Gulpuglifyerror unable to minify javascript

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Why unable to minify JavaScript? #281

Why unable to minify JavaScript? #281

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Happens in my gulp task every time. There is an unhandled error event and it doesn’t say what part exactly is not minify-able? Using version 2.1.2 here

events.js:163 throw er; // Unhandled 'error' event ^ GulpUglifyError: unable to minify JavaScript at createError (/home/michael-heuberger/code/videomail-client/node_modules/gulp-uglify/lib/create-error.js:6:14) at wrapper (/home/michael-heuberger/code/videomail-client/node_modules/lodash/_createHybrid.js:87:15) at trycatch (/home/michael-heuberger/code/videomail-client/node_modules/gulp-uglify/minifier.js:26:12) at DestroyableTransform.minify [as _transform] (/home/michael-heuberger/code/videomail-client/node_modules/gulp-uglify/minifier.js:79:19) at DestroyableTransform.Transform._read (/home/michael-heuberger/code/videomail-client/node_modules/readable-stream/lib/_stream_transform.js:159:10) at DestroyableTransform.Transform._write (/home/michael-heuberger/code/videomail-client/node_modules/readable-stream/lib/_stream_transform.js:147:83) at doWrite (/home/michael-heuberger/code/videomail-client/node_modules/readable-stream/lib/_stream_writable.js:345:64) at writeOrBuffer (/home/michael-heuberger/code/videomail-client/node_modules/readable-stream/lib/_stream_writable.js:334:5) at DestroyableTransform.Writable.write (/home/michael-heuberger/code/videomail-client/node_modules/readable-stream/lib/_stream_writable.js:271:11) at Transform.ondata (_stream_readable.js:555:20) error Command failed with exit code 1. 

The text was updated successfully, but these errors were encountered:

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GulpUglifyError: unable to minify JavaScript #349

GulpUglifyError: unable to minify JavaScript #349

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"gulp": "3.9.1", "gulp-clean-css": "2.0.12", "gulp-concat": "2.6.0", "gulp-imagemin": "3.0.3", "gulp-nodemon": "2.1.0", "gulp-rename": "1.2.2", "gulp-ruby-sass": "2.1.0", "gulp-sourcemaps": "1.6.0", "gulp-uglify": "2.0.0", 

gulp.task('concat-prod', () => < return gulp.src(jsFilesArray) .pipe(concat('client.js')) .pipe(gulp.dest('assets/build/')) .pipe(uglify()) .pipe(rename('client.min.js')) .pipe(gulp.dest('assets/build/')); >); 

internal/streams/legacy.js:59 throw er; // Unhandled stream error in pipe. ^ GulpUglifyError: unable to minify JavaScript at createError (/home/user/user/client/node_modules/gulp-uglify/lib/create-error.js:6:14) at wrapper (/home/user/user/client/node_modules/lodash/_createHybrid.js:87:15) at trycatch (/home/user/user/client/node_modules/gulp-uglify/minifier.js:26:12) at DestroyableTransform.minify [as _transform] (/home/user/user/client/node_modules/gulp-uglify/minifier.js:76:19) at DestroyableTransform.Transform._read (/home/user/user/client/node_modules/through2/node_modules/readable-stream/lib/_stream_transform.js:159:10) at DestroyableTransform.Transform._write (/home/user/user/client/node_modules/through2/node_modules/readable-stream/lib/_stream_transform.js:147:83) at doWrite (/home/user/user/client/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:313:64) at writeOrBuffer (/home/user/user/client/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:302:5) at DestroyableTransform.Writable.write (/home/user/user/client/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:241:11) at DestroyableTransform.ondata (internal/streams/legacy.js:16:26) 

The text was updated successfully, but these errors were encountered:

This is a valid issue even with Pipeline enabled in v3.0.1 and should be reopened please.

const $ = require( 'gulp-load-plugins' )(); const DIST_CATALOG_DEV = 'dist/dev/proj_catalog/includes/assets' const DIST_CATALOG_SRC = 'dist/plaintext/proj_catalog/includes/assets' const DIST_CATALOG_PROD = 'dist/minified/proj_catalog/includes/assets' GULP.task( 'javascript:catalog:extra', function() < return PIPELINE( GULP.src( ['src/assets/proj_catalog/javascript/**/*.js'] ), // Concatenate streams into a single file $.concat( 'catalog-extra.js' ), $.cond( PRODUCTION, $.uglify( ) ), $.cond( PRODUCTION, $.extname( '.min.js' ) ), $.cond( PRODUCTION, GULP.dest( DIST_CATALOG_PROD + '/jscript' ) ) ); >); 

