[Bug]: Purgecss not purging bootstrap.js

[raccoonwannafly]

Purgecss not purging bootstrap .js

I'm using customized bootstrap while using gulp-purgecss plugin to purge excess css
However it seems like it doesn't look into the javascript files, for example in my html the class .show is not included, it's actually from Bootstrap's javascript file, so purgecss in my case isn't watching for .js files
If someone could look into my gulpfile setting to verify I'd_be appreciated
My gulpfile.js:

const sass = require('gulp-sass')(require('sass'))
const purgecss = require('gulp-purgecss')

function buildStyles() {
    return src('sass/**/*.scss')
    .pipe(sass())
    .pipe(purgecss({ content: ['*.html', '../dist/*.js'] }))
    .pipe(dest('dist')) 
}

function watchTask() {
    watch(['sass/**/*.scss', '*.html'], buildStyles) 
    watch(['sass/**/*.scss', './dist/*.js'], buildStyles) 
}

exports.default = series(buildStyles, watchTask);