*Update dist

* Update stale.yml

* Update funding.yml

* Update to tag with meta-stable label

* Removed extra https in funding url

.github/FUNDING.yml

@@ -1 +1 @@
-custom: https://gitcoin.co/grants/79/lodestar-eth20-client
+custom: https://gitcoin.co/grants/6034/lodestar-typescript-ethereum-consensus-client

.github/stale.yml

@@ -12,18 +12,17 @@ onlyLabels: []
 
 # Issues or Pull Requests with these labels will never be considered stale. Set to `[]` to disable
 exemptLabels:
-   - "PR state: on-ice"
-   - "Good First Issue"
-   - "Status: On Ice"
-   - "Priority: 4 - Low"
-   - "Priority: 3 - Medium"
-   - "Priority: 2 - High"
-   - "Priority: 1 - Critical"
-   - "discussion"
-   - "Discussion"
-   - "Epic"
-   - "Good First Issue"
-   - "help wanted"
+  - "Epic"
+  - "meta-good-first-issue"
+  - "meta-help-wanted"
+  - "meta-discussion"
+  - "meta-pm"
+  - "prio-critical"
+  - "prio-high"
+  - "prio-medium"
+  - "prio-low"
+  - "status-blocked"
+  - "status-do-not-merge"
 
 # Set to true to ignore issues in a project (defaults to false)
 exemptProjects: false
@@ -35,7 +34,7 @@ exemptMilestones: true
 exemptAssignees: true
 
 # Label to use when marking as stale
-staleLabel: bot:stale
+staleLabel: meta-stale
 
 # Comment to post when marking as stale. Set to `false` to disable
 markComment: >

README.md

@@ -22,24 +22,22 @@ yarn add @chainsafe/bls @chainsafe/blst
 By default, native bindings will be used if in NodeJS and they are installed. A WASM implementation ("herumi") is used as a fallback in case any error occurs.
 
 ```ts
-import {SecretKey, secretKeyToPublicKey, sign, verify} from "@chainsafe/bls";
+import bls from "@chainsafe/bls";
 
 (async () => {
-  await init("herumi");
+    // class-based interface
+    const secretKey = bls.SecretKey.fromKeygen();
+    const publicKey = secretKey.toPublicKey();
+    const message = new Uint8Array(32);
 
-  // class-based interface
-  const secretKey = SecretKey.fromKeygen();
-  const publicKey = secretKey.toPublicKey();
-  const message = new Uint8Array(32);
+    const signature = secretKey.sign(message);
+    console.log("Is valid: ", signature.verify(publicKey, message));
 
-  const signature = secretKey.sign(message);
-  console.log("Is valid: ", signature.verify(publicKey, message));
-
-  // functional interface
-  const sk = secretKey.toBytes();
-  const pk = secretKeyToPublicKey(sk);
-  const sig = sign(sk, message);
-  console.log("Is valid: ", verify(pk, message, sig));
+    // functional interface
+    const sk = secretKey.toBytes();
+    const pk = bls.secretKeyToPublicKey(sk);
+    const sig = bls.sign(sk, message);
+    console.log("Is valid: ", bls.verify(pk, message, sig));
 })();
 ```
 

lib/blst-native/index.d.ts

@@ -0,0 +1,8 @@
+import { SecretKey } from "./secretKey.js";
+import { PublicKey } from "./publicKey.js";
+import { Signature } from "./signature.js";
+import { IBls } from "../types.js";
+export * from "../constants.js";
+export { SecretKey, PublicKey, Signature };
+export declare const bls: IBls;
+export default bls;

lib/blst-native/index.js

@@ -0,0 +1,14 @@
+import { SecretKey } from "./secretKey.js";
+import { PublicKey } from "./publicKey.js";
+import { Signature } from "./signature.js";
+import { functionalInterfaceFactory } from "../functional.js";
+export * from "../constants.js";
+export { SecretKey, PublicKey, Signature };
+export const bls = {
+    implementation: "blst-native",
+    SecretKey,
+    PublicKey,
+    Signature,
+    ...functionalInterfaceFactory({ SecretKey, PublicKey, Signature }),
+};
+export default bls;

lib/blst-native/publicKey.d.ts

@@ -0,0 +1,11 @@
+import * as blst from "@chainsafe/blst";
+import { PointFormat, PublicKey as IPublicKey } from "../types.js";
+export declare class PublicKey extends blst.PublicKey implements IPublicKey {
+    constructor(value: ConstructorParameters<typeof blst.PublicKey>[0]);
+    /** @param type Defaults to `CoordType.jacobian` */
+    static fromBytes(bytes: Uint8Array, type?: blst.CoordType, validate?: boolean): PublicKey;
+    static fromHex(hex: string): PublicKey;
+    static aggregate(publicKeys: PublicKey[]): PublicKey;
+    toBytes(format?: PointFormat): Uint8Array;
+    toHex(format?: PointFormat): string;
+}

lib/blst-native/publicKey.js

@@ -0,0 +1,37 @@
+import * as blst from "@chainsafe/blst";
+import { EmptyAggregateError } from "../errors.js";
+import { bytesToHex, hexToBytes } from "../helpers/index.js";
+import { PointFormat } from "../types.js";
+export class PublicKey extends blst.PublicKey {
+    constructor(value) {
+        super(value);
+    }
+    /** @param type Defaults to `CoordType.jacobian` */
+    static fromBytes(bytes, type, validate) {
+        const pk = blst.PublicKey.fromBytes(bytes, type);
+        if (validate)
+            pk.keyValidate();
+        return new PublicKey(pk.value);
+    }
+    static fromHex(hex) {
+        return this.fromBytes(hexToBytes(hex));
+    }
+    static aggregate(publicKeys) {
+        if (publicKeys.length === 0) {
+            throw new EmptyAggregateError();
+        }
+        const pk = blst.aggregatePubkeys(publicKeys);
+        return new PublicKey(pk.value);
+    }
+    toBytes(format) {
+        if (format === PointFormat.uncompressed) {
+            return this.value.serialize();
+        }
+        else {
+            return this.value.compress();
+        }
+    }
+    toHex(format) {
+        return bytesToHex(this.toBytes(format));
+    }
+}

lib/blst-native/secretKey.d.ts

@@ -0,0 +1,15 @@
+import * as blst from "@chainsafe/blst";
+import { SecretKey as ISecretKey } from "../types.js";
+import { PublicKey } from "./publicKey.js";
+import { Signature } from "./signature.js";
+export declare class SecretKey implements ISecretKey {
+    readonly value: blst.SecretKey;
+    constructor(value: blst.SecretKey);
+    static fromBytes(bytes: Uint8Array): SecretKey;
+    static fromHex(hex: string): SecretKey;
+    static fromKeygen(entropy?: Uint8Array): SecretKey;
+    sign(message: Uint8Array): Signature;
+    toPublicKey(): PublicKey;
+    toBytes(): Uint8Array;
+    toHex(): string;
+}

lib/blst-native/secretKey.js

@@ -0,0 +1,39 @@
+import * as blst from "@chainsafe/blst";
+import { bytesToHex, hexToBytes, isZeroUint8Array, randomBytes } from "../helpers/index.js";
+import { SECRET_KEY_LENGTH } from "../constants.js";
+import { PublicKey } from "./publicKey.js";
+import { Signature } from "./signature.js";
+import { ZeroSecretKeyError } from "../errors.js";
+export class SecretKey {
+    constructor(value) {
+        this.value = value;
+    }
+    static fromBytes(bytes) {
+        // draft-irtf-cfrg-bls-signature-04 does not allow SK == 0
+        if (isZeroUint8Array(bytes)) {
+            throw new ZeroSecretKeyError();
+        }
+        const sk = blst.SecretKey.fromBytes(bytes);
+        return new SecretKey(sk);
+    }
+    static fromHex(hex) {
+        return this.fromBytes(hexToBytes(hex));
+    }
+    static fromKeygen(entropy) {
+        const sk = blst.SecretKey.fromKeygen(entropy || randomBytes(SECRET_KEY_LENGTH));
+        return new SecretKey(sk);
+    }
+    sign(message) {
+        return new Signature(this.value.sign(message).value);
+    }
+    toPublicKey() {
+        const pk = this.value.toPublicKey();
+        return new PublicKey(pk.value);
+    }
+    toBytes() {
+        return this.value.toBytes();
+    }
+    toHex() {
+        return bytesToHex(this.toBytes());
+    }
+}

lib/blst-native/signature.d.ts

@@ -0,0 +1,21 @@
+import * as blst from "@chainsafe/blst";
+import { PointFormat, Signature as ISignature } from "../types.js";
+import { PublicKey } from "./publicKey.js";
+export declare class Signature extends blst.Signature implements ISignature {
+    constructor(value: ConstructorParameters<typeof blst.Signature>[0]);
+    /** @param type Defaults to `CoordType.affine` */
+    static fromBytes(bytes: Uint8Array, type?: blst.CoordType, validate?: boolean): Signature;
+    static fromHex(hex: string): Signature;
+    static aggregate(signatures: Signature[]): Signature;
+    static verifyMultipleSignatures(sets: {
+        publicKey: PublicKey;
+        message: Uint8Array;
+        signature: Signature;
+    }[]): boolean;
+    verify(publicKey: PublicKey, message: Uint8Array): boolean;
+    verifyAggregate(publicKeys: PublicKey[], message: Uint8Array): boolean;
+    verifyMultiple(publicKeys: PublicKey[], messages: Uint8Array[]): boolean;
+    toBytes(format?: PointFormat): Uint8Array;
+    toHex(format?: PointFormat): string;
+    private aggregateVerify;
+}

