esbuild#WatchMode TypeScript Examples

The following examples show how to use esbuild#WatchMode. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: cli.ts    From nota with MIT License 4 votes vote down vote up 
cli = (
  externalOptions?: CliOptions
): ((extra: BuildOptions) => Promise<[BuildResult, BuildOptions]>) => {
  let options =
    externalOptions ||
    (program
      .option("-w, --watch", "Watch for changes and rebuild")
      .option("-g, --debug", "Do not minify and include source maps")
      .option("-t, --typescript", "Run typescript")
      .parse(process.argv)
      .opts() as CliOptions);

  let pkg = getManifest();
  let keys = (map?: IDependencyMap) => Object.keys(map || {});
  let pkgExternal = keys(pkg.dependencies).concat(keys(pkg.peerDependencies));

  return async (extra: BuildOptions = {}) => {
    let plugins = extra.plugins || [];
    let format = extra.format || "esm";

    let external = (format != "iife" ? pkgExternal : []).concat(extra.external || []);

    if (format == "esm") {
      plugins.push(esmExternalsPlugin({ externals: external }));
    }

    let loader: { [ext: string]: Loader } = {
      ".otf": "file",
      ".woff": "file",
      ".woff2": "file",
      ".ttf": "file",
      ".wasm": "file",
      ".bib": "text",
      ".png": "file",
      ".jpg": "file",
      ".jpeg": "file",
      ".gif": "file",
      ...(extra.loader || {}),
    };

    let outpaths: BuildOptions = {};
    if (extra.outdir) {
      outpaths.outdir = extra.outdir;
    } else if (extra.outfile) {
      outpaths.outfile = extra.outfile;
    } else {
      extra.outdir = "dist";
    }

    let debug = options.debug || options.watch !== undefined;
    let watch: WatchMode | undefined =
      typeof options.watch === "object"
        ? options.watch
        : options.watch
        ? {
            onRebuild() {
              log.info("Rebuilt.");
            },
          }
        : undefined;

    let entryPoints = extra.entryPoints;
    if (!entryPoints) {
      entryPoints = [(await fileExists("./lib/index.ts")) ? "./lib/index.ts" : "./lib/index.tsx"];
    }

    if (options.ts || _.some(entryPoints, (p: string) => path.extname(p).startsWith(".ts"))) {
      plugins.push(tscPlugin());
    }

    let opts = {
      ...extra,
      ...outpaths,
      entryPoints,
      watch,
      external,
      plugins,
      format,
      loader,
      bundle: extra.bundle !== undefined ? extra.bundle : true,
      minify: extra.minify !== undefined ? extra.minify : !debug,
      sourcemap: extra.sourcemap !== undefined ? extra.sourcemap : debug,
    };

    let start = _.now();
    let result = await esbuild.build(opts);
    log.info(`Built in ${((_.now() - start) / 1000).toFixed(2)}s.`);
    return [result, opts];
  };
}