feat: add MVP

src/services/github.js

@@ -0,0 +1,22 @@
+const fetch = require('isomorphic-unfetch')
+
+async function getGitHubAvailability(name) {
+  const githubURL = 'https://github.com'
+  const response = await fetch(`${githubURL}/${encodeURIComponent(name)}`)
+  return response.status === 404
+}
+
+module.exports = async (req, res) => {
+  const name = req.query.name
+
+  if (!name) {
+    return res.status(400).json({ error: 'no query given' })
+  }
+
+  try {
+    const availability = await getGitHubAvailability(name)
+    res.json({ availability })
+  } catch (err) {
+    res.status(400).json({ error: err.message })
+  }
+}

src/services/npm.js

@@ -0,0 +1,17 @@
+const npmName = require('npm-name')
+
+module.exports = async (req, res) => {
+  const name = req.query.name
+
+  if (!name) {
+    return res.status(400).json({ error: 'no query given' })
+  }
+
+  try {
+    const packageAvailability = await npmName(name)
+    const orgAvailability = await npmName(`@${name}`)
+    res.json({ packageAvailability, orgAvailability })
+  } catch (err) {
+    res.status(400).json({ error: err.message })
+  }
+}

src/services/twitter.js

@@ -0,0 +1,22 @@
+const fetch = require('isomorphic-unfetch')
+
+async function getTwitterAvailability(name) {
+  const twitterURL = 'https://twitter.com'
+  const response = await fetch(`${twitterURL}/${encodeURIComponent(name)}`)
+  return response.status === 404
+}
+
+module.exports = async (req, res) => {
+  const name = req.query.name
+
+  if (!name) {
+    return res.status(400).json({ error: 'no query given' })
+  }
+
+  try {
+    const availability = await getTwitterAvailability(name)
+    res.json({ availability })
+  } catch (err) {
+    res.status(400).json({ error: err.message })
+  }
+}