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Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.

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/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/

"use strict";

const { UsageState } = require("../ExportsInfo");

/** @typedef {import("../ExportsInfo").ExportInfo} ExportInfo */
/** @typedef {import("../util/runtime").RuntimeSpec} RuntimeSpec */

/**
 * @param {RuntimeSpec} runtime the runtime
 * @param {string[][]} referencedExports list of referenced exports, will be added to
 * @param {string[]} prefix export prefix
 * @param {ExportInfo=} exportInfo the export info
 * @param {boolean} defaultPointsToSelf when true, using default will reference itself
 * @param {Set} alreadyVisited already visited export info (to handle circular reexports)
 */
const processExportInfo = (
	runtime,
	referencedExports,
	prefix,
	exportInfo,
	defaultPointsToSelf = false,
	alreadyVisited = new Set()
) => {
	if (!exportInfo) {
		referencedExports.push(prefix);
		return;
	}
	const used = exportInfo.getUsed(runtime);
	if (used === UsageState.Unused) return;
	if (alreadyVisited.has(exportInfo)) {
		referencedExports.push(prefix);
		return;
	}
	alreadyVisited.add(exportInfo);
	if (
		used !== UsageState.OnlyPropertiesUsed ||
		!exportInfo.exportsInfo ||
		exportInfo.exportsInfo.otherExportsInfo.getUsed(runtime) !==
			UsageState.Unused
	) {
		alreadyVisited.delete(exportInfo);
		referencedExports.push(prefix);
		return;
	}
	const exportsInfo = exportInfo.exportsInfo;
	for (const exportInfo of exportsInfo.orderedExports) {
		processExportInfo(
			runtime,
			referencedExports,
			defaultPointsToSelf && exportInfo.name === "default"
				? prefix
				: prefix.concat(exportInfo.name),
			exportInfo,
			false,
			alreadyVisited
		);
	}
	alreadyVisited.delete(exportInfo);
};
module.exports = processExportInfo;