Error: This is not a typed array when using gulp autoprefixer -

i have following gulp file:

'use strict'  var gulp = require('gulp'),     rename = require("gulp-rename"),     cssbeautify = require('gulp-cssbeautify'),     autoprefixer = require('gulp-autoprefixer');  gulp.task('css-prefix', function() {     return gulp.src('css/*.css')         .pipe(autoprefixer())         .pipe(gulp.dest('fcss')); }); 

now when run gulp command folllowing error:

gulp css-prefix 

error: not typed array.

why getting error ?

it appears need upgrade node.js version @ least >= 4.5. see github typed array issue , autoprefixer dependencies.