我正在尝试调试一个 grunt 错误，但我不确定从哪里开始。
这是我的输出：
$ grunt build
Running "clean:dist" (clean) task
Cleaning .tmp...OK
Cleaning dist/img...OK
Running "wiredep:app" (wiredep) task
Running "useminPrepare:html" (useminPrepare) task
Configuration changed for concat, cssmin
Running "copy:styles" (copy) task
Copied 32 files
Running "imagemin:dist" (imagemin) task
Fatal error: Cannot read property 'contents' of undefined
这是我的 Gruntfile：
'use strict';
var pkg = require('./package.json');
// # Globbing
// for performance reasons we're only matching one level down:
// 'test/spec/{,*/}*.js'
// use this if you want to recursively match all subfolders:
// 'test/spec/**/*.js'
module.exports = function (grunt) {
// Load grunt tasks automatically
require('load-grunt-tasks')(grunt);
// Time how long tasks take. Can help when optimizing build times
require('time-grunt')(grunt);
// Configurable paths for the application
var appConfig = {
//app: require('./bower.json').appPath || 'app',
app: __dirname,
dist: 'dist'
};
// Define the configuration for all the tasks
grunt.initConfig({
// Project settings
yeoman: appConfig,
// Watches files for changes and runs tasks based on the changed files
watch: {
bower: {
files: ['bower.json'],
tasks: ['wiredep']
},
js: {
files: ['<%= yeoman.app %>/scripts/{,*/}*.js',
'<%= yeoman.app %>/controllers/{,*/}*.js',
'<%= yeoman.app %>/factories/{,*/}*.js',
'<%= yeoman.app %>/filters/{,*/}*.js',
'<%= yeoman.app %>/js/{,*/}*.js'],
tasks: ['newer:jshint:all'],
options: {
livereload: '<%= connect.options.livereload %>'
}
},
jsTest: {
files: ['test/spec/{,*/}*.js'],
tasks: ['newer:jshint:test', 'karma']
},
styles: {
files: ['<%= yeoman.app %>/styles/{,*/}*.css'],
tasks: ['newer:copy:styles', 'autoprefixer']
},
gruntfile: {
files: ['Gruntfile.js']
},
livereload: {
options: {
livereload: '<%= connect.options.livereload %>'
},
files: [
'<%= yeoman.app %>/{,*/}*.html',
'.tmp/styles/{,*/}*.css',
'<%= yeoman.app %>/img/{,*/}*.{png,jpg,jpeg,gif,webp,svg}'
]
}
},
// The actual grunt server settings
connect: {
options: {
port: 9000,
// Change this to '0.0.0.0' to access the server from outside.
hostname: 'localhost',
livereload: 35729
},
livereload: {
options: {
open: true,
middleware: function (connect) {
return [
connect.static('.tmp'),
connect().use(
'/bower_components',
connect.static('./bower_components')
),
connect.static(appConfig.app)
];
}
}
},
test: {
options: {
port: 9001,
middleware: function (connect) {
return [
connect.static('.tmp'),
connect.static('test'),
connect().use(
'/bower_components',
connect.static('./bower_components')
),
connect.static(appConfig.app)
];
}
}
},
dist: {
options: {
open: true,
base: '<%= yeoman.dist %>'
}
}
},
// Make sure code styles are up to par and there are no obvious mistakes
jshint: {
options: {
jshintrc: '.jshintrc',
reporter: require('jshint-stylish')
},
all: {
src: [
'Gruntfile.js',
'<%= yeoman.app %>/scripts/{,*/}*.js',
'<%= yeoman.app %>/controllers/{,*/}*.js',
'<%= yeoman.app %>/factories/{,*/}*.js',
'<%= yeoman.app %>/filters/{,*/}*.js',
'<%= yeoman.app %>/js/{,*/}*.js'
]
},
test: {
options: {
jshintrc: 'test/.jshintrc'
},
src: ['test/spec/{,*/}*.js']
}
},
// Empties folders to start fresh
clean: {
dist: {
files: [{
dot: true,
src: [
'.tmp',
'<%= yeoman.dist %>/{,*/}*',
'!<%= yeoman.dist %>/.git*'
]
}]
},
server: '.tmp'
},
// Add vendor prefixed styles
autoprefixer: {
options: {
browsers: ['last 1 version']
},
dist: {
files: [{
expand: true,
cwd: '.tmp/styles/',
src: '{,*/}*.css',
dest: '.tmp/styles/'
}]
}
},
// Automatically inject Bower components into the app
wiredep: {
app: {
src: ['<%= yeoman.app %>/index.html'],
ignorePath: /\.\.\//
}
},
// Renames files for browser caching purposes
filerev: {
dist: {
src: [
'<%= yeoman.dist %>/scripts/{,*/}*.js',
'<%= yeoman.dist %>/styles/{,*/}*.css',
'<%= yeoman.dist %>/img/{,*/}*.{png,jpg,jpeg,gif,webp,svg}',
'<%= yeoman.dist %>/styles/font/*'
]
}
},
// Reads HTML for usemin blocks to enable smart builds that automatically
// concat, minify and revision files. Creates configurations in memory so
// additional tasks can operate on them
useminPrepare: {
html: '<%= yeoman.app %>/index.html',
options: {
dest: '<%= yeoman.dist %>',
flow: {
html: {
steps: {
//js: ['concat', 'uglifyjs'],
js: ['concat'],
css: ['cssmin']
},
post: {}
}
}
}
},
// Performs rewrites based on filerev and the useminPrepare configuration
usemin: {
html: ['<%= yeoman.dist %>/{,*/}*.html'],
css: ['<%= yeoman.dist %>/styles/{,*/}*.css'],
options: {
assetsDirs: ['<%= yeoman.dist %>','<%= yeoman.dist %>/img']
}
},
// The following *-min tasks will produce minified files in the dist folder
// By default, your `index.html`'s <!-- Usemin block --> will take care of
// minification. These next options are pre-configured if you do not wish
// to use the Usemin blocks.
