Duplicate data property in object literal not allowed in strict mode

[anshad]

Task:

gulp.task('scripts', function() {

function createErrorHandler(name) {
return function (err) {
console.error('Error from ' + name + ' in compress task', err.toString());
};
}

return gulp.src(srcDir + '/app/**/*.js')
.on('error', createErrorHandler('gulp.src'))
.pipe(removeUseStrict())
.on('error', createErrorHandler('remove'))
.pipe(sourcemaps.init())
.pipe(concat('app.min.js'))
//.pipe(gulpif(!dist, uglify()))
.pipe(gulpif(!dist, gulp.dest(devDir + '/scripts/')))
.pipe(gulpif(!dist, connect.reload()))
.pipe(gulpif(dist, uglify())) // gulpif(dist, uglify())
.on('error', createErrorHandler('uglify'))
.pipe(gulpif(dist, stripDebug()))
.on('error', createErrorHandler('strip'))
.pipe(gulpif(!dist, sourcemaps.write('/')))
.pipe(gulpif(dist, gulp.dest(distDir + '/scripts/')))
.on('error', createErrorHandler('gulp.dest'));
});

It gives me this error:

/Users/anshad/Desktop/GitLab/Workspace/FrontEnd/node_modules/remove-use-strict/node_modules/esprima/esprima.js:3872
throw e;
^

Error: Line 26: Duplicate data property in object literal not allowed in strict mode
at throwError (/Users/anshad/Desktop/GitLab/Workspace/FrontEnd/node_modules/remove-use-strict/node_modules/esprima/esprima.js:1161:21)
at throwErrorTolerant (/Users/anshad/Desktop/GitLab/Workspace/FrontEnd/node_modules/remove-use-strict/node_modules/esprima/esprima.js:1172:24)
at parseObjectInitialiser (/Users/anshad/Desktop/GitLab/Workspace/FrontEnd/node_modules/remove-use-strict/node_modules/esprima/esprima.js:1460:25)
at parsePrimaryExpression (/Users/anshad/Desktop/GitLab/Workspace/FrontEnd/node_modules/remove-use-strict/node_modules/esprima/esprima.js:1556:20)
at /Users/anshad/Desktop/GitLab/Workspace/FrontEnd/node_modules/remove-use-strict/node_modules/esprima/esprima.js:3609:38
at trackLeftHandSideExpressionAllowCall (/Users/anshad/Desktop/GitLab/Workspace/FrontEnd/node_modules/remove-use-strict/node_modules/esprima/esprima.js:3504:61)
at parsePostfixExpression (/Users/anshad/Desktop/GitLab/Workspace/FrontEnd/node_modules/remove-use-strict/node_modules/esprima/esprima.js:1703:20)
at /Users/anshad/Desktop/GitLab/Workspace/FrontEnd/node_modules/remove-use-strict/node_modules/esprima/esprima.js:3609:38
at parseUnaryExpression (/Users/anshad/Desktop/GitLab/Workspace/FrontEnd/node_modules/remove-use-strict/node_modules/esprima/esprima.js:1784:16)
at /Users/anshad/Desktop/GitLab/Workspace/FrontEnd/node_modules/remove-use-strict/node_modules/esprima/esprima.js:3609:38