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65 lines
1.7 KiB
65 lines
1.7 KiB
/* |
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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("../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 {string[][]} 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.concat(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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