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JSException.swift
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34 lines (32 loc) · 1.15 KB
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/// `JSException` is a wrapper that handles exceptions thrown during JavaScript execution as Swift
/// `Error` objects.
/// When a JavaScript function throws an exception, it's wrapped as a `JSException` and propagated
/// through Swift's error handling mechanism.
///
/// Example:
/// ```swift
/// do {
/// try jsFunction.throws()
/// } catch let error as JSException {
/// // Access the value thrown from JavaScript
/// let jsErrorValue = error.thrownValue
/// }
/// ```
public struct JSException: Error, Equatable {
/// The value thrown from JavaScript.
/// This can be any JavaScript value (error object, string, number, etc.).
public var thrownValue: JSValue {
return _thrownValue
}
/// The actual JavaScript value that was thrown.
///
/// Marked as `nonisolated(unsafe)` to satisfy `Sendable` requirement
/// from `Error` protocol.
private nonisolated(unsafe) let _thrownValue: JSValue
/// Initializes a new JSException instance with a value thrown from JavaScript.
///
/// Only available within the package.
package init(_ thrownValue: JSValue) {
self._thrownValue = thrownValue
}
}