Add optional seed parameter for hashString(), use nodenext module resolution in tsconfig.json

Author: AlexeyMz

README.md

@@ -99,10 +99,12 @@ TypeScript interface for a read-only version of a `HashMap` which is compatible
 
 TypeScript interface for a read-only version of a `HashSet` which is compatible with `ReadonlySet`.
 
-#### `hashString(value: string): number` function
+#### `hashString(value: string, seed?: number): number` function
 
 Utility function to compute a string hash using [FNV-32a](https://en.wikipedia.org/wiki/Fowler%E2%80%93Noll%E2%80%93Vo_hash_function) algorithm.
 
+Default seed is `0x811c9dc5`.
+
 #### `hashNumber(value: number): number` function
 
 Utility function to compute a hash for a JS number:

src/hashCode.ts

@@ -24,8 +24,8 @@ export function dropHighestNonSignBit(i32: number): number {
     return ((i32 >>> 1) & 0x40000000) | (i32 & 0xBFFFFFFF);
 }
 
-export function hashString(str: string): number {
-    return hashFnv32a(str);
+export function hashString(str: string, seed?: number): number {
+    return hashFnv32a(str, seed);
 }
 
 const NUMBER_BITS = new ArrayBuffer(8);

src/index.ts

@@ -1,7 +1,7 @@
 export {
     chainHash, dropHighestNonSignBit, hashBigInt, hashNumber, hashString,
     hashTuple, hashValue,
-} from './hashCode';
+} from './hashCode.js';
 export {
     HashMap, HashSet, type ReadonlyHashMap, type ReadonlyHashSet,
-} from './hashMap';
+} from './hashMap.js';

tsconfig.json

@@ -1,8 +1,8 @@
 {
     "compilerOptions": {
         "target": "es2021",
-        "module": "ESNext",
-        "moduleResolution": "bundler",
+        "module": "NodeNext",
+        "moduleResolution": "nodenext",
         "forceConsistentCasingInFileNames": true,
         "isolatedModules": true,
         "strict": true,