Fixes to config files + Cosmiconfig, Lilconfig and Unconfig generation.

packages/knip/package.json

@@ -50,11 +50,7 @@
     "create-plugin": "bun ./scripts/create-new-plugin.ts",
     "postcreate-plugin": "biome format --write schema.json schema-jsonc.json src/ConfigurationValidator.ts"
   },
-  "files": [
-    "dist",
-    "schema.json",
-    "schema-jsonc.json"
-  ],
+  "files": ["dist", "schema.json", "schema-jsonc.json"],
   "dependencies": {
     "@ericcornelissen/bash-parser": "0.5.3",
     "@nodelib/fs.walk": "2.0.0",

packages/knip/src/plugins/commitlint/index.ts

@@ -1,22 +1,18 @@
 import type { IsPluginEnabled, Plugin, ResolveConfig } from '#p/types/plugins.js';
-import { hasDependency } from '#p/util/plugin.js';
+import { hasDependency, toCosmiconfig } from '#p/util/plugin.js';
 import type { CommitLintConfig } from './types.js';
 
 // https://commitlint.js.org
 // https://github.com/conventional-changelog/commitlint#config
+// https://github.com/conventional-changelog/commitlint/blob/master/%40commitlint/load/src/utils/load-config.ts
 
 const title = 'commitlint';
 
 const enablers = ['@commitlint/cli'];
 
 const isEnabled: IsPluginEnabled = ({ dependencies }) => hasDependency(dependencies, enablers);
 
-const config = [
-  '.commitlintrc',
-  '.commitlintrc.{json,yaml,yml,js,cjs,ts,cts}',
-  'commitlint.config.{js,cjs,ts,cts}',
-  'package.json',
-];
+const config = ['package.json', 'package.yaml', ...toCosmiconfig('commitlint', { additionalExtensions: ['cts'] })];
 
 const resolveConfig: ResolveConfig<CommitLintConfig> = async config => {
   const extendsConfigs = config.extends

packages/knip/src/plugins/graphql-codegen/index.ts

@@ -3,17 +3,21 @@ import { get } from '#p/util/object.js';
 import { isInternal } from '#p/util/path.js';
 import { hasDependency } from '#p/util/plugin.js';
 import { toEntryPattern } from '#p/util/protocols.js';
-import { isConfigurationOutput, isGraphqlConfigTypes, isGraphqlProjectsConfigTypes } from './types.js';
 import type {
   ConfiguredPlugin,
   GraphqlCodegenTypes,
   GraphqlConfigTypes,
   GraphqlProjectsConfigTypes,
   PresetNames,
 } from './types.js';
+import { isConfigurationOutput, isGraphqlConfigTypes, isGraphqlProjectsConfigTypes } from './types.js';
 
+// Both use Cosmiconfig with custom searchPlaces - not using helper as a result
+// Codegen:
 // https://the-guild.dev/graphql/codegen/docs/config-reference/codegen-config
 // https://github.com/dotansimha/graphql-code-generator/blob/master/packages/graphql-codegen-cli/src/config.ts
+// Config:
+// https://the-guild.dev/graphql/config/docs/user/usage#config-search-places
 
 const title = 'GraphQL Codegen';
 
@@ -26,11 +30,10 @@ const packageJsonPath: Plugin['packageJsonPath'] = manifest => get(manifest, 'co
 const config = [
   'package.json',
   // graphql-codegen config files
-  'codegen.{json,yml,yaml,js,ts,mjs,cts}',
+  'codegen.{json,yml,yaml,js,ts}',
   '.codegenrc.{json,yml,yaml,js,ts}',
   'codegen.config.js',
   // graphql-config config files
-  // https://the-guild.dev/graphql/config/docs/user/usage#config-search-places
   '.graphqlrc',
   '.graphqlrc.{json,yml,yaml,toml,js,ts}',
   'graphql.config.{json,yml,yaml,toml,js,cjs,ts}',

packages/knip/src/plugins/lint-staged/index.ts

@@ -1,5 +1,5 @@
 import type { IsPluginEnabled, Plugin, ResolveConfig } from '#p/types/plugins.js';
-import { getDependenciesFromScripts, hasDependency } from '#p/util/plugin.js';
+import { getDependenciesFromScripts, hasDependency, toLilconfig } from '#p/util/plugin.js';
 import type { LintStagedConfig } from './types.js';
 
