Function validateArgs

Check the arguments passed to a decorator function are in the form of member method parameter decorator or not.

Use in the decorator callback functions only.

WARNING

This is an outdated ECMAScript decorators proposal.

Source: packages/library/src/legacy/MethodParameterDecorators.ts#L182

Import

import { MethodParameters } from '@litert/decorator/legacy';

Access this function as MethodParameters.validateArgs().

Signature

export function validateArgs(
    args: any[],
): args is Parameters<tLoc.ICallbackFn>;

Parameters

• Parameter args

  The arguments passed to the decorator callback.

Return Value

See the signature for the exact return type.

Examples

import { MethodParameters } from '@litert/decorator/legacy';

function decorator(...args: any[]): void {
    if (!MethodParameters.validateArgs(args)) {
        throw new TypeError('Invalid decorator usage.');
    }

    // Arguments are now narrowed to MethodParameters.ICallbackFn parameters.
}