n8n/packages/editor-ui/src/utils.ts

export const omit = (keyToOmit: string, { [keyToOmit]: _, ...remainder }) => remainder;

export function isObjectLiteral(maybeObject: unknown): maybeObject is { [key: string]: string } {
	return typeof maybeObject === 'object' && maybeObject !== null && !Array.isArray(maybeObject);
}

export function isJsonKeyObject(item: unknown): item is {
	json: unknown;
	[otherKeys: string]: unknown;
} {
	if (!isObjectLiteral(item)) return false;

	return Object.keys(item).includes('json');
}