symbolicateMiddleware fails when platform is set to all

Current Behavior

When running haul start --platform all, symbolicateMiddleware throws whenever a log message is inspected.

TypeError: Cannot read property 'output' of undefined
    at createSourceMapConsumer (<redacted>/node_modules/haul-cli/src/server/middleware/symbolicateMiddleware.js:41:30)
    at symbolicateMiddleware (<redacted>/node_modules/haul-cli/src/server/middleware/symbolicateMiddleware.js:97:22)
    at Layer.handle [as handle_request] (<redacted>/node_modules/haul-cli/node_modules/express/lib/router/layer.js:95:5)
    at trim_prefix (<redacted>/node_modules/haul-cli/node_modules/express/lib/router/index.js:317:13)
    at <redacted>/node_modules/haul-cli/node_modules/express/lib/router/index.js:284:7
    at Function.process_params (<redacted>/node_modules/haul-cli/node_modules/express/lib/router/index.js:335:12)
    at next (<redacted>/node_modules/haul-cli/node_modules/express/lib/router/index.js:275:10)
    at statusPageMiddleware (<redacted>/node_modules/haul-cli/src/server/middleware/statusPageMiddleware.js:16:3)
    at Layer.handle [as handle_request] (<redacted>/node_modules/haul-cli/node_modules/express/lib/router/layer.js:95:5)
    at trim_prefix (<redacted>/node_modules/haul-cli/node_modules/express/lib/router/index.js:317:13)

Expected Behavior

No errors in the console. Either fail gracefully or (ideally) understand which compiler the source map should be loaded from.

The issue appears to be that when platform is all, the compiler passed to the middleware function is a MultiCompiler and contains an array of compilers: one for each platform. This may also be a problem with the other middleware components; I didn’t check.

Haul Configuration (webpack.haul.js)

webpack.haul.js

const path = require('path');

module.exports = ({ platform }, defaults) => ({
  entry: `./src/index.${platform}.js`,
  module: {
    ...defaults.module,
    rules: [
      ...defaults.module.rules,
      {
        test: /\.(css|less)$/,
        loaders: [path.join(__dirname, "native-css-loader.js"), 'less-loader', '<redacted>=' + __dirname + '/less-preamble.json'],
      }
    ],
  },
  resolve: {
    ...defaults.resolve,
    modules: [
      "node_modules",
      path.resolve(__dirname, "../../node_modules")
    ]
  },
});

Your Environment

software	version
Haul	0.6.0-rf
react-native	0.44.0
node	6.9.1
npm or yarn	3.10.8

[skellock]

Holy shit it worked!

[skellock]

Hey, i haven’t had time just yet. But it’s been weighing-in on my guilt-o-meter tho.

You’re welcome to steal it from me, but I can find time this week for sure.