bcrypt causing unit testing to go crazy - unit-testing

Question

I am using Webpack. Karma and Mocha to run a unit test:
const assert = require('assert');
//const bcrypt = require('bcrypt');
describe('encryptPass', function() {
it('returned hash should return ', function() {
assert.equal(1, 1);
});
});
When I comment out the bcrypt include line, the test runs fine. However, when I leave this line in, it prints a whole load of information and errors to the console:
> auth_app#1.0.0 test /tidee/auth_app
> NODE_ENV=test karma start
Hash: 745e3239cb5645ae9c7c
Version: webpack 1.14.0
Time: 15923ms
Asset Size Chunks Chunk Names
79515ad0788973c533405f7012dfeccd.woff 22.7 kB [emitted]
f4769f9bdb7466be65088239c12046d1.eot 20.1 kB [emitted]
9b281482a6fbc52739698e0c130ea52a.woff2 11.3 kB [emitted]
1fff7dfa22a6c8ba9382ad03726139d3.woff 27.1 kB [emitted]
f2bce001e16fa48466239a51378474d1.woff 28 kB [emitted]
36eeac2edc10f0533f49c8e008896e40.woff 38.4 kB [emitted]
6a00de061f4fcc2ae24f25da53a02f4d.woff 13.2 kB [emitted]
fa2772327f55d8198301fdb8bcfc8158.woff 23.4 kB [emitted]
448c34a56d699c29117adc64c43affeb.woff2 18 kB [emitted]
89889688147bd7575d6327160d64e760.svg 109 kB [emitted]
main 5.62 MB 0 [emitted] main
tests/unit/encryptPass_test.js 14.3 MB 1 [emitted] tests/unit/encryptPass_test.js
chunk {0} main (main) 5.43 MB
[0] multi main 28 bytes {0}
[1] ./~/react/react.js 56 bytes {0} [built]
[2] ./~/process/browser.js 5.3 kB {0} {1} [built]
[3] ./~/moment/moment.js 123 kB {0} [built]
[4] ./~/babel-runtime/helpers/classCallCheck.js 208 bytes {0} [built]
[5] ./~/babel-runtime/helpers/inherits.js 1.11 kB {0} [built]
[6] ./~/babel-runtime/helpers/possibleConstructorReturn.js 542 bytes {0} [built]
[7] ./~/babel-runtime/helpers/extends.js 544 bytes {0} [built]
[8] ./~/babel-runtime/helpers/objectWithoutProperties.js 280 bytes {0} [built]
[9] ./~/classnames/index.js 1.1 kB {0} [built]
[10] ./~/react-bootstrap/lib/utils/bootstrapUtils.js 5.7 kB {0} [built]
[11] ./~/fbjs/lib/invariant.js 1.49 kB {0} [built]
[12] ./~/fbjs/lib/warning.js 2.1 kB {0} [built]
[13] ./~/react-dom/lib/reactProdInvariant.js 1.24 kB {0} [built]
[14] ./~/react-prop-types/lib/elementType.js 1.44 kB {0} [built]
[15] ./~/object-assign/index.js 1.99 kB {0} {1} [built]
[16] ./~/buffer/index.js 48.6 kB {0} {1} [built]
[17] ./~/react-dom/lib/ReactDOMComponentTree.js 6.16 kB {0} [built]
[18] ./~/invariant/browser.js 1.52 kB {0} [built]
[19] ./~/mongoose/lib/utils.js 18 kB {0} [built]
[20] ./~/warning/browser.js 1.81 kB {0} [built]
[21] ./~/fbjs/lib/ExecutionEnvironment.js 1.06 kB {0} [built]
[22] ./~/mongoose/lib/error.js 1.34 kB {0} [built]
[23] ./~/react-bootstrap/lib/utils/createChainedFunction.js 1.04 kB {0} [built]
[24] ./~/react-bootstrap/lib/utils/StyleConfig.js 573 bytes {0} [built]
