吞咽Gulp If.如何调用几个插件

Gulp. Gulp-If. How to call several plug-ins?

本文关键字:插件 几个 调用 Gulp If 何调用 吞咽      更新时间:2023-09-26

请告诉我如何实现对css的几个插件的调用。

gulp.task("useref", function() {
    return gulp.src("src/*.html")
        .pipe(useref())
        .pipe(gulpIf("*.js", uglify()))
        .pipe(gulpIf("*.css", combineMq(), cssnano())) // This does not work
        .pipe(gulp.dest("build"));
});

错误:

$ gulp useref
[20:21:12] Using gulpfile ~'Desktop'Gulp'gulpfile.js
[20:21:12] Starting 'useref'...
events.js:154
      throw er; // Unhandled 'error' event
      ^
 Error: D:'Users'Dmitry'Desktop'Gulp'index.html:1:1: Unknown word
<!DOCTYPE html>
^
<html lang="en">

您可以使用lazypipe:

var lazypipe = require('lazypipe');
gulp.task("useref", function() {
  var cssPipeline = lazypipe()
    .pipe(cssnano)
    .pipe(combineMq, {
      beautify: false
    });
  return gulp.src("src/*.html")
    .pipe(useref())
    .pipe(gulpIf("*.js", uglify()))
    .pipe(gulpIf("*.css", cssPipeline()))
    .pipe(gulp.dest("build"));
});