diff --git a/__tests__/baselines/lib.ts b/__tests__/baselines/lib.ts
new file mode 100644
index 00000000..dd1fceca
--- /dev/null
+++ b/__tests__/baselines/lib.ts
@@ -0,0 +1,90 @@
+/**
+ * @file Test Baselines - LIB
+ * @module tests/baselines/LIB
+ */
+
+export default [
+  'decorators.legacy',
+  'decorators',
+  'dom.iterable',
+  'dom',
+  'es5',
+  'es6',
+  'es7',
+  'es2015.collection',
+  'es2015.core',
+  'es2015.generator',
+  'es2015.iterable',
+  'es2015.promise',
+  'es2015.proxy',
+  'es2015.reflect',
+  'es2015.symbol.wellknown',
+  'es2015.symbol',
+  'es2015',
+  'es2016.array.include',
+  'es2016.full',
+  'es2016',
+  'es2017.full',
+  'es2017.intl',
+  'es2017.object',
+  'es2017.sharedmemory',
+  'es2017.string',
+  'es2017.typedarrays',
+  'es2017',
+  'es2018.asyncgenerator',
+  'es2018.asynciterable',
+  'es2018.full',
+  'es2018.intl',
+  'es2018.promise',
+  'es2018.regexp',
+  'es2018',
+  'es2019.array',
+  'es2019.full',
+  'es2019.intl',
+  'es2019.object',
+  'es2019.string',
+  'es2019.symbol',
+  'es2019',
+  'es2020.bigint',
+  'es2020.date',
+  'es2020.full',
+  'es2020.intl',
+  'es2020.number',
+  'es2020.promise',
+  'es2020.sharedmemory',
+  'es2020.string',
+  'es2020.symbol.wellknown',
+  'es2020',
+  'es2021.full',
+  'es2021.intl',
+  'es2021.promise',
+  'es2021.string',
+  'es2021.weakref',
+  'es2021',
+  'es2022.array',
+  'es2022.error',
+  'es2022.full',
+  'es2022.intl',
+  'es2022.object',
+  'es2022.regexp',
+  'es2022.sharedmemory',
+  'es2022.string',
+  'es2022',
+  'es2023.array',
+  'es2023.full',
+  'es2023',
+  'esnext.array',
+  'esnext.asynciterable',
+  'esnext.bigint',
+  'esnext.full',
+  'esnext.intl',
+  'esnext.promise',
+  'esnext.string',
+  'esnext.symbol',
+  'esnext.weakref',
+  'esnext',
+  'scripthost',
+  'webworker.importscripts',
+  'webworker.iterable',
+  'webworker'
+] as const
diff --git a/package.json b/package.json
index 51236574..4deeb55d 100644
--- a/package.json
+++ b/package.json
@@ -72,7 +72,7 @@
     "@flex-development/errnode": "1.5.0",
     "@flex-development/mlly": "1.0.0-alpha.9",
     "@flex-development/pathe": "1.0.3",
-    "@flex-development/tsconfig-types": "3.0.0",
+    "@flex-development/tsconfig-types": "3.2.0",
     "@flex-development/tutils": "6.0.0-alpha.10",
     "merge-anything": "5.1.4",
     "sort-keys": "5.0.0",
diff --git a/src/utils/__tests__/lib.spec-d.ts b/src/utils/__tests__/lib.spec-d.ts
new file mode 100644
index 00000000..d4e486f1
--- /dev/null
+++ b/src/utils/__tests__/lib.spec-d.ts
@@ -0,0 +1,17 @@
+/**
+ * @file Type Tests - LIB
+ * @module tsconfig-utils/utils/tests/unit-d/LIB
+ */
+
+import type { Lib, LibFile } from '@flex-development/tsconfig-types'
+import type TEST_SUBJECT from '../lib'
+
+describe('unit-d:utils/LIB', () => {
+  it('should equal type of Map<Lowercase<Lib>, LibFile>', () => {
+    // Arrange
+    type Expected = Map<Lowercase<Lib>, LibFile>
+
+    // Expect
+    expectTypeOf<typeof TEST_SUBJECT>().toEqualTypeOf<Expected>()
+  })
+})
diff --git a/src/utils/__tests__/lib.spec.ts b/src/utils/__tests__/lib.spec.ts
new file mode 100644
index 00000000..72517e36
--- /dev/null
+++ b/src/utils/__tests__/lib.spec.ts
@@ -0,0 +1,23 @@
+/**
+ * @file Unit Tests - LIB
+ * @module tsconfig-utils/utils/tests/unit/LIB
+ */
+
+import BASELINE from '#tests/baselines/lib'
+import TEST_SUBJECT from '../lib'
+
+describe('unit:utils/LIB', () => {
+  it('should be instance of Map', () => {
+    expect(TEST_SUBJECT).to.be.instanceof(Map)
+  })
+
+  it('should contain lib names', () => {
+    expect([...TEST_SUBJECT.keys()]).to.deep.equal(BASELINE)
+  })
+
+  it('should map lib names to lib filenames', () => {
+    for (const [name, filename] of TEST_SUBJECT.entries()) {
+      expect(filename).to.equal(`lib.${name}.d.ts`)
+    }
+  })
+})
diff --git a/src/utils/index.ts b/src/utils/index.ts
index d0da1e43..58559e6b 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -4,6 +4,7 @@
  */
 
 export { default as COMPILER_OPTIONS } from './compiler-options'
+export { default as LIB } from './lib'
 export { default as loadCompilerOptions } from './load-compiler-options'
 export { default as loadLibConfig } from './load-lib-config'
 export { default as loadPathAliases } from './load-path-aliases'
diff --git a/src/utils/lib.ts b/src/utils/lib.ts
new file mode 100644
index 00000000..aab851fe
--- /dev/null
+++ b/src/utils/lib.ts
@@ -0,0 +1,104 @@
+/**
+ * @file Utilities - LIB
+ * @module tsconfig-utils/utils/LIB
+ */
+
+import type { Lib, LibFile } from '@flex-development/tsconfig-types'
+
+/**
+ * Maps lowercase [lib names][1] to files in the `node_modules/typescript/lib`
+ * directory.
