@litert/decorator

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Function validateArgs ​

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

Use in the decorator callback functions only.

Source: packages/library/src/modern/MethodDecorators.ts#L87

Import ​

ts
import { Methods } from '@litert/decorator';
import { Methods as MethodsFromModern } from '@litert/decorator/modern';

Access this function as Methods.validateArgs().

Signature ​

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

Parameters ​

  • Parameter args

    The arguments passed to the decorator callback.

Return Value ​

See the signature for the exact return type.

Examples ​

ts
import { Methods } from '@litert/decorator';

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

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