lib/blst-native/signature.js

@@ -0,0 +1,62 @@
+import * as blst from "@chainsafe/blst";
+import { bytesToHex, hexToBytes } from "../helpers/index.js";
+import { PointFormat } from "../types.js";
+import { EmptyAggregateError, ZeroSignatureError } from "../errors.js";
+export class Signature extends blst.Signature {
+    constructor(value) {
+        super(value);
+    }
+    /** @param type Defaults to `CoordType.affine` */
+    static fromBytes(bytes, type, validate = true) {
+        const sig = blst.Signature.fromBytes(bytes, type);
+        if (validate)
+            sig.sigValidate();
+        return new Signature(sig.value);
+    }
+    static fromHex(hex) {
+        return this.fromBytes(hexToBytes(hex));
+    }
+    static aggregate(signatures) {
+        if (signatures.length === 0) {
+            throw new EmptyAggregateError();
+        }
+        const agg = blst.aggregateSignatures(signatures);
+        return new Signature(agg.value);
+    }
+    static verifyMultipleSignatures(sets) {
+        return blst.verifyMultipleAggregateSignatures(sets.map((s) => ({ msg: s.message, pk: s.publicKey, sig: s.signature })));
+    }
+    verify(publicKey, message) {
+        // Individual infinity signatures are NOT okay. Aggregated signatures MAY be infinity
+        if (this.value.is_inf()) {
+            throw new ZeroSignatureError();
+        }
+        return blst.verify(message, publicKey, this);
+    }
+    verifyAggregate(publicKeys, message) {
+        return blst.fastAggregateVerify(message, publicKeys, this);
+    }
+    verifyMultiple(publicKeys, messages) {
+        return blst.aggregateVerify(messages, publicKeys, this);
+    }
+    toBytes(format) {
+        if (format === PointFormat.uncompressed) {
+            return this.value.serialize();
+        }
+        else {
+            return this.value.compress();
+        }
+    }
+    toHex(format) {
+        return bytesToHex(this.toBytes(format));
+    }
+    aggregateVerify(msgs, pks) {
+        // If this set is simply an infinity signature and infinity publicKey then skip verification.
+        // This has the effect of always declaring that this sig/publicKey combination is valid.
+        // for Eth2.0 specs tests
+        if (this.value.is_inf() && pks.length === 1 && pks[0].value.is_inf()) {
+            return true;
+        }
+        return blst.aggregateVerify(msgs, pks, this);
+    }
+}

lib/constants.d.ts

@@ -0,0 +1,5 @@
+export declare const SECRET_KEY_LENGTH = 32;
+export declare const PUBLIC_KEY_LENGTH_COMPRESSED = 48;
+export declare const PUBLIC_KEY_LENGTH_UNCOMPRESSED: number;
+export declare const SIGNATURE_LENGTH_COMPRESSED = 96;
+export declare const SIGNATURE_LENGTH_UNCOMPRESSED: number;

lib/constants.js

@@ -0,0 +1,5 @@
+export const SECRET_KEY_LENGTH = 32;
+export const PUBLIC_KEY_LENGTH_COMPRESSED = 48;
+export const PUBLIC_KEY_LENGTH_UNCOMPRESSED = 48 * 2;
+export const SIGNATURE_LENGTH_COMPRESSED = 96;
+export const SIGNATURE_LENGTH_UNCOMPRESSED = 96 * 2;

lib/errors.d.ts

@@ -0,0 +1,25 @@
+/**
+ * This error should not be ignored by the functional interface
+ * try / catch blocks, to prevent false negatives
+ */
+export declare class NotInitializedError extends Error {
+    constructor(implementation: string);
+}
+export declare class ZeroSecretKeyError extends Error {
+    constructor();
+}
+export declare class ZeroPublicKeyError extends Error {
+    constructor();
+}
+export declare class ZeroSignatureError extends Error {
+    constructor();
+}
+export declare class EmptyAggregateError extends Error {
+    constructor();
+}
+export declare class InvalidOrderError extends Error {
+    constructor();
+}
+export declare class InvalidLengthError extends Error {
+    constructor(arg: string, length: number);
+}

lib/errors.js

@@ -0,0 +1,39 @@
+/**
+ * This error should not be ignored by the functional interface
+ * try / catch blocks, to prevent false negatives
+ */
+export class NotInitializedError extends Error {
+    constructor(implementation) {
+        super(`NOT_INITIALIZED: ${implementation}`);
+    }
+}
+export class ZeroSecretKeyError extends Error {
+    constructor() {
+        super("ZERO_SECRET_KEY");
+    }
+}
+export class ZeroPublicKeyError extends Error {
+    constructor() {
+        super("ZERO_PUBLIC_KEY");
+    }
+}
+export class ZeroSignatureError extends Error {
+    constructor() {
+        super("ZERO_SIGNATURE");
+    }
+}
+export class EmptyAggregateError extends Error {
+    constructor() {
+        super("EMPTY_AGGREGATE_ARRAY");
+    }
+}
+export class InvalidOrderError extends Error {
+    constructor() {
+        super("INVALID_ORDER");
+    }
+}
+export class InvalidLengthError extends Error {
+    constructor(arg, length) {
+        super(`INVALID_LENGTH: ${arg} - ${length} bytes`);
+    }
+}

lib/functional.d.ts

@@ -0,0 +1,15 @@
+import { IBls } from "./types.js";
+export declare function functionalInterfaceFactory({ SecretKey, PublicKey, Signature, }: Pick<IBls, "SecretKey" | "PublicKey" | "Signature">): {
+    sign: (secretKey: Uint8Array, message: Uint8Array) => Uint8Array;
+    aggregateSignatures: (signatures: Uint8Array[]) => Uint8Array;
+    aggregatePublicKeys: (publicKeys: Uint8Array[]) => Uint8Array;
+    verify: (publicKey: Uint8Array, message: Uint8Array, signature: Uint8Array) => boolean;
+    verifyAggregate: (publicKeys: Uint8Array[], message: Uint8Array, signature: Uint8Array) => boolean;
+    verifyMultiple: (publicKeys: Uint8Array[], messages: Uint8Array[], signature: Uint8Array) => boolean;
+    verifyMultipleSignatures: (sets: {
+        publicKey: Uint8Array;
+        message: Uint8Array;
+        signature: Uint8Array;
+    }[]) => boolean;
+    secretKeyToPublicKey: (secretKey: Uint8Array) => Uint8Array;
+};