 // https://github.com/okonet/lint-staged
@@ -13,12 +13,11 @@ const isEnabled: IsPluginEnabled = ({ dependencies }) => hasDependency(dependenc
 const packageJsonPath = 'lint-staged';
 
 const config = [
-  '.lintstagedrc',
-  '.lintstagedrc.json',
-  '.lintstagedrc.{yml,yaml}',
-  '.lintstagedrc.{js,mjs,cjs}',
-  'lint-staged.config.{js,mjs,cjs}',
   'package.json',
+  'package.yaml',
+  'package.yml',
+  ...toLilconfig('lint-staged'),
+  ...toLilconfig('lintstaged'),
 ];
 
 const resolveConfig: ResolveConfig<LintStagedConfig> = async (config, options) => {

packages/knip/src/plugins/linthtml/index.ts

@@ -1,6 +1,6 @@
 import type { IsPluginEnabled, Plugin, ResolveConfig } from '#p/types/plugins.js';
 import { isInternal } from '#p/util/path.js';
-import { hasDependency } from '#p/util/plugin.js';
+import { hasDependency, toCosmiconfig } from '#p/util/plugin.js';
 import { toEntryPattern } from '#p/util/protocols.js';
 import type { PluginConfig } from './types.js';
 
@@ -14,14 +14,7 @@ const enablers = ['@linthtml/linthtml'];
 
 const isEnabled: IsPluginEnabled = ({ dependencies }) => hasDependency(dependencies, enablers);
 
-const config = [
-  '.linthtmlrc',
-  '.linthtmlrc.json',
-  '.linthtmlrc.yml',
-  '.linthtmlrc.{js,cjs}',
-  'linthtml.config.js',
-  'package.json',
-];
+const config = ['package.json', ...toCosmiconfig('linthtml')];
 
 const resolveConfig: ResolveConfig<PluginConfig> = config => {
   const extensions = [config.extends ?? []]

packages/knip/src/plugins/lockfile-lint/index.ts

@@ -1,6 +1,6 @@
 import type { EnablerPatterns } from '#p/types/config.js';
 import type { IsPluginEnabled, Plugin } from '#p/types/plugins.js';
-import { hasDependency } from '#p/util/plugin.js';
+import { hasDependency, toCosmiconfig } from '#p/util/plugin.js';
 
 // https://github.com/lirantal/lockfile-lint/blob/main/packages/lockfile-lint/README.md
 
@@ -10,7 +10,7 @@ const enablers: EnablerPatterns = ['lockfile-lint'];
 
 const isEnabled: IsPluginEnabled = ({ dependencies }) => hasDependency(dependencies, enablers);
 
-const config = ['.lockfile-lintrc', '.lockfile-lint.{js,toml}', 'lockfile-lint.config.js', 'package.json'];
+const config = ['package.json', ...toCosmiconfig('lockfile-lint', { additionalExtensions: ['toml'] })];
 
 export default {
   title,

packages/knip/src/plugins/npm-package-json-lint/index.ts

@@ -1,5 +1,5 @@
 import type { IsPluginEnabled, Plugin, ResolveConfig } from '#p/types/plugins.js';
-import { hasDependency } from '#p/util/plugin.js';
+import { hasDependency, toCosmiconfig } from '#p/util/plugin.js';
 import type { NpmPkgJsonLintConfig } from './types.js';
 
 // https://npmpackagejsonlint.org/docs/
@@ -12,7 +12,7 @@ const isEnabled: IsPluginEnabled = ({ dependencies }) => hasDependency(dependenc
 
 const packageJsonPath = 'npmpackagejsonlint';
 
