gulpfile.js

var gulp = require("gulp");
var ts = require('gulp-typescript');
var sourcemaps = require('gulp-sourcemaps');
var tslint = require("gulp-tslint");
var minify = require('gulp-minify');
var git = require('gulp-git');
var versionBump = require('gulp-bump')
var tagVersion = require('gulp-tag-version');
var webpack = require('webpack-stream');

gulp.task("build_ES5", function() {
    return gulp.src([
            "src/**/*.ts",
            "Speech.Browser.Sdk.ts"],
            {base: '.'})
        .pipe(tslint({
      formatter: "prose",
            configuration: "tslint.json"
    }))
    .pipe(tslint.report({
            summarizeFailureOutput: true
        }))
        .pipe(sourcemaps.init())
        .pipe(ts({
            target: "ES5",
            declaration: true,
            noImplicitAny: true,
            removeComments: false,
            outDir: 'distrib'
        }))
        .pipe(sourcemaps.write('.'))
        .pipe(gulp.dest('distrib'));
});


gulp.task("build", gulp.series("build_ES5"));

gulp.task("bundle", gulp.series("build_ES5", function () {
    return gulp.src('samples/browser/sample_app.js')
    .pipe(webpack({
        output: {filename: 'speech.sdk.bundle.js'},
        devtool: 'source-map',
        module:  {
            rules: [{
                   enforce: 'pre',
                   test: /\.js$/,
                   loader: "source-map-loader"
            }]
        }
    }))
    .pipe(gulp.dest('distrib'));
}));


// We don't want to release anything without a successful build. So build task is dependency for these tasks.
gulp.task('patchRelease', gulp.series('build', function() { return BumpVersionTagAndCommit('patch'); }))
gulp.task('featureRelease', gulp.series('build', function() { return BumpVersionTagAndCommit('minor'); }))
gulp.task('majorRelease', gulp.series('build', function() { return BumpVersionTagAndCommit('major'); }))
gulp.task('preRelease', gulp.series('build', function() { return BumpVersionTagAndCommit('prerelease'); }))

function BumpVersionTagAndCommit(versionType) {
  return gulp.src(['./package.json'])
        // bump the version number
        .pipe(versionBump({type:versionType}))
        // save it back to filesystem 
        .pipe(gulp.dest('./'))
        // commit the changed version number 
        .pipe(git.commit('Bumping package version'))
        // tag it in the repository
    .pipe(tagVersion());
}