Function warnOnce

packages/webpack5/src/helpers/log.ts:32–39

(key: string, ...data: any)

const warnedMap: any = {};
export function warnOnce(key: string, ...data: any): void {
	if (warnedMap[key]) {
		return;
	}

	warnedMap[key] = true;
	warn(...data);
}

export function info(...data: any): void {
	if (env.verbose) {