyArray<string>;
}

const isStringArray = (arr: any): arr is string[] =>
  Array.isArray(arr) && arr.every((i) => typeof i === "string");