build: use prettier to format the code

Add a build step to `npm run test` to verify that all code has been
formatted by prettier.

Developers can run `npm run lint:fix` to get the formatting fixed for
them.

Author: bajtos

.prettierignore

@@ -0,0 +1,3 @@
+dist
+dist6
+api-docs

.prettierrc

@@ -1,5 +1,4 @@
 {
-  "eslintIntegration": true,
   "bracketSpacing": false,
   "singleQuote": true,
   "printWidth": 80,

.vscode/tasks.json

@@ -6,11 +6,7 @@
     {
       "taskName": "Watch and compile TypeScript",
       "command": "npm",
-      "args": [
-        "--silent",
-        "run",
-        "build:watch"
-      ],
+      "args": ["--silent", "run", "build:watch"],
       "type": "process",
       "isBackground": true,
       "problemMatcher": "$tsc-watch",
@@ -28,11 +24,7 @@
     {
       "taskName": "Test and lint",
       "command": "npm",
-      "args": [
-        "--silent",
-        "run",
-        "test:dev"
-      ],
+      "args": ["--silent", "run", "test:dev"],
       "type": "process",
       "group": {
         "kind": "test",

package.json

@@ -12,8 +12,13 @@
     "build:lib6": "tsc --target es2015 --outDir dist6",
     "build:watch": "tsc --watch",
     "clean": "rm -rf dist dist6",
-    "lint": "tslint -c tslint.full.json --project tsconfig.json --type-check",
-    "lint:fix": "npm run lint -- --fix",
+    "lint": "npm run prettier:check && npm run tslint",
+    "lint:fix": "npm run prettier:fix && npm run tslint:fix",
+    "prettier:cli": "prettier \"**/*.ts\" \"**/*.js\" \"**/*.json\"",
+    "prettier:check": "npm run prettier:cli -- -l",
+    "prettier:fix": "npm run prettier:cli -- --write",
+    "tslint": "tslint -c tslint.full.json --project tsconfig.json --type-check",
+    "tslint:fix": "npm run lint -- --fix",
     "prepublish": "npm run build",
     "pretest": "npm run clean && npm run build",
     "test": "mocha",
@@ -44,6 +49,7 @@
     "@loopback/testlab": "^4.0.0-alpha.9",
     "@types/mocha": "^2.2.43",
     "mocha": "^3.5.3",
+    "prettier": "^1.7.4",
     "tslint": "^5.7.0",
     "typescript": "^2.5.2"
   }

tslint.full.json

@@ -1,21 +1,17 @@
 {
-    "$schema": "http://json.schemastore.org/tslint",
-    "extends": [
-      "./tslint.json"
-    ],
-    // This configuration files enabled rules which require type checking
-    // and therefore cannot be run by Visual Studio Code TSLint extension
-    // See https://github.com/Microsoft/vscode-tslint/issues/70
-    "rules": {
-      // These rules find errors related to TypeScript features.
-  
-  
-      // These rules catch common errors in JS programming or otherwise
-      // confusing constructs that are prone to producing bugs.
-  
-      "await-promise": true,
-      "no-floating-promises": true,
-      "no-void-expression": [true, "ignore-arrow-function-shorthand"]
-    }
+  "$schema": "http://json.schemastore.org/tslint",
+  "extends": ["./tslint.json"],
+  // This configuration files enabled rules which require type checking
+  // and therefore cannot be run by Visual Studio Code TSLint extension
+  // See https://github.com/Microsoft/vscode-tslint/issues/70
+  "rules": {
+    // These rules find errors related to TypeScript features.
+
+    // These rules catch common errors in JS programming or otherwise
+    // confusing constructs that are prone to producing bugs.
+
+    "await-promise": true,
+    "no-floating-promises": true,
+    "no-void-expression": [true, "ignore-arrow-function-shorthand"]
   }
-  
+}

tslint.json

@@ -21,52 +21,11 @@
     "no-string-throw": true,
     "no-unused-expression": true,
     "no-var-keyword": true,
-    "triple-equals": [
-      true,
-      "allow-null-check",
-      "allow-undefined-check"
-    ],
+    "triple-equals": [true, "allow-null-check", "allow-undefined-check"],
     "typeof-compare": true,
 
     // These rules make code maintenance easier
-    "eofline": true,
-    "indent": [true, "spaces"],
     "no-default-export": true,
-    "no-trailing-whitespace": true,
-    "prefer-const": true,
-    "trailing-comma": [true, {
-      "multiline": "always",
-      "singleline": "never"
-    }],
-
-    // These rules enforce consistent style across your codebase:
-    "arrow-return-shorthand": [true],
-    "class-name": true,
-    "comment-format": [true, "check-space"],
-    "file-header": [true, "Copyright IBM"],
-    "max-line-length": [true, 80],
-    "no-consecutive-blank-lines": [true, 2],
-    "no-unnecessary-callback-wrapper": true,
-    "one-variable-per-declaration": [true, "ignore-for-loop"],
-    "prefer-method-signature": true,
-    "quotemark": [true, "single", "avoid-escape"],
-    "semicolon": [true, "always"],
-    "space-before-function-paren": [true, {
-      "anonymous": "never",
-      "named": "never",
-      "asyncArrow": "always",
-      "method": "never",
-      "constructor": "never"
-    }],
-    "variable-name": [true, "allow-leading-underscore", "ban-keywords", "check-format"],
-    "whitespace": [
-      true,
-      "check-branch",
-      "check-decl",
-      "check-separator",
-      "check-type",
-      "check-typecast",
-      "check-preblock"
-    ]
+    "prefer-const": true
   }
 }