[Vuejs]-Vue file test coverage not showing in VueJS & Mocha project

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https://github.com/istanbuljs/nyc#typescript-projects

TypeScript projects

Please start with the pre-configured @istanbuljs/nyc-config-typescript preset.

https://www.npmjs.com/package/@istanbuljs/nyc-config-typescript

First install the dependencies:

npm i -D nyc source-map-support ts-node @istanbuljs/nyc-config-typescript

And write a .nycrc that looks like this:

{
   "extends": "@istanbuljs/nyc-config-typescript",
   // OPTIONAL if you want coverage reported on every file, including those that aren't tested:
   "all": true
}

In `test/mocha.opts:

--require ts-node/register #replace with ts-node/register/transpile-only if you have custom types
--require source-map-support/register
--recursive
<glob for your test files>

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