feat: Add react package (#4)

* chore: Organise

* feat: Add `react` package

* refactor: Remove unneeded char

packages/js/bin/build-icons-object.js

@@ -0,0 +1,35 @@
+import path from 'path';
+import cheerio from 'cheerio';
+import { minify } from 'html-minifier';
+
+/**
+ * Build an object in the format: `{ <name>: <contents> }`.
+ * @param {string[]} svgFiles - A list of filenames.
+ * @param {Function} getSvg - A function that returns the contents of an SVG file given a filename.
+ * @returns {Object}
+ */
+function buildIconsObject(svgFiles, getSvg) {
+  return svgFiles
+    .map(svgFile => {
+      const name = path.basename(svgFile, '.svg');
+      const svg = getSvg(svgFile);
+      const contents = getSvgContents(svg);
+      return { name, contents };
+    })
+    .reduce((icons, icon) => {
+      icons[icon.name] = icon.contents;
+      return icons;
+    }, {});
+}
+
+/**
+ * Get contents between opening and closing `<svg>` tags.
+ * @param {string} svg
+ * @returns {string}
+ */
+function getSvgContents(svg) {
+  const $ = cheerio.load(svg);
+  return minify($('svg').html(), { collapseWhitespace: true });
+}
+
+export default buildIconsObject;