9ea53803f7
Creates a tool for validating TypeScript circular dependencies. The tool has been designed in a way that allows us to slowly burn down the amount of circular dependencies while ensuring that we don't regress. The tool doesn't rely on Madge since it doesn't provide a programmatic way for doing path mapping. We need path mapping since we also want to check for cycles across different entry-points or packages. The tool uses the TypeScript AST to manually collect cycles. This code is not a lot of bloat and also gives us more flexibility (if we ever need it). Closes #35041. PR Close #35647
28 lines
884 B
TypeScript
28 lines
884 B
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import * as ts from 'typescript';
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/**
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* Finds all module references in the specified source file.
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* @param node Source file which should be parsed.
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* @returns List of import specifiers in the source file.
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*/
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export function getModuleReferences(node: ts.SourceFile): string[] {
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const references: string[] = [];
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const visitNode = (node: ts.Node) => {
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if ((ts.isImportDeclaration(node) || ts.isExportDeclaration(node)) &&
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node.moduleSpecifier !== undefined && ts.isStringLiteral(node.moduleSpecifier)) {
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references.push(node.moduleSpecifier.text);
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}
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ts.forEachChild(node, visitNode);
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};
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ts.forEachChild(node, visitNode);
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return references;
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}
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