Initial commit

.gitignore

@@ -0,0 +1,3 @@
+node_modules
+.parcel-cache
+.cache

action.yml

@@ -0,0 +1,12 @@
+name: Changesets
+description: A GitHub action to automate releases with Changesets
+using: "node12"
+main: "dist/index.js"
+inputs:
+  release-script:
+    description: "The npm script to run to do a release"
+    required: false
+    default: "release"
+branding:
+  icon: "package"
+  color: "blue"

index.ts

@@ -0,0 +1,153 @@
+import * as core from "@actions/core";
+import { exec } from "@actions/exec";
+import * as github from "@actions/github";
+import fs from "fs";
+
+async function execWithOutput(command: string, args?: string[]) {
+  let myOutput = "";
+  let myError = "";
+
+  const options = {
+    listeners: {
+      stdout: (data: Buffer) => {
+        myOutput += data.toString();
+      },
+      stderr: (data: Buffer) => {
+        myError += data.toString();
+      }
+    }
+  };
+  return {
+    code: await exec(command, args, options),
+    stdout: myOutput,
+    stderr: myError
+  };
+}
+
+(async () => {
+  const releaseScript = core.getInput("release-script");
+
+  let githubToken = process.env.GITHUB_TOKEN;
+
+  if (!githubToken) {
+    core.setFailed("Please add the GITHUB_TOKEN to the changesets action");
+    return;
+  }
+
+  const octokit = new github.GitHub(githubToken);
+
+  let repo = `${process.env.CIRCLE_PROJECT_USERNAME}/${
+    process.env.CIRCLE_PROJECT_REPONAME
+  }`;
+  let ghUsername = process.env.GITHUB_ACTOR;
+
+  if (process.env.CIRCLE_BRANCH !== "master") {
+    return console.log(
+      "Not on master, on branch: " + process.env.CIRCLE_BRANCH
+    );
+  }
+
+  console.log("setting git user");
+  await exec("git", [
+    "config",
+    "--global",
+    "user.name",
+    `"github-actions[bot]"`
+  ]);
+  await exec("git", [
+    "config",
+    "--global",
+    "user.email",
+    `"github-actions[bot]@users.noreply.github.com"`
+  ]);
+
+  await exec("git", [
+    "remote",
+    "add",
+    "gh-https",
+    `https://github.com/${repo}`
+  ]);
+
+  console.log("setting GitHub credentials");
+  fs.writeFileSync(
+    `${process.env.HOME}/.netrc`,
+    `machine github.com\nlogin github-actions[bot]\npassword ${githubToken}`
+  );
+
+  let hasChangesets = fs
+    .readdirSync(`${process.cwd()}/.changeset`)
+    .some(x => x !== "config.js" && x !== "README.md");
+  if (!hasChangesets) {
+    console.log(
+      "No changesets found, attempting to publish any unpublished packages to npm"
+    );
+    fs.writeFileSync(
+      `${process.env.HOME}/.npmrc`,
+      `//registry.npmjs.org/:_authToken=${process.env.NPM_TOKEN}`
+    );
+
+    await exec("yarn", [releaseScript]);
+
+    await exec("git", ["push", "--follow-tags", "gh-https", "master"]);
+
+    return;
+  }
+
+  let { stderr } = await execWithOutput("git", [
+    "checkout",
+    "changeset-release"
+  ]);
+  let isCreatingChangesetReleaseBranch = !stderr
+    .toString()
+    .includes("Switched to a new branch 'changeset-release'");
+  if (isCreatingChangesetReleaseBranch) {
+    console.log("creating changeset-release branch");
+    await exec("git", ["checkout", "-b", "changeset-release"]);
+  }
+
+  let shouldBump = isCreatingChangesetReleaseBranch;
+
+  if (!shouldBump) {
+    console.log("checking if new changesets should be added");
+    let cmd = await execWithOutput("git", [
+      "merge-base",
+      "changeset-release",
+      "master"
+    ]);
+    const divergedAt = cmd.stdout.trim();
+
+    let diffOutput = await execWithOutput("git", [
+      "diff",
+      "--name-only",
+      `${divergedAt}...master`
+    ]);
+    const files = diffOutput.stdout.trim();
+    shouldBump = files.includes(".changeset");
+    console.log("checked if new changesets should be added " + shouldBump);
+  }
+  if (shouldBump) {
+    await exec("git", ["reset", "--hard", "master"]);
+    await exec("yarn", ["changeset", "bump"]);
+    await exec("git", ["add", "."]);
+    await exec("git", ["commit", "-m", "Version Packages"]);
+    await exec("git", ["push", "gh-https", "changeset-release", "--force"]);
+    let searchQuery = `repo:${repo}+state:open+head:changeset-release+base:master`;
+    let searchResult = await octokit.search.issuesAndPullRequests({
+      q: searchQuery
+    });
+    console.log(JSON.stringify(searchResult.data, null, 2));
+    if (searchResult.data.items.length === 0) {
+      console.log("creating pull request");
+      await octokit.pulls.create({
+        base: "master",
+        head: "changeset-release",
+        title: "Version Packages",
+        ...github.context.repo
+      });
+    } else {
+      console.log("pull request found");
+    }
+  } else {
+    console.log("no new changesets");
+  }
+})();

