v0.9.0 -- require provider on constructor

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@0xsequence/ethauth",
-  "version": "0.8.1",
+  "version": "0.9.0",
   "description": "ETHAuth -- self-signed authorization proofs",
   "repository": "https://github.com/0xsequence/ethauth.js",
   "main": "dist/index.js",

src/ethauth.ts

@@ -14,29 +14,40 @@ export const ETHAuthEIP712Domain = {
 
 export class ETHAuth {
   validators: ValidatorFunc[]
-  ethereumJsonRpcURL: string
   provider: ethers.providers.JsonRpcProvider
   chainId: number
 
-  constructor(...validators: ValidatorFunc[]) {
+  constructor(provider: string | ethers.providers.JsonRpcProvider, ...validators: ValidatorFunc[]) {
+    this.configProvider(provider)
+
     if (validators.length == 0) {
       this.validators = [ ValidateEOAProof, ValidateContractAccountProof ]
     }else {
       this.validators = validators
     }
   }
 
-  configJsonRpcProvider = async (ethereumJsonRpcURL: string) => {
-    this.provider = new ethers.providers.JsonRpcProvider(ethereumJsonRpcURL)
+  configProvider = async (provider: string | ethers.providers.JsonRpcProvider) => {
+    if (!provider || (typeof provider === 'string' && provider.length === 0)) {
+      // skip if empty provider url is passed
+      return
+    }
+
+    if (typeof provider === 'string') {
+      this.provider = new ethers.providers.JsonRpcProvider(provider)
+    } else {
+      this.provider = provider
+    }
 
-    const netVersion = await this.provider.send('net_version', [])
-    this.chainId = parseInt(netVersion)
+    try {
+      const hexChainId = await this.provider.send('eth_chainId', [])
+      this.chainId = ethers.BigNumber.from(hexChainId).toNumber()
+    } catch (err) {
+    }
 
-    if (!this.chainId || this.chainId === 0 || this.chainId === NaN) {
+    if (!this.chainId || this.chainId === 0 || Number.isNaN(this.chainId)) {
       throw new Error('ethauth: unable to get chainId')
     }
-
-    this.ethereumJsonRpcURL = ethereumJsonRpcURL
   }
 
   configValidators = (...validators: ValidatorFunc[]) => {

tests/ethauth.test.ts

@@ -3,6 +3,12 @@ import { ethers } from 'ethers'
 
 describe('ETHAuth', () => {
 
+  test('init', async () => {
+    const ethAuth = new ETHAuth('https://nodes.sequence.app/polygon/test')
+    await sleep(1000)
+    expect(ethAuth.chainId).toEqual(137)
+  })
+
   test('encode and decode', async () => {
     // TODO/NOTE: this expected value is fixed, but the time in iat and exp moves forward,
     // this test is brittle and eventually will fail.
@@ -49,7 +55,7 @@ describe('ETHAuth', () => {
     proof.signature = await wallet.signMessage(digest)
 
 
-    const ethAuth = new ETHAuth()
+    const ethAuth = new ETHAuth('https://nodes.sequence.app/polygon/test')
     const proofString = await ethAuth.encodeProof(proof)
 
     console.log('proof:', proof)
@@ -74,3 +80,9 @@ describe('ETHAuth', () => {
   })
 
 })
+
+const sleep = (time: number) => {
+  return new Promise((resolve, reject) => {
+    setTimeout(resolve, time)
+  })
+}