lib/functional.js

@@ -0,0 +1,137 @@
+import { validateBytes } from "./helpers/index.js";
+import { NotInitializedError } from "./errors.js";
+// Returned type is enforced at each implementation's index
+// eslint-disable-next-line max-len
+// eslint-disable-next-line @typescript-eslint/explicit-function-return-type,@typescript-eslint/explicit-module-boundary-types
+export function functionalInterfaceFactory({ SecretKey, PublicKey, Signature, }) {
+    /**
+     * Signs given message using secret key.
+     * @param secretKey
+     * @param message
+     */
+    function sign(secretKey, message) {
+        validateBytes(secretKey, "secretKey");
+        validateBytes(message, "message");
+        return SecretKey.fromBytes(secretKey).sign(message).toBytes();
+    }
+    /**
+     * Compines all given signature into one.
+     * @param signatures
+     */
+    function aggregateSignatures(signatures) {
+        const agg = Signature.aggregate(signatures.map((p) => Signature.fromBytes(p)));
+        return agg.toBytes();
+    }
+    /**
+     * Combines all given public keys into single one
+     * @param publicKeys
+     */
+    function aggregatePublicKeys(publicKeys) {
+        const agg = PublicKey.aggregate(publicKeys.map((p) => PublicKey.fromBytes(p)));
+        return agg.toBytes();
+    }
+    /**
+     * Verifies if signature is message signed with given public key.
+     * @param publicKey
+     * @param message
+     * @param signature
+     */
+    function verify(publicKey, message, signature) {
+        validateBytes(publicKey, "publicKey");
+        validateBytes(message, "message");
+        validateBytes(signature, "signature");
+        try {
+            return Signature.fromBytes(signature).verify(PublicKey.fromBytes(publicKey), message);
+        }
+        catch (e) {
+            if (e instanceof NotInitializedError)
+                throw e;
+            return false;
+        }
+    }
+    /**
+     * Verifies if aggregated signature is same message signed with given public keys.
+     * @param publicKeys
+     * @param message
+     * @param signature
+     */
+    function verifyAggregate(publicKeys, message, signature) {
+        validateBytes(publicKeys, "publicKey");
+        validateBytes(message, "message");
+        validateBytes(signature, "signature");
+        try {
+            return Signature.fromBytes(signature).verifyAggregate(publicKeys.map((publicKey) => PublicKey.fromBytes(publicKey)), message);
+        }
+        catch (e) {
+            if (e instanceof NotInitializedError)
+                throw e;
+            return false;
+        }
+    }
+    /**
+     * Verifies if signature is list of message signed with corresponding public key.
+     * @param publicKeys
+     * @param messages
+     * @param signature
+     * @param fast Check if all messages are different
+     */
+    function verifyMultiple(publicKeys, messages, signature) {
+        validateBytes(publicKeys, "publicKey");
+        validateBytes(messages, "message");
+        validateBytes(signature, "signature");
+        if (publicKeys.length === 0 || publicKeys.length != messages.length) {
+            return false;
+        }
+        try {
+            return Signature.fromBytes(signature).verifyMultiple(publicKeys.map((publicKey) => PublicKey.fromBytes(publicKey)), messages.map((msg) => msg));
+        }
+        catch (e) {
+            if (e instanceof NotInitializedError)
+                throw e;
+            return false;
+        }
+    }
+    /**
+     * Verifies multiple signatures at once returning true if all valid or false
+     * if at least one is not. Optimization useful when knowing which signature is
+     * wrong is not relevant, i.e. verifying an entire Eth2.0 block.
+     *
+     * This method provides a safe way to do so by multiplying each signature by
+     * a random number so an attacker cannot craft a malicious signature that won't
+     * verify on its own but will if it's added to a specific predictable signature
+     * https://ethresear.ch/t/fast-verification-of-multiple-bls-signatures/5407
+     */
+    function verifyMultipleSignatures(sets) {
+        if (!sets)
+            throw Error("sets is null or undefined");
+        try {
+            return Signature.verifyMultipleSignatures(sets.map((s) => ({
+                publicKey: PublicKey.fromBytes(s.publicKey),
+                message: s.message,
+                signature: Signature.fromBytes(s.signature),
+            })));
+        }
+        catch (e) {
+            if (e instanceof NotInitializedError)
+                throw e;
+            return false;
+        }
+    }
+    /**
+     * Computes a public key from a secret key
+     */
+    function secretKeyToPublicKey(secretKey) {
+        validateBytes(secretKey, "secretKey");
+        return SecretKey.fromBytes(secretKey).toPublicKey().toBytes();
+    }
+    return {
+        sign,
+        aggregateSignatures,
+        aggregatePublicKeys,
+        verify,
+        verifyAggregate,
+        verifyMultiple,
+        verifyMultipleSignatures,
+        secretKeyToPublicKey,
+    };
+}

lib/getImplementation.d.ts

@@ -0,0 +1,2 @@
+import type { IBls, Implementation } from "./types.js";
+export declare function getImplementation(impl?: Implementation): Promise<IBls>;

lib/getImplementation.js

@@ -0,0 +1,17 @@
+// Thanks https://github.com/iliakan/detect-node/blob/master/index.esm.js
+const isNode = Object.prototype.toString.call(typeof process !== "undefined" ? process : 0) === "[object process]";
+export async function getImplementation(impl = "herumi") {
+    switch (impl) {
+        case "herumi": {
+            return await (await import("./herumi/index.js")).bls();
+        }
+        case "blst-native":
+            // Lazy import native bindings to prevent automatically importing binding.node files
+            if (!isNode) {
+                throw Error("blst-native is only supported in NodeJS");
+            }
+            return (await import("./blst-native/index.js")).bls;
+        default:
+            throw new Error(`Unsupported implementation - ${impl}`);
+    }
+}

lib/helpers/hex.d.ts

@@ -0,0 +1,10 @@
+/**
+ * Browser compatible fromHex method
+ * From https://github.com/herumi/bls-eth-wasm/blob/04eedb77aa96e66b4f65a0ab477228adf8090c36/src/bls.js#L62
+ */
+export declare function hexToBytes(hex: string): Uint8Array;
+/**
+ * Browser compatible toHex method
+ * From https://github.com/herumi/bls-eth-wasm/blob/04eedb77aa96e66b4f65a0ab477228adf8090c36/src/bls.js#L50
+ */
+export declare function bytesToHex(bytes: Uint8Array): string;

lib/helpers/hex.js

@@ -0,0 +1,30 @@
+/**
+ * Browser compatible fromHex method
+ * From https://github.com/herumi/bls-eth-wasm/blob/04eedb77aa96e66b4f65a0ab477228adf8090c36/src/bls.js#L62
+ */
+export function hexToBytes(hex) {
+    if (hex.startsWith("0x")) {
+        hex = hex.slice(2);
+    }
+    if (hex.length & 1) {
+        throw Error("hexToBytes:length must be even " + hex.length);
+    }
+    const n = hex.length / 2;
+    const a = new Uint8Array(n);
+    for (let i = 0; i < n; i++) {
+        a[i] = parseInt(hex.slice(i * 2, i * 2 + 2), 16);
+    }
+    return a;
+}
+/**
+ * Browser compatible toHex method
+ * From https://github.com/herumi/bls-eth-wasm/blob/04eedb77aa96e66b4f65a0ab477228adf8090c36/src/bls.js#L50
+ */
+export function bytesToHex(bytes) {
+    let s = "";
+    const n = bytes.length;
+    for (let i = 0; i < n; i++) {
+        s += ("0" + bytes[i].toString(16)).slice(-2);
+    }
+    return "0x" + s;
+}

lib/helpers/index.d.ts

@@ -0,0 +1,2 @@
+export * from "./hex.js";
+export * from "./utils.js";

lib/helpers/index.js

@@ -0,0 +1,2 @@
+export * from "./hex.js";
+export * from "./utils.js";

lib/helpers/utils.d.ts

@@ -0,0 +1,8 @@
+import randomBytes from "randombytes";
+export { randomBytes };
+/**
+ * Validate bytes to prevent confusing WASM errors downstream if bytes is null
+ */
+export declare function validateBytes(bytes: Uint8Array | Uint8Array[] | null, argName?: string): asserts bytes is NonNullable<typeof bytes>;
+export declare function isZeroUint8Array(bytes: Uint8Array): boolean;
+export declare function concatUint8Arrays(bytesArr: Uint8Array[]): Uint8Array;

lib/helpers/utils.js

@@ -0,0 +1,26 @@
+import randomBytes from "randombytes";
+// Single import to ease changing this lib if necessary
+export { randomBytes };
+/**
+ * Validate bytes to prevent confusing WASM errors downstream if bytes is null
+ */
+export function validateBytes(bytes, argName) {
+    for (const item of Array.isArray(bytes) ? bytes : [bytes]) {
+        if (item == null) {
+            throw Error(`${argName || "bytes"} is null or undefined`);
+        }
+    }
+}
+export function isZeroUint8Array(bytes) {
+    return bytes.every((byte) => byte === 0);
+}
+export function concatUint8Arrays(bytesArr) {
+    const totalLen = bytesArr.reduce((total, bytes) => total + bytes.length, 0);
+    const merged = new Uint8Array(totalLen);
+    let mergedLen = 0;
+    for (const bytes of bytesArr) {
+        merged.set(bytes, mergedLen);
+        mergedLen += bytes.length;
+    }
+    return merged;
+}

lib/herumi/context.d.ts

@@ -0,0 +1,12 @@
+import bls from "bls-eth-wasm";
+declare type Bls = typeof bls;
+declare global {
+    interface Window {
+        msCrypto: typeof window["crypto"];
+    }
+}
+export declare function setupBls(): Promise<void>;
+export declare function init(): Promise<void>;
+export declare function destroy(): void;
+export declare function getContext(): Bls;
+export {};

lib/herumi/context.js

@@ -0,0 +1,35 @@
+/* eslint-disable require-atomic-updates */
+import bls from "bls-eth-wasm";
+import { NotInitializedError } from "../errors.js";
+let blsGlobal = null;
+let blsGlobalPromise = null;
+export async function setupBls() {
+    if (!blsGlobal) {
+        await bls.init(bls.BLS12_381);
+        // Patch to fix multiVerify() calls on a browser with polyfilled NodeJS crypto
+        if (typeof window === "object") {
+            const crypto = window.crypto || window.msCrypto;
+            // getRandomValues is not typed in `bls-eth-wasm` because it's not meant to be exposed
+            // @ts-ignore
+            bls.getRandomValues = (x) => crypto.getRandomValues(x);
+        }
+        blsGlobal = bls;
+    }
+}
+// Cache a promise for Bls instead of Bls to make sure it is initialized only once
+export async function init() {
+    if (!blsGlobalPromise) {
+        blsGlobalPromise = setupBls();
+    }
+    return blsGlobalPromise;
+}
+export function destroy() {
+    blsGlobal = null;
+    blsGlobalPromise = null;
+}
+export function getContext() {
+    if (!blsGlobal) {
+        throw new NotInitializedError("herumi");
+    }
+    return blsGlobal;
+}