package.json

@@ -0,0 +1,27 @@
+{
+  "name": "@changesets/action",
+  "version": "0.1.0",
+  "main": "dist/index.js",
+  "license": "MIT",
+  "devDependencies": {
+    "parcel": "^1.12.3",
+    "typescript": "^3.5.3"
+  },
+  "scripts": {
+    "build": "parcel build ./index.ts --no-source-maps --target=node --bundle-node-modules"
+  },
+  "dependencies": {
+    "@actions/core": "^1.0.0",
+    "@actions/exec": "^1.0.0",
+    "@actions/github": "^1.0.0",
+    "@actions/io": "^1.0.0",
+    "@actions/tool-cache": "^1.0.0",
+    "@types/node": "^12.7.1",
+    "husky": "^3.0.3"
+  },
+  "husky": {
+    "hooks": {
+      "pre-commit": "yarn build && git add dist/index.js"
+    }
+  }
+}

tsconfig.json

@@ -0,0 +1,63 @@
+{
+  "compilerOptions": {
+    /* Basic Options */
+    // "incremental": true,                   /* Enable incremental compilation */
+    "target": "esnext" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */,
+    "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
+    // "lib": [],                             /* Specify library files to be included in the compilation. */
+    // "allowJs": true,                       /* Allow javascript files to be compiled. */
+    // "checkJs": true,                       /* Report errors in .js files. */
+    // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
+    // "declaration": true,                   /* Generates corresponding '.d.ts' file. */
+    // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
+    // "sourceMap": true,                     /* Generates corresponding '.map' file. */
+    // "outFile": "./",                       /* Concatenate and emit output to single file. */
+    // "outDir": "./",                        /* Redirect output structure to the directory. */
+    // "rootDir": "./",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+    // "composite": true,                     /* Enable project compilation */
+    // "tsBuildInfoFile": "./",               /* Specify file to store incremental compilation information */
+    // "removeComments": true,                /* Do not emit comments to output. */
+    "noEmit": true /* Do not emit outputs. */,
+    // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
+    // "downlevelIteration": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
+    "isolatedModules": true /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */,
+
+    /* Strict Type-Checking Options */
+    "strict": true /* Enable all strict type-checking options. */,
+    // "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,              /* Enable strict null checks. */
+    // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
+    // "strictBindCallApply": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
+    // "strictPropertyInitialization": true,  /* Enable strict checking of property initialization in classes. */
+    // "noImplicitThis": true,                /* Raise error on 'this' expressions with an implied 'any' type. */
+    // "alwaysStrict": true,                  /* Parse in strict mode and emit "use strict" for each source file. */
+
+    /* Additional Checks */
+    // "noUnusedLocals": true,                /* Report errors on unused locals. */
+    // "noUnusedParameters": true,            /* Report errors on unused parameters. */
+    // "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
+    // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
+
+    /* Module Resolution Options */
+    // "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
+    // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+    // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
+    // "typeRoots": [],                       /* List of folders to include type definitions from. */
+    // "types": [],                           /* Type declaration files to be included in compilation. */
+    // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+    // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
+    // "allowUmdGlobalAccess": true,          /* Allow accessing UMD globals from modules. */
+
+    /* Source Map Options */
+    // "sourceRoot": "",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */
+    // "mapRoot": "",                         /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
+    // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
+
+    /* Experimental Options */
+    // "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
+    // "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */
+  }
+}