include exception identifier in catch blocks

[wentokay]

Problem

when the try/catch exception identifier is excluded, during the build phase, rollup is throwing the error

SyntaxError: Unexpected token in node_modules/@solana/web3.js/lib/index.browser.esm.js

Summary of Changes

change

try {} catch {}

to

try {} catch(_err) {}

[wentokay]

minimal example extracted from an existing project here

https://github.com/wentokay/catch-example

& failing build logs

https://github.com/wentokay/catch-example/runs/6395757798?check_suite_focus=true

Run yarn build
  yarn build
  shell: /usr/bin/bash -e {0}
yarn run v1.[2](https://github.com/wentokay/catch-example/runs/6395757798?check_suite_focus=true#step:5:2)2.18
warning package.json: No license field
$ rollup -c

src/index.ts → dist/index.js...
[!] (plugin at position [3](https://github.com/wentokay/catch-example/runs/6395757798?check_suite_focus=true#step:5:3)) SyntaxError: Unexpected token (8[4](https://github.com/wentokay/catch-example/runs/6395757798?check_suite_focus=true#step:5:4)3[8](https://github.com/wentokay/catch-example/runs/6395757798?check_suite_focus=true#step:5:8):18) in /home/runner/work/catch-example/catch-example/node_modules/@solana/web3.js/lib/index.browser.esm.js