lib/herumi/index.d.ts

@@ -0,0 +1,9 @@
+import { SecretKey } from "./secretKey.js";
+import { PublicKey } from "./publicKey.js";
+import { Signature } from "./signature.js";
+import { init, destroy } from "./context.js";
+import { IBls } from "../types.js";
+export * from "../constants.js";
+export { SecretKey, PublicKey, Signature, init, destroy };
+export declare const bls: () => Promise<IBls>;
+export default bls;

lib/herumi/index.js

@@ -0,0 +1,18 @@
+import { SecretKey } from "./secretKey.js";
+import { PublicKey } from "./publicKey.js";
+import { Signature } from "./signature.js";
+import { init, destroy } from "./context.js";
+import { functionalInterfaceFactory } from "../functional.js";
+export * from "../constants.js";
+export { SecretKey, PublicKey, Signature, init, destroy };
+export const bls = async () => {
+    await init();
+    return {
+        implementation: "herumi",
+        SecretKey,
+        PublicKey,
+        Signature,
+        ...functionalInterfaceFactory({ SecretKey, PublicKey, Signature }),
+    };
+};
+export default bls;

lib/herumi/publicKey.d.ts

@@ -0,0 +1,11 @@
+import type { PublicKeyType } from "bls-eth-wasm";
+import { PointFormat, PublicKey as IPublicKey } from "../types.js";
+export declare class PublicKey implements IPublicKey {
+    readonly value: PublicKeyType;
+    constructor(value: PublicKeyType);
+    static fromBytes(bytes: Uint8Array): PublicKey;
+    static fromHex(hex: string): PublicKey;
+    static aggregate(publicKeys: PublicKey[]): PublicKey;
+    toBytes(format?: PointFormat): Uint8Array;
+    toHex(format?: PointFormat): string;
+}

lib/herumi/publicKey.js

@@ -0,0 +1,53 @@
+import { getContext } from "./context.js";
+import { bytesToHex, hexToBytes, isZeroUint8Array } from "../helpers/index.js";
+import { PointFormat } from "../types.js";
+import { EmptyAggregateError, InvalidLengthError, ZeroPublicKeyError } from "../errors.js";
+import { PUBLIC_KEY_LENGTH_COMPRESSED, PUBLIC_KEY_LENGTH_UNCOMPRESSED } from "../constants.js";
+export class PublicKey {
+    constructor(value) {
+        if (value.isZero()) {
+            throw new ZeroPublicKeyError();
+        }
+        this.value = value;
+    }
+    static fromBytes(bytes) {
+        const context = getContext();
+        const publicKey = new context.PublicKey();
+        if (!isZeroUint8Array(bytes)) {
+            if (bytes.length === PUBLIC_KEY_LENGTH_COMPRESSED) {
+                publicKey.deserialize(bytes);
+            }
+            else if (bytes.length === PUBLIC_KEY_LENGTH_UNCOMPRESSED) {
+                publicKey.deserializeUncompressed(bytes);
+            }
+            else {
+                throw new InvalidLengthError("PublicKey", bytes.length);
+            }
+        }
+        return new PublicKey(publicKey);
+    }
+    static fromHex(hex) {
+        return this.fromBytes(hexToBytes(hex));
+    }
+    static aggregate(publicKeys) {
+        if (publicKeys.length === 0) {
+            throw new EmptyAggregateError();
+        }
+        const agg = new PublicKey(publicKeys[0].value.clone());
+        for (const pk of publicKeys.slice(1)) {
+            agg.value.add(pk.value);
+        }
+        return agg;
+    }
+    toBytes(format) {
+        if (format === PointFormat.uncompressed) {
+            return this.value.serializeUncompressed();
+        }
+        else {
+            return this.value.serialize();
+        }
+    }
+    toHex(format) {
+        return bytesToHex(this.toBytes(format));
+    }
+}

lib/herumi/secretKey.d.ts

@@ -0,0 +1,15 @@
+import type { SecretKeyType } from "bls-eth-wasm";
+import { PublicKey } from "./publicKey.js";
+import { Signature } from "./signature.js";
+import { SecretKey as ISecretKey } from "../types.js";
+export declare class SecretKey implements ISecretKey {
+    readonly value: SecretKeyType;
+    constructor(value: SecretKeyType);
+    static fromBytes(bytes: Uint8Array): SecretKey;
+    static fromHex(hex: string): SecretKey;
+    static fromKeygen(entropy?: Uint8Array): SecretKey;
+    sign(message: Uint8Array): Signature;
+    toPublicKey(): PublicKey;
+    toBytes(): Uint8Array;
+    toHex(): string;
+}

lib/herumi/secretKey.js

@@ -0,0 +1,43 @@
+import { generateRandomSecretKey } from "@chainsafe/bls-keygen";
+import { SECRET_KEY_LENGTH } from "../constants.js";
+import { getContext } from "./context.js";
+import { PublicKey } from "./publicKey.js";
+import { Signature } from "./signature.js";
+import { bytesToHex, hexToBytes } from "../helpers/index.js";
+import { InvalidLengthError, ZeroSecretKeyError } from "../errors.js";
+export class SecretKey {
+    constructor(value) {
+        if (value.isZero()) {
+            throw new ZeroSecretKeyError();
+        }
+        this.value = value;
+    }
+    static fromBytes(bytes) {
+        if (bytes.length !== SECRET_KEY_LENGTH) {
+            throw new InvalidLengthError("SecretKey", SECRET_KEY_LENGTH);
+        }
+        const context = getContext();
+        const secretKey = new context.SecretKey();
+        secretKey.deserialize(bytes);
+        return new SecretKey(secretKey);
+    }
+    static fromHex(hex) {
+        return this.fromBytes(hexToBytes(hex));
+    }
+    static fromKeygen(entropy) {
+        const sk = generateRandomSecretKey(entropy);
+        return this.fromBytes(sk);
+    }
+    sign(message) {
+        return new Signature(this.value.sign(message));
+    }
+    toPublicKey() {
+        return new PublicKey(this.value.getPublicKey());
+    }
+    toBytes() {
+        return this.value.serialize();
+    }
+    toHex() {
+        return bytesToHex(this.toBytes());
+    }
+}

lib/herumi/signature.d.ts

@@ -0,0 +1,24 @@
+import type { SignatureType } from "bls-eth-wasm";
+import { PublicKey } from "./publicKey.js";
+import { PointFormat, Signature as ISignature, CoordType } from "../types.js";
+export declare class Signature implements ISignature {
+    readonly value: SignatureType;
+    constructor(value: SignatureType);
+    /**
+     * @param type Does not affect `herumi` implementation, always de-serializes to `jacobian`
+     * @param validate With `herumi` implementation signature validation is always on regardless of this flag.
+     */
+    static fromBytes(bytes: Uint8Array, _type?: CoordType, _validate?: boolean): Signature;
+    static fromHex(hex: string): Signature;
+    static aggregate(signatures: Signature[]): Signature;
+    static verifyMultipleSignatures(sets: {
+        publicKey: PublicKey;
+        message: Uint8Array;
+        signature: Signature;
+    }[]): boolean;
+    verify(publicKey: PublicKey, message: Uint8Array): boolean;
+    verifyAggregate(publicKeys: PublicKey[], message: Uint8Array): boolean;
+    verifyMultiple(publicKeys: PublicKey[], messages: Uint8Array[]): boolean;
+    toBytes(format?: PointFormat): Uint8Array;
+    toHex(format?: PointFormat): string;
+}

lib/herumi/signature.js

@@ -0,0 +1,70 @@
+import { getContext } from "./context.js";
+import { bytesToHex, concatUint8Arrays, hexToBytes, isZeroUint8Array } from "../helpers/index.js";
+import { PointFormat } from "../types.js";
+import { EmptyAggregateError, InvalidLengthError, InvalidOrderError } from "../errors.js";
+import { SIGNATURE_LENGTH_COMPRESSED, SIGNATURE_LENGTH_UNCOMPRESSED } from "../constants.js";
+export class Signature {
+    constructor(value) {
+        if (!value.isValidOrder()) {
+            throw new InvalidOrderError();
+        }
+        this.value = value;
+    }
+    /**
+     * @param type Does not affect `herumi` implementation, always de-serializes to `jacobian`
+     * @param validate With `herumi` implementation signature validation is always on regardless of this flag.
+     */
+    static fromBytes(bytes, _type, _validate = true) {
+        const context = getContext();
+        const signature = new context.Signature();
+        if (!isZeroUint8Array(bytes)) {
+            if (bytes.length === SIGNATURE_LENGTH_COMPRESSED) {
+                signature.deserialize(bytes);
+            }
+            else if (bytes.length === SIGNATURE_LENGTH_UNCOMPRESSED) {
+                signature.deserializeUncompressed(bytes);
+            }
+            else {
+                throw new InvalidLengthError("Signature", bytes.length);
+            }
+            signature.deserialize(bytes);
+        }
+        return new Signature(signature);
+    }
+    static fromHex(hex) {
+        return this.fromBytes(hexToBytes(hex));
+    }
+    static aggregate(signatures) {
+        if (signatures.length === 0) {
+            throw new EmptyAggregateError();
+        }
+        const context = getContext();
+        const signature = new context.Signature();
+        signature.aggregate(signatures.map((sig) => sig.value));
+        return new Signature(signature);
+    }
+    static verifyMultipleSignatures(sets) {
+        const context = getContext();
+        return context.multiVerify(sets.map((s) => s.publicKey.value), sets.map((s) => s.signature.value), sets.map((s) => s.message));
+    }
+    verify(publicKey, message) {
+        return publicKey.value.verify(this.value, message);
+    }
+    verifyAggregate(publicKeys, message) {
+        return this.value.fastAggregateVerify(publicKeys.map((key) => key.value), message);
+    }
+    verifyMultiple(publicKeys, messages) {
+        return this.value.aggregateVerifyNoCheck(publicKeys.map((key) => key.value), concatUint8Arrays(messages));
+    }
+    toBytes(format) {
+        if (format === PointFormat.uncompressed) {
+            return this.value.serializeUncompressed();
+        }
+        else {
+            return this.value.serialize();
+        }
+    }
+    toHex(format) {
+        return bytesToHex(this.toBytes(format));
+    }
+}

