在LESS文件中出现错误后观察Gulp.js停止编译LESS [英] Gulp.js stops compiling LESS when watched after there has been an error in the LESS files
问题描述
我遇到 gulp
的问题。我运行 gulp-watch
以及 gulp-less
和 gulp-clean
。一切都运行完美。
当我编辑 somefile.less
时,我用分号丢失或也许我不小心留下了一个尾随的; s
,在保存时我的代码中只有错误, gulp-less
记录错误在控制台。在我修复它之后 gulp-watch
继续观看文件,但是 gulp-less
不会触发,编译。当我停止 gulp
并在终端中再次运行时,一切都恢复正常。
这是我的 gulpfile.js
:
var gulp = require('gulp');
var clean = require('gulp-clean');
var gutil = require('gulp-util');
var less = require('gulp-less');
var watch = require('gulp-watch');
var path = require('path');
$ b $ gulp.task('clean',function(){
return gulp.src('src / main / webapp / styles / build',{read:false})
。(干净()。on('error',gutil.log))
});
$ b gulp.task('less',function(){
return gulp.src(['src / main / webapp / styles / main.less'],{base:'src / main / webapp / styles /'})
.pipe(less()。on('error',gutil.log))
.pipe(gulp.dest('src / main / webapp / styles / build'))
.on('error',gutil.log);
});
$ b $ gulp.task('watch',function(){
watch('src / main / webapp / styles / ** / *。{less,css}',function() {
gulp.start('less')
.on('error',gutil.log);
})
});
gulp.task('default',['clean'],function(){
gulp.start(['less','watch'])
.on ('error',gutil.log);
});
以下是我的 devDependencies
:
devDependencies:{
gulp:^ 3.8.10,
gulp-clean :^ 0.3.1,
gulp-less:^ 2.0.1,
gulp-util:^ 3.0.2,
gulp- watch:^ 3.0.0
}
最后,这里是控制台:
[10:21:03] imports / productSearchPage.less was changed
[10:21: 03]开始'少'...
[10:21:03] {[错误:无法识别的输入。可能缺少文件/src/main/webapp/styles/imports/productSearchPage.less行号。 1008]
类型:'Parse',
文件名:'/src/main/webapp/styles/imports/productSearchPage.less',
索引:19127,
行:1008 ,
callLine:NaN,
callExtract:undefined,
column:0,
extract:['','',undefined],
message:'无法识别的输入。可能缺少文件/src/main/webapp/styles/imports/productSearchPage.less行号。 1008',
stack:undefined,
lineNumber:1008,
fileName:'/src/main/webapp/styles/imports/productSearchPage.less',
name:'Error ',
showStack:false,
showProperties:true,
插件:'gulp-less',
__safety:{toString:[Function]}}
[10 :21:04] imports / productSearchPage.less was changed
[10:21:08] imports / productSearchPage.less was changed
^ C
你可以告诉我 gulp-watch
任务有什么问题,并帮助我运行 gulp-less
,但不会重新启动 gulp
。
编辑:
我编辑过的 gulp-less
任务
gulp.task('less',function(){
return gulp.src(['src / main / webapp / styles / main.less'],{base:'src / main / webapp / styles /'})
.pipe(less()。on('error',gutil.log))
.pipe(gulp.dest('src / main / webapp / styles / build'))
.on('error',function(err){
gutil.log(err);
this.emit('end');
});
});
现在可以使用!这是我最后的工作, gulp-less
任务:
gulp.task('less',function(){
return gulp.src(['src / main / webapp / styles / main.less'],{base:'src / main / webapp / styles /' }'
.pipe(less()。on('error',function(err){
gutil.log(err);
this.emit('end');
$ b .pipe(gulp.dest('src / main / webapp / styles / build'))
});
问题在于,当 LESS
该任务仍然继续并构建目标文件。最重要的是,我将错误记录函数和
发出('end')
作为回调给 gulp.dest
$ b 现在,当 less()
的回调是错误日志并且 emit('end')
一切正常。
I'm having a problem with gulp
. I run gulp-watch
along with gulp-less
and gulp-clean
. Everything is running perfectly.
