feat(graduated_tiered_pricing): add typescript solution

exercises/graduated_tiered_prices/solutions/adrianliz/.eslintrc.js

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+module.exports = {
+  parser: "@typescript-eslint/parser",
+  extends: [
+    "plugin:@typescript-eslint/recommended",
+    "plugin:prettier/recommended",
+  ],
+  plugins: ["eslint-plugin-html", "simple-import-sort", "import"],
+  parserOptions: {
+    ecmaVersion: 12,
+    sourceType: "module",
+  },
+  rules: {
+    // Place to specify ESLint rules. Can be used to overwrite rules specified from the extended configs
+    "simple-import-sort/imports": "error",
+    "simple-import-sort/exports": "error",
+    "import/first": "error",
+    "import/newline-after-import": "error",
+    "import/no-duplicates": "error",
+  },
+  ignorePatterns: ["webpack.*.js"],
+};

exercises/graduated_tiered_prices/solutions/adrianliz/.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Dependency directories
+node_modules/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# Build output
+dist

exercises/graduated_tiered_prices/solutions/adrianliz/LICENSE

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+MIT License
+
+Copyright (c) 2021 CodelyTV
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

exercises/graduated_tiered_prices/solutions/adrianliz/README.md

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+# Product pricing: TypeScript
+
+TypeScript codebase for the [Graduated Product pricing](../../README.md) exercise.
+
+## Setup
+
+```
+# install dependencies
+npm install
+```
+
+## Testing
+
+### Unit Testing
+
+```
+npm run test
+```
+
+### E2E Testing
+
+```
+# run in dev mode on port 8080
+npm run dev
+
+# open Cypress to run tests on dev mode
+npm run cy:open
+
+# open Cypress on CLI
+npm run cy:run
+```
+
+## Running the app
+
+```
+# install dependencies
+npm install
+
+# run in dev mode on port 8080
+npm run dev
+
+# generate production build
+npm run build
+
+# run generated content in dist folder on port 8080
+npm run start
+```
+
+## Linting
+
+```
+# run linter
+npm run lint
+
+# fix lint issues
+npm run lint:fix
+```

exercises/graduated_tiered_prices/solutions/adrianliz/babel.config.json

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+{
+  "presets": [
+    [
+      "@babel/preset-env",
+      {
+        "useBuiltIns": "usage",
+        "corejs": "3.9.1"
+      }
+    ]
+  ]
+}

exercises/graduated_tiered_prices/solutions/adrianliz/cypress.json

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+{
+  "baseUrl": "http://localhost:8080",
+  "video": false
+}

exercises/graduated_tiered_prices/solutions/adrianliz/cypress/fixtures/example.json

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+{
+  "name": "Using fixtures to represent data",
+  "email": "hello@cypress.io",
+  "body": "Fixtures are a great way to mock data for responses to routes"
+}

exercises/graduated_tiered_prices/solutions/adrianliz/cypress/integration/home.spec.ts

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+describe("The Home Page", () => {
+  it("successfully loads", () => {
+    cy.visit("/");
+    cy.findByRole("heading", { name: /product pricing/i }).should("exist");
+  });
+});

exercises/graduated_tiered_prices/solutions/adrianliz/cypress/plugins/index.js

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+/// <reference types="cypress" />
+// ***********************************************************
+// This example plugins/index.js can be used to load plugins
+//
+// You can change the location of this file or turn off loading
+// the plugins file with the 'pluginsFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/plugins-guide
+// ***********************************************************
+
+// This function is called when a project is opened or re-opened (e.g. due to
+// the project's config changing)
+
+/**
+ * @type {Cypress.PluginConfig}
+ */
+// eslint-disable-next-line no-unused-vars
+module.exports = (on, config) => {
+  // `on` is used to hook into various events Cypress emits
+  // `config` is the resolved Cypress config
+}

exercises/graduated_tiered_prices/solutions/adrianliz/cypress/support/commands.js

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+// ***********************************************
+// This example commands.js shows you how to
+// create various custom commands and overwrite
+// existing commands.
+//
+// For more comprehensive examples of custom
+// commands please read more here:
+// https://on.cypress.io/custom-commands
+// ***********************************************
+//
+//
+// -- This is a parent command --
+// Cypress.Commands.add('login', (email, password) => { ... })
+//
+//
+// -- This is a child command --
+// Cypress.Commands.add('drag', { prevSubject: 'element'}, (subject, options) => { ... })
+//
+//
+// -- This is a dual command --
+// Cypress.Commands.add('dismiss', { prevSubject: 'optional'}, (subject, options) => { ... })
+//
+//
+// -- This will overwrite an existing command --
+// Cypress.Commands.overwrite('visit', (originalFn, url, options) => { ... })
+
+import "@testing-library/cypress/add-commands";

exercises/graduated_tiered_prices/solutions/adrianliz/cypress/support/index.js

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+// ***********************************************************
+// This example support/index.js is processed and
+// loaded automatically before your test files.
+//
+// This is a great place to put global configuration and
+// behavior that modifies Cypress.
+//
+// You can change the location of this file or turn off
+// automatically serving support files with the
+// 'supportFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/configuration
+// ***********************************************************
+
+// Import commands.js using ES2015 syntax:
+import './commands'
+
+// Alternatively you can use CommonJS syntax:
+// require('./commands')

exercises/graduated_tiered_prices/solutions/adrianliz/cypress/tsconfig.json

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+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "noEmit": true,
+    "types": ["cypress", "@testing-library/cypress"]
+  },
+  "include": ["../node_modules/cypress", "./**/*.ts"]
+}

exercises/graduated_tiered_prices/solutions/adrianliz/index.html

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+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Document</title>
+  </head>
+  <body>
+    <h1>Product pricing</h1>
+  </body>
+</html>

exercises/graduated_tiered_prices/solutions/adrianliz/jest.config.js

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+module.exports = {
+  testMatch: ["**/tests/*.(spec|test).ts"],
+  transform: {
+    "\\.[jt]sx?$": "ts-jest",
+  },
+  moduleNameMapper: {
+    "\\.(css|less)$": "identity-obj-proxy",
+  },
+  testEnvironment: "jsdom",
+};