more changes to build scripts

- drop `build_src.js` and `build.js`
  - now we'll use rollup configs for all src building
- add `npm run build:css` and `npm run build:data`
- watcher now only watches for css file changes
  - src and data rebuilds are too slow to reasonably do "live"
- fix `build_css.js` and `build_data.js` to either exec or export

server.js

@@ -3,49 +3,14 @@ const colors = require('colors/safe');
 const gaze = require('gaze');
 const StaticServer = require('static-server');
 
-const buildAll = require('./build');
-const buildData = require('./build_data');
-const buildSrc = require('./build_src');
-const buildCSS = require('./build_css');
-
-const CSSFILES = ['css/**/*.css'];
-const SRCFILES = ['modules/**/*.js'];
-const DATAFILES = [
-  'data/**/*.{js,json}',
-  'data/core.yaml',
-  // ignore the output files of `buildData`
-  '!data/presets/categories.json',
-  '!data/presets/fields.json',
-  '!data/presets/presets.json',
-  '!data/presets.yaml',
-  '!data/taginfo.json',
-  '!data/territory-languages.json',
-  '!dist/locales/en.json'
-];
+const buildCSS = require('./build_css.js');
 
 
-buildAll()
-  .then(() => startServer());
+gaze(['css/**/*.css'], (err, watcher) => {
+  watcher.on('all', () => buildCSS());
+});
 
-
-function startServer() {
-  gaze(CSSFILES, (err, watcher) => {
-    watcher.on('all', () => buildCSS());
-  });
-
-  gaze(DATAFILES, (err, watcher) => {
-    watcher.on('all', () => {
-      buildData()
-        .then(() => buildSrc());
-    });
-  });
-
-  gaze(SRCFILES, (err, watcher) => {
-    watcher.on('all', () => buildSrc());
-  });
-
-  const server = new StaticServer({ rootPath: __dirname, port: 8080, followSymlink: true });
-  server.start(() => {
-    console.log(colors.yellow('Listening on ' + server.port));
-  });
-}
+const server = new StaticServer({ rootPath: __dirname, port: 8080, followSymlink: true });
+server.start(() => {
+  console.log(colors.yellow('Listening on ' + server.port));
+});