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javascript.js
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javascript.js
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var child_process = require('child_process');
var gulp = require('gulp');
var gutil = require('gulp-util');
var dutil = require('./doc-util');
var browserify = require('browserify');
var buffer = require('vinyl-buffer');
var source = require('vinyl-source-stream');
var uglify = require('gulp-uglify');
var sourcemaps = require('gulp-sourcemaps');
var rename = require('gulp-rename');
var eslint = require('gulp-eslint');
var task = 'javascript';
gulp.task(task, function (done) {
dutil.logMessage(task, 'Compiling JavaScript');
var defaultStream = browserify({
entries: 'src/js/start.js',
debug: true,
})
.transform('babelify', {
global: true,
presets: ['es2015'],
});
var stream = defaultStream.bundle()
.pipe(source('uswds.js')) // XXX why is this necessary?
.pipe(buffer())
.pipe(rename({ basename: dutil.pkg.name }))
.pipe(gulp.dest('dist/js'));
stream
.pipe(sourcemaps.init({ loadMaps: true }));
if (process.env.NODE_ENV !== 'development') {
stream.pipe(uglify());
}
stream.on('error', gutil.log)
.pipe(rename({
suffix: '.min',
}))
.pipe(sourcemaps.write('.'))
.pipe(gulp.dest('dist/js'));
return stream;
});
gulp.task('typecheck', function () {
return new Promise((resolve, reject) => {
child_process.spawn(
'./node_modules/.bin/tsc',
{ stdio: 'inherit' }
)
.on('error', reject)
.on('exit', code => {
if (code === 0) {
dutil.logMessage('typecheck', 'TypeScript likes our code!');
resolve();
} else {
reject(new Error('TypeScript failed, see output for details!'));
}
});
});
});
gulp.task('eslint', function (done) {
if (!cFlags.test) {
dutil.logMessage('eslint', 'Skipping linting of JavaScript files.');
return done();
}
return gulp.src([
'src/js/**/*.js',
'spec/**/*.js'
])
.pipe(eslint({
fix: true,
}))
.pipe(eslint.format())
.pipe(eslint.failAfterError());
});