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GeezerVison is showing github.com — JavaScriptKit/Sources/JavaScriptKit/JSException.swift at main · rarestype/JavaScriptKit Expand file tree/ Copy pathJSException.swiftMore file actions 58 lines (53 loc) · 2.12 KB / Copy pathJSException.swiftFile metadata and controls58 lines (53 loc) · 2.12 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 /// `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, CustomStringConvertible { /// 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 /// A description of the exception. public let description: String /// The stack trace of the exception. public let stack: String? /// Initializes a new JSException instance with a value thrown from JavaScript. /// /// Only available within the package. This must be called on the thread where the exception object created. @usableFromInline package init(_ thrownValue: JSValue) { self._thrownValue = thrownValue // Capture the stringified representation on the object owner thread // to bring useful info to the catching thread even if they are different threads. if let errorObject = thrownValue.object, let stack = errorObject.stack.string { self.description = "JSException(\(stack))" self.stack = stack } else { self.description = "JSException(\(thrownValue))" self.stack = nil } } /// Initializes a new JavaScript `Error` instance with a message and prepare it to be thrown. /// /// - Parameters: /// - message: The message to throw. public init(message: String) { self.init(JSError(message: message).jsValue) } } |
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