When I edit somefile.less
and I save it with a semi-colon missing or maybe I accidentally leave a trailing ;s
, just have errors in my code when saving, gulp-less
logs an error in the console. After I fix it gulp-watch
continues watching the files, but gulp-less
doesn't fire and it doesn't compile. When I stop gulp
and run it again in the terminal everything goes back to normal.
Here is my gulpfile.js
:
var gulp = require('gulp');
var clean = require('gulp-clean');
var gutil = require('gulp-util');
var less = require('gulp-less');
var watch = require('gulp-watch');
var path = require('path');
gulp.task('clean', function() {
return gulp.src('src/main/webapp/styles/build', {read: false})
.pipe(clean().on('error', gutil.log))
});
gulp.task('less', function() {
return gulp.src(['src/main/webapp/styles/main.less'], {base: 'src/main/webapp/styles/'})
.pipe(less().on('error', gutil.log))
.pipe(gulp.dest('src/main/webapp/styles/build'))
.on('error', gutil.log);
});
gulp.task('watch', function() {
watch('src/main/webapp/styles/**/*.{less, css}', function() {
gulp.start('less')
.on('error', gutil.log);
})
});
gulp.task('default', ['clean'], function() {
gulp.start(['less', 'watch'])
.on('error', gutil.log);
});
And here are my devDependencies
:
"devDependencies": {
"gulp": "^3.8.10",
"gulp-clean": "^0.3.1",
"gulp-less": "^2.0.1",
"gulp-util": "^3.0.2",
"gulp-watch": "^3.0.0"
}
Finally, here is the message in the console:
[10:21:03] imports/productSearchPage.less was changed
[10:21:03] Starting 'less'...
[10:21:03] { [Error: Unrecognised input. Possibly missing something in file /src/main/webapp/styles/imports/productSearchPage.less line no. 1008]
type: 'Parse',
filename: '/src/main/webapp/styles/imports/productSearchPage.less',
index: 19127,
line: 1008,
callLine: NaN,
callExtract: undefined,
column: 0,
extract: [ '', '', undefined ],
message: 'Unrecognised input. Possibly missing something in file /src/main/webapp/styles/imports/productSearchPage.less line no. 1008',
stack: undefined,
lineNumber: 1008,
fileName: '/src/main/webapp/styles/imports/productSearchPage.less',
name: 'Error',
showStack: false,
showProperties: true,
plugin: 'gulp-less',
__safety: { toString: [Function] } }
[10:21:04] imports/productSearchPage.less was changed
[10:21:08] imports/productSearchPage.less was changed
^C
Can you please tell me what is wrong with the gulp-watch
task and help me make it run gulp-less
after the errors have been removed, without restarting gulp
.
EDIT:
My edited gulp-less
task
gulp.task('less', function() {
return gulp.src(['src/main/webapp/styles/main.less'], {base: 'src/main/webapp/styles/'})
.pipe(less().on('error', gutil.log))
.pipe(gulp.dest('src/main/webapp/styles/build'))
.on('error', function(err) {
gutil.log(err);
this.emit('end');
});
});
It works now! Here is my final, and working, gulp-less
task:
gulp.task('less', function() {
return gulp.src(['src/main/webapp/styles/main.less'], {base: 'src/main/webapp/styles/'})
.pipe(less().on('error', function(err){
gutil.log(err);
this.emit('end');
}))
.pipe(gulp.dest('src/main/webapp/styles/build'))
});
The problem was that, when there was an error in the LESS
the task still went on and built the destination file. On top of that I placed the error logging function and the emit('end')
as a callback to gulp.dest
.
Now, when the callback of less()
is the error log and emit('end')
everything works perfectly.
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