build: set up and document build and release scripts

Since we have a build step now we must point the package.json file
reference to the dist folder and must explicitly list all files that we
want to be included in the npm tarball.

Also instructions for relasing a new version have not yet been
documented which is finally done here.

README.md

@@ -319,5 +319,15 @@ Type `uuid --help` for usage details
 npm test
 ```
 
+## Releasing
+
+Releases are supposed to be done from master, version bumping is automated through
+[`standard-version`](https://github.com/conventional-changelog/standard-version):
+
+```shell
+npm run release -- --dry-run # verify output manually
+npm run release # follow the instructions from the output of this command
+```
+
 ----
 Markdown generated from [README_js.md](README_js.md) by [![RunMD Logo](http://i.imgur.com/h0FVyzU.png)](https://github.com/broofa/runmd)

README_js.md

@@ -297,3 +297,13 @@ Type `uuid --help` for usage details
 ```shell
 npm test
 ```
+
+## Releasing
+
+Releases are supposed to be done from master, version bumping is automated through
+[`standard-version`](https://github.com/conventional-changelog/standard-version):
+
+```shell
+npm run release -- --dry-run # verify output manually
+npm run release # follow the instructions from the output of this command
+```

package.json

@@ -14,11 +14,17 @@
   ],
   "license": "MIT",
   "bin": {
-    "uuid": "./bin/uuid"
+    "uuid": "dist/bin/uuid"
   },
   "sideEffects": false,
-  "main": "index.js",
-  "module": "esm-browser/index.js",
+  "main": "dist/index.js",
+  "module": "dist/esm-browser/index.js",
+  "files": [
+    "CHANGELOG.md",
+    "LICENSE.md",
+    "README.md",
+    "dist"
+  ],
   "devDependencies": {
     "@babel/cli": "^7.8.3",
     "@babel/core": "^7.8.3",
@@ -59,7 +65,7 @@
     "docs": "( node --version | grep -q 'v12' ) && ( npm run build && runmd --output=README.md README_js.md )",
     "docs:diff": "( node --version | grep -vq 'v12' ) || ( npm run docs && git diff --quiet README.md )",
     "build": "./scripts/build.sh",
-    "release": "standard-version"
+    "release": "standard-version --no-verify"
   },
   "repository": {
     "type": "git",
@@ -78,5 +84,11 @@
     "*.{js,jsx}": [
       "eslint --fix"
     ]
+  },
+  "standard-version": {
+    "scripts": {
+      "postchangelog": "prettier --write CHANGELOG.md",
+      "postcommit": "npm run build"
+    }
   }
 }

scripts/build.sh

@@ -1,17 +1,11 @@
 #!/bin/bash -eu
 
-# Mostly taken from:
-# https://github.com/date-fns/date-fns/blob/master/scripts/build/package.sh
-# and
-# https://medium.com/@iamstan/tips-for-writing-es-modules-in-node-js-96ec688615a4
-
 # cd to the root dir
 ROOT="$(pwd)/$(dirname "$0")/.."
 cd "$ROOT" || exit 1
 
 PATH="$(npm bin):$PATH"
-# XXX: $PACKAGE_OUTPUT_PATH must be an absolute path!
-DIR=${PACKAGE_OUTPUT_PATH:-"$ROOT/dist"}
+DIR="$ROOT/dist"
 
 # Clean up output dir
 rm -rf "$DIR"
@@ -35,12 +29,3 @@ done
 
 echo "Removing browser-specific files from esm-node"
 rm -f "$DIR"/*-browser.js
-
-# Copy basic files
-for PATTERN in package.json \
-  CHANGELOG.md \
-  LICENSE.md \
-  README.md
-do
-  cp -r "$PATTERN" "$DIR"
-done