feat: add more patterns to unnecessary files hints

app/utils/package-content-hints.ts

@@ -11,8 +11,10 @@ const POSSIBLY_UNNECESSARY_FILES: ReadonlySet<string> = new Set([
   '.editorconfig',
   '.prettierignore',
   '.eslintignore',
+  '.jshintignore',
   '.gitignore',
   '.gitattributes',
+  '.travis.yml',
   'tsconfig.json',
   '.node-version',
   '.nvmrc',
@@ -27,6 +29,10 @@ const POSSIBLY_UNNECESSARY_FILES: ReadonlySet<string> = new Set([
   '.env.production.local',
   '.nycrc',
   'nyc.json',
+  'CHANGELOG.md',
+  'changelog.md',
+  'CHANGELOG.markdown',
+  'changelog.markdown',
 ])
 
 const POSSIBLY_UNNECESSARY_DIRECTORIES: ReadonlySet<string> = new Set([
@@ -37,9 +43,10 @@ const POSSIBLY_UNNECESSARY_DIRECTORIES: ReadonlySet<string> = new Set([
   '.zed',
   'test',
   'tests',
-  '__tests__',
   'spec',
   'specs',
+  'example',
+  'examples',
 ])
 
 const POSSIBLY_UNNECESSARY_DIRECTORY_PATTERNS: readonly RegExp[] = [/^__.+__$/]
@@ -58,6 +65,8 @@ const POSSIBLY_UNNECESSARY_PATTERNS: readonly RegExp[] = [
   /^\.(?!npmrc$)[a-z][a-z0-9_-]*rc$/,
   /^\.(?!npmrc\.)[a-z][a-z0-9_-]*rc\.(?:json|js|cjs|mjs|yml|yaml|toml)$/,
   /^\.[a-z][a-z0-9_-]*\.config\.(?:js|cjs|mjs|ts|mts|cts)$/,
+  // Match files ending in .test.js, .test.ts, .spec.js, .spec.ts, etc.
+  /(?:test|spec)\.(?:j|t)s$/,
 ]
 
 export function isPossiblyUnnecessaryContent(name: string, type: 'file' | 'directory'): boolean {

test/unit/app/utils/package-content-hints.spec.ts

@@ -8,6 +8,7 @@ describe('isPossiblyUnnecessaryContent', () => {
     expect(isPossiblyUnnecessaryContent('.gitattributes', 'file')).toBe(true)
     expect(isPossiblyUnnecessaryContent('.prettierignore', 'file')).toBe(true)
     expect(isPossiblyUnnecessaryContent('.eslintignore', 'file')).toBe(true)
+    expect(isPossiblyUnnecessaryContent('.jshintignore', 'file')).toBe(true)
     expect(isPossiblyUnnecessaryContent('tsconfig.json', 'file')).toBe(true)
   })
 
@@ -30,6 +31,25 @@ describe('isPossiblyUnnecessaryContent', () => {
     expect(isPossiblyUnnecessaryContent('nyc.json', 'file')).toBe(true)
   })
 
+  it('flags editor and CI files', () => {
+    expect(isPossiblyUnnecessaryContent('.travis.yml', 'file')).toBe(true)
+  })
+
+  it('flags test files', () => {
+    expect(isPossiblyUnnecessaryContent('test.js', 'file')).toBe(true)
+    expect(isPossiblyUnnecessaryContent('index.test.js', 'file')).toBe(true)
+    expect(isPossiblyUnnecessaryContent('index.spec.js', 'file')).toBe(true)
+    expect(isPossiblyUnnecessaryContent('index.test.ts', 'file')).toBe(true)
+    expect(isPossiblyUnnecessaryContent('index.spec.ts', 'file')).toBe(true)
+  })
+
+  it('flags changelog files', () => {
+    expect(isPossiblyUnnecessaryContent('CHANGELOG.md', 'file')).toBe(true)
+    expect(isPossiblyUnnecessaryContent('changelog.md', 'file')).toBe(true)
+    expect(isPossiblyUnnecessaryContent('CHANGELOG.markdown', 'file')).toBe(true)
+    expect(isPossiblyUnnecessaryContent('changelog.markdown', 'file')).toBe(true)
+  })
+
   it('matches ESLint configuration patterns', () => {
     for (const extension of ['js', 'cjs', 'mjs', 'ts', 'mts', 'cts']) {
       expect(isPossiblyUnnecessaryContent(`eslint.config.${extension}`, 'file')).toBe(true)
@@ -105,6 +125,11 @@ describe('isPossiblyUnnecessaryContent', () => {
     expect(isPossiblyUnnecessaryContent('specs', 'directory')).toBe(true)
   })
 
+  it('flags example directories', () => {
+    expect(isPossiblyUnnecessaryContent('example', 'directory')).toBe(true)
+    expect(isPossiblyUnnecessaryContent('examples', 'directory')).toBe(true)
+  })
+
   it('does not flag ordinary source files or directories', () => {
     expect(isPossiblyUnnecessaryContent('index.js', 'file')).toBe(false)
     expect(isPossiblyUnnecessaryContent('package.json', 'file')).toBe(false)