gulpfile.ts

import {Gulpclass, MergedTask, SequenceTask, Task} from "gulpclass";

const gulp = require("gulp");
const del = require("del");
const ts = require("gulp-typescript");
const sourcemaps = require("gulp-sourcemaps");

@Gulpclass()
export class Gulpfile {

    // -------------------------------------------------------------------------
    // General tasks
    // -------------------------------------------------------------------------

    /**
     * Cleans build folder.
     */
    @Task()
    clean(cb: Function) {
        return del([
            "build/**"
        ], cb);
    }

    // -------------------------------------------------------------------------
    // Packaging and Publishing tasks
    // -------------------------------------------------------------------------

    /**
     * Copies all sources to the package directory.
     */
    @MergedTask()
    packageCompile() {
        const tsProject = ts.createProject("tsconfig.json");
        const tsResult = gulp.src(["./src/**/*.ts", "./typings/**/*.ts"])
            .pipe(sourcemaps.init())
            .pipe(tsProject());

        return [
            tsResult.dts.pipe(gulp.dest("./build/package")),
            tsResult.js
                .pipe(sourcemaps.write(".", { sourceRoot: "", includeContent: true }))
                .pipe(gulp.dest("./build/package"))
        ];
    }

    /**
     * Moves all compiled files to the final package directory.
     */
    @Task()
    packageMoveCompiledFiles() {
        return gulp.src("./build/package/src/**/*")
            .pipe(gulp.dest("./build/package"));
    }

    /**
     * Moves all compiled files to the final package directory.
     */
    @Task()
    packageClearCompileDirectory(cb: Function) {
        return del([
            "./build/package/src/**"
        ], cb);
    }

    /**
     * Change the "private" state of the packaged package.json file to public.
     */
    @Task()
    packagePreparePackageFile() {
        return gulp.src("./package.json")
            .pipe(gulp.dest("./build/package"));
    }

    /**
     * Creates a package that can be published to npm.
     */
    @SequenceTask()
    package() {
        return [
            "clean",
            "packageCompile",
            "packageMoveCompiledFiles",
            "packageClearCompileDirectory",
            "packagePreparePackageFile"
        ];
    }

}