diff --git a/.attw.json b/.attw.json
new file mode 100644
index 0000000..de5330c
--- /dev/null
+++ b/.attw.json
@@ -0,0 +1,3 @@
+{
+  "ignoreRules": ["no-resolution"]
+}
diff --git a/package.json b/package.json
index 49f48cc..5a40ec6 100644
--- a/package.json
+++ b/package.json
@@ -37,6 +37,20 @@
         "types": "./artifacts/dist/esm/index.d.ts",
         "default": "./artifacts/dist/esm/index.js"
       }
+    },
+    "./declare": {
+      "import": {
+        "types": "./artifacts/dist/esm/declare.d.ts",
+        "default": "./artifacts/dist/esm/declare.js"
+      },
+      "require": {
+        "types": "./artifacts/dist/cjs/declare.d.ts",
+        "default": "./artifacts/dist/cjs/declare.js"
+      },
+      "default": {
+        "types": "./artifacts/dist/esm/declare.d.ts",
+        "default": "./artifacts/dist/esm/declare.js"
+      }
     }
   },
   "sideEffects": false,
diff --git a/src/environment.ts b/src/environment.ts
index 60c49be..f55bd67 100644
--- a/src/environment.ts
+++ b/src/environment.ts
@@ -1,10 +1,3 @@
-import { EOL } from "os";
-import {
-  render as renderSpecification,
-  type MarkdownPrettyPrintType,
-} from "./specification.js";
-import { render as renderSummary } from "./summary.js";
-import { Results, validate } from "./validation.js";
 import {
   createVariableComposite,
   type VariableComposite,
@@ -12,38 +5,7 @@ import {
 } from "./variable-composite.js";
 import { Variable, VariableSpec, createVariable } from "./variable.js";
 
-let state: State = createInitialState();
-
-export type InitializeOptions = {
-  readonly onInvalid?: OnInvalid;
-  readonly markdownPrettyPrint?: MarkdownPrettyPrintType;
-};
-
-export async function initialize(
-  options: InitializeOptions = {},
-): Promise<void> {
-  if (process.env.AUSTENITE_SPEC === "true") {
-    const { markdownPrettyPrint = "prettier" } = options;
-    console.log(
-      await renderSpecification(markdownPrettyPrint, variablesByName()),
-    );
-
-    // eslint-disable-next-line n/no-process-exit
-    process.exit(0);
-  } else {
-    const { onInvalid = defaultOnInvalid } = options;
-    const [isValid, results] = validate(variablesByName(), state.composites);
-
-    if (!isValid) {
-      onInvalid({
-        results,
-        defaultHandler() {
-          defaultOnInvalid({ results });
-        },
-      });
-    }
-  }
-}
+export let state: State = createInitialState();
 
 export function registerVariable<T>(spec: VariableSpec<T>): Variable<T> {
   const variable = createVariable(spec);
@@ -88,28 +50,10 @@ function createInitialState(): State {
   };
 }
 
-function defaultOnInvalid({ results }: { results: Results }): never {
-  console.error(
-    ["Environment Variables:", "", renderSummary(results)].join(EOL),
-  );
-
-  // eslint-disable-next-line n/no-process-exit
-  process.exit(1);
-
-  return undefined as never;
-}
-
-function variablesByName(): Variable<unknown>[] {
+export function variablesByName(): Variable<unknown>[] {
   return Object.values(state.variables).sort(compareVariableNames);
 }
 
 function compareVariableNames(a: Variable<unknown>, b: Variable<unknown>) {
   return a.spec.name.localeCompare(b.spec.name);
 }
-
-export type OnInvalid = (args: OnInvalidArgs) => void;
-
-type OnInvalidArgs = {
-  readonly results: Results;
-  readonly defaultHandler: () => never;
-};
diff --git a/src/index.ts b/src/index.ts
index ab83812..c6c19b1 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,2 +1,2 @@
-export { initialize } from "./environment.js";
-export type { OnInvalid } from "./environment.js";
+export { initialize } from "./initialize.js";
+export type { OnInvalid } from "./initialize.js";
diff --git a/src/initialize.ts b/src/initialize.ts
new file mode 100644
index 0000000..203f8c0
--- /dev/null
+++ b/src/initialize.ts
@@ -0,0 +1,57 @@
+import { EOL } from "os";
+import { state, variablesByName } from "./environment.js";
+import {
+  render as renderSpecification,
+  type MarkdownPrettyPrintType,
+} from "./specification.js";
+import { render as renderSummary } from "./summary.js";
+import { validate, type Results } from "./validation.js";
+
+export async function initialize(
+  options: InitializeOptions = {},
+): Promise<void> {
+  if (process.env.AUSTENITE_SPEC === "true") {
+    const { markdownPrettyPrint = "prettier" } = options;
+    console.log(
+      await renderSpecification(markdownPrettyPrint, variablesByName()),
+    );
+
+    // eslint-disable-next-line n/no-process-exit
+    process.exit(0);
+  } else {
+    const { onInvalid = defaultOnInvalid } = options;
+    const [isValid, results] = validate(variablesByName(), state.composites);
+
+    if (!isValid) {
+      onInvalid({
+        results,
+        defaultHandler() {
+          defaultOnInvalid({ results });
+        },
+      });
+    }
+  }
+}
+
+export function defaultOnInvalid({ results }: { results: Results }): never {
+  console.error(
+    ["Environment Variables:", "", renderSummary(results)].join(EOL),
+  );
+
+  // eslint-disable-next-line n/no-process-exit
+  process.exit(1);
+
+  return undefined as never;
+}
+
+export type InitializeOptions = {
+  readonly onInvalid?: OnInvalid;
+  readonly markdownPrettyPrint?: MarkdownPrettyPrintType;
+};
+
+export type OnInvalid = (args: OnInvalidArgs) => void;
+
+type OnInvalidArgs = {
+  readonly results: Results;
+  readonly defaultHandler: () => never;
+};