Gulp - TypeError:无法分配给bower/bootstrap.css的只读属性'cwd'

Question

我只是要掌握Gulp.js,这是我唯一无法解决的错误.

我已经通过bower安装bootstrap,我正在尝试缩小bootstrap css.

这是我的gulp任务;

gulp.task('minifycss', function() {
gulp.src('www/css/animate.css', 'www/bower_components/bootstrap/dist/css/bootstrap.css')
    .pipe(minifycss({compatibility: 'ie8'}))
    .pipe(gulp.dest('www-deploy/css/'));
});

但是,当我运行我的主要gulp任务.它声明该文件是"只读"

Karls-MacBook-Pro:cmp-2015 karltaylor$ gulp
[13:48:50] Using gulpfile ~/Documents/web/cmp-2015/gulpfile.js
[13:48:50] Starting 'sassMin'...
[13:48:50] Finished 'sassMin' after 12 ms
[13:48:50] Starting 'minifycss'...
[13:48:50] 'minifycss' errored after 508 ?s
[13:48:50] TypeError: Cannot assign to read only property 'cwd' of www/bower_components/bootstrap/dist/css/bootstrap.css
    at Object.gs.createStream (/Users/karltaylor/Documents/web/cmp-2015/node_modules/gulp/node_modules/vinyl-fs/node_modules/glob-stream/index.js:19:46)
    at Object.gs.create (/Users/karltaylor/Documents/web/cmp-2015/node_modules/gulp/node_modules/vinyl-fs/node_modules/glob-stream/index.js:68:42)
    at Gulp.src (/Users/karltaylor/Documents/web/cmp-2015/node_modules/gulp/node_modules/vinyl-fs/lib/src/index.js:33:23)
    at Gulp.<anonymous> (/Users/karltaylor/Documents/web/cmp-2015/gulpfile.js:35:7)
    at module.exports (/Users/karltaylor/Documents/web/cmp-2015/node_modules/gulp/node_modules/orchestrator/lib/runTask.js:34:7)
    at Gulp.Orchestrator._runTask (/Users/karltaylor/Documents/web/cmp-2015/node_modules/gulp/node_modules/orchestrator/index.js:273:3)
    at Gulp.Orchestrator._runStep (/Users/karltaylor/Documents/web/cmp-2015/node_modules/gulp/node_modules/orchestrator/index.js:214:10)
    at /Users/karltaylor/Documents/web/cmp-2015/node_modules/gulp/node_modules/orchestrator/index.js:279:18
    at finish (/Users/karltaylor/Documents/web/cmp-2015/node_modules/gulp/node_modules/orchestrator/lib/runTask.js:21:8)
    at module.exports (/Users/karltaylor/Documents/web/cmp-2015/node_modules/gulp/node_modules/orchestrator/lib/runTask.js:60:3)

我试过的事情:

1. 重新安装bootstrap
2. 将实际的bootstrap.css文件移动到我的css文件,但它完全相同.

编辑:已解决=要使用多个源,您必须将它们放在一个数组中.

资料来源:https://github.com/gulpjs/gulp/blob/master/docs/recipes/using-multiple-sources-in-one-task.md

Answer 1

就像@topleft提到的那样,在我的gulp.src中使用多个文件的语法错误.要使用多个源,您需要将它们放在一个数组中.

例:

var gulp = require('gulp');
var concat = require('gulp-concat');

gulp.task('default', function() {
    return gulp.src(['foo/*', 'bar/*'])
        .pipe(concat('result.txt'))
        .pipe(gulp.dest('build'));
});