This is the error message even with Pipeline:

/user/Name/folder/my-project/node_modules/readable-stream/lib/internal/streams/pipeline.js:22
if (err) throw err;
^
GulpUglifyError: unable to minify JavaScript
at createError (/user/Name/folder/my-project/node_modules/gulp-uglify/lib/create-error.js:6:14)
at apply (/user/Name/folder/my-project/node_modules/lodash/_apply.js:16:25)
at wrapper (/user/Name/folder/my-project/node_modules/lodash/_createCurry.js:41:12)
at /user/Name/folder/my-project/node_modules/gulp-uglify/lib/minify.js:55:15
at DestroyableTransform._transform (/user/Name/folder/my-project/node_modules/gulp-uglify/composer.js:12:19)
at DestroyableTransform.Transform._read (/user/Name/folder/my-project/node_modules/through2/node_modules/readable-stream/lib/_stream_transform.js:184:10)
at DestroyableTransform.Transform._write (/user/Name/folder/my-project/node_modules/through2/node_modules/readable-stream/lib/_stream_transform.js:172:83)
at doWrite (/user/Name/folder/my-project/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:428:64)
at writeOrBuffer (/user/Name/folder/my-project/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:417:5)
at DestroyableTransform.Writable.write (/user/Name/folder/my-project/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:334:11)

Not particularly enlightening and after hours of debugging, I found that what triggers the fail is passing options.

So, using $.uglify( ) or similar will fail and $.uglify() will work.

Please look into this again.
Thanks

Источник

GulpUglifyError:Unable to minify JavaScript

The main error is generated when you’re using ES6 format. Use the gulp-uglify-es module instead of ‘gulp-uglify’ to overcome this error.

var uglify = require('gulp-uglify-es').default; 

Note: gulp-uglify-es is no longer being maintained. You may want to use terser / gulp-terser instead:

Solution 2

To see the error in console:

var gutil = require('gulp-util'); gulp.task('concat', function() < return gulp.src('app/**/*.js') // .pipe(concat('script.js')) .pipe(uglify()) .on('error', function (err) < gutil.log(gutil.colors.red('[Error]'), err.toString()); >) .pipe(gulp.dest('./dist/')) >); 

To find the exact file, with line number of error register and run this task:

var pump = require('pump'); gulp.task('uglify-error-debugging', function (cb) < pump([ gulp.src('app/**/*.js'), uglify(), gulp.dest('./dist/') ], cb); >); 

Solution 3

I think the top answers here are not explaining how to get the error. The docs have a section on error handling:

gulp-uglify emits an ‘error’ event if it is unable to minify a specific file

So, just capture the error and do whatever you want with it (such as logging to console) to see the filename, line number, and additional info:

uglify().on('error', console.error) 

This gives you a super helpful error!

< GulpUglifyError: unable to minify JavaScript at [stack trace]) cause: < SyntaxError: Continue not inside a loop or switch [stack trace] message: 'Continue not inside a loop or switch', filename: 'ProductForm.js', line: 301, col: 37, pos: 10331 >, plugin: 'gulp-uglify', fileName: '/asset/src/js/foo/ProductForm.js', showStack: false > 

Solution 4

Have you used ES6 format in your script file? If so try ES5 now because when you do gulp-uglify it doesnt understand ES6 format as of now and after that try your code

and run the task gulp concat it will work

Solution 5

For me, it was a deprecated option «preserveComments» that generated the error (and completely crashed the script).

gulp.task('concat', function() < return gulp.src('app/**/*.js') .pipe(uglify()) .on('error', function (err) < console.log( err ) >) .pipe(gulp.dest('./dist/')) >); 

Источник

GulpUglifyError: unable to minify JavaScript (Angular 4)

I found how to resolve this issue. Basically uglify doesn’t work with ES6 (right now just with ES5). For resolving this problem we need to Transpilation result to ES5 with TypeScript help, and then run minification.,I don’t know how to resolve this problem. Any ideas how to resolve this problem?, Taking a coding test tomorrow to which I probably have all the answers ,ExpressionEngine® Answers

var ts = require('gulp-typescript'); var uglify = require('gulp-uglifyjs'); . .pipe(ts(< target: "es5", allowJs: true, module: "commonjs", moduleResolution: "node" >)) .pipe(uglify()) 