-const config = ['.npmpackagejsonlintrc.json', 'npmpackagejsonlint.config.js', 'package.json'];
+const config = ['package.json', ...toCosmiconfig('npmpackagejsonlint')];
 
 const resolveConfig: ResolveConfig<NpmPkgJsonLintConfig> = localConfig => {
   return localConfig?.extends ? [localConfig.extends] : [];

packages/knip/src/plugins/postcss/index.ts

@@ -1,14 +1,21 @@
 import type { IsPluginEnabled, Plugin, ResolveConfig } from '#p/types/plugins.js';
-import { hasDependency } from '#p/util/plugin.js';
+import { hasDependency, toLilconfig } from '#p/util/plugin.js';
 import type { PostCSSConfig } from './types.js';
 
+// https://github.com/postcss/postcss-load-config/blob/main/src/index.js#L110
+// Additionally postcss.config.json is loaded by nextjs
+
 const title = 'PostCSS';
 
 const enablers = ['postcss', 'postcss-cli', 'next'];
 
 const isEnabled: IsPluginEnabled = ({ dependencies }) => hasDependency(dependencies, enablers);
 
-const config = ['postcss.config.{cjs,js}', 'postcss.config.json', 'package.json'];
+const config = [
+  'package.json',
+  'postcss.config.json',
+  ...toLilconfig('postcss', { configDir: false, additionalExtensions: ['ts', 'mts', 'cts', 'yaml', 'yml'] }),
+];
 
 const resolveConfig: ResolveConfig<PostCSSConfig> = config => {
   return config.plugins

packages/knip/src/plugins/prettier/index.ts

@@ -3,6 +3,7 @@ import { hasDependency } from '#p/util/plugin.js';
 import type { PrettierConfig } from './types.js';
 
 // https://prettier.io/docs/en/configuration.html
+// https://github.com/prettier/prettier/blob/main/src/config/prettier-config/config-searcher.js
 
 const title = 'Prettier';
 
@@ -13,9 +14,9 @@ const isEnabled: IsPluginEnabled = ({ dependencies, config }) =>
 
 const config = [
   '.prettierrc',
-  '.prettierrc.{json,js,cjs,mjs,yml,yaml}',
+  '.prettierrc.{json,js,cjs,mjs,yml,yaml,toml,json5}',
   'prettier.config.{js,cjs,mjs}',
-  'package.json',
+  'package.{json,yaml}',
 ];
 
 const resolveConfig: ResolveConfig<PrettierConfig> = config => {

packages/knip/src/plugins/release-it/index.ts

@@ -3,6 +3,8 @@ import { getDependenciesFromScripts, hasDependency } from '#p/util/plugin.js';
 import type { ReleaseItConfig } from './types.js';
 
 // https://github.com/release-it/release-it/blob/master/docs/plugins.md#using-a-plugin
+// Uses CosmiConfig but with custom searchPlaces
+// https://github.com/release-it/release-it/blob/main/lib/config.js
 
 const title = 'Release It';
 
@@ -12,7 +14,7 @@ const isEnabled: IsPluginEnabled = ({ dependencies }) => hasDependency(dependenc
 
 const packageJsonPath = 'release-it';
 
-const config = ['.release-it.json', '.release-it.{js,cjs}', '.release-it.{yml,yaml}', 'package.json'];
+const config = ['.release-it.{json,js,cjs,ts,yml,yaml,toml}', 'package.json'];
 
 const resolveConfig: ResolveConfig<ReleaseItConfig> = (config, options) => {
   const plugins = config.plugins ? Object.keys(config.plugins) : [];

packages/knip/src/plugins/semantic-release/index.ts

@@ -1,5 +1,5 @@
 import type { IsPluginEnabled, Plugin, ResolveConfig } from '#p/types/plugins.js';
-import { hasDependency } from '#p/util/plugin.js';
+import { hasDependency, toCosmiconfig } from '#p/util/plugin.js';
 import type { SemanticReleaseConfig } from './types.js';
 
 // https://github.com/semantic-release/semantic-release/blob/master/docs/usage/configuration.md#configuration-file
@@ -12,7 +12,7 @@ const isEnabled: IsPluginEnabled = ({ dependencies }) => hasDependency(dependenc
 
 const packageJsonPath = 'release';
 
