tasks/javascript.js
/* eslint-disable arrow-body-style */
const { dest, src } = require("gulp");
const buffer = require("vinyl-buffer");
const browserify = require("browserify");
const childProcess = require("child_process");
const rename = require("gulp-rename");
const source = require("vinyl-source-stream");
const sourcemaps = require("gulp-sourcemaps");
const uglify = require("gulp-uglify");
const merge = require("merge-stream");
const dutil = require("./utils/doc-util");
module.exports = {
compileJS() {
dutil.logMessage("javascript", "Compiling JavaScript");
let packageName = dutil.pkg.name.replace("@uswds/", "");
const streams = Object.entries({
[packageName]: browserify({
entries: ["packages/uswds-core/src/js/start.js"],
debug: true,
})
.transform("babelify", {
global: true,
presets: ["@babel/preset-env"],
})
.bundle()
.pipe(source(`${packageName}.js`))
.pipe(buffer()),
"uswds-init": src("packages/uswds-core/src/js/uswds-init.js"),
}).map(([basename, stream]) =>
stream
.pipe(rename({ basename }))
.pipe(dest("dist/js"))
.pipe(sourcemaps.init({ loadMaps: true }))
.on("error", function handleError(error) {
dutil.logError(error);
this.emit('end');
})
.pipe(uglify())
.pipe(
rename({
suffix: ".min",
})
)
.pipe(sourcemaps.write("."))
.pipe(dest("dist/js"))
);
return merge(streams);
},
typeCheck() {
return new Promise((resolve, reject) => {
childProcess
.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!"));
}
});
});
},
};