chore: more strict type checks

Author: pi0

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
           cache: "pnpm"
       - run: pnpm install
       - run: pnpm lint
-      - run: pnpm typecheck
+      - run: pnpm test:types
       - run: pnpm build
       - run: pnpm vitest --coverage
       - uses: codecov/codecov-action@v5

package.json

@@ -27,8 +27,8 @@
     "prepack": "unbuild",
     "release": "pnpm test && changelogen --release --push && pnpm publish",
     "benchmark": "node benchmark/object-hash.mjs",
-    "test": "pnpm lint && vitest run && pnpm typecheck",
-    "typecheck": "tsc --noEmit"
+    "test": "pnpm lint && vitest run && pnpm test:types",
+    "test:types": "tsc --noEmit"
   },
   "devDependencies": {
     "@types/node": "^22.10.5",

src/crypto/sha256.ts

@@ -35,12 +35,12 @@ export class SHA256 extends Hasher {
   /**
    * Resets the internal state of the hash object to initial values.
    */
-  reset() {
+  override reset() {
     super.reset();
     this._hash = new WordArray([...H]);
   }
 
-  _doProcessBlock(M: number[], offset: number) {
+  override _doProcessBlock(M: number[], offset: number) {
     // Shortcut
     const H = this._hash.words;
 
@@ -116,7 +116,7 @@ export class SHA256 extends Hasher {
    * @param {string} messageUpdate - Additional message content to include in the hash.
    * @returns {WordArray} The finalised hash as a WordArray.
    */
-  finalize(messageUpdate: string): WordArray {
+  override finalize(messageUpdate: string): WordArray {
     super.finalize(messageUpdate);
 
     const nBitsTotal = this._nDataBytes * 8;

src/hash/hash.ts

@@ -1,4 +1,4 @@
-import { objectHash, HashOptions } from "./object-hash";
+import { objectHash, type HashOptions } from "./object-hash";
 import { sha256base64 } from "../crypto/sha256";
 
 /**

src/utils/diff.ts

@@ -1,4 +1,4 @@
-import { objectHash, HashOptions } from "../hash/object-hash";
+import { objectHash, type HashOptions } from "../hash/object-hash";
 
 /**
  * Calculates the difference between two objects and returns a list of differences.

src/utils/is-equal.ts

@@ -1,4 +1,4 @@
-import { objectHash, HashOptions } from "../hash/object-hash";
+import { objectHash, type HashOptions } from "../hash/object-hash";
 /**
  * Compare two objects using reference equality and stable deep hashing.
  * @param {any} object1 First object

tsconfig.json

@@ -1,11 +1,17 @@
 {
   "compilerOptions": {
     "target": "ESNext",
-    "module": "ESNext",
-    "moduleResolution": "Node",
+    "module": "preserve",
+    "moduleDetection": "force",
     "esModuleInterop": true,
-    "types": ["node"],
-    "strict": true
-  },
-  "include": ["src"]
+    "allowSyntheticDefaultImports": true,
+    "allowJs": true,
+    "resolveJsonModule": true,
+    "strict": true,
+    "isolatedModules": true,
+    "verbatimModuleSyntax": true,
+    "forceConsistentCasingInFileNames": true,
+    "noImplicitOverride": true,
+    "noEmit": true
+  }
 }