Answer by Braylee Hughes

This is my gulp scripts:,I have a problem with uglify main bundle.js file.,After running this scripts I catch next exception:, No suggested jump to results

gulp.task("compile", () => < let tsResult = gulp.src("app/**/*.ts") .pipe(sourcemaps.init()) .pipe(tsProject()); return tsResult.js .pipe(sourcemaps.write(".", < sourceRoot: '/app' >)) .pipe(concat('bundle.js')) .pipe(gulp.dest('app/_Dist/')); >); gulp.task("minify", ["compile"], function () < return gulp.src(['app/_Dist/bundle.js']) .pipe(concat('bundle.min.js')) .pipe(plumber()) .pipe(uglify()) .on('error', function (err) < gutil.log(gutil.colors.red('[Error]'), err.toString()); >) .pipe(plumber.stop()) .pipe(gulp.dest(outputLocation)); >); 

Answer by Samara Delacruz

gulp.task('compile-js', function () < // app.js is your main JS file with all your module inclusions return browserify(< extensions: ['.js', '.jsx'], entries: 'javascripts/app.js', debug: true >) .transform('babelify', < presets: ['es2015', 'react'] >) .bundle() .pipe(source('bundle.min.js')) .pipe(buffer()) .pipe(sourcemaps.init()) .pipe(uglify()) .pipe(sourcemaps.write('./maps')) .pipe(gulp.dest('dist')) .pipe(livereload()) >) 

GulpUglifyError: unable to minify JavaScript 

Это часть моего package.json:

 "dependencies": < "animate.css": "^3.5.2", "aos": "^2.2.0", "autosize": "^4.0.0", "axios": "^0.16.2", "es6-docready": "^1.0.0", "foundation-icon-fonts": "^0.1.1", "foundation-sites": "^6.4.3", "gulp-clean-css": "^3.9.0", "gulp-cssimport": "^5.1.1", "jquery": "^3.1.1", "jquery-ui-bundle": "^1.12.1", "material-design-icons": "^3.0.1", "swiper": "^3.4.2", "vue": "^2.4.4" >, "repository": < "type": "git", "url": "[git-url-of-your-project]" >, "devDependencies": < "babel-preset-es2015": "^6.16.0", "babel-preset-react": "^6.16.0", "babelify": "^7.3.0", "browserify": "^14.3.0", "browserify-shim": "^3.8.12", "gulp": "^3.9.1", "gulp-clean-css": "^3.0.4", "gulp-clone": "^1.0.0", "gulp-concat": "^2.6.0", "gulp-concat-css": "^2.3.0", "gulp-cssimport": "^5.0.0", "gulp-foreach": "^0.1.0", "gulp-htmlmin": "^3.0.0", "gulp-less": "^3.3.2", "gulp-livereload": "^3.8.1", "gulp-sourcemaps": "^1.6.0", "gulp-uglify": "^2.1.2", "streamqueue": "^1.1.1", "vinyl-buffer": "^1.0.0", "vinyl-source-stream": "^1.1.0" >, 

npm install --save-dev babel-preset-es2017 

Я не получаю никаких ошибок во время компиляции, но я получаю эту ошибку на консоли браузера, когда я запускаю свой код в своем браузере:

Uncaught ReferenceError: regeneratorRuntime is not defined 

Answer by Archie Stein

Minify JavaScript with UglifyJS3.,cause: The original UglifyJS error, if available.,Most UglifyJS error messages have the following properties:,github.com/terinjokes/gulp-uglify/

var gulp = require('gulp');var uglify = require('gulp-uglify');var pipeline = require('readable-stream').pipeline; gulp.task('compress', function () < return pipeline( gulp.src('lib/*.js'), uglify(), gulp.dest('dist') );>);

Answer by Cecilia Morgan

I am getting above error on gulp Build. so far i have tried all solutions of GulpUglifyError:Unable to minify JavaScript to no success. any ideas?,2 GulpUglifyError: unable to minify JavaScript (Angular 4),1 gulp js gave the error when i changed my js files..| throw er,2 Gulp.js can’t compile angular.js project due to excessive js errors?

[12:20:17] Finished 'images' after 12 s Error from uglify in compress task Error in plugin 'gulp-uglify' Message: D:\projects\Source\app\scripts\vendor.js: SyntaxError: Unexpected token: keyword (default) Details: fileName: D:\projects\Source\app\scripts\vendor.js lineNumber: 96908 [12:23:39] Finished 'fonts' after 3.55 min [12:23:49] Finished 'jshint' after 3.75 min 

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