Marc Mintel
5397309103
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68 lines
1.8 KiB
Plaintext
68 lines
1.8 KiB
Plaintext
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const { UsageState } = require("../ExportsInfo");
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/** @typedef {import("../Dependency").RawReferencedExports} RawReferencedExports */
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/** @typedef {import("../ExportsInfo").ExportInfo} ExportInfo */
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/** @typedef {import("../util/runtime").RuntimeSpec} RuntimeSpec */
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/**
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* @param {RuntimeSpec} runtime the runtime
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* @param {RawReferencedExports} referencedExports list of referenced exports, will be added to
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* @param {string[]} prefix export prefix
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* @param {ExportInfo=} exportInfo the export info
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* @param {boolean} defaultPointsToSelf when true, using default will reference itself
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* @param {Set<ExportInfo>} alreadyVisited already visited export info (to handle circular reexports)
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*/
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const processExportInfo = (
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runtime,
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referencedExports,
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prefix,
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exportInfo,
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defaultPointsToSelf = false,
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alreadyVisited = new Set()
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) => {
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if (!exportInfo) {
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referencedExports.push(prefix);
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return;
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}
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const used = exportInfo.getUsed(runtime);
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if (used === UsageState.Unused) return;
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if (alreadyVisited.has(exportInfo)) {
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referencedExports.push(prefix);
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return;
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}
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alreadyVisited.add(exportInfo);
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if (
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used !== UsageState.OnlyPropertiesUsed ||
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!exportInfo.exportsInfo ||
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exportInfo.exportsInfo.otherExportsInfo.getUsed(runtime) !==
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UsageState.Unused
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) {
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alreadyVisited.delete(exportInfo);
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referencedExports.push(prefix);
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return;
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}
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const exportsInfo = exportInfo.exportsInfo;
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for (const exportInfo of exportsInfo.orderedExports) {
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processExportInfo(
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runtime,
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referencedExports,
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defaultPointsToSelf && exportInfo.name === "default"
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? prefix
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: [...prefix, exportInfo.name],
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exportInfo,
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false,
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alreadyVisited
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);
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}
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alreadyVisited.delete(exportInfo);
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};
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module.exports = processExportInfo;
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