remove use strict does not work

const gulp = require('gulp')
const del = require('del')
const removeUseStrict = require('gulp-remove-use-strict')

gulp.task('remove-strict', ['remove-strict:clean'], function () {
return gulp.src('./dist/static/js/*.js')
.pipe(removeUseStrict())
.pipe(gulp.dest('./dist/newJS/'))
})
gulp.task('remove-strict:clean', [], function () {
return del(['./dist/newJS/'], { force: true })
})

Start by reproducing the Gulp task against the files matched by ./dist/static/js/*.js and compare the results written to ./dist/newJS/. Inspect the removeUseStrict() step and verify whether the generated JavaScript still contains strict-mode directives; done means the task reliably removes them.

Written by the indexing model from the issue text.