lib/herumi/web.d.ts

@@ -0,0 +1 @@
+export {};

lib/herumi/web.js

@@ -0,0 +1,6 @@
+import { bls } from "./index.js";
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+(function (window) {
+    window.bls = bls;
+    // @ts-ignore
+})(window);

lib/index.d.ts

@@ -0,0 +1,3 @@
+import type { IBls } from "./types.js";
+export declare const bls: () => Promise<IBls>;
+export default bls;

lib/index.js

@@ -0,0 +1,14 @@
+import { getImplementation } from "./getImplementation.js";
+// Thanks https://github.com/iliakan/detect-node/blob/master/index.esm.js
+const isNode = Object.prototype.toString.call(typeof process !== "undefined" ? process : 0) === "[object process]";
+export const bls = async () => {
+    let bls;
+    try {
+        bls = await getImplementation(isNode ? "blst-native" : "herumi");
+    }
+    catch (e) {
+        bls = await getImplementation("herumi");
+    }
+    return bls;
+};
+export default bls;

lib/switchable.d.ts

@@ -0,0 +1,4 @@
+import type { IBls, Implementation } from "./types.js";
+declare const bls: IBls;
+export default bls;
+export declare function init(impl: Implementation): Promise<void>;

lib/switchable.js

@@ -0,0 +1,11 @@
+import { getImplementation } from "./getImplementation.js";
+// TODO: Use a Proxy for example to throw an error if it's not initialized yet
+const bls = {};
+export default bls;
+export async function init(impl) {
+    // Using Object.assign instead of just bls = getImplementation()
+    // because otherwise the default import breaks. The reference is lost
+    // and the imported object is still undefined after calling init()
+    const blsImpl = await getImplementation(impl);
+    Object.assign(bls, blsImpl);
+}

lib/types.d.ts

@@ -0,0 +1,66 @@
+export interface IBls {
+    implementation: Implementation;
+    SecretKey: typeof SecretKey;
+    PublicKey: typeof PublicKey;
+    Signature: typeof Signature;
+    sign(secretKey: Uint8Array, message: Uint8Array): Uint8Array;
+    aggregatePublicKeys(publicKeys: Uint8Array[]): Uint8Array;
+    aggregateSignatures(signatures: Uint8Array[]): Uint8Array;
+    verify(publicKey: Uint8Array, message: Uint8Array, signature: Uint8Array): boolean;
+    verifyAggregate(publicKeys: Uint8Array[], message: Uint8Array, signature: Uint8Array): boolean;
+    verifyMultiple(publicKeys: Uint8Array[], messages: Uint8Array[], signature: Uint8Array): boolean;
+    verifyMultipleSignatures(sets: {
+        publicKey: Uint8Array;
+        message: Uint8Array;
+        signature: Uint8Array;
+    }[]): boolean;
+    secretKeyToPublicKey(secretKey: Uint8Array): Uint8Array;
+}
+export declare class SecretKey {
+    private constructor();
+    static fromBytes(bytes: Uint8Array): SecretKey;
+    static fromHex(hex: string): SecretKey;
+    static fromKeygen(entropy?: Uint8Array): SecretKey;
+    sign(message: Uint8Array): Signature;
+    toPublicKey(): PublicKey;
+    toBytes(): Uint8Array;
+    toHex(): string;
+}
+export declare class PublicKey {
+    private constructor();
+    /** @param type Only for impl `blst-native`. Defaults to `CoordType.jacobian` */
+    static fromBytes(bytes: Uint8Array, type?: CoordType, validate?: boolean): PublicKey;
+    static fromHex(hex: string): PublicKey;
+    static aggregate(publicKeys: PublicKey[]): PublicKey;
+    /** @param format Defaults to `PointFormat.compressed` */
+    toBytes(format?: PointFormat): Uint8Array;
+    toHex(format?: PointFormat): string;
+}
+export declare class Signature {
+    private constructor();
+    /** @param type Only for impl `blst-native`. Defaults to `CoordType.affine`
+     *  @param validate When using `herumi` implementation, signature validation is always on regardless of this flag. */
+    static fromBytes(bytes: Uint8Array, type?: CoordType, validate?: boolean): Signature;
+    static fromHex(hex: string): Signature;
+    static aggregate(signatures: Signature[]): Signature;
+    static verifyMultipleSignatures(sets: {
+        publicKey: PublicKey;
+        message: Uint8Array;
+        signature: Signature;
+    }[]): boolean;
+    verify(publicKey: PublicKey, message: Uint8Array): boolean;
+    verifyAggregate(publicKeys: PublicKey[], message: Uint8Array): boolean;
+    verifyMultiple(publicKeys: PublicKey[], messages: Uint8Array[]): boolean;
+    /** @param format Defaults to `PointFormat.compressed` */
+    toBytes(format?: PointFormat): Uint8Array;
+    toHex(format?: PointFormat): string;
+}
+export declare type Implementation = "herumi" | "blst-native";
+export declare enum PointFormat {
+    compressed = "compressed",
+    uncompressed = "uncompressed"
+}
+export declare enum CoordType {
+    affine = 0,
+    jacobian = 1
+}

lib/types.js

@@ -0,0 +1,10 @@
+export var PointFormat;
+(function (PointFormat) {
+    PointFormat["compressed"] = "compressed";
+    PointFormat["uncompressed"] = "uncompressed";
+})(PointFormat || (PointFormat = {}));
+export var CoordType;
+(function (CoordType) {
+    CoordType[CoordType["affine"] = 0] = "affine";
+    CoordType[CoordType["jacobian"] = 1] = "jacobian";
+})(CoordType || (CoordType = {}));

package.json

@@ -88,7 +88,7 @@
     "@chainsafe/lodestar-spec-test-util": "^0.18.0",
     "@chainsafe/threads": "^1.9.0",
     "@types/chai": "^4.2.9",
-    "@types/mocha": "^8.0.4",
+    "@types/mocha": "^10.0.0",
     "@types/randombytes": "^2.0.0",
     "@typescript-eslint/eslint-plugin": "^4.31.1",
     "@typescript-eslint/parser": "^4.31.1",
@@ -104,13 +104,13 @@
     "karma-mocha": "^2.0.1",
     "karma-spec-reporter": "^0.0.32",
     "karma-webpack": "^5.0.0",
-    "mocha": "^9.2.2",
+    "mocha": "^10.0.0",
     "nyc": "^15.0.0",
     "prettier": "^2.1.2",
     "resolve-typescript-plugin": "^1.2.0",
-    "ts-loader": "^9.2.8",
-    "ts-node": "^10.7.0",
-    "typescript": "^4.6.3",
+    "ts-loader": "^9.3.1",
+    "ts-node": "^10.9.1",
+    "typescript": "4.7.4",
     "webpack": "^5.72.0",
     "webpack-cli": "^4.9.2"
   },

src/getImplementation.ts

@@ -6,7 +6,7 @@ const isNode = Object.prototype.toString.call(typeof process !== "undefined" ? p
 export async function getImplementation(impl: Implementation = "herumi"): Promise<IBls> {
   switch (impl) {
     case "herumi": {
-      return (await import("./herumi/index.js")).bls;
+      return await (await import("./herumi/index.js")).bls();
     }
 
     case "blst-native":

src/herumi/index.ts

@@ -5,19 +5,19 @@ import {init, destroy} from "./context.js";
 import {IBls} from "../types.js";
 import {functionalInterfaceFactory} from "../functional.js";
 
-await init();
-
 export * from "../constants.js";
 
 export {SecretKey, PublicKey, Signature, init, destroy};
 
-export const bls: IBls = {
-  implementation: "herumi",
-  SecretKey,
-  PublicKey,
-  Signature,
+export const bls = async (): Promise<IBls> => {
+  await init();
+  return {
+    implementation: "herumi",
+    SecretKey,
+    PublicKey,
+    Signature,
 
