[CORL-678] Transition to eslint (#2634)

* chore: setup eslint

* chore: tslint checks with types & check for import order

* chore: complete eslint transition

* fix: tests

* fix: linting after rebase, faster lint for lint-staged

* chore: remove line

* fix: lint rules

* feat: add a11y linter and fix errors

* fix: tests

scripts/watcher/CommandExecutor.ts

@@ -21,8 +21,8 @@ export default class CommandExecutor implements Executor {
   private args?: ReadonlyArray<string>;
   private spawnMultiple: boolean;
   private runOnInit: boolean;
-  private isRunning: boolean = false;
-  private shouldRespawn: boolean = false;
+  private isRunning = false;
+  private shouldRespawn = false;
   private spawnProcessDebounced?: (() => void) & Cancelable;
 
   constructor(cmd: string, opts: CommandExecutorOptions = {}) {
@@ -67,7 +67,7 @@ export default class CommandExecutor implements Executor {
     child.on("close", (code: number) => {
       this.isRunning = false;
       if (code !== 0 && code !== null) {
-        // tslint:disable-next-line: no-console
+        // eslint-disable-next-line no-console
         console.log(chalk.red(`Command exited with ${code}`));
       }
       if (this.shouldRespawn) {