[react-packager][streamline oss] Move open sourced JS source to react-native-github

linter.js

@@ -0,0 +1,83 @@
+// Copyright 2012-present Facebook. All Rights Reserved.
+'use strict';
+
+var eslint = require('eslint');
+var transformSource = require('./jestSupport/scriptPreprocess.js').transformSource;
+
+var ignoredStylisticRules = {
+  'key-spacing': false,
+  'comma-spacing': true,
+  'no-multi-spaces': true,
+  'brace-style': true,
+  'camelcase': true,
+  'consistent-this': true,
+  'eol-last': true,
+  'func-names': true,
+  'func-style': true,
+  'new-cap': true,
+  'new-parens': true,
+  'no-nested-ternary': true,
+  'no-array-constructor': true,
+  'no-lonely-if': true,
+  'no-new-object': true,
+  'no-spaced-func': true,
+  'no-space-before-semi': true,
+  'no-ternary': true,
+  'no-trailing-spaces': true,
+  'no-underscore-dangle': true,
+  'no-wrap-func': true,
+  'no-mixed-spaces-and-tabs': true,
+  'quotes': true,
+  'quote-props': true,
+  'semi': true,
+  'sort-vars': true,
+  'space-after-keywords': true,
+  'space-in-brackets': true,
+  'space-in-parens': true,
+  'space-infix-ops': true,
+  'space-return-throw-case': true,
+  'space-unary-word-ops': true,
+  'max-nested-callbacks': true,
+  'one-var': true,
+  'wrap-regex': true,
+  'curly': true,
+  'no-mixed-requires': true,
+};
+
+/*
+ * Currently ESLint does not understand ES6+React-flavoured syntax.
+ * To make it work on our codebase, we monkey-patch `verify` function
+ * to do a transform before running lint rules.
+ *
+ * If future, as ESLint's support for ES6 expands, we can get rid of this
+ * hack
+ */
+var originalVerify = eslint.linter.verify;
+eslint.linter.verify = function(text, config, filename, saveState) {
+  var transformedText;
+  try {
+    transformedText = transformSource(text);
+  } catch (e) {
+    return [{
+      severity: 2,
+      line: e.lineNumber,
+      message: e.message,
+      source: text
+    }];
+  }
+  var originalLines = text.split('\n');
+  var transformedLines = transformedText.split('\n');
+  var warnings = originalVerify.call(eslint.linter, transformedText, config, filename, saveState);
+
+  // JSX and ES6 transforms usually generate pretty ugly code. Let's skip lint warnings
+  // about code style for lines that have been changed by transform step.
+  // Note that more important issues, like use of undefined vars, will still be reported.
+  return warnings.filter(function(error) {
+    var lineHasBeenTransformed = originalLines[error.line - 1] !== transformedLines[error.line - 1];
+    var shouldIgnore = ignoredStylisticRules[error.ruleId] && lineHasBeenTransformed;
+    return !shouldIgnore;
+  });
+};
+
+// Run the original CLI
+require('eslint/bin/eslint');