Use typescript erasableSyntaxOnly: true

Author: paulmillr

src/_blake.ts

@@ -50,10 +50,12 @@ export abstract class BLAKE<T extends BLAKE<T>> extends Hash<T> {
   protected pos: number = 0;
   protected finished = false;
   protected destroyed = false;
+  readonly blockLen: number;
+  readonly outputLen: number;
 
   constructor(
-    readonly blockLen: number,
-    public outputLen: number,
+    blockLen: number,
+    outputLen: number,
     opts: BlakeOpts | undefined = {},
     keyLen: number,
     saltLen: number,
@@ -70,6 +72,8 @@ export abstract class BLAKE<T extends BLAKE<T>> extends Hash<T> {
       throw new Error('salt must be undefined or ' + saltLen);
     if (opts.personalization !== undefined && opts.personalization.length !== persLen)
       throw new Error('personalization must be undefined or ' + persLen);
+    this.blockLen = blockLen;
+    this.outputLen = outputLen;
     this.buffer = new Uint8Array(blockLen);
     this.buffer32 = u32(this.buffer);
   }
@@ -139,6 +143,7 @@ export abstract class BLAKE<T extends BLAKE<T>> extends Hash<T> {
     to.length = length;
     to.finished = finished;
     to.destroyed = destroyed;
+    // @ts-ignore
     to.outputLen = outputLen;
     to.buffer.set(buffer);
     to.pos = pos;

src/_md.ts

@@ -43,6 +43,12 @@ export abstract class HashMD<T extends HashMD<T>> extends Hash<T> {
   protected abstract set(...args: number[]): void;
   abstract destroy(): void;
   protected abstract roundClean(): void;
+
+  readonly blockLen: number;
+  readonly outputLen: number;
+  readonly padOffset: number;
+  readonly isLE: boolean;
+
   // For partial updates less than block size
   protected buffer: Uint8Array;
   protected view: DataView;
@@ -51,13 +57,12 @@ export abstract class HashMD<T extends HashMD<T>> extends Hash<T> {
   protected pos = 0;
   protected destroyed = false;
 
-  constructor(
-    readonly blockLen: number,
-    public outputLen: number,
-    readonly padOffset: number,
-    readonly isLE: boolean
-  ) {
+  constructor(blockLen: number, outputLen: number, padOffset: number, isLE: boolean) {
     super();
+    this.blockLen = blockLen;
+    this.outputLen = outputLen;
+    this.padOffset = padOffset;
+    this.isLE = isLE;
     this.buffer = new Uint8Array(blockLen);
     this.view = createView(this.buffer);
   }

src/blake1.ts

@@ -49,16 +49,27 @@ abstract class Blake1<T extends Blake1<T>> extends Hash<T> {
   abstract compress(view: DataView, offset: number, withLength?: boolean): void;
   protected abstract get(): number[];
   protected abstract set(...args: number[]): void;
+
+  readonly blockLen: number;
+  readonly outputLen: number;
+  private lengthFlag: number;
+  private counterLen: number;
+  protected constants: Uint32Array;
+
   constructor(
-    readonly blockLen: number,
-    readonly outputLen: number,
-    private lengthFlag: number,
-    private counterLen: number,
+    blockLen: number,
+    outputLen: number,
+    lengthFlag: number,
+    counterLen: number,
     saltLen: number,
-    protected constants: Uint32Array,
+    constants: Uint32Array,
     opts: BlakeOpts = {}
   ) {
     super();
+    this.blockLen = blockLen;
+    this.outputLen = outputLen;
+    this.lengthFlag = lengthFlag;
+    this.counterLen = counterLen;
     this.buffer = new Uint8Array(blockLen);
     this.view = createView(this.buffer);
     if (opts.salt) {
@@ -73,6 +84,7 @@ abstract class Blake1<T extends Blake1<T>> extends Hash<T> {
       }
     } else {
       this.salt = EMPTY_SALT;
+      this.constants = constants;
     }
   }
   update(data: Input): this {
@@ -385,12 +397,7 @@ class Blake1_64 extends Blake1<Blake1_64> {
   private v6h: number;
   private v7l: number;
   private v7h: number;
-  constructor(
-    public outputLen: number,
-    IV: Uint32Array,
-    lengthFlag: number,
-    opts: BlakeOpts = {}
-  ) {
+  constructor(outputLen: number, IV: Uint32Array, lengthFlag: number, opts: BlakeOpts = {}) {
     super(128, outputLen, lengthFlag, 16, 8, C512, opts);
     this.v0l = IV[0] | 0;
     this.v0h = IV[1] | 0;

src/blake3.ts

@@ -28,15 +28,15 @@ import {
 } from './utils.js';
 
 // Flag bitset
-const enum B3_Flags {
-  CHUNK_START = 1 << 0,
-  CHUNK_END = 1 << 1,
-  PARENT = 1 << 2,
-  ROOT = 1 << 3,
-  KEYED_HASH = 1 << 4,
-  DERIVE_KEY_CONTEXT = 1 << 5,
-  DERIVE_KEY_MATERIAL = 1 << 6,
-}
+const B3_Flags = {
+  CHUNK_START: 1 << 0,
+  CHUNK_END: 1 << 1,
+  PARENT: 1 << 2,
+  ROOT: 1 << 3,
+  KEYED_HASH: 1 << 4,
+  DERIVE_KEY_CONTEXT: 1 << 5,
+  DERIVE_KEY_MATERIAL: 1 << 6,
+} as const;
 