-  ...functionalInterfaceFactory({SecretKey, PublicKey, Signature}),
+    ...functionalInterfaceFactory({SecretKey, PublicKey, Signature}),
+  };
 };
-
 export default bls;

src/index.ts

@@ -4,11 +4,16 @@ import {getImplementation} from "./getImplementation.js";
 // Thanks https://github.com/iliakan/detect-node/blob/master/index.esm.js
 const isNode = Object.prototype.toString.call(typeof process !== "undefined" ? process : 0) === "[object process]";
 
-let bls: IBls;
-try {
-  bls = await getImplementation(isNode ? "blst-native" : "herumi");
-} catch (e) {
-  bls = await getImplementation("herumi");
-}
+export const bls = async (): Promise<IBls> => {
+  let bls: IBls;
+
+  try {
+    bls = await getImplementation(isNode ? "blst-native" : "herumi");
+  } catch (e) {
+    bls = await getImplementation("herumi");
+  }
+
+  return bls;
+};
 
 export default bls;

test/unit/helpers/hex.test.ts

@@ -14,7 +14,7 @@ describe("helpers / hex", () => {
     it(`${id} hexToBytes`, () => {
       const expectedBytes = hexToBytesNode(hex);
       const bytes = hexToBytes(hex);
-      expect(expectedBytes.equals(bytes)).to.be.true;
+      expect(expectedBytes.equals(bytes)).equals(true);
     });
 
     it(`${id} bytesToHex`, () => {

test/unit/index-named-exports.test.ts

@@ -20,7 +20,7 @@ describe("types named exports", async () => {
     const msg = new Uint8Array(32);
     const sig = sk.sign(msg);
     const pk = sk.toPublicKey();
-    expect(verifyHelper(pk, sig, msg)).to.be.true;
+    expect(verifyHelper(pk, sig, msg)).equals(true);
   });
 
   it("Make sure exported classes are compatible with interface", () => {

test/unit/index.test.ts

@@ -28,7 +28,7 @@ export function runIndexTests(bls: IBls): void {
       } catch {
         /* eslint-disable no-empty */
       }
-      expect(sig === undefined).to.be.true;
+      expect(sig === undefined).equals(true);
     });
   });
 
@@ -37,31 +37,38 @@ export function runIndexTests(bls: IBls): void {
       const {pk, msg, sig} = getRandomData();
       const pkHex = pk.toHex();
       const isValid = bls.verify(pk.toBytes(), msg, sig.toBytes());
-      expect(isValid, "fail verify").to.be.true;
+      expect(isValid, "fail verify").equals(true);
 
       // Make sure to not modify original pubkey when verifying
-      expect(pk.toHex()).to.be.equal(pkHex, "pubkey modified when verifying");
+      expect(pk.toHex()).equals(pkHex, "pubkey modified when verifying");
     });
 
     it("should fail verify empty signature", () => {
       const {pk, msg} = getRandomData();
       const emptySig = Buffer.alloc(96);
       const isValid = bls.verify(pk.toBytes(), msg, emptySig);
-      expect(isValid).to.be.false;
+      expect(isValid).equals(false);
     });
 
     it("should fail verify signature of different message", () => {
       const {pk, sig} = getRandomData();
       const msg2 = randomMessage();
       const isValid = bls.verify(pk.toBytes(), msg2, sig.toBytes());
-      expect(isValid).to.be.false;
+      expect(isValid).equals(false);
     });
 
     it("should fail verify signature signed by different key", () => {
       const {msg, sig} = getRandomData();
       const {pk: pk2} = getRandomData();
       const isValid = bls.verify(pk2.toBytes(), msg, sig.toBytes());
-      expect(isValid).to.be.false;
+      expect(isValid).equals(false);
+    });
+
+    it("should fail verify empty message", () => {
+      const emptyMsg = new Uint8Array(0);
+      const {pk, sig} = getRandomData();
+      const isValid = sig.verify(pk, emptyMsg);
+      expect(isValid).equals(false);
     });
   });
 
@@ -80,8 +87,8 @@ export function runIndexTests(bls: IBls): void {
 
       const aggSig = bls.aggregateSignatures(sigs.map((sig) => sig.toBytes()));
 
-      expect(bls.verifyMultiple(aggPubkeys, msgs, aggSig), "should be valid").to.be.true;
-      expect(bls.verifyMultiple(aggPubkeys.reverse(), msgs, aggSig), "should fail - swaped pubkeys").to.be.false;
+      expect(bls.verifyMultiple(aggPubkeys, msgs, aggSig), "should be valid").equals(true);
+      expect(bls.verifyMultiple(aggPubkeys.reverse(), msgs, aggSig), "should fail - swaped pubkeys").equals(false);
     });
 
     it("should verify aggregated signatures - same message", () => {
@@ -98,7 +105,7 @@ export function runIndexTests(bls: IBls): void {
         getN(4, () => msg), // Same message n times
         aggregateSignature
       );
-      expect(isValid).to.be.true;
+      expect(isValid).equals(true);
     });
 
     it("should fail to verify aggregated signatures - no public keys", () => {
@@ -107,7 +114,19 @@ export function runIndexTests(bls: IBls): void {
       const msg2 = randomMessage();
 
       const isValid = bls.verifyMultiple([], [msg2, msg1], sig);
-      expect(isValid).to.be.false;
+      expect(isValid).equals(false);
+    });
+
+    it("should fail verify empty message", () => {
+      const sks = getN(2, () => bls.SecretKey.fromKeygen());
+      const msgs = getN(2, () => randomMessage());
+      const pks = sks.map((sk) => sk.toPublicKey());
+      const sigs = [sks[0].sign(msgs[0]), sks[1].sign(msgs[1])];
+      const aggSig = bls.Signature.aggregate(sigs);
+
+      const emptyMsgs = msgs.map(() => new Uint8Array(0));
+      const isValid = aggSig.verifyMultiple(pks, emptyMsgs);
+      expect(isValid).equals(false);
     });
   });
 
@@ -167,6 +186,22 @@ export function runIndexTests(bls: IBls): void {
         "Malicous signature should not validate with bls.verifyMultipleSignatures"
       );
     });
+
+    it("should fail verify empty message", () => {
+      const n = 4;
+      const sets = getN(n, () => {
+        const sk = bls.SecretKey.fromKeygen();
+        const publicKey = sk.toPublicKey();
+        const message = randomMessage();
+        const signature = sk.sign(message);
+        return {publicKey, message, signature};
+      });
+
+      const setsWithEmptyMsgs = sets.map((set) => ({...set, message: new Uint8Array(0)}));
+
+      const isValid = bls.Signature.verifyMultipleSignatures(setsWithEmptyMsgs);
+      expect(isValid).equals(false);
+    });
   });
 
   describe("serialize deserialize", () => {

test/unit/publicKey.test.ts

@@ -7,11 +7,11 @@ export function runPublicKeyTests(bls: IBls): void {
       "0xb6f21199594b56d77670564bf422cb331d5281ca2c1f9a45588a56881d8287ef8619efa6456d6cd2ef61306aa5b21311";
 
     it("should export public key to hex string", () => {
-      expect(bls.PublicKey.fromHex(publicKey).toHex()).to.be.equal(publicKey);
+      expect(bls.PublicKey.fromHex(publicKey).toHex()).equals(publicKey);
     });
 
     it("should export public key to hex string from non-prefixed hex", () => {
-      expect(bls.PublicKey.fromHex(publicKey).toHex()).to.be.equal(publicKey);
+      expect(bls.PublicKey.fromHex(publicKey).toHex()).equals(publicKey);
     });
 
     it("from secret key", () => {

test/unit/secretKey.test.ts

@@ -12,11 +12,11 @@ export function runSecretKeyTests(bls: IBls): void {
     const secretKey = "0x07656fd676da43883d163f49566c72b9cbf0a5a294f26808c807700732456da7";
 
     it("should export secret key to hex string", () => {
-      expect(bls.SecretKey.fromHex(secretKey).toHex()).to.be.equal(secretKey);
+      expect(bls.SecretKey.fromHex(secretKey).toHex()).equals(secretKey);
     });
 
     it("should export secret key to hex string from non-prefixed hex", () => {
-      expect(bls.SecretKey.fromHex(secretKey).toHex()).to.be.equal(secretKey);
+      expect(bls.SecretKey.fromHex(secretKey).toHex()).equals(secretKey);
     });
 
     it("should not accept too short secret key", () => {

yarn.lock

@@ -283,17 +283,12 @@
   resolved "https://registry.yarnpkg.com/@colors/colors/-/colors-1.5.0.tgz#bb504579c1cae923e6576a4f5da43d25f97bdbd9"
   integrity sha512-ooWCrlZP11i8GImSjTHYHLkvFDP48nS4+204nGb1RiX/WXYHmJA2III9/e2DWVabCESdW7hBAEzHRqUn9OUVvQ==
 
