message: Renamed a variable to avoid confusion
diff: @@ -81,14 +81,14 @@ describe('MapperTranslator', function() {
  });
  describe('#makeValidator', function() {
  - const isValidExpression = MapperTranslator.makeValidator();
  + const isValidMapping = MapperTranslator.makeValidator();
  it('creates a validator function', function() {
  - expect(isValidExpression).toEqual(jasmine.any(Function));
  + expect(isValidMapping).toEqual(jasmine.any(Function));
  });
  it('Treats empty expressions as a valid', function() {
  expect(
  - isValidExpression({
  + isValidMapping({
  something: {
  expression: '',
  mappings: {},
  @@ -100,7 +100,7 @@ describe('MapperTranslator', function() {
  it('Treats well formed objects as valid', function() {
  expect(true).toBe(true);
  expect(
  - isValidExpression({
  + isValidMapping({
  something: {
  expression: '{ "a": 1, "b": [1, 2]}',
  mappingType: MAPPING_TYPE.OBJECT_TEMPLATE,
  @@ -112,7 +112,7 @@ describe('MapperTranslator', function() {
  it('Treats incorrectly formed objects as invalid', function() {
  expect(
  - isValidExpression({
  + isValidMapping({
  something: {
  expression: '{ "a": 1, "b": [1, 2}',
  mappingType: MAPPING_TYPE.OBJECT_TEMPLATE,
  @@ -133,7 +133,7 @@ describe('MapperTranslator', function() {
  ].forEach(expr => {
  it(`Treats ${expr} as valid`, () =>
  expect(
  - isValidExpression({
  + isValidMapping({
  testMapping: {
  expression: expr,
  mappings: {},
  @@ -148,7 +148,7 @@ describe('MapperTranslator', function() {
  expr => {
  it(`Treats ${expr} as invalid`, () =>
  expect(
  - isValidExpression({
  + isValidMapping({
  testMapping: {
  expression: expr,
  mappings: {},
  