class MiniHttpError
class MiniHttpError extends Error {
constructor(status: number, message: string): MiniHttpError;
cause?: unknown;
message: string;
name: string;
stack?: string;
readonly status: number;
stackTraceLimit: number;
captureStackTrace(targetObject: object, constructorOpt?: Function): void;
captureStackTrace(targetObject: object, constructorOpt?: Function): void;
isError(error: unknown): error;
isError(value: unknown): value;
prepareStackTrace(err: Error, stackTraces: CallSite[]): any;
}Error type used by MiniFW to represent HTTP errors.
constructor constructor
constructor(status: number, message: string): MiniHttpErrorproperty cause
The cause of the error.
unknownproperty message
stringproperty name
stringproperty stack
stringproperty status
numberproperty stackTraceLimit
The Error.stackTraceLimit property specifies the number of stack frames collected by a stack trace (whether generated by new Error().stack or Error.captureStackTrace(obj)).
The default value is 10 but may be set to any valid JavaScript number. Changes will affect any stack trace captured after the value has been changed.
If set to a non-number value, or set to a negative number, stack traces will not capture any frames.
numbermethod captureStackTrace
captureStackTrace(targetObject: object, constructorOpt?: Function): voidCreates a .stack property on targetObject, which when accessed returns a string representing the location in the code at which Error.captureStackTrace() was called.
const myObject = {};
Error.captureStackTrace(myObject);
myObject.stack; // Similar to `new Error().stack`
The first line of the trace will be prefixed with ${myObject.name}: ${myObject.message}.
The optional constructorOpt argument accepts a function. If given, all frames above constructorOpt, including constructorOpt, will be omitted from the generated stack trace.
The constructorOpt argument is useful for hiding implementation details of error generation from the user. For instance:
function a() {
b();
}
function b() {
c();
}
function c() {
// Create an error without stack trace to avoid calculating the stack trace twice.
const { stackTraceLimit } = Error;
Error.stackTraceLimit = 0;
const error = new Error();
Error.stackTraceLimit = stackTraceLimit;
// Capture the stack trace above function b
Error.captureStackTrace(error, b); // Neither function c, nor b is included in the stack trace
throw error;
}
a();
captureStackTrace(targetObject: object, constructorOpt?: Function): voidCreate .stack property on a target object
method isError
isError(error: unknown): errorIndicates whether the argument provided is a built-in Error instance or not.
isError(value: unknown): valueCheck if a value is an instance of Error
valueThe value to check
True if the value is an instance of Error, false otherwise
method prepareStackTrace
prepareStackTrace(err: Error, stackTraces: CallSite[]): any