init-ts-package.sh

init-ts-package.sh

#!/usr/bin/env bash

generate_file() {
  if [ ! -f "$1" ]; then
  echo "$2" > "$1"
  fi
}

# ---
# package.json
#
if [ ! -f "package.json" ]; then
  npm init -y
  jq '.main = "dist/index.js" |
.engines.node = ">= 12" |
.scripts.lint = "eslint ." |
.scripts.build = "tsc -p tsconfig.json" |
.scripts.prepublishOnly = "run-s lint depcheck build test" |
.scripts.depcheck = "depcheck" |
.scripts.test = "jest"' \
  package.json > package.tmp.json
  mv package.tmp.json package.json
fi

mkdir -p src
touch src/index.ts

# ---
# gitignore
#
if [ ! -f ".gitignore" ]; then
  curl "https://www.toptal.com/developers/gitignore/api/osx,node,linux,windows,intellij+all,visualstudiocode" > .gitignore
fi

# ---
# devDependencies
#
yarn add -D \
  @types/jest \
  @typescript-eslint/eslint-plugin \
  @typescript-eslint/parser \
  eslint \
  eslint-config-google \
  eslint-plugin-jest \
  eslint-plugin-node \
  jest \
  npm-run-all \
  ts-jest \
  typescript \
  depcheck

# ---
# eslintrc
#

generate_file ".eslintrc" '{
  "root": true,
  "parser": "@typescript-eslint/parser",
  "plugins": [
    "@typescript-eslint",
    "jest"
  ],
  "extends": [
    "google",
    "eslint:recommended",
    "plugin:jest/recommended",
    "plugin:@typescript-eslint/recommended"
  ],
  "parserOptions": {
    "ecmaVersion": 2020
  },
  "rules": {
    "object-curly-spacing": ["error", "always"],
    "comma-dangle": ["error", "never"],
    "require-jsdoc": "off",
    "no-multiple-empty-lines": "error",
    "node/no-unsupported-features/es-syntax": "off",
    "@typescript-eslint/no-unused-vars": 2,
    "@typescript-eslint/semi": [2, "always"],
    "no-console": [1, { "allow": ["warn", "error", "info"] }],
    "jest/no-standalone-expect": "off"
  }
}
'

# ---
# editorconfig
#
generate_file ".editorconfig" 'root = true

[*]
charset = utf-8
end_of_line = lf
insert_final_newline = true
indent_style = space
indent_size = 2

[*.py]
indent_style = space
indent_size = 4

[Makefile]
indent_style = tab
'

# ---
# jest config
#
generate_file "jest.config.json" '{
  "preset": "ts-jest",
  "testEnvironment": "node",
  "collectCoverageFrom": [
    "!src/**/*.spec.ts",
    "src/**/*.ts"
  ]
}
'

# ---
# tsconfig
#
generate_file "tsconfig.json" '{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "strict": true,
    "outDir": "dist",
    "sourceMap": true,
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true
  }
}
'

# ---
# .depcheckrc
#
generate_file ".depcheckrc" 'ignores: ["@types/jest", "eslint-plugin-node"]
'

# ---
# git
#
if [ ! -d ".git" ]; then
  git init
  git add .
  git commit -am 'Initial commit'
fi