-"@cspotcode/source-map-consumer@0.8.0":
-  version "0.8.0"
-  resolved "https://registry.yarnpkg.com/@cspotcode/source-map-consumer/-/source-map-consumer-0.8.0.tgz#33bf4b7b39c178821606f669bbc447a6a629786b"
-  integrity sha512-41qniHzTU8yAGbCp04ohlmSrZf8bkf/iJsl3V0dRGsQN/5GFfx+LbCSsCpp2gqrqjTVg/K6O8ycoV35JIwAzAg==
-
-"@cspotcode/source-map-support@0.7.0":
-  version "0.7.0"
-  resolved "https://registry.yarnpkg.com/@cspotcode/source-map-support/-/source-map-support-0.7.0.tgz#4789840aa859e46d2f3173727ab707c66bf344f5"
-  integrity sha512-X4xqRHqN8ACt2aHVe51OxeA2HjbcL4MqFqXkrmQszJ1NOUuUu5u6Vqx/0lZSVNku7velL5FC/s5uEAj1lsBMhA==
+"@cspotcode/source-map-support@^0.8.0":
+  version "0.8.1"
+  resolved "https://registry.yarnpkg.com/@cspotcode/source-map-support/-/source-map-support-0.8.1.tgz#00629c35a688e05a88b1cda684fb9d5e73f000a1"
+  integrity sha512-IchNf6dN4tHoMFIn/7OE8LWZ19Y6q/67Bmf6vnGREv8RSbBVb9LPJxEcnwrcwX6ixSvaiGoomAUvu4YSxXrVgw==
   dependencies:
-    "@cspotcode/source-map-consumer" "0.8.0"
+    "@jridgewell/trace-mapping" "0.3.9"
 
 "@dabh/diagnostics@^2.0.2":
   version "2.0.2"
@@ -358,6 +353,24 @@
   resolved "https://registry.yarnpkg.com/@istanbuljs/schema/-/schema-0.1.2.tgz#26520bf09abe4a5644cd5414e37125a8954241dd"
   integrity sha512-tsAQNx32a8CoFhjhijUIhI4kccIAgmGhy8LZMZgGfmXcpMbPRUqn5LWmgRttILi6yeGmBJd2xsPkFMs0PzgPCw==
 
+"@jridgewell/resolve-uri@^3.0.3":
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/@jridgewell/resolve-uri/-/resolve-uri-3.1.0.tgz#2203b118c157721addfe69d47b70465463066d78"
+  integrity sha512-F2msla3tad+Mfht5cJq7LSXcdudKTWCVYUgw6pLFOOHSTtZlj6SWNYAp+AhuqLmWdBO2X5hPrLcu8cVP8fy28w==
+
+"@jridgewell/sourcemap-codec@^1.4.10":
+  version "1.4.14"
+  resolved "https://registry.yarnpkg.com/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.4.14.tgz#add4c98d341472a289190b424efbdb096991bb24"
+  integrity sha512-XPSJHWmi394fuUuzDnGz1wiKqWfo1yXecHQMRf2l6hztTO+nPru658AyDngaBe7isIxEkRsPR3FZh+s7iVa4Uw==
+
+"@jridgewell/trace-mapping@0.3.9":
+  version "0.3.9"
+  resolved "https://registry.yarnpkg.com/@jridgewell/trace-mapping/-/trace-mapping-0.3.9.tgz#6534fd5933a53ba7cbf3a17615e273a0d1273ff9"
+  integrity sha512-3Belt6tdc8bPgAtbcmdtNJlirVoTmEb5e2gC94PnkwEW9jI6CAHUeoG85tjWP5WquqfavoMtMwiG4P926ZKKuQ==
+  dependencies:
+    "@jridgewell/resolve-uri" "^3.0.3"
+    "@jridgewell/sourcemap-codec" "^1.4.10"
+
 "@noble/hashes@^1.0.0", "@noble/hashes@~1.0.0":
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/@noble/hashes/-/hashes-1.0.0.tgz#d5e38bfbdaba174805a4e649f13be9a9ed3351ae"
@@ -489,10 +502,10 @@
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.11.tgz#d421b6c527a3037f7c84433fd2c4229e016863d3"
   integrity sha512-wOuvG1SN4Us4rez+tylwwwCV1psiNVOkJeM3AUWUNWg/jDQY2+HE/444y5gc+jBmRqASOm2Oeh5c1axHobwRKQ==
 
-"@types/mocha@^8.0.4":
-  version "8.0.4"
-  resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-8.0.4.tgz#b840c2dce46bacf286e237bfb59a29e843399148"
-  integrity sha512-M4BwiTJjHmLq6kjON7ZoI2JMlBvpY3BYSdiP6s/qCT3jb1s9/DeJF0JELpAxiVSIxXDzfNKe+r7yedMIoLbknQ==
+"@types/mocha@^10.0.0":
+  version "10.0.0"
+  resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-10.0.0.tgz#3d9018c575f0e3f7386c1de80ee66cc21fbb7a52"
+  integrity sha512-rADY+HtTOA52l9VZWtgQfn4p+UDVM2eDVkMZT1I6syp0YKxW2F9v+0pbRZLsvskhQv/vMb6ZfCay81GHbz5SHg==
 
 "@types/node@*":
   version "14.14.10"
@@ -1075,6 +1088,13 @@ brace-expansion@^1.1.7:
     balanced-match "^1.0.0"
     concat-map "0.0.1"
 
+brace-expansion@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-2.0.1.tgz#1edc459e0f0c548486ecf9fc99f2221364b9a0ae"
+  integrity sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA==
+  dependencies:
+    balanced-match "^1.0.0"
+
 braces@^3.0.1, braces@^3.0.2, braces@~3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/braces/-/braces-3.0.2.tgz#3454e1a462ee8d599e236df336cd9ea4f8afe107"
@@ -1519,7 +1539,7 @@ debug@2.6.9, debug@^2.6.9:
   dependencies:
     ms "2.0.0"
 
-debug@4, debug@^4.2.0, debug@^4.3.1, debug@^4.3.3, debug@^4.3.4, debug@~4.3.1, debug@~4.3.2:
+debug@4, debug@4.3.4, debug@^4.2.0, debug@^4.3.1, debug@^4.3.3, debug@^4.3.4, debug@~4.3.1, debug@~4.3.2:
   version "4.3.4"
   resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.4.tgz#1319f6579357f2338d3337d2cdd4914bb5dcc865"
   integrity sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==
@@ -3140,6 +3160,13 @@ minimatch@4.2.1:
   dependencies:
     brace-expansion "^1.1.7"
 
+minimatch@5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-5.0.1.tgz#fb9022f7528125187c92bd9e9b6366be1cf3415b"
+  integrity sha512-nLDxIFRyhDblz3qMuq+SoRZED4+miJ/G+tdDrjkkkRnjAsBexeGpgjLEQ0blJy7rHhR2b93rhQY4SvyWu9v03g==
+  dependencies:
+    brace-expansion "^2.0.1"
+
 minimatch@^3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
@@ -3147,12 +3174,7 @@ minimatch@^3.0.4:
   dependencies:
     brace-expansion "^1.1.7"
 
-minimist@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
-  integrity sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=
-
-minimist@^1.2.3, minimist@^1.2.6:
+minimist@^1.2.0, minimist@^1.2.3, minimist@^1.2.6:
   version "1.2.6"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.6.tgz#8637a5b759ea0d6e98702cfb3a9283323c93af44"
   integrity sha512-Jsjnk4bw3YJqYzbdyBiNsPWHPfO++UGG749Cxs6peCu5Xg4nrena6OVxOYxrQTqww0Jmwt+Ref8rggumkTLz9Q==
@@ -3223,6 +3245,34 @@ mkdirp@^1.0.3, mkdirp@^1.0.4:
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
   integrity sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==
 
+mocha@^10.0.0:
+  version "10.0.0"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-10.0.0.tgz#205447d8993ec755335c4b13deba3d3a13c4def9"
+  integrity sha512-0Wl+elVUD43Y0BqPZBzZt8Tnkw9CMUdNYnUsTfOM1vuhJVZL+kiesFYsqwBkEEuEixaiPe5ZQdqDgX2jddhmoA==
+  dependencies:
+    "@ungap/promise-all-settled" "1.1.2"
+    ansi-colors "4.1.1"
+    browser-stdout "1.3.1"
+    chokidar "3.5.3"
+    debug "4.3.4"
+    diff "5.0.0"
+    escape-string-regexp "4.0.0"
+    find-up "5.0.0"
+    glob "7.2.0"
+    he "1.2.0"
+    js-yaml "4.1.0"
+    log-symbols "4.1.0"
+    minimatch "5.0.1"
+    ms "2.1.3"
+    nanoid "3.3.3"
+    serialize-javascript "6.0.0"
+    strip-json-comments "3.1.1"
+    supports-color "8.1.1"
+    workerpool "6.2.1"
+    yargs "16.2.0"
+    yargs-parser "20.2.4"
+    yargs-unparser "2.0.0"
+
 mocha@^8.1.1, mocha@^9.2.2:
   version "9.2.2"
   resolved "https://registry.yarnpkg.com/mocha/-/mocha-9.2.2.tgz#d70db46bdb93ca57402c809333e5a84977a88fb9"
@@ -3278,6 +3328,11 @@ nanoid@3.3.1:
   resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.1.tgz#6347a18cac88af88f58af0b3594b723d5e99bb35"
   integrity sha512-n6Vs/3KGyxPQd6uO0eH4Bv0ojGSUvuLlIHtC3Y0kEO23YRge8H9x1GCzLn28YX0H66pMkxuaeESFq4tKISKwdw==
 
