initial commit, build is not working

src/app.ts

@@ -0,0 +1,42 @@
+import { createWriteStream, WriteStream } from 'fs';
+import { join } from 'path';
+
+import { MainConfig, SVGOConfig } from './config';
+import { svgClean } from './modules/svgo.clean';
+import { makeConfig } from './modules/svgo.config';
+
+const SVGO = require('svgo');
+
+export class SvgIconset {
+
+  private optimizeConfig: SVGOConfig;
+  private isValid: boolean = true;
+  private svgoPlugin: typeof SVGO;
+
+  constructor(private config: MainConfig) {
+    if (config.result === undefined || config.source === undefined) {
+      this.isValid = false;
+    }
+    this.optimizeConfig = config.optimize !== undefined ? makeConfig(config.optimize) : makeConfig();
+    this.svgoPlugin = new SVGO(this.optimizeConfig);
+
+  }
+
+  public createSet() {
+    if (!this.isValid) {
+      return console.error('Configuration is not valid, check source or result are available');
+    }
+
+    svgClean(this.config.source, this.svgoPlugin)
+      .then(files => {
+        createWriteStream(join(process.cwd(), this.config.source, `${this.config.result}-iconset.svg`))
+          .once('open', function (this: WriteStream) {
+            this.write(`<svg>${files}</svg>`);
+          })
+          .on('close', () => console.log(`Succesfully written file ${this.config.result}-iconset.svg`))
+          .on('error', () => console.error('Something’s wrong try again'));
+      })
+      .catch(err => console.error(err));
+  }
+
+}