Refactor getImportsAndExports return structure

packages/knip/src/ProjectPrincipal.ts

@@ -246,10 +246,7 @@ export class ProjectPrincipal {
 
     const resolve = (specifier: string) => this.backend.resolveModuleNames([specifier], sourceFile.fileName)[0];
 
-    const { imports, exports, scripts, traceRefs } = _getImportsAndExports(sourceFile, resolve, typeChecker, {
-      ...options,
-      skipExports,
-    });
+    const { imports, ...rest } = _getImportsAndExports(sourceFile, resolve, typeChecker, { ...options, skipExports });
 
     const { internal, resolved, specifiers, unresolved, external } = imports;
 
@@ -293,16 +290,7 @@ export class ProjectPrincipal {
       }
     }
 
-    return {
-      imports: {
-        internal,
-        unresolved: unresolvedImports,
-        external,
-      },
-      exports,
-      scripts,
-      traceRefs,
-    };
+    return { imports: { internal, unresolved: unresolvedImports, external }, ...rest };
   }
 
   invalidateFile(filePath: string) {

packages/knip/src/index.ts

@@ -307,7 +307,7 @@ export const main = async (unresolvedConfiguration: CommandLineOptions) => {
 
     const workspace = chief.findWorkspaceByFilePath(filePath);
     if (workspace) {
-      const { imports, exports, scripts, traceRefs } = principal.analyzeSourceFile(
+      const { imports, exports, duplicates, scripts, traceRefs } = principal.analyzeSourceFile(
         filePath,
         {
           skipTypeOnly: isStrict,
@@ -326,6 +326,7 @@ export const main = async (unresolvedConfiguration: CommandLineOptions) => {
 
       file.imports = imports;
       file.exports = exports;
+      file.duplicates = duplicates;
       file.scripts = scripts;
       file.traceRefs = traceRefs;
 
@@ -402,7 +403,7 @@ export const main = async (unresolvedConfiguration: CommandLineOptions) => {
       streamer.cast('Connecting the dots...');
 
       for (const [filePath, file] of graph.entries()) {
-        const exportItems = file.exports?.exported;
+        const exportItems = file.exports;
 
         if (!exportItems || exportItems.size === 0) continue;
 
@@ -454,7 +455,7 @@ export const main = async (unresolvedConfiguration: CommandLineOptions) => {
                   continue;
                 }
                 // Skip exports if re-exported from entry file and tagged
-                const reExportedItem = graph.get(reExportingEntryFile)?.exports.exported.get(identifier);
+                const reExportedItem = graph.get(reExportingEntryFile)?.exports.get(identifier);
                 if (reExportedItem && shouldIgnore(reExportedItem.jsDocTags)) continue;
               }
 
@@ -571,8 +572,8 @@ export const main = async (unresolvedConfiguration: CommandLineOptions) => {
       const ws = chief.findWorkspaceByFilePath(filePath);
 
       if (ws) {
-        if (file.exports?.duplicate) {
-          for (const symbols of file.exports.duplicate) {
+        if (file.duplicates) {
+          for (const symbols of file.duplicates) {
             if (symbols.length > 1) {
               const symbol = symbols.map(s => s.symbol).join('|');
               collector.addIssue({ type: 'duplicates', filePath, workspace: ws.name, symbol, symbols });

packages/knip/src/types/dependency-graph.ts

@@ -62,10 +62,8 @@ export type FileNode = {
     external: Set<string>;
     unresolved: Set<UnresolvedImport>;
   };
-  exports: {
-    exported: ExportMap;
-    duplicate: Iterable<Array<IssueSymbol>>;
-  };
+  exports: ExportMap;
+  duplicates: Iterable<Array<IssueSymbol>>;
   scripts: Set<string>;
   imported?: ImportDetails;
   internalImportCache?: ImportMap;