-const config = ['.releaserc', '.releaserc.{yaml,yml,json,js,cjs}', 'release.config.{js,cjs}', 'package.json'];
+const config = ['package.json', ...toCosmiconfig('release')];
 
 const resolveConfig: ResolveConfig<SemanticReleaseConfig> = config => {
   const plugins = (config?.plugins ?? []).map(plugin => (Array.isArray(plugin) ? plugin[0] : plugin));

packages/knip/src/plugins/size-limit/index.ts

@@ -1,16 +1,21 @@
 import type { EnablerPatterns } from '#p/types/config.js';
 import type { IsPluginEnabled, Plugin } from '#p/types/plugins.js';
-import { hasDependency } from '#p/util/plugin.js';
+import { hasDependency, toLilconfig } from '#p/util/plugin.js';
 
 // https://github.com/ai/size-limit
+// Uses lilconfig but with custom searchPlaces
+// https://github.com/ai/size-limit/blob/main/packages/size-limit/get-config.js
 
 const title = 'size-limit';
 
 const enablers: EnablerPatterns = ['size-limit'];
 
 const isEnabled: IsPluginEnabled = ({ dependencies }) => hasDependency(dependencies, enablers);
 
-const config: string[] = ['.size-limit.{json,js,cjs,ts}', 'package.json'];
+const config = [
+  'package.json',
+  ...toLilconfig('size-limit', { configDir: false, additionalExtensions: ['ts', 'mts', 'cts'], rcSuffix: '' }),
+];
 
 export default {
   title,

packages/knip/src/plugins/stylelint/index.ts

@@ -1,6 +1,6 @@
 import type { IsPluginEnabled, Plugin, ResolveConfig } from '#p/types/plugins.js';
 import { isInternal } from '#p/util/path.js';
-import { hasDependency } from '#p/util/plugin.js';
+import { hasDependency, toCosmiconfig } from '#p/util/plugin.js';
 import type { BaseStyleLintConfig, StyleLintConfig } from './types.js';
 
 // https://stylelint.io/user-guide/configure/
@@ -11,7 +11,7 @@ const enablers = ['stylelint'];
 
 const isEnabled: IsPluginEnabled = ({ dependencies }) => hasDependency(dependencies, enablers);
 
-const config = ['.stylelintrc', '.stylelintrc.{cjs,js,json,yaml,yml}', 'stylelint.config.{cjs,mjs,js}'];
+const config = ['package.json', ...toCosmiconfig('stylelint')];
 
 const resolve = (config: StyleLintConfig | BaseStyleLintConfig): string[] => {
   const extend = config.extends ? [config.extends].flat().filter(id => !isInternal(id)) : [];

packages/knip/src/plugins/syncpack/index.ts

@@ -1,6 +1,7 @@
 import type { EnablerPatterns } from '#p/types/config.js';
 import type { IsPluginEnabled, Plugin } from '#p/types/plugins.js';
-import { hasDependency } from '#p/util/plugin.js';
+import { get } from '#p/util/object.js';
+import { hasDependency, toCosmiconfig } from '#p/util/plugin.js';
 
 // link to syncpack docs https://jamiemason.github.io/syncpack/config/syncpackrc/
 
@@ -10,11 +11,13 @@ const enablers: EnablerPatterns = ['syncpack'];
 
 const isEnabled: IsPluginEnabled = ({ dependencies }) => hasDependency(dependencies, enablers);
 
-const config = ['.syncpackrc', '.syncpackrc.{json,yaml,yml,js,cjs}', '.syncpack.config.{js,cjs}'];
+const config = ['package.json', ...toCosmiconfig('syncpack')];
+const packageJsonPath: Plugin['packageJsonPath'] = manifest => get(manifest, 'syncpack');
 
 export default {
   title,
   enablers,
   isEnabled,
   config,
+  packageJsonPath,
 } satisfies Plugin;

packages/knip/src/plugins/tailwind/index.ts

@@ -2,6 +2,7 @@ import type { IsPluginEnabled, Plugin } from '#p/types/plugins.js';
 import { hasDependency } from '#p/util/plugin.js';
 
 // https://tailwindcss.com/docs/configuration
+// Tailwinds lilconfig dependency is only used for postcss
 
 const title = 'Tailwind';
 

packages/knip/src/plugins/tsup/index.ts

@@ -4,14 +4,15 @@ import { toProductionEntryPattern } from '#p/util/protocols.js';
 import type { TsupConfig } from './types.js';
 
