build: add ESLint to script/lint and containerize linting (closes #152)

src/popup/views/confirmTx.js

@@ -2,20 +2,12 @@
 // Shows transaction details, warnings, errors. On Sign & Send,
 // reads inline password, decrypts secret, signs and broadcasts.
 
-const {
-    parseEther,
-    parseUnits,
-    formatEther,
-    formatUnits,
-    Contract,
-} = require("ethers");
+const { parseEther, parseUnits, formatEther, Contract } = require("ethers");
 const {
     $,
     showError,
     hideError,
     showView,
-    showFlash,
-    flashCopyFeedback,
     addressTitle,
     escapeHtml,
     renderAddressHtml,
@@ -23,7 +15,7 @@ const {
     goBack,
     onViewLeave,
 } = require("./helpers");
-const { state, currentNetwork } = require("../../shared/state");
+const { state } = require("../../shared/state");
 const { getSignerForAddress } = require("../../shared/wallet");
 const { decryptWithPassword } = require("../../shared/vault");
 const { formatUsd, getPrice } = require("../../shared/prices");
@@ -399,7 +391,7 @@ function clearPassword() {
     hideError("confirm-tx-password-error");
 }
 
-function init(ctx) {
+function init(_ctx) {
     onViewLeave("confirm-tx", clearPassword);
 
     $("btn-confirm-send").addEventListener("click", async () => {
@@ -421,7 +413,7 @@ function init(ctx) {
                 wallet.encryptedSecret,
                 password,
             );
-        } catch (e) {
+        } catch {
             showError(
                 "confirm-tx-password-error",
                 "That password is incorrect. Please try again.",