build: add compiler, linter and test runner

.eslintrc.json

@@ -0,0 +1,14 @@
+{
+  "env": {
+    "browser": true,
+    "es2021": true
+  },
+  "extends": ["eslint:recommended", "plugin:@typescript-eslint/recommended"],
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "ecmaVersion": 13,
+    "sourceType": "module"
+  },
+  "plugins": ["@typescript-eslint"],
+  "rules": {}
+}

.gitignore

@@ -0,0 +1,4 @@
+dist
+dist-docs
+node_modules
+.DS_Store

.husky/commit-msg

@@ -0,0 +1,4 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+yarn commitlint --edit $1

.husky/pre-push

@@ -0,0 +1,6 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+yarn build
+yarn lint
+yarn test

.prettierrc

@@ -0,0 +1,4 @@
+{
+  "printWidth": 100,
+  "arrowParens": "avoid"
+}

.vscode/extensions.json

@@ -0,0 +1,3 @@
+{
+  "recommendations": ["esbenp.prettier-vscode", "dbaeumer.vscode-eslint"]
+}

.vscode/settings.json

@@ -0,0 +1,46 @@
+{
+  // Format all files on save with prettier
+  "editor.defaultFormatter": "esbenp.prettier-vscode",
+  "editor.formatOnSave": true,
+  "editor.formatOnType": false,
+  "editor.formatOnPaste": false,
+  "prettier.enable": true,
+
+  // Display rulers
+  "editor.rulers": [100, 120],
+
+  // Eslint
+  "eslint.enable": true,
+  "eslint.workingDirectories": ["."],
+  "eslint.format.enable": false,
+
+  // Easier debugging
+  "debug.javascript.autoAttachFilter": "onlyWithFlag",
+  "debug.javascript.terminalOptions": {
+    "skipFiles": ["<node_internals>/**", "**/node_modules"]
+  },
+
+  // Remove build & configuration files from the sidebar
+  "files.exclude": {
+    ".github": true,
+    ".husky": true,
+    ".vscode": true,
+    ".eslintrc.json": true,
+    ".prettierrc": true,
+    "commitlint.config.js": true,
+    "dist-docs": true,
+    "yarn.lock": true,
+    "lerna.json": true,
+    "typedoc.json": true,
+    "**/dist": true,
+    "**/node_modules": true,
+    "**/jest.config.js": true,
+    "**/LICENSE": true,
+    "**/tsconfig.json": true
+  },
+
+  // Performance
+  "files.watcherExclude": {
+    "**/node_modules/**": true
+  }
+}

commitlint.config.js

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+// NOTICE: When a github "squash and merge" is performed, github add the PR link in the commit
+//         message using the format ` (#<PR_ID>)`. Github provide the target branch of the build,
+//         so authorizing 4+5 = 9 characters more on main for the max header length should work
+//         until we reach PR #99999.
+
+const maxLineLength = process.env.GITHUB_EVENT_NAME === "push" ? 109 : 100;
+
+module.exports = {
+  extends: ["@commitlint/config-conventional"],
+  rules: {
+    "header-max-length": [1, "always", maxLineLength],
+    "body-max-line-length": [1, "always", maxLineLength],
+    "footer-max-line-length": [1, "always", maxLineLength],
+  },
+};

lerna.json

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+{
+  "npmClient": "yarn",
+  "useWorkspaces": true,
+  "version": "0.0.0"
+}

package.json

@@ -0,0 +1,32 @@
+{
+  "name": "root",
+  "private": true,
+  "devDependencies": {
+    "@commitlint/cli": "^15.0.0",
+    "@commitlint/config-conventional": "^15.0.0",
+    "@types/jest": "^27.0.3",
+    "@types/node": "^16.11.12",
+    "@typescript-eslint/eslint-plugin": "^5.7.0",
+    "@typescript-eslint/parser": "^5.7.0",
+    "eslint": "^8.4.1",
+    "husky": "^7.0.0",
+    "jest": "^27.4.4",
+    "lerna": "^4.0.0",
+    "prettier": "^2.5.1",
+    "ts-jest": "^27.1.1",
+    "typedoc": "^0.22.10",
+    "typescript": "^4.5.3"
+  },
+  "scripts": {
+    "bootstrap": "lerna bootstrap",
+    "build:watch": "lerna run --parallel --no-bail --no-prefix build:watch",
+    "build": "lerna run build",
+    "docs": "yarn build && typedoc",
+    "lint": "lerna run lint",
+    "prepare": "husky install",
+    "test": "jest"
+  },
+  "workspaces": [
+    "packages/*"
+  ]
+}