larry babby and threejs for glsl

webGl/my-threejs-test/node_modules/@parcel/config-default/test/config.test.js

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+// @flow
+
+import assert from 'assert';
+
+import config from '../';
+import packageJson from '../package.json';
+
+describe('@parcel/config-default', () => {
+  let packageJsonDependencyNames: Set<string>;
+  let configPackageReferences: Set<string>;
+
+  before(() => {
+    packageJsonDependencyNames = new Set([
+      ...Object.keys(packageJson.dependencies || {}),
+      ...Object.keys(packageJson.parcelDependencies || {}),
+    ]);
+    configPackageReferences = collectConfigPackageReferences(config);
+  });
+
+  describe('package.json', () => {
+    it('includes every package referenced in the config', () => {
+      let missingReferences = [];
+      for (let reference of configPackageReferences) {
+        if (!packageJsonDependencyNames.has(reference)) {
+          missingReferences.push(reference);
+        }
+      }
+
+      // Assert with deepEqual rather than e.g. missingReferences.size as the
+      // assertion message with deepEqual enumerates the differences nicely
+      assert.deepEqual(missingReferences, []);
+    });
+
+    it('does not include packages not referenced in the config', () => {
+      let unnecessaryDependencies = [];
+      for (let dependency of packageJsonDependencyNames) {
+        if (!configPackageReferences.has(dependency)) {
+          unnecessaryDependencies.push(dependency);
+        }
+      }
+
+      assert.deepEqual(unnecessaryDependencies, []);
+    });
+  });
+});
+
+function collectConfigPackageReferences(
+  configSection: mixed,
+  references: Set<string> = new Set(),
+): Set<string> {
+  if (configSection == null || typeof configSection !== 'object') {
+    throw new TypeError('Expected config section to be an object or an array');
+  }
+
+  for (let value of Object.values(configSection)) {
+    if (typeof value === 'string') {
+      if (value === '...') {
+        continue;
+      }
+
+      references.add(value);
+    } else if (configSection != null && typeof configSection === 'object') {
+      collectConfigPackageReferences(value, references);
+    } else {
+      throw new Error(
+        'Parcel configs must contain only strings, arrays, or objects in value positions',
+      );
+    }
+  }
+
+  return references;
+}