Power Platform QA Solution

Metadata

IDunused-components

Result KeyunusedComponents

Fileunused-components.js

Built-inYes

Analyzer Classification

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Dataverse test set Some tests

Description

Detects canvas component definitions that are declared but never instantiated on any screen

Prompt

Not available — this analyzer was not AI-generated.

Source Code

unused-components.js — read-only (built-in) · Input data reference ↗

Checking…

/**
 * Detect canvas component definitions that are declared in the solution
 * but never instantiated on any screen.
 *
 * A component is considered "used" if at least one node in the control tree
 * is an instance of it (isComponentInstance === true and componentName matches
 * the definition's name).
 */
export function findUnusedComponents(controlTree) {
  const results = [];

  // Collect every component name that has at least one instance somewhere.
  const usedNames = new Set();
  for (const node of controlTree.allNodes) {
    if (node.isComponentInstance) {
      // Prefer the explicit ComponentName when present; some instances
      // identify themselves by base type instead.
      if (node.componentName) usedNames.add(node.componentName);
      if (node.baseType && node.baseType !== 'CanvasComponent') {
        usedNames.add(node.baseType);
      }
    }
  }

  for (const comp of controlTree.components) {
    if (usedNames.has(comp.name)) continue;
    results.push({
      name: comp.name,
      type: comp.type || 'CanvasComponent',
      file: comp.filePath,
      reason: 'Component is defined but never instantiated on any screen',
    });
  }

  results.sort((a, b) => a.name.localeCompare(b.name));
  return results;
}

export default {
  name: 'Unused Components',
  description: 'Detects canvas component definitions that are declared but never instantiated on any screen',
  resultKey: 'unusedComponents',
  resultSchema: {
    keys: [
      { key: 'name',   label: 'Component', suggestedFormat: 'name-copy' },
      { key: 'type',   label: 'Type',      suggestedFormat: 'code' },
      { key: 'file',   label: 'File',      suggestedFormat: 'dim' },
      { key: 'reason', label: 'Reason',    suggestedFormat: 'dim' }
    ]
  },
  analyze(controlTree, _refGraph, _extraction) {
    return findUnusedComponents(controlTree);
  }
};

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Enabled	Key	Label	Format	Width

Configure Analyzer — Unused Components BUILT-IN

Test Unused Components

Test results