how to solve error code 1 when running npm - npm

Question

I am using Visual Studio Code on MacOS latest version.
I am getting many errors when I try to run npm start that I have posted in a separate question here:
unable to solve error code 1 when running"npm install"
I thought to install all possible modules again to solve the issue when I try to run:
npm i -g npm
I even get errors that part of that is copied here:
ERR! code 1
npm ERR! git dep preparation failed
npm ERR! command /usr/local/lib/node_modules/node/bin/node
/usr/local/lib/node_modules/npm/bin/npm-cli.js install --force --
cache=/Users/afshinshahpari/.npm --prefer-offline=false --prefer-online=false --
offline=false --no-progress --no-save --no-audit --include=dev --include=peer --
include=optional --no-package-lock-only --no-dry-run
npm ERR! npm WARN using --force Recommended protections disabled.
npm ERR! npm WARN old lockfile
npm ERR! npm WARN old lockfile The package-lock.json file was created with an old
version of npm,
npm ERR! npm WARN old lockfile so supplemental metadata must be fetched from the
registry.
npm ERR! npm WARN old lockfile
npm ERR! npm WARN old lockfile This is a one-time fix-up, please be patient...
npm ERR! npm WARN old lockfile
npm ERR! npm WARN deprecated fsevents#1.2.11: fsevents 1 will break on node v14+ and
could be using insecure binaries. Upgrade to fsevents 2.
I tried to fix the issue using this article:
npm ERR! git dep preparation failed when trying to install package.json
but when running "npm audit fix" i get a new set of errors:
npm ERR! code ENOLOCK
npm ERR! audit This command requires an existing lockfile.
npm ERR! audit Try creating one first with: npm i --package-lock-only
npm ERR! audit Original error: loadVirtual requires existing shrinkwrap file
npm ERR! A complete log of this run can be found in:
npm ERR! /Users/afshinshahpari/.npm/_logs/2021-08-16T12_46_15_639Z-debug.log
in order to solve it, I used
npm i --package-lock-only
but no success.

Answer 1

Here's the solution bro try this.
Step 1:
$ npm cache clean --force
Step 2
Delete node_modules by
$ rm -rf node_modules package-lock.json folder
or delete it manually by going into the directory and right-click > delete / move to trash. Also, delete package-lock.json file too.
Step 3
npm install
To start again,
$ npm start
This worked for me. Hopes it works for you too.
PS: If it is still there, kindly check the error it is displaying in red and act accordingly. This error is specific to Node.js environment.