Function normalizeNodeCoreModuleRequest

lib/ExternalModule.js:128–154

(
	request,
	externalType,
	runtimeTemplate
)

 * @returns {string | string[]} the normalized request
 */
const normalizeNodeCoreModuleRequest = (
	request,
	externalType,
	runtimeTemplate
) => {
	if (!NODE_RESOLVING_EXTERNAL_TYPES.has(externalType)) return request;
	const name = Array.isArray(request) ? request[0] : request;
	if (typeof name !== "string") return request;
	/**
	 * @param {string} next replacement specifier
	 * @returns {string | string[]} request with the specifier swapped
	 */
	const withName = (next) =>
		Array.isArray(request) ? [next, ...request.slice(1)] : next;

	if (
		runtimeTemplate.outputOptions.environment.nodePrefixForCoreModules === false
	) {
		if (!name.startsWith(NODE_PREFIX)) return request;
		const stripped = name.slice(NODE_PREFIX.length);
		return coreModules.has(stripped) ? withName(stripped) : request;
	}
	if (runtimeTemplate.isUniversalTarget() && !name.startsWith(NODE_PREFIX)) {
		return coreModules.has(name) ? withName(NODE_PREFIX + name) : request;
	}
	return request;
};

/**
 * Gets source for global variable external.