Enable linting of build scripts

scripts/build/.eslintrc.js

@@ -0,0 +1,12 @@
+"use strict";
+
+module.exports = {
+  overrides: [
+    {
+      files: "rollup.*.config.js",
+      parserOptions: {
+        sourceType: "module"
+      }
+    }
+  ]
+};

scripts/build/rollup.base.config.js

@@ -2,15 +2,15 @@ export default {
   onwarn: function(warning) {
     if (
       [
-        'EVAL',
-        'MISSING_GLOBAL_NAME',
-        'MISSING_NODE_BUILTINS',
-        'UNRESOLVED_IMPORT',
+        "EVAL",
+        "MISSING_GLOBAL_NAME",
+        "MISSING_NODE_BUILTINS",
+        "UNRESOLVED_IMPORT"
       ].find(code => code === warning.code)
     ) {
       return;
     }
 
     console.warn(warning.message);
-  },
+  }
 };

scripts/build/rollup.bin.config.js

@@ -1,23 +1,21 @@
-import baseConfig from './rollup.base.config.js';
-import resolve from 'rollup-plugin-node-resolve';
-import commonjs from 'rollup-plugin-commonjs';
-import json from 'rollup-plugin-json';
-import replace from 'rollup-plugin-replace';
-
-const parser = process.env.parser;
+import baseConfig from "./rollup.base.config.js";
+import resolve from "rollup-plugin-node-resolve";
+import commonjs from "rollup-plugin-commonjs";
+import json from "rollup-plugin-json";
+import replace from "rollup-plugin-replace";
 
 export default Object.assign(baseConfig, {
-  entry: 'bin/prettier.js',
-  dest: 'dist/bin/prettier.js',
-  format: 'cjs',
-  banner: '#!/usr/bin/env node',
+  entry: "bin/prettier.js",
+  dest: "dist/bin/prettier.js",
+  format: "cjs",
+  banner: "#!/usr/bin/env node",
   plugins: [
     replace({
-      '#!/usr/bin/env node': '',
+      "#!/usr/bin/env node": ""
     }),
     json(),
     resolve({ preferBuiltins: true }),
-    commonjs(),
+    commonjs()
   ],
-  external: ['fs', 'readline', 'path', 'module', 'assert', 'util', 'events'],
+  external: ["fs", "readline", "path", "module", "assert", "util", "events"]
 });

scripts/build/rollup.docs.config.js

@@ -1,19 +1,19 @@
-import baseConfig from './rollup.base.config.js';
-import resolve from 'rollup-plugin-node-resolve';
-import commonjs from 'rollup-plugin-commonjs';
-import globals from 'rollup-plugin-node-globals';
-import json from 'rollup-plugin-json';
+import baseConfig from "./rollup.base.config.js";
+import resolve from "rollup-plugin-node-resolve";
+import commonjs from "rollup-plugin-commonjs";
+import globals from "rollup-plugin-node-globals";
+import json from "rollup-plugin-json";
 
 const filepath = process.env.filepath;
-const filename = filepath.replace(/.+\//, '');
-const basename = filename.replace(/\..+/, '');
+const filename = filepath.replace(/.+\//, "");
+const basename = filename.replace(/\..+/, "");
 
 export default Object.assign(baseConfig, {
-  entry: 'dist/' + filepath,
-  dest: 'docs/lib/' + filename,
-  format: 'iife',
+  entry: "dist/" + filepath,
+  dest: "docs/lib/" + filename,
+  format: "iife",
   plugins: [json(), resolve({ preferBuiltins: true }), commonjs(), globals()],
   useStrict: false,
-  moduleName: basename.replace(/.+-/, ''),
-  external: ['assert', 'fs', 'module'],
+  moduleName: basename.replace(/.+-/, ""),
+  external: ["assert", "fs", "module"]
 });

scripts/build/rollup.index.config.js

@@ -1,12 +1,12 @@
-import baseConfig from './rollup.base.config.js';
-import resolve from 'rollup-plugin-node-resolve';
-import commonjs from 'rollup-plugin-commonjs';
-import json from 'rollup-plugin-json';
+import baseConfig from "./rollup.base.config.js";
+import resolve from "rollup-plugin-node-resolve";
+import commonjs from "rollup-plugin-commonjs";
+import json from "rollup-plugin-json";
 
 export default Object.assign(baseConfig, {
-  entry: 'index.js',
-  dest: 'dist/index.js',
-  format: 'cjs',
+  entry: "index.js",
+  dest: "dist/index.js",
+  format: "cjs",
   plugins: [json(), resolve({ preferBuiltins: true }), commonjs()],
-  external: ['assert'],
+  external: ["assert"]
 });

scripts/build/rollup.parser.config.js

@@ -1,21 +1,21 @@
-import baseConfig from './rollup.base.config.js';
-import resolve from 'rollup-plugin-node-resolve';
-import commonjs from 'rollup-plugin-commonjs';
-import json from 'rollup-plugin-json';
-import replace from 'rollup-plugin-replace';
-import uglify from 'uglify-es';
+import baseConfig from "./rollup.base.config.js";
+import resolve from "rollup-plugin-node-resolve";
+import commonjs from "rollup-plugin-commonjs";
+import json from "rollup-plugin-json";
+import replace from "rollup-plugin-replace";
+import uglify from "uglify-es";
 
 const parser = process.env.parser;
 
 export default Object.assign(baseConfig, {
-  entry: 'src/parser-' + parser + '.js',
-  dest: 'dist/parser-' + parser + '.js',
-  format: 'cjs',
+  entry: "src/parser-" + parser + ".js",
+  dest: "dist/parser-" + parser + ".js",
+  format: "cjs",
   plugins: [
-    parser === 'typescript'
+    parser === "typescript"
       ? replace({
-          'exports.Syntax =': '1,',
-          include: 'node_modules/typescript-eslint-parser/parser.js',
+          "exports.Syntax =": "1,",
+          include: "node_modules/typescript-eslint-parser/parser.js"
         })
       : {},
     json(),
@@ -24,20 +24,22 @@ export default Object.assign(baseConfig, {
     {
       transformBundle(code) {
         const result = uglify.minify(code, {});
-        if (result.error) throw result.error;
+        if (result.error) {
+          throw result.error;
+        }
         return result;
-      },
-    },
+      }
+    }
   ],
   external: [
-    'fs',
-    'buffer',
-    'path',
-    'module',
-    'assert',
-    'util',
-    'os',
-    'crypto',
+    "fs",
+    "buffer",
+    "path",
+    "module",
+    "assert",
+    "util",
+    "os",
+    "crypto"
   ],
-  useStrict: parser === 'flow' ? false : true,
+  useStrict: parser === "flow" ? false : true
 });