test: migrate to Jest (#77)

BREAKING CHANGE: Drop support for Node 8

.eslintignore

@@ -1,3 +1,4 @@
-node_modules
-coverage
-dist
+/node_modules
+/coverage
+/dist
+/test/fixtures

.eslintrc.json

@@ -0,0 +1,11 @@
+{
+	"root": true,
+	"extends": ["xo", "xo-typescript", "prettier", "prettier/@typescript-eslint"],
+	"rules": {
+		"capitalized-comments": 0,
+		"@typescript-eslint/no-floating-promises": 0,
+		"@typescript-eslint/no-var-requires": 0,
+		"@typescript-eslint/no-implicit-any-catch": 0,
+		"@typescript-eslint/promise-function-async": 0
+	}
+}

.github/workflows/ci.yml

@@ -2,17 +2,15 @@ name: CI
 
 on:
   push:
-    branches: [master]
   pull_request:
-    branches: [master]
 
 jobs:
   test:
     runs-on: ubuntu-latest
 
     strategy:
       matrix:
-        node-version: [8.x, 10.x, 12.x]
+        node-version: [10.x, 12.x]
 
     steps:
       - uses: actions/checkout@v2
@@ -22,8 +20,16 @@ jobs:
         with:
           node-version: ${{ matrix.node-version }}
 
+      - uses: actions/cache@v2
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-${{ matrix.node-version }}
       - run: npm i -g bower
       - run: npm ci
+      - run: npm run static
       - run: npm test
-      - run: npm run coveralls
+      - uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ github.token }}
+      - run: npm run build
 

.prettierignore

@@ -0,0 +1,4 @@
+/node_modules
+/coverage
+/dist
+/test/fixtures

README.md

@@ -2,7 +2,7 @@
 
 [NodeCG](https://github.com/nodecg/nodecg)'s command line interface.
 
-[![Build Status](https://travis-ci.org/nodecg/nodecg-cli.svg?branch=master)](https://travis-ci.org/nodecg/nodecg-cli)
+![CI](https://github.com/nodecg/nodecg-cli/workflows/CI/badge.svg?branch=master)
 [![Coverage Status](https://coveralls.io/repos/github/nodecg/nodecg-cli/badge.svg?branch=master)](https://coveralls.io/github/nodecg/nodecg-cli?branch=master)
 
 ## Installation

jest.config.js

@@ -0,0 +1,4 @@
+module.exports = {
+	preset: 'ts-jest',
+	testEnvironment: 'node'
+};