// cssmin: {
// dist: {
// files: {
// '<%= yeoman.dist %>/styles/main.css': [
// '.tmp/styles/{,*/}*.css'
// ]
// }
// }
// },
// uglify: {
// dist: {
// files: {
// '<%= yeoman.dist %>/scripts/scripts.js': [
// '<%= yeoman.dist %>/scripts/scripts.js'
// ]
// }
// }
// },
// concat: {
// dist: {}
// },
imagemin: {
dist: {
options: { cache: false },
files: [{
expand: true,
cwd: '<%= yeoman.app %>/img',
src: '{,*/}*.{jpg,jpeg,gif,png}',
dest: '<%= yeoman.dist %>/img'
}]
}
},
svgmin: {
dist: {
files: [{
expand: true,
cwd: '<%= yeoman.app %>/img',
src: '{,*/}*.svg',
dest: '<%= yeoman.dist %>/img'
}]
}
},
htmlmin: {
dist: {
options: {
collapseWhitespace: true,
conservativeCollapse: true,
collapseBooleanAttributes: true,
removeCommentsFromCDATA: true,
removeOptionalTags: true
},
files: [{
expand: true,
cwd: '<%= yeoman.dist %>',
src: ['*.html', 'views/{,*/}*.html', 'directives/{,*/}*.html'],
dest: '<%= yeoman.dist %>'
}]
}
},
// ng-annotate tries to make the code safe for minification automatically
// by using the Angular long form for dependency injection.
ngAnnotate: {
dist: {
files: [{
expand: true,
cwd: '.tmp/concat/scripts',
src: ['*.js', '!oldieshim.js'],
dest: '.tmp/concat/scripts'
}]
}
},
// Replace Google CDN references
cdnify: {
dist: {
html: ['<%= yeoman.dist %>/*.html']
}
},
// Copies remaining files to places other tasks can use
copy: {
dist: {
files: [{
expand: true,
dot: true,
cwd: '<%= yeoman.app %>',
dest: '<%= yeoman.dist %>',
src: [
'*.{ico,png,txt}',
'.htaccess',
'*.html',
'views/{,*/}*.html',
'directives/{,*/}*.html',
'img/{,*/}*.{webp}',
'fonts/*'
]
}, {
expand: true,
cwd: '.tmp/img',
dest: '<%= yeoman.dist %>/img',
src: ['generated/*']
}]
},
styles: {
expand: true,
cwd: '<%= yeoman.app %>/styles',
dest: '.tmp/styles/',
src: '{,*/}*.css'
}/*,
fonts: {
expand: true,
cwd: '<%= yeoman.app %>/fonts',
dest: '.tmp/fonts/',
src: '*'
}*/
//,
// css: {
// expand: true,
// cwd: '<%= yeoman.app %>/css/compiled',
// dest: '.tmp/css/compiled/',
// src: '{,*/}*.css'
// }
},
// Run some tasks in parallel to speed up the build process
concurrent: {
server: [
'copy:styles'
],
test: [
'copy:styles'
],
dist: [
'copy:styles',
'imagemin',
'svgmin'
]
},
// Test settings
karma: {
unit: {
configFile: 'test/karma.conf.js',
singleRun: true
}
}
});
grunt.registerTask('serve', 'Compile then start a connect web server', function (target) {
if (target === 'dist') {
return grunt.task.run(['build', 'connect:dist:keepalive']);
}
grunt.task.run([
'clean:server',
'wiredep',
'concurrent:server',
'autoprefixer',
'connect:livereload',
'watch'
]);
});
grunt.registerTask('test', [
'clean:server',
'concurrent:test',
'autoprefixer',
'connect:test'//,
//'karma'
]);
grunt.registerTask('build', [
'clean:dist',
'wiredep',
'useminPrepare',
//'concurrent:dist',
'copy:styles',
//'copy:css',
'imagemin',
'svgmin',
'autoprefixer',
'concat',
'ngAnnotate',
'copy:dist',
'cdnify',
'cssmin',
//'uglify',
//'filerev',
'usemin',
'htmlmin'
]);
grunt.registerTask('default', [
'newer:jshint',
'test',
'build'
]);
};
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