(maint) Set syntax and format style guidelines

.editorconfig

@@ -0,0 +1,16 @@
+# EditorConfig helps developers define and maintain consistent
+# coding styles between different editors and IDEs
+# editorconfig.org
+
+root = true
+
+[*]
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+
+[*.{diff,md}]
+trim_trailing_whitespace = false

.eslintignore

@@ -1,2 +1,4 @@
 node_modules
-out
+out
+src/test
+testFixture

.eslintrc.json

@@ -1,12 +1,13 @@
 {
+  "env": { "browser": true, "es6": true, "node": true },
   "root": true,
   "parser": "@typescript-eslint/parser",
-  "plugins": [
-    "@typescript-eslint"
-  ],
+  "plugins": ["@typescript-eslint", "prettier"],
   "extends": [
     "eslint:recommended",
     "plugin:@typescript-eslint/eslint-recommended",
-    "plugin:@typescript-eslint/recommended"
+    "plugin:@typescript-eslint/recommended",
+    "plugin:prettier/recommended",
+    "prettier"
   ]
 }

.gitattributes

@@ -1,4 +1,4 @@
-* text=auto
+* text eol=lf
 # special shasum test can't have linefeeds change
 # https://github.com/actions/checkout/issues/226
 shasumtest.txt text eol=lf

.prettierignore

@@ -0,0 +1,4 @@
+snippets
+syntaxes
+out
+package-lock.json

.prettierrc

@@ -0,0 +1,9 @@
+{
+  "endOfLine": "lf",
+  "printWidth": 120,
+  "semi": true,
+  "singleQuote": true,
+  "tabWidth": 2,
+  "trailingComma": "all",
+  "useTabs": false
+}

.vscode/extensions.json

@@ -0,0 +1,6 @@
+{
+  "recommendations": [
+    "dbaeumer.vscode-eslint",
+    "esbenp.prettier-vscode",
+  ]
+}

.vscode/settings.json

@@ -1,5 +1,45 @@
 {
-    "editor.insertSpaces": false,
-    "typescript.preferences.quoteStyle": "single",
-    "typescript.tsc.autoDetect": "off"
+  "editor.insertSpaces": true,
+  "editor.tabSize": 2,
+
+  "files.encoding": "utf8",
+  "files.eol": "\n",
+  "files.insertFinalNewline": true,
+  "files.trimFinalNewlines": true,
+  "files.trimTrailingWhitespace": true,
+
+  "files.exclude": {
+    "node_modules": true,
+    "out": true
+  },
+  "search.exclude": {
+    "node_modules": true,
+    "out": true
+  },
+
+  "typescript.format.enable": false,
+  "typescript.tsc.autoDetect": "off",
+
+  "[javascript]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[json]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[jsonc]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[markdown]": {
+    "editor.wordWrapColumn": 80,
+    "editor.wordWrap": "wordWrapColumn",
+    "editor.quickSuggestions": false,
+    "files.trimTrailingWhitespace": false
+  },
+  "[typescript]": {
+    "editor.codeActionsOnSave": {
+      "source.fixAll": true,
+      "source.organizeImports": true
+    },
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  }
 }

package.json

@@ -219,7 +219,7 @@
     "package": "vsce package",
     "compile": "tsc -b",
     "watch": "tsc -b -w",
-    "lint": "eslint .",
+    "lint": "eslint src/**/*.ts",
     "test-compile": "tsc -p ./",
     "test": "npm run test-compile && node ./out/test/runTest.js"
   },
@@ -245,9 +245,12 @@
     "@types/yauzl": "^2.9.1",
     "@typescript-eslint/eslint-plugin": "^3.9.0",
     "@typescript-eslint/parser": "^3.9.0",
-    "eslint": "^7.6.0",
+    "eslint": "^7.32.0",
+    "eslint-config-prettier": "^8.3.0",
+    "eslint-plugin-prettier": "^3.4.1",
     "glob": "^7.1.6",
     "mocha": "^8.2.1",
+    "prettier": "^2.3.2",
     "typescript": "^3.9.7",
     "vsce": "^1.93.0",
     "vscode-test": "^1.5.2"