 const SIGMA: Uint8Array = /* @__PURE__ */ (() => {
   const Id = Array.from({ length: 16 }, (_, i) => i);
@@ -72,8 +72,8 @@ export class BLAKE3 extends BLAKE<BLAKE3> implements HashXOF<BLAKE3> {
   private enableXOF = true;
 
   constructor(opts: Blake3Opts = {}, flags = 0) {
-    super(64, opts.dkLen === undefined ? 32 : opts.dkLen, {}, Number.MAX_SAFE_INTEGER, 0, 0);
-    this.outputLen = opts.dkLen === undefined ? 32 : opts.dkLen;
+    const olen = opts.dkLen === undefined ? 32 : opts.dkLen;
+    super(64, olen, {}, Number.MAX_SAFE_INTEGER, 0, 0);
     anumber(this.outputLen);
     if (opts.key !== undefined && opts.context !== undefined)
       throw new Error('Blake3: only key or context can be specified at same time');

src/sha256.ts

@@ -46,8 +46,8 @@ export class SHA256 extends HashMD<SHA256> {
   protected G: number = SHA256_IV[6] | 0;
   protected H: number = SHA256_IV[7] | 0;
 
-  constructor() {
-    super(64, 32, 8, false);
+  constructor(outputLen: number = 32) {
+    super(64, outputLen, 8, false);
   }
   protected get(): [number, number, number, number, number, number, number, number] {
     const { A, B, C, D, E, F, G, H } = this;
@@ -125,8 +125,7 @@ class SHA224 extends SHA256 {
   protected G = 0x64f98fa7 | 0;
   protected H = 0xbefa4fa4 | 0;
   constructor() {
-    super();
-    this.outputLen = 28;
+    super(28);
   }
 }
 

src/sha3-addons.ts

@@ -214,18 +214,20 @@ type ParallelOpts = cShakeOpts & { blockLen?: number };
 
 export class ParallelHash extends Keccak implements HashXOF<ParallelHash> {
   private leafHash?: Hash<Keccak>;
+  protected leafCons: () => Hash<Keccak>;
   private chunkPos = 0; // Position of current block in chunk
   private chunksDone = 0; // How many chunks we already have
   private chunkLen: number;
   constructor(
     blockLen: number,
     outputLen: number,
-    protected leafCons: () => Hash<Keccak>,
+    leafCons: () => Hash<Keccak>,
     enableXOF: boolean,
     opts: ParallelOpts = {}
   ) {
     super(blockLen, 0x1f, outputLen, enableXOF);
     cshakePers(this, { NISTfn: 'ParallelHash', personalization: opts.personalization });
+    this.leafCons = leafCons;
     let { blockLen: B } = opts;
     B ||= 8;
     anumber(B);
@@ -344,17 +346,19 @@ const EMPTY = new Uint8Array([]);
 export class KangarooTwelve extends Keccak implements HashXOF<KangarooTwelve> {
   readonly chunkLen = 8192;
   private leafHash?: Keccak;
+  protected leafLen: number;
   private personalization: Uint8Array;
   private chunkPos = 0; // Position of current block in chunk
   private chunksDone = 0; // How many chunks we already have
   constructor(
     blockLen: number,
-    protected leafLen: number,
+    leafLen: number,
     outputLen: number,
     rounds: number,
     opts: KangarooOpts
   ) {
     super(blockLen, 0x07, outputLen, true, rounds);
+    this.leafLen = leafLen;
     const { personalization } = opts;
     this.personalization = toBytesOptional(personalization);
   }

src/sha3.ts

@@ -107,15 +107,27 @@ export class Keccak extends Hash<Keccak> implements HashXOF<Keccak> {
   protected finished = false;
   protected state32: Uint32Array;
   protected destroyed = false;
+
+  public blockLen: number;
+  public suffix: number;
+  public outputLen: number;
+  protected enableXOF = false;
+  protected rounds: number;
+
   // NOTE: we accept arguments in bytes instead of bits here.
   constructor(
-    public blockLen: number,
-    public suffix: number,
-    public outputLen: number,
-    protected enableXOF = false,
-    protected rounds: number = 24
+    blockLen: number,
+    suffix: number,
+    outputLen: number,
+    enableXOF = false,
+    rounds: number = 24
   ) {
     super();
+    this.blockLen = blockLen;
+    this.suffix = suffix;
+    this.outputLen = outputLen;
+    this.enableXOF = enableXOF;
+    this.rounds = rounds;
     // Can be passed from user as dkLen
     anumber(outputLen);
     // 1600 = 5x5 matrix of 64bit.  1600 bits === 200 bytes

src/sha512.ts

@@ -59,8 +59,8 @@ export class SHA512 extends HashMD<SHA512> {
   protected Hh: number = 0x5be0cd19 | 0;
   protected Hl: number = 0x137e2179 | 0;
 
-  constructor() {
-    super(128, 64, 16, false);
+  constructor(outputLen: number = 64) {
+    super(128, outputLen, 16, false);
   }
   // prettier-ignore
   protected get(): [
@@ -192,8 +192,7 @@ export class SHA512_224 extends SHA512 {
   protected Hl: number = 0x91d692a1 | 0;
 
   constructor() {
-    super();
-    this.outputLen = 28;
+    super(28);
   }
 }
 
@@ -217,8 +216,7 @@ export class SHA512_256 extends SHA512 {
   protected Hl: number = 0x81c52ca2 | 0;
 
   constructor() {
-    super();
-    this.outputLen = 32;
+    super(32);
   }
 }
 
@@ -242,8 +240,7 @@ export class SHA384 extends SHA512 {
   protected Hl: number = 0xbefa4fa4 | 0;
 
   constructor() {
-    super();
-    this.outputLen = 48;
+    super(48);
   }
 }