+ *
+ * [1]: https://www.typescriptlang.org/tsconfig#lib
+ *
+ * @const {Map<Lowercase<Lib>, LibFile>} LIB
+ */
+const LIB: Map<Lowercase<Lib>, LibFile> = new Map<Lowercase<Lib>, LibFile>(
+  [
+    'decorators.legacy',
+    'decorators',
+    'dom.iterable',
+    'dom',
+    'es5',
+    'es6',
+    'es7',
+    'es2015.collection',
+    'es2015.core',
+    'es2015.generator',
+    'es2015.iterable',
+    'es2015.promise',
+    'es2015.proxy',
+    'es2015.reflect',
+    'es2015.symbol.wellknown',
+    'es2015.symbol',
+    'es2015',
+    'es2016.array.include',
+    'es2016.full',
+    'es2016',
+    'es2017.full',
+    'es2017.intl',
+    'es2017.object',
+    'es2017.sharedmemory',
+    'es2017.string',
+    'es2017.typedarrays',
+    'es2017',
+    'es2018.asyncgenerator',
+    'es2018.asynciterable',
+    'es2018.full',
+    'es2018.intl',
+    'es2018.promise',
+    'es2018.regexp',
+    'es2018',
+    'es2019.array',
+    'es2019.full',
+    'es2019.intl',
+    'es2019.object',
+    'es2019.string',
+    'es2019.symbol',
+    'es2019',
+    'es2020.bigint',
+    'es2020.date',
+    'es2020.full',
+    'es2020.intl',
+    'es2020.number',
+    'es2020.promise',
+    'es2020.sharedmemory',
+    'es2020.string',
+    'es2020.symbol.wellknown',
+    'es2020',
+    'es2021.full',
+    'es2021.intl',
+    'es2021.promise',
+    'es2021.string',
+    'es2021.weakref',
+    'es2021',
+    'es2022.array',
+    'es2022.error',
+    'es2022.full',
+    'es2022.intl',
+    'es2022.object',
+    'es2022.regexp',
+    'es2022.sharedmemory',
+    'es2022.string',
+    'es2022',
+    'es2023.array',
+    'es2023.full',
+    'es2023',
+    'esnext.array',
+    'esnext.asynciterable',
+    'esnext.bigint',
+    'esnext.full',
+    'esnext.intl',
+    'esnext.promise',
+    'esnext.string',
+    'esnext.symbol',
+    'esnext.weakref',
+    'esnext',
+    'scripthost',
+    'webworker.importscripts',
+    'webworker.iterable',
+    'webworker'
+  ].map(name => [name, `lib.${name}.d.ts`] as [Lowercase<Lib>, LibFile])
+)
+
+export default LIB
diff --git a/yarn.lock b/yarn.lock
index 0a15a518..ef58fa80 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1299,13 +1299,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@flex-development/tsconfig-types@npm:3.0.0":
-  version: 3.0.0
-  resolution: "@flex-development/tsconfig-types@npm:3.0.0::__archiveUrl=https%3A%2F%2Fnpm.pkg.github.com%2Fdownload%2F%40flex-development%2Ftsconfig-types%2F3.0.0%2Ffcd2cf1f02f3377a624b44c74aad985ee804121c"
+"@flex-development/tsconfig-types@npm:3.2.0":
+  version: 3.2.0
+  resolution: "@flex-development/tsconfig-types@npm:3.2.0::__archiveUrl=https%3A%2F%2Fnpm.pkg.github.com%2Fdownload%2F%40flex-development%2Ftsconfig-types%2F3.2.0%2Fe49eb5faa42583a340fdff7c9ec64ac5feaf4529"
   dependencies:
     "@flex-development/pkg-types": "npm:2.0.0"
     "@flex-development/tutils": "npm:6.0.0-alpha.10"
-  checksum: ad6d09fd4ac41349d928f10a77bf83d23c02215c0036a4794b49d825a693b310c043204440e47ac2bb3aa10a64c26f729a97ef6d1240d50daaa1a8f25af51fae
+  checksum: 3955eb124d092798c32f3d72f8b9c79e97464ad3f20521b448f1432a64762f939f04fb983299d5d38c5e0963ab4efad71f9e262a27101cc4e571e1e50f5afdf8
   languageName: node
   linkType: hard
 
@@ -1320,7 +1320,7 @@ __metadata:
     "@flex-development/mkbuild": "npm:1.0.0-alpha.9"
     "@flex-development/mlly": "npm:1.0.0-alpha.9"
     "@flex-development/pathe": "npm:1.0.3"
-    "@flex-development/tsconfig-types": "npm:3.0.0"
+    "@flex-development/tsconfig-types": "npm:3.2.0"
     "@flex-development/tutils": "npm:6.0.0-alpha.10"
     "@graphql-eslint/eslint-plugin": "npm:3.15.0"
     "@types/chai": "npm:4.3.4"