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.gitignore

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+# package directories
+node_modules
+jspm_packages
+
+# Serverless directories
+.serverless
+
+# Webpack directories
+.webpack

handler.ts

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+import { APIGatewayProxyHandler } from "aws-lambda";
+import axios from "axios";
+import "source-map-support/register";
+import { JSDOM } from "jsdom";
+
+export const promiseList: APIGatewayProxyHandler = async (_, _context) => {
+  const page = await axios({
+    url: "https://tracciailgoverno.pagellapolitica.it/it/promesse/",
+    responseType: "document"
+  });
+  const { window } = new JSDOM(page.data);
+  const promises = window.document.querySelectorAll(".promise");
+  const promiseList = Array.prototype.slice.call(promises, 0);
+  return {
+    statusCode: 200,
+    body: JSON.stringify(
+      promiseList.map(
+        prom => ({
+          name: prom.querySelector("h2.heading span").innerHTML,
+          url: prom.querySelector("a[href]").href,
+          status: prom.querySelector(".promise-status-text").innerHTML
+        }),
+        null,
+        2
+      )
+    )
+  };
+};

package.json

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+{
+  "name": "promessegoverno",
+  "version": "1.0.0",
+  "description": "Serverless webpack example using Typescript",
+  "main": "handler.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "dependencies": {
+    "axios": "^0.19.0",
+    "jsdom": "^15.1.1",
+    "source-map-support": "^0.5.10"
+  },
+  "devDependencies": {
+    "@types/aws-lambda": "^8.10.17",
+    "@types/jsdom": "^12.2.4",
+    "@types/node": "^10.12.18",
+    "serverless-webpack": "^5.2.0",
+    "ts-loader": "^5.3.3",
+    "typescript": "^3.2.4",
+    "webpack": "^4.29.0"
+  },
+  "author": "The serverless webpack authors (https://github.com/elastic-coders/serverless-webpack)",
+  "license": "MIT"
+}

serverless.yml

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+service:
+  name: promessegoverno
+app: promessegoverno-app
+org: hamcha
+
+# Add the serverless-webpack plugin
+plugins:
+  - serverless-webpack
+
+provider:
+  name: aws
+  runtime: nodejs10.x
+
+functions:
+  promiseList:
+    handler: handler.promiseList
+    events:
+      - http:
+          method: get
+          path: promiseList

tsconfig.json

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+{
+  "compilerOptions": {
+    "lib": ["es2017"],
+    "moduleResolution": "node",
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "sourceMap": true,
+    "target": "es2017",
+    "outDir": "lib"
+  },
+  "exclude": ["node_modules"]
+}

webpack.config.js

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+const path = require("path");
+const slsw = require("serverless-webpack");
+const webpack = require("webpack");
+
+module.exports = {
+  mode: slsw.lib.webpack.isLocal ? "development" : "production",
+  entry: slsw.lib.entries,
+  devtool: "source-map",
+  resolve: {
+    extensions: [".js", ".jsx", ".json", ".ts", ".tsx"]
+  },
+  output: {
+    libraryTarget: "commonjs",
+    path: path.join(__dirname, ".webpack"),
+    filename: "[name].js"
+  },
+  target: "node",
+  module: {
+    rules: [
+      // all files with a `.ts` or `.tsx` extension will be handled by `ts-loader`
+      { test: /\.tsx?$/, loader: "ts-loader" }
+    ]
+  },
+  plugins: [new webpack.IgnorePlugin(/canvas$/)]
+};