gulp 3升级到gulp 4任务未完成:prod,compile

我正在将Gulp从3版升级到4版。我在这件事上犯了一个错误 task did not complete .在gulp版本4的编译任务中,有什么需要更改的吗?我认为添加一个 async 到异步吞咽。系列“清洁”任务。

安慰

[09:33:16] Using gulpfile C:\WebProjects\ITF\ITF.Web\Gulpfile.js
[09:33:16] Starting 'prod'...
[09:33:16] Starting 'compile'...
[09:33:16] The following tasks did not complete: prod, compile
[09:33:16] Did you forget to signal async completion?
Process terminated with code 1.

吞咽

    gulp.task("prod", gulp.series(
            "compile",
            "bundle",
            "min",
    ));
    
    gulp.task('clean', function () {
        return gulp.src(paths.dist, { read: false }).pipe(rimraf({ force: true }));
});

    gulp.task("compile", () => gulp.series("clean", function () {
        return gulp.src("./App/**/*.ts")
            .pipe(inlineNg2Template({
                base: "/",                  // Angular2 application base folder
                target: "es6",              // Can swap to es5
                indent: 2,                  // Indentation (spaces)
                useRelativePaths: false,     // Use components relative assset paths
                removeLineBreaks: false,     // Content will be included as one line
                templateExtension: ".html", // Update according to your file extension
                templateFunction: false    // If using a function instead of a string for `templateUrl`, pass a reference to that function here
            }))
            .pipe(typescript(tsProject))
            .pipe(ignore("References.js"))
            .pipe(gulp.dest("dist/App"))
            .on("finish", function () {
                console.log("Results finish");
                console.log(gulp.src);
            })
            .on('error', function (err) { console.log(err.message); });
    }));