add linting (and some initial fixes)

1 files changed, 137 insertions, 0 deletions

diff --git a/node_modules/jest-diff/build/index.js b/node_modules/jest-diff/build/index.js
new file mode 100644
index 000000000..782207208
--- /dev/null
+++ b/node_modules/jest-diff/build/index.js
@@ -0,0 +1,137 @@
+/**
+ * Copyright (c) 2014, Facebook, Inc. All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * 
+ */
+
+'use strict';
+
+
+
+const ReactElementPlugin = require('pretty-format/build/plugins/ReactElement');
+const ReactTestComponentPlugin = require('pretty-format/build/plugins/ReactTestComponent');
+const AsymmetricMatcherPlugin = require('pretty-format/build/plugins/AsymmetricMatcher');
+
+const chalk = require('chalk');
+const diffStrings = require('./diffStrings');var _require =
+require('jest-matcher-utils');const getType = _require.getType;
+const prettyFormat = require('pretty-format');var _require2 =
+
+
+
+
+require('./constants');const NO_DIFF_MESSAGE = _require2.NO_DIFF_MESSAGE,SIMILAR_MESSAGE = _require2.SIMILAR_MESSAGE;
+
+const PLUGINS = [
+ReactTestComponentPlugin,
+ReactElementPlugin,
+AsymmetricMatcherPlugin];
+
+const FORMAT_OPTIONS = {
+  plugins: PLUGINS };
+
+const FALLBACK_FORMAT_OPTIONS = {
+  callToJSON: false,
+  maxDepth: 10,
+  plugins: PLUGINS };
+
+
+// Generate a string that will highlight the difference between two values
+// with green and red. (similar to how github does code diffing)
+function diff(a, b, options) {
+  if (a === b) {
+    return NO_DIFF_MESSAGE;
+  }
+
+  const aType = getType(a);
+  let expectedType = aType;
+  let omitDifference = false;
+  if (aType === 'object' && typeof a.asymmetricMatch === 'function') {
+    if (a.$$typeof !== Symbol.for('jest.asymmetricMatcher')) {
+      // Do not know expected type of user-defined asymmetric matcher.
+      return null;
+    }
+    if (typeof a.getExpectedType !== 'function') {
+      // For example, expect.anything() matches either null or undefined
+      return null;
+    }
+    expectedType = a.getExpectedType();
+    // Primitive types boolean and number omit difference below.
+    // For example, omit difference for expect.stringMatching(regexp)
+    omitDifference = expectedType === 'string';
+  }
+
+  if (expectedType !== getType(b)) {
+    return (
+      '  Comparing two different types of values.' +
+      ` Expected ${chalk.green(expectedType)} but ` +
+      `received ${chalk.red(getType(b))}.`);
+
+  }
+
+  if (omitDifference) {
+    return null;
+  }
+
+  switch (aType) {
+    case 'string':
+      const multiline = a.match(/[\r\n]/) !== -1 && b.indexOf('\n') !== -1;
+      if (multiline) {
+        return diffStrings(String(a), String(b), options);
+      }
+      return null;
+    case 'number':
+    case 'boolean':
+      return null;
+    case 'map':
+      return compareObjects(sortMap(a), sortMap(b), options);
+    case 'set':
+      return compareObjects(sortSet(a), sortSet(b), options);
+    default:
+      return compareObjects(a, b, options);}
+
+}
+
+function sortMap(map) {
+  return new Map(Array.from(map.entries()).sort());
+}
+
+function sortSet(set) {
+  return new Set(Array.from(set.values()).sort());
+}
+
+function compareObjects(a, b, options) {
+  let diffMessage;
+  let hasThrown = false;
+
+  try {
+    diffMessage = diffStrings(
+    prettyFormat(a, FORMAT_OPTIONS),
+    prettyFormat(b, FORMAT_OPTIONS),
+    options);
+
+  } catch (e) {
+    hasThrown = true;
+  }
+
+  // If the comparison yields no results, compare again but this time
+  // without calling `toJSON`. It's also possible that toJSON might throw.
+  if (!diffMessage || diffMessage === NO_DIFF_MESSAGE) {
+    diffMessage = diffStrings(
+    prettyFormat(a, FALLBACK_FORMAT_OPTIONS),
+    prettyFormat(b, FALLBACK_FORMAT_OPTIONS),
+    options);
+
+    if (diffMessage !== NO_DIFF_MESSAGE && !hasThrown) {
+      diffMessage = SIMILAR_MESSAGE + '\n\n' + diffMessage;
+    }
+  }
+
+  return diffMessage;
+}
+
+module.exports = diff;
\ No newline at end of file