knip
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Find and fix unused dependencies, exports and files in your TypeScript and JavaScript projects
35 lines (34 loc) • 1.35 kB
JavaScript
import { IMPORT_STAR } from "../../constants.js";
import { getCachedUsage, setCachedUsage } from "../cache.js";
import { CONTINUE } from "../constants.js";
import { findImportRef } from "../utils.js";
import { walkDown } from "../walk-down.js";
export const getUsage = (graph, entryPaths, filePath, identifier) => {
const cached = getCachedUsage(graph, filePath, identifier);
if (cached)
return cached;
const locations = [];
let reExportingEntryFile;
if (entryPaths.has(filePath)) {
reExportingEntryFile = filePath;
}
walkDown(graph, filePath, identifier, (sourceFile, sourceId, importingFile, id, isEntry, via) => {
const lookupId = via === 'importNS' ? IMPORT_STAR : sourceId;
const importRef = findImportRef(graph, importingFile, sourceFile, lookupId);
locations.push({
filePath: importingFile,
identifier: id,
pos: importRef?.pos ?? 0,
line: importRef?.line ?? 0,
col: importRef?.col ?? 0,
isEntry,
via,
});
if (isEntry && !reExportingEntryFile)
reExportingEntryFile = importingFile;
return CONTINUE;
}, entryPaths);
const result = { locations, reExportingEntryFile };
setCachedUsage(graph, filePath, identifier, result);
return result;
};