如何解决SyntaxError：意外的令牌var在吞咽

Question

我有问题的吞咽。当我在终端上输入一些消息时，会显示给我这个消息。

var ngannotate = require('gulp-ng-annotate'); 

SyntaxError: Unexpected token var at Object.exports.runInThisContext (vm.js:76:16) at Module._compile (module.js:542:28) at Object.Module._extensions..js (module.js:579:10) at Module.load (module.js:487:32) at tryModuleLoad (module.js:446:12) at Function.Module._load (module.js:438:3) at Module.require (module.js:497:17) at require (internal/module.js:20:19) at Liftoff.handleArguments
(/usr/local/lib/node_modules/gulp/bin/gulp.js:116:3) at Liftoff. (/usr/local/lib/node_modules/gulp/node_modules/liftoff/index.js:198:16)

我不知道为什么发生这种情况。最后两周它正常工作。如何解决它？

的package.json

{ 
    "name": "conFusion", 
    "private": true, 
    "devDependencies": { 
     "browser-sync": "^2.18.8", 
     "del": "^2.2.2", 
     "gulp": "^3.9.1", 
     "gulp-cache": "^0.4.5", 
     "gulp-changed": "^2.0.0", 
     "gulp-concat": "^2.6.1", 
     "gulp-imagemin": "^3.1.1", 
     "gulp-jshint": "^2.0.4", 
     "gulp-minify-css": "^1.2.4", 
     "gulp-ng-annotate": "^2.0.0", 
     "gulp-notify": "^3.0.0", 
     "gulp-rename": "^1.2.2", 
     "gulp-rev": "^7.1.2", 
     "gulp-uglify": "^2.0.1", 
     "gulp-usemin": "^0.3.28", 
     "jshint": "^2.9.4", 
     "jshint-stylish": "^2.2.1" 
    }, 
    "engines": { 
     "node": ">=0.10.0" 
    } 
} 

一饮而尽file.js

var gulp = require('gulp'), 
    minifycss = require('gulp-minify-css'), 
    jshint = require('gulp-jshint'), 
    stylish = require('jshint-stylish'), 
    uglify = require('gulp-uglify'), 
    usemin = require('gulp-usemin'), 
    imagemin = require('gulp-imagemin'), 
    rename = require('gulp-rename'), 
    concat = require('gulp-concat'), 
    notify = require('gulp-notify'), 
    cache = require('gulp-cache'), 
    changed = require('gulp-changed'), 
    rev = require('gulp-rev'), 
    browserSync = require('browser-sync'), 
    del = require('del'), 
    var ngannotate = require('gulp-ng-annotate'); 

gulp.task('jshint', function() { 
    return gulp.src('app/scripts/**/*.js') 
     .pipe(jshint()) 
     .pipe(jshint.reporter(stylish)); 
}); 

// Clean 
gulp.task('clean', function() { 
    return del(['dist']); 
}); 

// Default task 
gulp.task('default', ['clean'], function() { 
    gulp.start('usemin', 'imagemin', 'copyfonts'); 
}); 

gulp.task('usemin', ['jshint'], function() { 
    return gulp.src('./app/**/*.html') 
     .pipe(usemin({ 
      css: [minifycss(), rev()], 
      js: [ngannotate(), uglify(), rev()] 
     })) 
     .pipe(gulp.dest('dist/')); 
}); 

// Images 
gulp.task('imagemin', function() { 
    return del(['dist/images']), gulp.src('app/images/**/*') 
     .pipe(cache(imagemin({ 
      optimizationLevel: 3, 
      progressive: true, 
      interlaced: true 
     }))) 
     .pipe(gulp.dest('dist/images')) 
     .pipe(notify({ 
      message: 'Images task complete' 
     })); 
}); 

gulp.task('copyfonts', ['clean'], function() { 
      gulp.src('./bower_components/font-awesome/fonts/**/*.  { 
        ttf, 
        woff, 
        eof, 
        svg 
       }*') 
       .pipe(gulp.dest('./dist/fonts')); gulp.src('./bower_components/bootstrap/dist/fonts/**/*.  { 
         ttf, 
         woff, 
         eof, 
         svg 
        }*') 
        .pipe(gulp.dest('./dist/fonts')); 
       }); 
      // Watch 
      gulp.task('watch', ['browser-sync'], function() { 
       // Watch .js files 
       gulp.watch('{app/scripts/**/*.js,app/styles/**/*.css,app/**/*.html}', ['usemin']); 
       // Watch image files 
       gulp.watch('app/images/**/*', ['imagemin']); 

      }); 

      gulp.task('browser-sync', ['default'], function() { 
       var files = [ 
        'app/**/*.html', 
        'app/styles/**/*.css', 
        'app/images/**/*.png', 
        'app/scripts/**/*.js', 
        'dist/**/*' 
       ]; 

       browserSync.init(files, { 
        server: { 
         baseDir: "dist", 
         index: "index.html" 
        } 
       }); 
       // Watch any files in dist/, reload on change 
       gulp.watch(['dist/**']).on('change', browserSync.reload); 
      }); 

我已使用的技术是

• angularjs
• 引导
• 一饮而尽

Answer 1

您已经将var放置在变量的堆栈定义的前面。在ngannotate之前删除var。

var ngannotate = require('gulp-ng-annotate'); 

到

ngannotate = require('gulp-ng-annotate'); 

压痕将是很好的在这种情况下

var gulp = require('gulp'), 
    minifycss = require('gulp-minify-css'), 
    jshint = require('gulp-jshint'), 
    stylish = require('jshint-stylish'), 
    uglify = require('gulp-uglify'), 
    usemin = require('gulp-usemin'), 
    imagemin = require('gulp-imagemin'), 
    rename = require('gulp-rename'), 
    concat = require('gulp-concat'), 
    notify = require('gulp-notify'), 
    cache = require('gulp-cache'), 
    changed = require('gulp-changed'), 
    rev = require('gulp-rev'), 
    browserSync = require('browser-sync'), 
    del = require('del'), 
    ngannotate = require('gulp-ng-annotate');