+nanoid@3.3.3:
+  version "3.3.3"
+  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.3.tgz#fd8e8b7aa761fe807dba2d1b98fb7241bb724a25"
+  integrity sha512-p1sjXuopFs0xg+fPASzQ28agW1oHD7xDsd9Xkf3T15H3c/cifrFHVwrh74PdoklAPi+i7MdRsE47vm2r6JoB+w==
+
 native-abort-controller@0.0.3:
   version "0.0.3"
   resolved "https://registry.yarnpkg.com/native-abort-controller/-/native-abort-controller-0.0.3.tgz#4c528a6c9c7d3eafefdc2c196ac9deb1a5edf2f8"
@@ -3635,12 +3690,7 @@ path-key@^3.0.0, path-key@^3.1.0:
   resolved "https://registry.yarnpkg.com/path-key/-/path-key-3.1.1.tgz#581f6ade658cbba65a0d3380de7753295054f375"
   integrity sha512-ojmeN0qd+y0jszEtoY48r0Peq5dwMEkIlCOu6Q5f41lfkswXuKtYrhgoTpLnyIcHm24Uhqx+5Tqm2InSwLhE6Q==
 
-path-parse@^1.0.6:
-  version "1.0.6"
-  resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
-  integrity sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==
-
-path-parse@^1.0.7:
+path-parse@^1.0.6, path-parse@^1.0.7:
   version "1.0.7"
   resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.7.tgz#fbc114b60ca42b30d9daf5858e4bd68bbedb6735"
   integrity sha512-LDJzPVEEEPR+y48z93A0Ed0yXb8pAByGWo/k5YYdYgpY2/2EsOsksJrq7lOHxryrVOn1ejG6oAp8ahvOIQD8sw==
@@ -3657,12 +3707,7 @@ path-type@^4.0.0:
   resolved "https://registry.yarnpkg.com/path-type/-/path-type-4.0.0.tgz#84ed01c0a7ba380afe09d90a8c180dcd9d03043b"
   integrity sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw==
 
-pathval@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/pathval/-/pathval-1.1.0.tgz#b942e6d4bde653005ef6b71361def8727d0645e0"
-  integrity sha1-uULm1L3mUwBe9rcTYd74cn0GReA=
-
-pathval@^1.1.1:
+pathval@^1.1.0, pathval@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/pathval/-/pathval-1.1.1.tgz#8534e77a77ce7ac5a2512ea21e0fdb8fcf6c3d8d"
   integrity sha512-Dp6zGqpTdETdR63lehJYPeIOqpiNBNtc7BpWSLrOje7UaIsE5aY92r/AunQA7rsXvet3lrJ3JnZX29UPTKXyKQ==
@@ -4462,22 +4507,22 @@ triple-beam@^1.2.0, triple-beam@^1.3.0:
   resolved "https://registry.yarnpkg.com/triple-beam/-/triple-beam-1.3.0.tgz#a595214c7298db8339eeeee083e4d10bd8cb8dd9"
   integrity sha512-XrHUvV5HpdLmIj4uVMxHggLbFSZYIn7HEWsqePZcI50pco+MPqJ50wMGY794X7AOOhxOBAjbkqfAbEe/QMp2Lw==
 
-ts-loader@^9.2.8:
-  version "9.2.8"
-  resolved "https://registry.yarnpkg.com/ts-loader/-/ts-loader-9.2.8.tgz#e89aa32fa829c5cad0a1d023d6b3adecd51d5a48"
-  integrity sha512-gxSak7IHUuRtwKf3FIPSW1VpZcqF9+MBrHOvBp9cjHh+525SjtCIJKVGjRKIAfxBwDGDGCFF00rTfzB1quxdSw==
+ts-loader@^9.3.1:
+  version "9.4.1"
+  resolved "https://registry.yarnpkg.com/ts-loader/-/ts-loader-9.4.1.tgz#b6f3d82db0eac5a8295994f8cb5e4940ff6b1060"
+  integrity sha512-384TYAqGs70rn9F0VBnh6BPTfhga7yFNdC5gXbQpDrBj9/KsT4iRkGqKXhziofHOlE2j6YEaiTYVGKKvPhGWvw==
   dependencies:
     chalk "^4.1.0"
     enhanced-resolve "^5.0.0"
     micromatch "^4.0.0"
     semver "^7.3.4"
 
-ts-node@^10.7.0:
-  version "10.7.0"
-  resolved "https://registry.yarnpkg.com/ts-node/-/ts-node-10.7.0.tgz#35d503d0fab3e2baa672a0e94f4b40653c2463f5"
-  integrity sha512-TbIGS4xgJoX2i3do417KSaep1uRAW/Lu+WAL2doDHC0D6ummjirVOXU5/7aiZotbQ5p1Zp9tP7U6cYhA0O7M8A==
+ts-node@^10.9.1:
+  version "10.9.1"
+  resolved "https://registry.yarnpkg.com/ts-node/-/ts-node-10.9.1.tgz#e73de9102958af9e1f0b168a6ff320e25adcff4b"
+  integrity sha512-NtVysVPkxxrwFGUUxGYhfux8k78pQB3JqYBXlLRZgdGUqTO5wU/UyHop5p70iEbGhB7q5KmiZiU0Y3KlJrScEw==
   dependencies:
-    "@cspotcode/source-map-support" "0.7.0"
+    "@cspotcode/source-map-support" "^0.8.0"
     "@tsconfig/node10" "^1.0.7"
     "@tsconfig/node12" "^1.0.7"
     "@tsconfig/node14" "^1.0.0"
@@ -4488,7 +4533,7 @@ ts-node@^10.7.0:
     create-require "^1.1.0"
     diff "^4.0.1"
     make-error "^1.1.1"
-    v8-compile-cache-lib "^3.0.0"
+    v8-compile-cache-lib "^3.0.1"
     yn "3.1.1"
 
 tslib@2.3.1:
@@ -4545,10 +4590,10 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-typescript@^4.6.3:
-  version "4.6.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.6.3.tgz#eefeafa6afdd31d725584c67a0eaba80f6fc6c6c"
-  integrity sha512-yNIatDa5iaofVozS/uQJEl3JRWLKKGJKh6Yaiv0GLGSuhpFJe7P3SbHZ8/yjAHRQwKRoA6YZqlfjXWmVzoVSMw==
+typescript@4.7.4:
+  version "4.7.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.7.4.tgz#1a88596d1cf47d59507a1bcdfb5b9dfe4d488235"
+  integrity sha512-C0WQT0gezHuw6AdY1M2jxUO83Rjf0HP7Sk1DtXj6j1EwkQNZrHAg2XPWlq62oqEhYvONq5pkC2Y9oPljWToLmQ==
 
 ua-parser-js@^0.7.30:
   version "0.7.31"
@@ -4612,10 +4657,10 @@ uuid@^3.3.3:
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.4.0.tgz#b23e4358afa8a202fe7a100af1f5f883f02007ee"
   integrity sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==
 
-v8-compile-cache-lib@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/v8-compile-cache-lib/-/v8-compile-cache-lib-3.0.0.tgz#0582bcb1c74f3a2ee46487ceecf372e46bce53e8"
-  integrity sha512-mpSYqfsFvASnSn5qMiwrr4VKfumbPyONLCOPmsR3A6pTY/r0+tSaVbgPWSAIuzbk3lCTa+FForeTiO+wBQGkjA==
+v8-compile-cache-lib@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/v8-compile-cache-lib/-/v8-compile-cache-lib-3.0.1.tgz#6336e8d71965cb3d35a1bbb7868445a7c05264bf"
+  integrity sha512-wa7YjyUGfNZngI/vtK0UHAN+lgDCxBPCylVXGp0zu59Fz5aiGtNXaq3DhIov063MorB+VfufLh3JlF2KdTK3xg==
 
 v8-compile-cache@^2.0.3:
   version "2.1.0"
@@ -4808,6 +4853,11 @@ workerpool@6.2.0:
   resolved "https://registry.yarnpkg.com/workerpool/-/workerpool-6.2.0.tgz#827d93c9ba23ee2019c3ffaff5c27fccea289e8b"
   integrity sha512-Rsk5qQHJ9eowMH28Jwhe8HEbmdYDX4lwoMWshiCXugjtHqMD9ZbiqSDLxcsfdqsETPzVUtX5s1Z5kStiIM6l4A==
 
+workerpool@6.2.1:
+  version "6.2.1"
+  resolved "https://registry.yarnpkg.com/workerpool/-/workerpool-6.2.1.tgz#46fc150c17d826b86a008e5a4508656777e9c343"
+  integrity sha512-ILEIE97kDZvF9Wb9f6h5aXK4swSlKGUcOEGiIYb2OOu/IrDU9iwj0fD//SsA6E5ibwJxpEvhullJY4Sl4GcpAw==
+
 wrap-ansi@^6.2.0:
   version "6.2.0"
   resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-6.2.0.tgz#e9393ba07102e6c91a3b221478f0257cd2856e53"