Add publish with changeset in workflow

.changeset/README.md

@@ -0,0 +1,5 @@
+# Changesets
+
+Hello and welcome! This folder has been automatically generated by `@changesets/cli`, a build tool that works with mono-repos or single package repos to help you verion and release your code. You can find the full documentation for it [in our repository](https://github.com/changesets/changesets)
+
+We have a quick list of common questions to get you started engaging with this project in [our documentation](https://github.com/changesets/changesets/blob/master/docs/common-questions.md)

.changeset/config.js

@@ -0,0 +1,83 @@
+require('dotenv').config();
+const { getInfo } = require('@changesets/get-github-info');
+
+const changesetOptions = {
+  // If true, we will automatically commit the changeset when the command is run
+  commit: false,
+};
+
+// This function takes information about a changeset to generate an entry for it in your
+// changelog. We provide the full changeset object as well as the version.
+// It may be a good idea to replace the commit hash with a link to the commit.
+
+/* the default shape is:
+### Bump Type
+
+- GIT_HASH: A summary message you wrote, indented?
+*/
+
+const getReleaseLine = async (changeset, type) => {
+  const [firstLine, ...futureLines] = changeset.summary
+    .split('\n')
+    .map(l => l.trimRight());
+  // getInfo exposes the GH username and PR number if you want them directly
+  // but it also exposes a set of links for the commit, PR and GH username
+  let { user, pull, links } = await getInfo({
+    repo: process.env.GITHUB_REPOSITORY,
+    commit: changeset.commit,
+  });
+  return `- ${links.commit}${links.pull === null ? '' : ` ${links.pull}`}${
+    links.user === null ? '' : ` Thanks ${links.user}!`
+  }: ${firstLine}\n${futureLines.map(l => `  ${l}`).join('\n')}`;
+};
+
+// This function takes information about what dependencies we are updating in the package.
+// It provides an array of related changesets, as well as the dependencies updated.
+
+/*
+- Updated dependencies: [ABCDEFG]:
+- Updated dependencies: [HIJKLMN]:
+  - [email protected]
+  - [email protected]
+*/
+const getDependencyReleaseLine = async (changesets, dependenciesUpdated) => {
+  if (dependenciesUpdated.length === 0) return '';
+
+  const changesetLinks = changesets.map(
+    changeset => `- Updated dependencies [${changeset.commit}]:`
+  );
+
+  const updatedDepenenciesList = dependenciesUpdated.map(
+    dependency => `  - ${dependency.name}@${dependency.version}`
+  );
+
+  return [...changesetLinks, ...updatedDepenenciesList].join('\n');
+};
+
+const versionOptions = {
+  // If true, we will automatically commit the version updating when the command is run
+  commit: false,
+  // Adds a skipCI flag to the commit - only valid if `commit` is also true.
+  skipCI: false,
+  // Do not modify the `changelog.md` files for packages that are updated
+  updateChangelog: true,
+  // A function that returns a string. It takes in options about a change. This allows you to customise your changelog entries
+  getReleaseLine,
+  // A function that returns a string. It takes in options about when a pacakge is updated because
+  getDependencyReleaseLine,
+  // An array of arrays that defines packages that are linked.
+  // Linked packages are packages that should be at the same version when they're released.
+  // If you've used Lerna to version packages before, this is very similar.
+  linked: [[]],
+};
+
+const publishOptions = {
+  // This sets whether unpublished packages are public by default. We err on the side of caution here.
+  public: true,
+};
+
+module.exports = {
+  versionOptions,
+  changesetOptions,
+  publishOptions,
+};

.github/workflows/main.yml

@@ -1,6 +1,6 @@
 name: CI
 
-on: [push]
+on: push
 
 jobs:
   test:

.github/workflows/release.yml

@@ -0,0 +1,39 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - '.changeset/*/*'
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+
+      - name: Use Node.js 10.x
+        uses: actions/setup-node@v1
+        with:
+          node-version: 10.x
+
+      - name: Install Yarn
+        run: curl -o- -L https://yarnpkg.com/install.sh | bash
+
+      - name: Install Dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: Build
+        run: yarn build
+
+      - name: Publish to npm
+        uses: changesets/action@master
+        with:
+          # The --otp=1 is to get around a bug in changesets
+          # It will be fixed in Changesets 2
+          publish: yarn release --otp=1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}

.gitignore

@@ -3,4 +3,5 @@
 /coverage/
 *.log
 .vscode
+.env
 package-lock.json

package.json

@@ -38,9 +38,12 @@
     "@babel/plugin-transform-runtime": "^7.0.0",
     "@babel/preset-env": "^7.0.0",
     "@babel/preset-flow": "7.0.0",
+    "@changesets/cli": "^1.3.0",
+    "@changesets/get-github-info": "^0.1.3",
     "babel-core": "^7.0.0-bridge.0",
     "babel-jest": "^24.9.0",
     "babel-plugin-add-module-exports": "^1.0.0",
+    "dotenv": "^8.1.0",
     "eslint": "^6.3.0",
     "eslint-config-prettier": "^6.2.0",
     "eslint-plugin-jest": "^22.17.0",