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我使用classes syntax書寫基本的JavaScript,並試圖uglify it with gulp,但得到這個錯誤:如何uglify JavaScript類?
events.js:72
throw er; // Unhandled 'error' event
我只是用示例代碼從Mozilla的網站:
class Polygon {
constructor(height, width) {
this.height = height;
this.width = width;
}
}
並沒有什麼特別的我gulp文件 - 完美適用於任何非class js:
// Include gulp
var gulp = require('gulp');
// Include Our Plugins
var jshint = require('gulp-jshint');
var concat = require('gulp-concat');
var uglify = require('gulp-uglify');
var rename = require('gulp-rename');
// Lint Task
gulp.task('lint', function() {
return gulp.src('js/*.js')
.pipe(jshint())
.pipe(jshint.reporter('default'));
});
// Concatenate & Minify JS
gulp.task('scripts', function() {
return gulp.src('js/*.js')
.pipe(concat('all.js'))
.pipe(gulp.dest('dist/js'))
.pipe(rename('all.min.js'))
.pipe(uglify())
.pipe(gulp.dest('dist/js'));
});
// Watch Files For Changes
gulp.task('watch', function() {
gulp.watch('js/*.js', ['lint', 'scripts']);
gulp.watch('scss/*.scss', ['sass']);
});
// Default Task
gulp.task('default', ['lint', 'scripts', 'watch']);
類只在ECMAScript6中可用;你確定你的環境支持ES6嗎? –
你指的是哪個環境?代碼在我的瀏覽器中按預期工作,並通過lint。 –
env你正在運行吞噬 –