 // https://paka.dev/npm/tsup/api
+// https://github.com/egoist/tsup/blob/dev/src/load.ts
 
 const title = 'tsup';
 
 const enablers = ['tsup'];
 
 const isEnabled: IsPluginEnabled = ({ dependencies }) => hasDependency(dependencies, enablers);
 
-const config = ['tsup.config.{js,ts,cjs,json}', 'package.json'];
+const config = ['tsup.config.{js,ts,cjs,mjs,json}', 'package.json'];
 
 const resolveConfig: ResolveConfig<TsupConfig> = async config => {
   if (typeof config === 'function') config = await config({});

packages/knip/src/plugins/typedoc/index.ts

@@ -3,6 +3,7 @@ import { hasDependency } from '#p/util/plugin.js';
 import type { TypeDocConfig } from './types.js';
 
 // https://typedoc.org/guides/overview/
+// https://github.com/TypeStrong/typedoc/blob/9f0fb048399c7a1273dc452d01cca92b34f4675b/src/lib/utils/options/readers/typedoc.ts#L168
 
 const title = 'TypeDoc';
 
@@ -13,10 +14,10 @@ const isEnabled: IsPluginEnabled = ({ dependencies }) => hasDependency(dependenc
 const packageJsonPath = 'typedocOptions';
 
 const config = [
-  'typedoc.{js,cjs,json,jsonc}',
-  'typedoc.config.{js,cjs}',
-  '.config/typedoc.{js,cjs,json,jsonc}',
-  '.config/typedoc.config.{js,cjs}',
+  'typedoc.{js,cjs,mjs,json,jsonc}',
+  'typedoc.config.{js,cjs,mjs}',
+  '.config/typedoc.{js,cjs,mjs,json,jsonc}',
+  '.config/typedoc.config.{js,cjs,mjs}',
   'package.json',
   'tsconfig.json',
 ];

packages/knip/src/plugins/unocss/index.ts

@@ -1,16 +1,17 @@
 import type { EnablerPatterns } from '#p/types/config.js';
 import type { IsPluginEnabled, Plugin } from '#p/types/plugins.js';
-import { hasDependency } from '#p/util/plugin.js';
+import { hasDependency, toUnconfig } from '#p/util/plugin.js';
 
 // https://unocss.dev/guide/config-file
+// https://github.com/unocss/unocss/blob/main/packages/config/src/index.ts
 
 const title = 'UnoCSS';
 
 const enablers: EnablerPatterns = ['unocss'];
 
 const isEnabled: IsPluginEnabled = ({ dependencies }) => hasDependency(dependencies, enablers);
 
-const config: string[] = ['uno.config.{js,ts,mjs,mts}', 'unocss.config.{js,ts,mjs,mts}'];
+const config = [...toUnconfig('uno.config'), ...toUnconfig('unocss.config')];
 
 export default {
   title,

packages/knip/src/plugins/xo/index.ts

@@ -5,6 +5,8 @@ import { getDependenciesDeep } from '../eslint/helpers.js';
 import type { XOConfig } from './types.js';
 
 // link to xo docs: https://github.com/xojs/xo#config
+// Uses custom cosmiconfig search paths
+// https://github.com/xojs/xo/blob/ee9f0a3d72d55df098fc321c4d54a1ea3804e226/lib/constants.js
 
 const title = 'xo';
 
@@ -14,9 +16,9 @@ const isEnabled: IsPluginEnabled = ({ dependencies, config }) =>
   hasDependency(dependencies, enablers) || 'xo' in config;
 
 const packageJsonPath = 'xo';
-const config: string[] = ['{.,}xo-config.{js,cjs,json,}', 'package.json'];
+const config = ['package.json', '.xo-config', '.xo-config.{js,cjs,json}', 'xo.config.{js,cjs}'];
 
-const entry: string[] = ['{.,}xo-config.{js,cjs}'];
+const entry: string[] = ['.xo-config.{js,cjs}', 'xo.config.{js,cjs}'];
 
 const resolveConfig: ResolveConfig<XOConfig> = async (config, options) => {
   const dependencies = await getDependenciesDeep(config, options);