feat: upgrade dependencies

BREAKING CHANGE: require node v8+

.babelrc

@@ -1,9 +1,12 @@
 {
   "presets": [
-    ["env", {
-      "targets": {
-        "node": "6"
+    [
+      "@babel/preset-env",
+      {
+        "targets": {
+          "node": "8"
+        }
       }
-    }]
+    ]
   ]
 }

.prettierignore

@@ -0,0 +1,4 @@
+node_modules/
+/lib/
+package.json
+CHANGELOG.md

.prettierrc

@@ -0,0 +1,5 @@
+{
+  "singleQuote": true,
+  "trailingComma": "all",
+  "semi": false
+}

package.json

@@ -7,16 +7,22 @@
     "smooth-code": "./bin/smooth-code"
   },
   "scripts": {
-    "prepublish": "npm run build",
-    "build": "babel -d lib src"
+    "prepublishOnly": "npm run build",
+    "format": "prettier --write \"**/*.{js,md,mdx}\"",
+    "build": "babel -d lib src",
+    "release": "standard-version && conventional-github-releaser --preset angular"
   },
   "devDependencies": {
-    "babel-cli": "^6.24.1",
-    "babel-preset-env": "^1.6.0"
+    "@babel/cli": "^7.5.5",
+    "@babel/core": "^7.5.5",
+    "@babel/preset-env": "^7.5.5",
+    "conventional-github-releaser": "^3.1.3",
+    "prettier": "^1.18.2",
+    "standard-version": "^7.0.0"
   },
   "dependencies": {
-    "commander": "^2.11.0",
-    "mz": "^2.6.0",
-    "opn": "^5.1.0"
+    "commander": "^3.0.0",
+    "mz": "^2.7.0",
+    "open": "^6.4.0"
   }
 }

src/commands/solution.js

@@ -1,5 +1,5 @@
 import { exec } from 'mz/child_process'
-import opn from 'opn'
+import open from 'open'
 
 async function getProjectUrl() {
   const remoteStr = String(await exec('git remote -v'))
@@ -13,7 +13,7 @@ export default program =>
     .description('Get the solution of an exercise')
     .action(async (exercise, options) => {
       const projectUrl = await getProjectUrl()
-      opn(
+      open(
         `${projectUrl}/compare/start-exercise-${exercise}...end-exercise-${exercise}`,
         { wait: false },
       )

src/commands/tag.js

@@ -16,7 +16,10 @@ export default program =>
     .description('Tag all exercises [only for trainer]')
     .action(async () => {
       const logs = String(await exec('git log --pretty=oneline'))
-      const commits = logs.split('\n').map(parseLogLine).filter(x => x)
+      const commits = logs
+        .split('\n')
+        .map(parseLogLine)
+        .filter(x => x)
       console.log(`${commits.length} valid commits detected`)
       for (const commit of commits) {
         await exec(`git tag -f end-exercise-${commit.exercise} ${commit.hash} `)

src/index.js

@@ -1,5 +1,4 @@
 import program from 'commander'
-import { exec } from 'mz/child_process'
 import pkg from '../package.json'
 import tag from './commands/tag'
 import start from './commands/start'