Webpack 4.16.5

[branfordwang]

This is currently failing at compiler.parser.plugin because compiler.parser is undefined

compiler.parser.plugin("var rewire", function () { return true; });

Browser console error:

TypeError: Cannot read property 'plugin' of undefined at RewirePlugin.apply (/Users/bwang/Documents/workspace/ResponsiveBooking/node_modules/rewire-webpack/lib/RewirePlugin.js:22:21) at webpack (/Users/bwang/Documents/workspace/ResponsiveBooking/node_modules/webpack/lib/webpack.js:47:13) at Plugin (/Users/bwang/Documents/workspace/ResponsiveBooking/node_modules/karma-webpack/lib/karma-webpack.js:87:16) at invoke (/Users/bwang/Documents/workspace/ResponsiveBooking/node_modules/di/lib/injector.js:75:15) at Array.instantiate (/Users/bwang/Documents/workspace/ResponsiveBooking/node_modules/di/lib/injector.js:59:20) at get (/Users/bwang/Documents/workspace/ResponsiveBooking/node_modules/di/lib/injector.js:48:43) at /Users/bwang/Documents/workspace/ResponsiveBooking/node_modules/di/lib/injector.js:71:14 at Array.map () at Array.invoke (/Users/bwang/Documents/workspace/ResponsiveBooking/node_modules/di/lib/injector.js:70:31) at Injector.get (/Users/bwang/Documents/workspace/ResponsiveBooking/node_modules/di/lib/injector.js:48:43) at instantiatePreprocessor (/Users/bwang/Documents/workspace/ResponsiveBooking/node_modules/karma/lib/preprocessor.js:55:20) at Array.forEach () at createPreprocessor (/Users/bwang/Documents/workspace/ResponsiveBooking/node_modules/karma/lib/preprocessor.js:74:20) at Array.invoke (/Users/bwang/Documents/workspace/ResponsiveBooking/node_modules/di/lib/injector.js:75:15) at get (/Users/bwang/Documents/workspace/ResponsiveBooking/node_modules/di/lib/injector.js:48:43) at /Users/bwang/Documents/workspace/ResponsiveBooking/node_modules/di/lib/injector.js:71:14

[rensbaardman]

Unfortunately, the plugin doesn't have webpack 4 support. Webpack 4 introduced a different plugin API, which you are seeing the errors of.

A solution is to use my fork which supports webpack 4.