[QUESTION] Easy and performant way to say src/features/feature-a can't depend on src/features/feature-b?

[vincentjames501]

Question

We have a very large project with 100s of features. We really like the elegance of this API, however, we're struggling to keep the unit test time down (naively takes 100+s). Our goal is to simply say src/features/feature-a can't depend on src/features/feature-b and try to avoid any sort of n^2 complexity.

Code Context

This helps cut the time down a bit but is a bit hacky. Just curious if there was a better way to express this which could be faster?

    before(async () => {
      const violations = await projectFiles()
        .inFolder('src/app/features/**')
        .shouldNot()
        .dependOnFiles()
        .inFolder('src/app/features/**')
        .check();

      unexpectedByFeature = new Map();
      for (const v of violations) {
        for (const e of v.dependency.cumulatedEdges) {
          const from = featureOf(e.source);
          const to = featureOf(e.target);
          if (!from || !to || from === to) continue;
          if (CROSS_FEATURE_VIOLATIONS_SET.has(`${from}:${to}`)) continue;
          const arr = unexpectedByFeature.get(from) ?? [];
          arr.push(e);
          unexpectedByFeature.set(from, arr);
        }
      }
    });

    for (const fromFeature of features) {
      it(`${fromFeature} should not import from sibling features`, () => {
        const vs = unexpectedByFeature?.get(fromFeature) ?? [];
        if (vs.length > 0) {
          const lines = vs.map(e => `  ${e.source}\n    → ${e.target}`);
          throw new Error(
            `Feature "${fromFeature}" has forbidden cross-feature imports:\n${lines.join('\n')}`
          );
        }
      });
    }
  });

Your setup:

• OS: MacOS
• Node.js Version: 22
• ArchUnitTS Version: 2.1.69
• Testing Framework: Node and Vitest

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• [ x ] README.md
• [ x ] API Documentation
• [ x ] Examples folder
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