前端打包报错:AssertionError [ERR_ASSERTION]: Task function must be specified
报错如下:AssertionError [ERR_ASSERTION]: Task function must be specifiedat Gulp.set [as _setTask] (D:\dev\X-Blog\renren-fast-vue\node_modules\_undertaker@1.3.0@undertaker\lib\set-task.js:10:3)at Gulp.task
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报错如下:
AssertionError [ERR_ASSERTION]: Task function must be specified
at Gulp.set [as _setTask] (D:\dev\X-Blog\renren-fast-vue\node_modules\_undertaker@1.3.0@undertaker\lib\set-task.js:10:3)
at Gulp.task (D:\dev\X-Blog\renren-fast-vue\node_modules\_undertaker@1.3.0@undertaker\lib\task.js:13:8)
at Object.<anonymous> (D:\dev\X-Blog\renren-fast-vue\gulpfile.js:27:6)
at Module._compile (internal/modules/cjs/loader.js:1138:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1158:10)
at Module.load (internal/modules/cjs/loader.js:986:32)
at Function.Module._load (internal/modules/cjs/loader.js:879:14)
at Module.require (internal/modules/cjs/loader.js:1026:19)
at require (internal/modules/cjs/helpers.js:72:18)
at requireOrImport (D:\dev\X-Blog\renren-fast-vue\node_modules\_gulp-cli@2.3.0@gulp-cli\lib\shared\require-or-import.js:19:11) {
generatedMessage: false,
code: 'ERR_ASSERTION',
actual: false,
expected: true,
operator: '=='
}
由于gulp版本不一致导致的,原代码使用v3版本,现升级node:v12和gulp:v4,由于gulp语法不一致导致该错误。
解决办法:根据错误找到目标文件的第27行,原来代码:
// 创建版本号目录
gulp.task('create:versionCatalog', ['build'], function () {
return gulp.src(`${distPath}/static/**/*`)
.pipe(gulp.dest(`${versionPath}/static/`))
});
修改之后:
// 创建版本号目录
gulp.task('create:versionCatalog', gulp.series('build'), function () {
return gulp.src(`${distPath}/static/**/*`)
.pipe(gulp.dest(`${versionPath}/static/`))
});
注:
Gulp 4中需要使用 gulp.series(顺序执行)和gulp.paralle(并行计算),因为gulp任务现在只有两个参数,第二个参数必须为函数。所以将数组改为顺序执行函数
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