如何让sourcemap包含我所有的LESS文件与gump

Question

我的/liss文件夹中有两个LESS文件：

main.less：

@import 'vars';
body{
  background-color: @blau;
}

和无变量

@blau : #6621ab;

我的吞咽任务使用无吞咽和吞咽源地图

gulp.task('less', function () {
  gulp.src('./less/main.less')
    .pipe(sourcemaps.init())
    .pipe(less())
    .pipe(sourcemaps.write())
    .pipe(gulp.dest('./public/'))
});

CSS生成（位于/public/main.CSS）运行良好，但在sourcemap中，我只能看到main.less，而不能看到vars.less。知道吗？提前感谢

Answer 1

据我所知，您的配置生成以下源映射代码：

/*# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbIm1haW4ubGVzcyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiQUFFQTtFQUNFLHlCQUFBIiwiZmlsZSI6Im1haW4uY3NzIiwic291cmNlc0NvbnRlbnQiOlsiQGltcG9ydCAndmFycyc7XG5cbmJvZHl7XG4gIGJhY2tncm91bmQtY29sb3I6IEBibGF1O1xufVxuIl0sInNvdXJjZVJvb3QiOiIvc291cmNlLyJ9 */

编码版本：

{"version":3,"sources":["main.less"],"names":[],"mappings":"AAEA;EACE,yBAAA","file":"main.css","sourcesContent":["@import 'vars';nnbody{n  background-color: @blau;n}n"],"sourceRoot":"/source/"}

vars.less不会向CSS生成任何输出，因此不应包含在源映射中。

一旦vars.less生成输出，例如在该文件的末尾添加.selector {p:1;}，该文件也将包含在源映射中：

{"version":3,"sources":["vars.less","main.less"],"names":[],"mappings":"AACA;EAAW,IAAA;;ACCX;EACE,yBAAA","file":"main.css","sourcesContent":["@blau : #6621ab;n.selector {p:1;}n","@import 'vars';nnbody{n  background-color: @blau;n}n"],"sourceRoot":"/source/"}

请注意，lessc编译器对源映射有不同的选项：

  --source-map[=FILENAME]  Outputs a v3 sourcemap to the filename (or output filename.map)
  --source-map-rootpath=X  adds this path onto the sourcemap filename and less file paths
  --source-map-basepath=X  Sets sourcemap base path, defaults to current working directory.
  --source-map-less-inline puts the less files into the map instead of referencing them
  --source-map-map-inline  puts the map (and any less files) into the output css file
  --source-map-url=URL     the complete url and filename put in the less file

gump源映射输出与使用--source-map-less-inline和--source-map-map-inline选项编译相同的结果