class@af-utils/virtual-core
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VirtualScrollerError

Error thrown for an invalid virtual-scroller operation.

Remarks

The package’s development export condition includes detailed diagnostic messages. The default production export keeps only the stable short code so consumer production bundles do not retain the diagnostic text.

Extends

  • Error

Constructors

Constructor

new VirtualScrollerError(code): VirtualScrollerError;

Create a package error with a stable machine-readable code.

Parameters

code

| "AFV_INVALID_INDEX" | "AFV_INVALID_OFFSET" | "AFV_INVALID_ITEM_COUNT" | "AFV_INVALID_ITEM_SIZE" | "AFV_INVALID_WIDGET_SIZE" | "AFV_INVALID_SCROLLER_OFFSET" | "AFV_INVALID_OVERSCAN" | "AFV_INVALID_SCROLL_ALIGNMENT" | "AFV_INVALID_SCROLL_BEHAVIOR" | "AFV_INVALID_SPLICE" | "AFV_INVALID_RANGE" | "AFV_EMPTY_MODEL" | "AFV_DISPOSED" | "AFV_BATCH_INVARIANT"

Returns

VirtualScrollerError

Overrides

Error.constructor

Properties

cause?

optional cause?: unknown;

Inherited from

Error.cause

code

readonly code: 
  | "AFV_INVALID_INDEX"
  | "AFV_INVALID_OFFSET"
  | "AFV_INVALID_ITEM_COUNT"
  | "AFV_INVALID_ITEM_SIZE"
  | "AFV_INVALID_WIDGET_SIZE"
  | "AFV_INVALID_SCROLLER_OFFSET"
  | "AFV_INVALID_OVERSCAN"
  | "AFV_INVALID_SCROLL_ALIGNMENT"
  | "AFV_INVALID_SCROLL_BEHAVIOR"
  | "AFV_INVALID_SPLICE"
  | "AFV_INVALID_RANGE"
  | "AFV_EMPTY_MODEL"
  | "AFV_DISPOSED"
  | "AFV_BATCH_INVARIANT";

Stable machine-readable error code.


message

message: string;

Inherited from

Error.message

name

name: string;

Inherited from

Error.name

stack?

optional stack?: string;

Inherited from

Error.stack

stackTraceLimit

static stackTraceLimit: number;

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.

Inherited from

Error.stackTraceLimit

Methods

captureStackTrace()

static captureStackTrace(targetObject, constructorOpt?): void;

Creates 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();

Parameters

targetObject

object

constructorOpt?

Function

Returns

void

Inherited from

Error.captureStackTrace

prepareStackTrace()

static prepareStackTrace(err, stackTraces): any;

Parameters

err

Error

stackTraces

CallSite[]

Returns

any

See

https://v8.dev/docs/stack-trace-api#customizing-stack-traces

Inherited from

Error.prepareStackTrace