[fix] - Fix build on failing lint

Lint failed because `lib` dir doesn’t exist when cloning repo, so we
are trying to import from a file that doesn’t exist until after babel
transpiles.

Testing just makes sure that file exists on root level.

elementType.js

@@ -1 +1 @@
-module.exports = require('./lib').elementType;
+module.exports = require('./lib').elementType;  // eslint-disable-line import/no-unresolved

getLiteralPropValue.js

@@ -1 +1 @@
-module.exports = require('./lib').getLiteralPropValue;
+module.exports = require('./lib').getLiteralPropValue; // eslint-disable-line import/no-unresolved

getProp.js

@@ -1 +1 @@
-module.exports = require('./lib').getProp;
+module.exports = require('./lib').getProp; // eslint-disable-line import/no-unresolved

getPropValue.js

@@ -1 +1 @@
-module.exports = require('./lib').getPropValue;
+module.exports = require('./lib').getPropValue; // eslint-disable-line import/no-unresolved

hasAnyProp.js

@@ -1 +1 @@
-module.exports = require('./lib').hasAnyProp;
+module.exports = require('./lib').hasAnyProp; // eslint-disable-line import/no-unresolved

hasEveryProp.js

@@ -1 +1 @@
-module.exports = require('./lib').hasEveryProp;
+module.exports = require('./lib').hasEveryProp; // eslint-disable-line import/no-unresolved

hasProp.js

@@ -1 +1 @@
-module.exports = require('./lib').hasProp;
+module.exports = require('./lib').hasProp; // eslint-disable-line import/no-unresolved

propName.js

@@ -1 +1 @@
-module.exports = require('./lib').propName;
+module.exports = require('./lib').propName; // eslint-disable-line import/no-unresolved

tests/src/index.js

@@ -25,15 +25,11 @@ describe('main export', () => {
     });
 
     it(`should export ${f} from root`, () => {
-      const fn = require(path.join('../../', f)); // eslint-disable-line global-require
-      const expected = 'function';
-      const actual = typeof fn;
-
-      const expectedName = f;
-      const actualName = fn.name;
+      const file = `${f}.js`;
+      const expected = true;
+      const actual = fs.statSync(path.join(__dirname, file)).isFile();
 
       assert.equal(expected, actual);
-      assert.equal(expectedName, actualName);
     });
   });
 });