packages/knip/src/typescript/get-imports-and-exports.ts

@@ -69,9 +69,9 @@ const getImportsAndExports = (
   options: GetImportsAndExportsOptions
 ) => {
   const { skipTypeOnly, tags, ignoreExportsUsedInFile } = options;
-  const internalImports: ImportMap = new Map();
-  const externalImports = new Set<string>();
-  const unresolvedImports = new Set<UnresolvedImport>();
+  const internal: ImportMap = new Map();
+  const external = new Set<string>();
+  const unresolved = new Set<UnresolvedImport>();
   const resolved = new Set<string>();
   const specifiers = new Set<[string, string]>();
   const exports: ExportMap = new Map();
@@ -122,11 +122,11 @@ const getImportsAndExports = (
 
     specifiers.add([specifier, filePath]);
 
-    const file = internalImports.get(filePath);
+    const file = internal.get(filePath);
 
     const imports = file ?? createImports();
 
-    if (!file) internalImports.set(filePath, imports);
+    if (!file) internal.set(filePath, imports);
 
     const nsOrAlias = symbol ? String(symbol.escapedName) : alias;
 
@@ -191,7 +191,7 @@ const getImportsAndExports = (
 
           // Module resolver may return DTS references or unaliased npm package names,
           // but in the rest of the program we want the package name based on the original specifier.
-          externalImports.add(sanitizedSpecifier);
+          external.add(sanitizedSpecifier);
         }
       }
     } else {
@@ -201,9 +201,9 @@ const getImportsAndExports = (
 
       if (typeof pos === 'number') {
         const { line, character } = sourceFile.getLineAndCharacterOfPosition(pos);
-        unresolvedImports.add({ specifier, pos, line: line + 1, col: character + 1 });
+        unresolved.add({ specifier, pos, line: line + 1, col: character + 1 });
       } else {
-        unresolvedImports.add({ specifier });
+        unresolved.add({ specifier });
       }
     }
   };
@@ -215,7 +215,7 @@ const getImportsAndExports = (
       const importedSymbolFilePath = importedInternalSymbols.get(symbol);
       if (importedSymbolFilePath) {
         const importId = String(symbol.escapedName);
-        const internalImport = internalImports.get(importedSymbolFilePath);
+        const internalImport = internal.get(importedSymbolFilePath);
         if (internalImport) {
           if (importId !== identifier) {
             // Pattern: import { id as alias } from 'specifier'; export = id; export default id;
@@ -316,7 +316,7 @@ const getImportsAndExports = (
       if (symbol) {
         if (filePath) {
           if (!isImportSpecifier(node)) {
-            const imports = internalImports.get(filePath);
+            const imports = internal.get(filePath);
             if (imports) {
               traceRefs.add(id);
               if (isAccessExpression(node.parent)) {
@@ -378,7 +378,7 @@ const getImportsAndExports = (
       const namespace = left.text;
       const { filePath } = getImport(namespace, node);
       if (filePath) {
-        const internalImport = internalImports.get(filePath);
+        const internalImport = internal.get(filePath);
         if (internalImport) addNsMemberRefs(internalImport, namespace, right.text);
       }
     }
@@ -421,17 +421,9 @@ const getImportsAndExports = (
   }
 
   return {
-    imports: {
-      internal: internalImports,
-      external: externalImports,
-      resolved,
-      specifiers,
-      unresolved: unresolvedImports,
-    },
-    exports: {
-      exported: exports,
-      duplicate: [...aliasedExports.values()],
-    },
+    imports: { internal, external, resolved, specifiers, unresolved },
+    exports,
+    duplicates: [...aliasedExports.values()],
     scripts,
     traceRefs,
   };

packages/knip/src/util/dependency-graph.ts

@@ -40,10 +40,8 @@ const createFileNode = (): FileNode => ({
     external: new Set(),
     unresolved: new Set(),
   },
-  exports: {
-    exported: new Map(),
-    duplicate: new Set(),
-  },
+  exports: new Map(),
+  duplicates: new Set(),
   scripts: new Set(),
   traceRefs: new Set(),
 });