webpack
Version:
Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.
66 lines (61 loc) • 1.78 kB
JavaScript
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
;
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<ExportInfo>} 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;