[25] ./~/react-dom/index.js 59 bytes {0} [built]
[26] ./~/mongoose/lib/schematype.js 26.5 kB {0} [built]
[27] ./~/react-bootstrap/lib/utils/ValidComponentChildren.js 4.36 kB {0} [built]
[28] ./~/react/lib/ReactComponentTreeHook.js 10.4 kB {0} [built]
[29] ./~/axios/lib/utils.js 7.46 kB {0} [built]
[30] ./~/jquery/dist/jquery.js 267 kB {0} [built]
[31] ./~/react-dom/lib/ReactInstrumentation.js 601 bytes {0} [built]
[32] ./~/fbjs/lib/emptyFunction.js 1.08 kB {0} [built]
[33] ./~/mongoose/lib/document.js 68.8 kB {0} [built]
[34] ./~/core-js/library/modules/_core.js 117 bytes {0} [built]
[35] ./~/core-js/library/modules/_wks.js 368 bytes {0} [built]
[36] ./~/react-bootstrap/lib/SafeAnchor.js 3.8 kB {0} [built]
[37] ./~/react-dom/lib/ReactUpdates.js 9.53 kB {0} [built]
[38] ./~/react-intl/lib/index.js 62.1 kB {0} [built]
[39] ./~/react/lib/ReactCurrentOwner.js 623 bytes {0} [built]
[40] ./~/react-dom/lib/SyntheticEvent.js 9.18 kB {0} [built]
[41] ./client/src/helpers/doFetch.js 4.55 kB {0} [built]
...
WARNING in ./~/bcrypt/bcrypt.js
Critical dependencies:
6:15-36 the request of a dependency is an expression
# ./~/bcrypt/bcrypt.js 6:15-36
WARNING in ./~/node-pre-gyp/lib/pre-binding.js
Critical dependencies:
19:22-48 the request of a dependency is an expression
# ./~/node-pre-gyp/lib/pre-binding.js 19:22-48
WARNING in ./~/bcrypt/CHANGELOG.md
Module parse failed: /tidee/auth_app/node_modules/bcrypt/CHANGELOG.md Unexpected character '#' (1:0)
You may need an appropriate loader to handle this file type.
SyntaxError: Unexpected character '#' (1:0)
at Parser.pp$4.raise (/tidee/auth_app/node_modules/acorn/dist/acorn.js:2221:15)
at Parser.pp$7.getTokenFromCode (/tidee/auth_app/node_modules/acorn/dist/acorn.js:2756:10)
at Parser.pp$7.readToken (/tidee/auth_app/node_modules/acorn/dist/acorn.js:2477:17)
at Parser.pp$7.nextToken (/tidee/auth_app/node_modules/acorn/dist/acorn.js:2468:15)
at Parser.parse (/tidee/auth_app/node_modules/acorn/dist/acorn.js:515:10)
at Object.parse (/tidee/auth_app/node_modules/acorn/dist/acorn.js:3098:39)
at Parser.parse (/tidee/auth_app/node_modules/webpack/lib/Parser.js:902:15)
at NormalModule.<anonymous> (/tidee/auth_app/node_modules/webpack/lib/NormalModule.js:104:16)
at NormalModule.onModuleBuild (/tidee/auth_app/node_modules/webpack-core/lib/NormalModuleMixin.js:310:10)
at nextLoader (/tidee/auth_app/node_modules/webpack-core/lib/NormalModuleMixin.js:275:25)
at /tidee/auth_app/node_modules/webpack-core/lib/NormalModuleMixin.js:259:5
at Storage.finished (/tidee/auth_app/node_modules/enhanced-resolve/lib/CachedInputFileSystem.js:38:16)
at /tidee/auth_app/node_modules/graceful-fs/graceful-fs.js:78:16
at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:415:3)
# ./~/bcrypt ^\.\/.*$
and it goes on an on!!