/// @module std::core::toml
/// TOML Parsing and Serialization
///
/// Parse TOML strings into Shape values and serialize Shape values
/// back to TOML format.
///
/// # Example
///
/// ```shape
/// use std::core::toml
///
/// let config = toml.parse("[server]\nhost = \"localhost\"\nport = 8080")
/// match config {
/// Ok(data) => print(data["server"]["host"])
/// Err(e) => print(f"Parse error: {e}")
/// }
/// ```
/// Parse a TOML string into Shape values.
///
/// # Arguments
///
/// * `text` - TOML string to parse
///
/// # Returns
///
/// `Ok(value)` with the parsed HashMap, or `Err(message)` on parse failure.
///
/// # Example
///
/// ```shape
/// let data = toml.parse("name = \"test\"\nversion = 42")
/// ```
pub builtin fn parse(text: string) -> Result<_, string>;
/// Serialize a Shape value to a TOML string.
///
/// # Arguments
///
/// * `value` - Value to serialize (typically a HashMap)
///
/// # Returns
///
/// `Ok(toml_string)` with the TOML output, or `Err(message)` on failure.
///
/// # Example
///
/// ```shape
/// let text = toml.stringify({ name: "test", version: 42 })
/// ```
pub builtin fn stringify(value: _) -> Result<string, string>;
/// Check if a string is valid TOML.
///
/// # Arguments
///
/// * `text` - String to validate as TOML
///
/// # Returns
///
/// `true` if the string is valid TOML, `false` otherwise.
///
/// # Example
///
/// ```shape
/// toml.is_valid("key = \"value\"") // true
/// toml.is_valid("= invalid") // false
/// ```
pub builtin fn is_valid(text: string) -> bool;